home Stoves and fireplaces 3 joint venture 50.13330 thermal protection of buildings. SP50.13330.2012 Thermal protection of buildings

3 joint venture 50.13330 thermal protection of buildings. SP50.13330.2012 Thermal protection of buildings

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Results of calculating the energy efficiency of the project
multi-apartment large-panel building of a standard series, satisfying
requirements of Decree No. 18 and SP 50-13330-2012

As an example, we took a typical large-panel 17-storey 4-section residential building with a 1st non-residential floor of the Moscow P3M/17N1 series for 256 apartments:

area of heated floors of the building A S= 23310 m2;
total area of apartments without summer premises A kv= 16262 m2;
useful area of non-residential, rented premises And the floor= 880 m2;
total area of apartments, including usable area of non-residential premises A square+floor= 17142 m2;
living area (area of living rooms) Well= 9609 m2;
the sum of the areas of all external fences of the heated building shell And the ogre. sum= 16795 m2;
heated volume of the building Vfrom= 68500 m3;
compactness of the building And the ogre. sum/Vfrom = 0,25;
the ratio of the area of translucent fences to the area of facades is 0.17.

Attitude A S/A square+floor = 23310/17142 = 1,36.

Construction is being carried out for the Moscow region with GSOP = (20+3.1)∙214 = 4943 °C day. According to table. 9 SNiP 02/23/2003 normalized specific heat energy consumption for heating and ventilation of a building, related to m 2 floor area of apartments without summer rooms and degree-days of the heating period - 70 kJ/(m 2 °C day), after conversion it should be q h. y.req= 70∙4943/3600 = 96 kWh/m2. The occupancy of the house is assumed to be 20 m 2 of the total area of the apartments per person, then, in accordance with the above methodology, the normalized air exchange in the apartments will be 30 m 3 / h per inhabitant, and the specific value of household heat input will be 17 W / m 2 of living space.

Heating system - vertical-single-pipe with thermostats on heating devices, connects to intra-block heating networks from the central heating station through an elevator, the efficiency coefficient of automatic regulation of heat supply in heating systems is z = 0.85. Exhaust ventilation system with natural impulse and a “warm” attic; individual duct fans are installed on the last two floors; inflow - through transoms with a fixed opening to ensure normal air exchange.

First, we will calculate the energy efficiency of this house according to SNiP 02/23/2003, the requirements of which for thermal protection indicators and specific annual thermal energy consumption for heating and ventilation are taken as basic values (Table 2, column 3), for the calculated values of the reduced heat transfer resistance of the main structures : external walls R about, st = 3.13 m 2 °C/W; windows R about, ok = 0.54 m 2 °C/W; ceilings of a warm attic R about, attic = 4.12 m 2 °C/W; basement floor above the technical underground R pro, soc = 4.12 m 2 °C/W. According to the calculation results, the estimated specific annual consumption of thermal energy for heating and ventilation of the building was q h. y.des = 95,4 kWh/m2, which corresponds to what is required by SNiP 23-02-2003 - no more q h. y.req = 96 kWh/m2, and in accordance with MRR Order No. 161, the building can be assigned a normal energy efficiency class “ WITH».

Table 2. Results of calculating the specific annual consumption of thermal energy for heating
and ventilation (HV) of an apartment building for various design options
solutions for thermal protection of fences and automatic heating control

*Index*	*Requirements and calculation results*
	*SP 50-13330-2012*	*SNiP 02/23/2003*	*Resolutions of the Russian Federation No. 18*
	*SP 50-13330-2012*	*SNiP 02/23/2003*	*since 2011*	*since 2016*	*from 2020*

Required specific annual heat energy consumption for heating agent,q h. y.reqkW∙h/m2	no norm	96	*81,6*	*67,2*	*57,6*
Reduced heat transfer resistance, m 2 °C/W: Rstr, walls area 11414 m 2 ROKr,windows of non-residential premises (104 m2)* ROKr,apartment windows (2270 m2)* ROKr,windows LLU (167 m 2)* Rdvr,entrance doors (36 m 2)* Rerr, ceilings under the bay window (16 m 2)* Rb.p.r,attic floors (1151 m 2)* Rpokr,LLU coatings (251 m 2)* Rc.pr,basement floors (1313 m 2)* Rp.g.r,floors on the ground entrances (73 m 2)*
Reduced transmission coefficientheat transfer,Ktr, W/(m 2 °C)
Heat loss through external enclosing structuresfor the heating period OP,Qogreyear, MWh
Heat loss with infiltration airfor OP,Qinfyear, MWh
Occupancy of apartments, m2 of total area per person
Specific value of household heat emissions,qeveryday life, W/m2
Household heat inputs during the heating period,Qeveryday lifeyear, MWh
Heat gain through windows from solar radiation,Qinsyear, MWh

Estimated heat consumption of buildings using heating air during the heating periodQ, MWh
Estimated specific annual consumption of thermal energy for heating agent,q h. y.des, kWh/m2	*115,5*	*95,4*	*78,2*	*62,9*	*53,8*
Thermal power of the heating system,QfromR, kW
Specific thermal power heating systems,qfromR, kW/m2
AttitudeQ year fromToQ year fromSNiP 23-02
Energy efficiency class**	D	*WITH*	IN	B+	*B++*

*in brackets - the area of the external fences of the house

**according to the order of the Ministry of Regional Development of Russia No. 161.

If we accept the same initial data when calculating according to the updated SNiP 23-02 as amended by NIISF (SP 50-13330-2012), and accept the true value of the volume of the heated building, related to the area of the heated floors, at least 35% higher than the area of apartments in house, then with the same heat consumption as a building built according to SNiP 23-02-2003, a building according to SP 50-13330-2012 specific annual Thermal energy consumption for heating will be:

q h. y.des= Q year from / (1.35· A total+gender) = 1635·10 3 /(1.35·17142) = 70.6 kWh/m2.

Since the value q h. y.des= 70.6 kWh/m 2 below q h. y.req= 96 kWh/m 2 by (70.6-96) 100/96 = -26.5%, in accordance with clause 5.2 of SP 50-13330-2012, it is recommended to reduce the reduced heat transfer resistance of wall structures to R about ,st = 3.13 0.63 = 1.97 m 2 °C/W; attic and basement floors - 4.12 0.8 = 3.3 m 2 °C/W, windows - 0.54 0.95 =
= 0.51 m 2 °C/W, the remaining fences remain unchanged, heat loss from infiltrating outside air, heat gain from internal sources and from solar radiation, and the efficiency of auto-regulation of the heating system also remain unchanged.

Then the estimated annual consumption of thermal energy for heating and ventilation of the building according to the calculation results (column 2, table 2) amounted to 1980 MWh, and the specific consumption according to SP 50-13330-2012 - q h. y.des.SP= 1980 10 3 /(1.35 17142) = 85.6 kWh/m 2, which is still below the required q h. y.req= 96 kWh/m2, and therefore the reduced parameters of thermal protection of buildings according to SP 50-13330-2012 are legitimate. In the dimension adopted in SP 50-13330-2012, these values will accordingly be:

q from. R= 85.6 10 3 /(2.8 4943 24) =
= 0.257 W/(m 3 °C)

And q from. tr= 96 10 3 /(2.8 4943 24) = 0.29 W/(m 3 °C).

In column 2 of the table. 2 are given true values specific consumption related to the area of apartments - q h. y.des= 1980 10 3 /17142 = 115,5 kWh/m2 and the corresponding energy efficiency class - reduced " D“As a result, it turns out that the SNiP updated in 2012 recommends an increase in thermal energy consumption for heating by (1980-1635) 100/1635 = 21% compared to the previous SNiP of 2003. - What then is its actualization?

Justification for achieving the requirements of the resolution 1) by increasing
thermal protection of buildings

Let's consider what results will result if implemented using the example of the Moscow region according to the requirements of the resolution 1) increasing the energy efficiency of buildings by increasing the thermal protection of non-transparent external fences by 15% compared to the requirements of SNiP 02/23/2003 (accordingly, R pro, st = 3.13 1.15 = 3.6 m 2 °C/W, pro,cherd = R pro,tsok = 4.12 1.15 = 4.74 m 2 °C/W), transition to windows in apartments and built-in non-residential premises with reduced heat transfer resistance R about, ok = 0.8 m 2 °C/W (windows and balcony doors LLU remain the same) and connecting the heating system to heating networks through an automated control unit (AUU) instead of an elevator or through an automated ITP (z = 0.9). Heat loss from infiltrating outside air and heat gain from internal sources also remained the same, and heat gain from solar radiation was reduced due to the use of glass with emissive coating in windows to increase their resistance to heat transfer.

The estimated specific annual consumption of thermal energy for heating and ventilation of the building according to the calculation results (column 4, table 2) was q h. y.des= 78,2 kWh/m2, which is lower than required by regulation 1) - q h. y.req= 81,6 kWh/m2 and -18% lower than the base value, which allows the building to be assigned a high energy efficiency class “ IN" If, instead of this progressive solution, the document updated by NIISF prevails, then the heat consumption of buildings for heating will increase compared to what has already been achieved by 115.5-78.2 = 37.3 kWh for each m 2 of apartment area or by 37.3 100 /78.2 = 47.7%, almost 1.5 times. Accordingly, residents will pay for heating in houses built according to the updated SP 50.13330.2012, 1.5 times more than is possible under the proposed solution.

From 2016, it is planned to increase the thermal protection of non-transparent external fences by another 15% compared to the requirements of SNiP 23-02-2003 (accordingly, R pro,st = 3.13 1.3 = 4.07 m 2 °C/ W, R pro,cherd = R pro,tsok = = 4.12 1.3 = 5.35 m 2 °C/W, and, as shown in, this is still lower than normalized in Scandinavian countries along the surface, despite the fact that their winter severity is 1.5 times lower than ours in the central region: the resistance to heat transfer of walls along the surface is 6.67 m 2 °C/W, ours is 4, 07/0.67 = 6.07 m 2 °C/W); switch to windows in apartments and built-in non-residential premises with a reduced heat transfer resistance = 1.0 m 2 °C/W, which is also not the limit. Therefore, the statement of the author of SP 50.13330.2012 that our proposed increase in the heat transfer resistance of external fences exceeds the standards of European countries is not valid.

In addition, in accordance with the requirements of Federal Law No. 261 “On Energy Saving” “ apartment buildings, put into operation from January 1, 2012 after construction or reconstruction, must be additionally equipped individual devices accounting for the thermal energy used,” which, as experts estimate, will allow at least a 10% reduction in heat consumption for heating (ξ = 0.1 in formula (1) of the Appendix). Taking into account the inertia in the implementation of measures, we attributed the implementation of this norm only to 2016.

Taking into account the above, the estimated specific annual consumption of thermal energy for heating and ventilation of the building according to the calculation results (column 5 of Table 2) was 62,9 67,2 kWh/m2 and 34% lower than the base value, which allows the building to be assigned a high energy efficiency class “ B+" Thus, the requirements of Russian Government Decree No. 18 on increasing the energy efficiency of apartment buildings by 15% now and by another 15% from 2016 compared to SNiP 02/23/2003 in force since 2003, are met by the same increase in the thermal protection of external non-translucent fencing, switching to windows with a heat transfer resistance of 0.8 and 1.0 m 2 °C/W and using optimal solutions for automatically regulating the heat transfer of the heating system and metering the energy used.

It is interesting to note that the requirements of Decree No. 18 on increasing the energy efficiency of apartment buildings by only 40% from 2020 will not require additional energy saving measures, since by this year it is expected that the average total area of an apartment per person will reach 25 m2 (currently statistical data in Russia 22.5 m 2 / person, in European countries - 45, and in the USA and Canada - 70 m 2 / person). As a result, as calculations show (column 6 of Table 2), due to a decrease in the necessary air exchange in apartments due to less dense occupancy, and, accordingly, the infiltration component of heat loss, despite a slight decrease in heat input from internal sources (specific household heat release decreased from 17 up to 15.6 W/m2), the calculated specific annual consumption of thermal energy for heating and ventilation of the building was 53,8 kWh/m2, which is lower than required by regulation 1) - no more 57,6 kWh/m2 and -44% lower than base

Before sending an electronic appeal to the Ministry of Construction of Russia, please read the rules of operation of this interactive service set out below.

1. Electronic applications within the sphere of competence of the Ministry of Construction of Russia, filled out in accordance with the attached form, are accepted for consideration.

2. An electronic appeal may contain a statement, complaint, proposal or request.

4. In accordance with Federal Law No. 59-FZ of May 2, 2006 “On the procedure for considering appeals from citizens of the Russian Federation,” electronic appeals are registered within three days and sent, depending on the content, to the structural divisions of the Ministry. The appeal is considered within 30 days from the date of registration. An electronic appeal containing issues the solution of which is not within the competence of the Ministry of Construction of Russia is sent within seven days from the date of registration to the relevant body or the relevant official whose competence includes resolving the issues raised in the appeal, with notification of this to the citizen who sent the appeal.

6. The response to the applicant is sent to the postal address specified when filling out the form.

2018-02-15

UDC 697.1

Use of SP 50.13330.2012 “Thermal protection of buildings” in design public buildings

P. V. Vinsky, and about. Head of the HVAC sector of JSC Mosproekt-2 named after M.V. Posokhin

The features of determining the specific characteristics of thermal energy consumption for heating and ventilation of a building and calculating its specific ventilation characteristics in accordance with the updated edition of SP 50 are considered. It is shown that the discrepancies in accounting for air exchange between its actual value and the specific value per 1 m 2 adopted in the SP 50 methodology , leads to an overestimation of the building’s energy efficiency class. It is noted that the requirements of SP 50 do not take into account the specifics of modern sealed fillings of light openings when calculating the infiltration component of the ventilation characteristics, and solutions to eliminate this problem are proposed. The shortcomings of SP 50 have been identified in terms of the possibility of using the efficiency coefficient of recuperators and changing the heat transfer resistance of window units during the heating period. The presentation is illustrated with numerical examples.

Keywords:specific ventilation characteristics, air exchange, energy saving class, recuperator, translucent structures.

UDC 697.1

Using Set of Rules (SP) 50.13330.2012 “Thermal performance of the buildings” at the design of public buildings

P. V. Vinskii, Acting Chief of the HVAC section of “Mosproject-2 named after M. V. Posokhin”, Ltd.

The peculiarities of determination of specifi c characteristics of heat consumption for heating and ventilation of the building and calculation of the specifi c ventilation characteristics in accordance with the updated version of the SP 50 are concerned. It is shown that the divergence in the account of air fl ow between the actual value and unit of 1 m 2 taken in the methodology of the SP 50, leads to an overestimation of the energy class of the building. It is noted that the requirements of the SP 50 do not take into account the specifi cs of modern air-tight window units in the calculation of the infi ltration component of ventilation characteristics, and the solutions to this problem are proposed. The defi ciencies of the SP 50 in terms of the use of the coeffi cient of effi ciency of heat exchangers and changes in the resistance to heat transfer of window blocks during the heating period are identified. The presentation is illustrated by numerical examples.

Keywords:specific ventilation characteristic, air flow, energy class, heat exchanger, transparent constructions.

The features of determining the specific characteristics of thermal energy consumption for heating and ventilation of a building and calculating its specific ventilation characteristics in accordance with the updated edition of SP 50 are considered. It is shown that the discrepancies in accounting for air exchange between its actual value and the specific value per 1 m2, adopted in the SP 50 methodology, leads to an overestimation of the building's energy efficiency class. It is noted that the requirements of SP 50 do not take into account the specifics of modern sealed fillings of light openings when calculating the infiltration component of the ventilation characteristics, and solutions to eliminate this problem are proposed. The shortcomings of SP 50 have been identified in terms of the possibility of using the efficiency coefficient of recuperators and changing the heat transfer resistance of window units during the heating period. The presentation is illustrated with numerical examples.

With the release of the Russian Code of Rules (SP) 50.13330.2012 (updated edition of SNiP 23-02-2003 “Thermal protection of buildings”, hereinafter referred to as SP 50), the approach to determining the reduced heat transfer resistance of external enclosing structures and the specific characteristics of thermal energy consumption has changed. The calculation of these values is carried out by design engineers in section 10.1 “Measures to ensure compliance with energy efficiency requirements and the requirements for equipping buildings, structures and structures with metering devices for energy resources used” in accordance with Decree of the Government of the Russian Federation dated February 16, 2008 No. 87-PP “On composition of sections of project documentation and requirements for their content.” Often, to shorten the pronunciation, this project is called in one word - “energy efficiency”.

Calculated specific characteristics of thermal energy consumption for heating and ventilation of the building q from р [W/(m³·°C)] should be determined according to the mandatory Appendix G SP 50:

Where k vent, k life and k rad [W/(m³·°C)] represent, respectively, the specific ventilation characteristic of the building, the specific characteristic of the domestic heat release of the building and the specific characteristic of the heat input into the building from solar radiation.

In this article I would like to draw attention to the calculation of the specific ventilation characteristics of a building and express an opinion regarding its shortcomings using the example of public and administrative buildings. When determining k vent uses the average rate of air exchange of the building during the heating period n in [h -1 ], which is calculated from the total air exchange due to ventilation and infiltration according to the formula (D.4):

In the draft subsection “Heating, ventilation and air conditioning, heating network» Section 5 “Information about engineering equipment, about engineering and technical support networks, a list of engineering and technical measures, the content of technological solutions" air exchange is determined from the conditions for ensuring air environment parameters: according to standard air exchange per person, according to standard multiplicities according to regulatory documents, according to tasks for the assimilation of harmful gas emissions or heat emissions from related sections (TX, EO, SS, ITP).

But the amount of supply air during mechanical ventilation in the “Energy Efficiency” section is taken not to be its actual value, but normalized depending on the purpose of the building per 1 m² of estimated area. In this case, a discrepancy may arise between the two projects, since in the first case the air exchange will be greater than in the second. A simple example It may be that the calculated area does not include corridors into which supply air is supplied to compensate for the exhaust air from the bathrooms and showers. Another example: supply ventilation chambers, which are also not included in the calculated area, but air is supplied to them to prevent the formation of mold.

For clarity, we can cite the supply air flow rates calculated for an administrative building (address: Moscow, Central Administrative District, Kalanchevskaya St., vl. 43, p. 1-1a), which received a positive conclusion from the MGE. In the “AH” section, the total supply air flow rate is 142,665 m³/h, and in the “energy efficiency” section - 58,240 m³/h.

The discrepancies in air, and accordingly, in heat consumption, are almost 2.5 times larger in the first case!

Why SP 50 does not suggest that we use actual air flow rates for calculations when they have already been determined seems incomprehensible. So, this circumstance leads to an underestimated value of the specific ventilation characteristics of the building, which, in turn, leads to an overestimated energy saving class, up to “very high”. But in this case, a very high energy saving class can be assigned only subject to mandatory compliance with clause 10.5 of SP 50, otherwise class C+ is assigned - normal. Thus, clause 10.5 of SP 50 gives us the opportunity to protect ourselves and indicate an energy saving class two levels lower in the energy passport.

It would be reasonable to exclude the calculation of the specific characteristics of the thermal energy consumption of a building from the “Energy Efficiency” section and include it in the subsection “Heating, ventilation and air conditioning, heating networks,” that is, for this calculation to be regulated by SP 60.13330.2016 (updated edition of SNiP 41-01 -2003 “Heating, ventilation and air conditioning”, hereinafter referred to as SP 60).

Now I would like to talk about the infiltration component in formula (D.4) SP 50. Modern energy-efficient translucent structures, as a rule, are very sealed, have low air permeability, and we are talking about infiltration through them, as was the case in Soviet years, no longer works.

It should be noted that, depending on the functional purpose of the premises of the building, translucent structures can be solid and even bulletproof, and therefore infiltration in the volume that SP 50 proposes to us will actually be absent. As an example, we can cite a project for a special-purpose public building, for which, in order to protect information, the technical specifications indicated that all translucent structures should be solid, without the possibility of natural ventilation, but, despite this fact, infiltration was taken into account in the calculation.

Therefore, we can formulate proposals to resolve this issue:

1. If translucent structures are solid and there is no possibility of natural ventilation, then the amount of air infiltrated into the premises of a public building through leaks in the openings (assuming that they are all located on the windward side) should not be taken into account, but only the influence mechanical system ventilation.

2. If natural ventilation is possible with the mechanical ventilation system turned off and with values of air penetration resistance of translucent structures confirmed by certification test reports that ensure infiltration through leaks, the calculation should be made according to the method described in paragraphs G3 and G4 of SP 50.

3. When installing a ventilation valve in translucent structures, to ensure a constant flow of air into the room, it is necessary to take the flow rate through the valve as the calculated value.

In addition, you need to pay attention that the recuperator efficiency coefficient was introduced into the new edition of SP 50 k eff, which is currently assumed to be zero, and, if we take its definition literally, it does not depend on the presence of ventilation systems with the possibility of heat recovery. Direct-flow ventilation system, supply and exhaust system with rotary heat exchanger, with plate heat exchanger or with an intermediate coolant - for all these systems it must be considered equal to zero.

It can be taken as different from zero only during full-scale tests, when the average air permeability of public buildings (with closed supply and exhaust ventilation openings) provides an air exchange rate of n 50 ≤ 2 h -1 (with a pressure difference of 50 Pa of external and internal air and with mechanical ventilation). With this interpretation, it becomes unclear why this reduction factor was introduced if it cannot be practically used. Apparently, the fact is that when the updated edition of SP 50 is released, the text of the paragraph following formulas (D.2) and (D.3) contains explanations for the value k ef, was mistakenly transferred from the previous version (SNiP 23-02-2003), where it related to a completely different parameter concerning natural ventilation in residential buildings.

At the same time, “non-accounting” k eff can lead to a significant underestimation of the energy efficiency class of buildings, including, in some cases, residential ones.

Let us also note that the new edition of SP 50 does not explicitly take into account equipping the building with water air curtains, which serve to prevent cold air from “bursting” into the building. Heat consumption for heat supply also does not appear anywhere. This circumstance may also lead to an underestimated value of the specific characteristics of the thermal energy consumption of the building.

An additional disadvantage of SP 50 is that the heat transfer resistance of translucent structures is accepted according to certification test protocols to be equal to the value measured in accordance with GOST 26602.1-99 “Window and door blocks. Methods for determining heat transfer resistance" at the design temperature of the outside air, which corresponds to the temperature of the coldest five-day period t h5, but not higher than -20 °C, and the assessment of energy consumption and energy efficiency is carried out at the average temperature during the heating period. Thus, in the course of the experiment, the authors found that at temperature t n5 for Moscow, equal to -28 °C (at the time of the SNiP 23-01-99* “Building Climatology” edition of 2004), and at an outside air temperature of -10 °C, corresponding to the average temperature in January-February, the heat transfer resistance of window blocks differ by 12-18%. In the publication, the authors showed that for a number of designs for filling light openings, such a discrepancy may be higher. In view of this circumstance, a noticeable error arises in the calculations of heat consumption, and “not taking into account” this circumstance can lead to an underestimated energy saving class, which was also demonstrated by the authors in the publication, since, as noted, for example, in, the share of transmission heat losses through windows is very significant and comparable to losses through non-transparent fences. This is also evidenced by data from a number of foreign authors, for example.

I would also like to note that when calculating the specific characteristics of heat input into a building from solar radiation k rad [W/(m³·°C)], determined by formula (D.7) SP 50, the question arises of where to take the average values of solar radiation for the heating period I 1 , I 2 , I 3 and I 4 [MJ/(m² year)] under actual cloud conditions falling on vertical surfaces oriented along the four building facades, respectively.

SP 50 suggests that we determine these values “according to the methodology of the Code of Rules,” although, in turn, it does not contain the methodology itself. If we consider the Code of Rules 131.13330.2012 (updated edition of SNiP 23-01-99* “Construction Climatology”, hereinafter referred to as SP 131), then in Table. 9.1 shows the total solar radiation (direct and diffuse) on a vertical surface, but with a cloudless sky and for each calendar month, that is, these data cannot be used directly either.

The only document that contains the necessary information for the city of Moscow is the canceled MGSN 2.01-99 “Energy saving in buildings” (Table 3.5). But there the values are given in the dimension [kW h/m²], and the SP 50 method requires [MJ/(m² year)], so to calculate they must be multiplied by a conversion factor equal to 3.6. It might be advisable to transfer the specified MGSN table to SP 50 with the addition of similar data for other cities, or to adjust the table. 9.1 SP 131, so that it contains information about solar radiation under actual cloudiness conditions as a whole for the heating period, or give instructions in the comments to formula (D.8) SP 50 to take into account existing data SP 131 with a reducing factor on the influence of cloudiness.

I would also like to draw attention to the obvious drawback of SP 60. Unfortunately, this document does not explicitly indicate anywhere that in order to calculate the heat loss of building premises, the actual values of the heat transfer resistance of external enclosing structures, calculated according to the methods of SP 50 and SP 230.1325800.2015, should be taken. Building enclosing structures. Characteristics of thermal inhomogeneities”, except for paragraph 6.2.4. This paragraph provides the only reference to SP 50, and only in relation to the calculation of the heat transfer resistance of internal walls separating an unheated staircase from residential and other premises. Because of this, the design engineer of the “OF” section often takes advantage of the specified regulatory gap in “his” SP 60 and simply accepts for calculation the standard (more precisely, basic) values of the heat transfer resistance of external fences according to the table. 3 SP 50, thereby increasing or decreasing the actual heat consumption for the heating system.

Therefore, in our opinion, it would be advisable to include in SP 60 a reference to clause 5.4 of SP 50 for its unconditional implementation, especially since this clause by Decree of the Government of the Russian Federation of December 26, 2014 No. 1521-PP is classified as one of those, as a result of the application of which on Compliance with the requirements of the Technical Regulations “On the Safety of Buildings and Structures” is ensured on a mandatory basis. In this case, there would be harmonization between the two sections of the project and the regulatory documents themselves, and the results of the development of the “Energy Efficiency” section would be the initial data for the design of the heating system.

Thus, SP 50 and SP 60 need discussion and further adjustment.

Gagarin V.G., Kozlov V.V. On the standardization of thermal protection and the requirements for energy consumption for heating and ventilation in the draft updated edition of SNiP “Thermal protection of buildings” // Bulletin of VolgGASU. Series: Construction and architecture, 2013. No. 31-2(50). pp. 468–474.
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To the Minister of Regional Development of the Russian Federation

Slyunyaev I.N.

Our institute receives requests from various organizations regarding the “Notification of the beginning of public discussion of the draft set of rules” (hereinafter referred to as Notification). This notice indicates that a draft Amendment No. 1 to SP 50.13330.2012 “SNiP 02/23/2003 Thermal protection of buildings” has been developed. The developers listed at the beginning were: Federal agency for construction and housing and communal services (Gosstroy), LLC "Research and Design Institute of Educational, Public and Residential Buildings" (Spelling preserved from the text of the Notification), 10 days after placement LLC "………..." was removed from the list add-on developers.

NIISF RAASN federal state state-financed organization for more than fifty years he has been the author and developer of the chapter of SNiP “Building Heat Engineering”, which in 2003 was renamed SNiP 02/23/2003 “Thermal Protection of Buildings”. On the basis of NIISF RAASN, a unique team of specialists has formed, capable of comprehensively considering the issues of regulating the thermal protection of buildings. Domestic standards for thermal protection of buildings have always been advanced in the world and valued by Western experts. For the first time in the world, in the USSR in 1979, standards were introduced to take into account the influence of heat-conducting inclusions (“cold bridges”) on heat loss through enclosing structures (most European countries have not yet fully solved this problem).

Since 2010, specialists from NIISF RAASN, with the involvement of leading scientists from other institutes, have been updating SNiP 02/23/2003. The scientific supervisor of the work on the document is Corresponding Member of RAASN, Professor, Doctor of Technical Sciences V.G. Gagarin. The update was carried out with wide public discussion of the document. It should be noted that this SNiP affects the interests of a large number of construction organizations and firms producing thermal insulation materials, as well as house-building plants throughout the Russian Federation. In this regard, balanced and compromise decisions were made on the main issues, taking into account state policy in the field of energy saving, public utilities and construction. The draft document was presented at more than 30 specialized conferences, and more than 20 publications were made in specialized journals based on the updated edition. The final discussion of the draft document took place on November 2, 2011 at the Construction Research Center (a brief report on this discussion was published in two central journals), as well as on December 21, 2011 at the Ministry of Regional Development. The draft version received 338 comments and suggestions, which were fully or partially taken into account. The updated version of SNiP 02/23/2003 was approved by Order of the Minister Regional Development No. 265 June 30, 2012. The document is currently in typesetting.

And now, without notifying the developer of the updated version of SNiP, Amendment No. 1 to this SNiP was developed. The developer of this Change No. 1 is unknown to anyone, his website is practically absent and Change No. 1 is not posted on the site. There is no information from its leaders or specialists who are the authors of the changes. In addition, it is not known on what basis the proposed changes are based, since the premises justifying them are not known. The Notice of the beginning of public discussion itself was printed with errors and was not officially distributed. Change No. 1 involves a significant change in SNiP, right down to its name. And most importantly, it did not go through the procedure of public discussion that such a document should go through and that the original document went through.

The text of Change No. 1, which is contained in the Notice of the beginning of a public discussion, was drawn up carelessly and unprofessionally. It contains errors, both in substance and in substance.

First of all, the proposed title of the document “Energy Efficiency Requirements. Thermal protection of buildings, structures and structures" due to the following circumstances:

1. The proposed addition to the title “Energy Efficiency Requirements” does not comply with the Federal Law of the Russian Federation of November 23, 2009 No. 261-FZ “On energy saving and increasing energy efficiency and on introducing amendments to certain legislative acts of the Russian Federation.” According to paragraph 4 of Article 2 of this law, “energy efficiency is characteristics reflecting the ratio of the beneficial effect from the use of energy resources to the expenditure of energy resources incurred in order to obtain such an effect, in relation to products, technological process, legal entity, individual entrepreneur." This concept is economic. Energy efficiency has nothing to do with the requirements proposed in Amendment No. 1, which require reduction in energy consumption. During the discussion of the draft SP 50.13330.2012 “SNiP 23-02-2003 Thermal protection of buildings”, the concept of energy efficiency was removed from the Document and from its Appendices.

2. The document proposed for amendment does not address issues of thermal protection of buildings and structures, but only considers thermal protection of buildings. The fact is that such structures, such as bridges, do not need thermal protection, and those structures that require thermal protection, such as pipelines, are designed in accordance with special SPs, which contain requirements for their thermal protection and methods for its calculation and design. These objects are designed according to other regulatory documents by other specialists, and it is at least impractical to combine the norms and rules for designing the thermal protection of these objects in one document. In addition, the principle of harmonization with similar European standards is violated, which also do not address issues of thermal protection of structures.

Regarding the new requirements, the following can be noted.

1. Requirements in the proposed Amendment No. 1 to the “Normalized specific characteristic consumption of thermal energy for heating and ventilation of buildings” are not justified either by theoretical calculations or by experimental construction. They will lead to an increase in the cost of construction and to failure to comply with the Decree of the President of the Russian Federation of May 7, 2012 “On measures to provide citizens of the Russian Federation with affordable and comfortable housing and improve the quality of housing and communal services,” which requires “reducing the cost of one square meter housing by 20 percent..."

2. New requirements will lead to an increase in the use of expensive thermal insulation materials with untested durability, as well as a sharp decrease in the use of new effective building materials, well-proven in construction practice, such as products made of porous ceramics, autoclaved aerated concrete, etc. The matter is complicated by the fact that foreign investors have invested in the development of the production of these materials, and an artificial reduction in the volume of their use in construction will undermine confidence in our country from outside foreign investors. From this point of view, the requirements in the proposed Amendment No. 1 contradict the aforementioned Decree of the President of the Russian Federation in terms of “preventing and suppressing monopolistic activities and unfair competition of business entities in the areas of housing construction and production of building materials.”

3. Introduction to technical normative document requirements scheduled for the time of introduction (from 2013, from 2016 and from 2020) are not consistent with common sense. If the authors know how to ensure these requirements since 2016, then they need to provide justification and introduce them immediately. If methods for meeting these requirements are unknown, then there is no need to declare them ahead of time, when it is still unknown whether technical solutions will be found to satisfy these requirements. Such requirements can be introduced by orders of the ministry, and not in technical standards without indicating how to achieve them. If the ways to achieve the requirements are unknown, then cases of falsification of their implementation will become more frequent, which will lead to “paper” energy savings and corruption.

The edition of Table 15 – “Energy saving classes of residential and public buildings”, presented in the draft Amendments No. 1, is deteriorated in comparison with Table 15 of the approved edition of the updated document. In the approved document, the boundaries of energy saving classes coincided with the data specified in the Decree of the Government of the Russian Federation of January 25, 2011 No. 18. In the presented Amendment No. 1, these boundaries are of a random nature and do not say anything, including that they do not correspond to the data of the specified resolution -tions and requirements given in Change No. 1 itself.

Analysis of the text of Amendment No. 1 to SP 50.13330.2012 “SNiP 23-02-2003 Thermal protection of buildings,” as well as accompanying circumstances, shows that the Amendment was drawn up unprofessionally, and its discussion is taking place in gross violations of the established procedure. Considering the dire consequences for the country’s construction industry that will be caused by this Change No. 1, an attempt to introduce it should be considered economic sabotage. In this regard, we consider it necessary to reject the proposed changes No. 1 to the updated edition of SP 50.13330.2012 “SNiP 23-02-2003 “Thermal protection of buildings”.

Director of NIISF RAASN,

Professor, Doctor of Technical Sciences Shubin I.L.