📋 Tender Overview
The draft revision of the basic set of rules SP 60 Heating ventilation and air conditioning systematized the requirements for internal engineering systems for creating and maintaining a microclimate in premises. This was announced by Irek Fayzullin Minister of Construction Housing and Communal Services of the Russian Federation.Heating ventilation and air conditioning systems are life support systems and must guarantee the safety health and comfort of every person. In order for these systems to meet the needs of the population meet the most pressing challenges of the time be energy efficient and also meet sanitary and epidemiological requirements a new edition of SP 60 has been prepared. The document was developed by a team of authors consisting of ten leading scientific educational design and construction organizations experts of the profile subcommittee PC 14 TC 465 Construction. Such a solid composition of authors determined a multifaceted and comprehensive approach to discussing changes in the set of rules the maximum involvement of the professional community in the work said Irek Fayzullin.The document stipulates requirements for adaptive ventilation systems the so-called ventilation on demand in which the flow rate of the supply and recirculation air is regulated by carbon dioxide and temperature sensors depending on the actual filling of the room by people or the load of technological equipment. Such ventilation is intended for public premises from shopping centers to train stations where the loads on the ventilation system vary greatly depending on the time of day and the functional purpose of specific premises. It is precisely because of its operating principle that adaptive ventilation first of all saves heat and electrical energy for heating and supplying ventilation air respectively.As part of the document the air exchange organization schemes have been clarified which will help to carry out the variant design of air distribution in the premises. Systems of personal localizing and displacement ventilation are provided which in many cases will not only provide a more economical consumption of energy resources but also reduce the risk of contracting infectious diseases of various etiologies in particular by airborne droplets.The document uses new circuit solutions of ventilation systems including those with a mechanical exhaust ventilation system and devices for compensating air flow through valves as well as other measures aimed at reducing the risk of spreading viral infections the minister said.New aerodynamic schemes with the supply of unheated indoor or outdoor air as well as combined schemes with the supply of partially heated air are provided. The use of such schemes will save up to 50 of the thermal energy spent on the operation of air-thermal curtains when opening the gate.The document will also include advanced technologies for reducing the cost of heat and electricity. This is first of all the use of recuperative and regenerative heat exchangers for heating the supply air RES the use of hybrid heat pump installations solar collectors and wind generators RES.According to Dmitry Zheldakov leading researcher of the Building Thermal Physics laboratory of NIISF RAASN during the work on the document the provisions of 60 STUs were analyzed as a result of which in particular it was decided to allow the ventilation of parking lots built into public buildings with the exhaust air of general ventilation systems.Dmitry Zheldakov also spoke about an important fire-prevention decision. According to him the team of authors after lengthy discussions of the revised JV 60 decided not to allow the laying of prefabricated exhaust ducts in apartment buildings with the connection of apartment branches in interroom corridors without satellites. Let us recall that a satellite is a section of an air duct that acts as an air seal and prevents the penetration of smoke during a fire smells and airborne noise from the premises of adjacent apartments.The list of new technologies to reduce the accident rate of heating systems provides for ways to increase their thermal and hydraulic stability. The use of heating systems with gas and electric infrared emitters is provided the main advantage of which is that they allow you to quickly heat all surfaces of the room in a matter of minutes.The code of practice expands the scope of new types of refrigerants. The draft document regulates the energy efficiency of refrigeration equipment for refrigeration systems that have a low global warming potential GWP. In particular the economically justified area of application of absorption refrigeration machines ABCM and heat pump units using surface layers of the ground GTST soil and water bodies is being clarified and expanded. The revised SP 60 also provides for optimization of equipment control algorithms selection of control parameters variable flow rate Due to the correct consideration of the seasonal dynamics of changes in the outdoor climate and the accumulating capacity of the building structures a decrease in the installed capacity of the refrigeration system is provided.The calculated climatic conditions for air conditioning systems have been clarified in terms of the values of the specific enthalpy and moisture content of the outside air. One of the design mistakes is the oversize of the equipment when it is calculated for higher meteorological parameters which negatively affects the economic indicators and characteristics of energy consumption and also increases the cost of supplying excess electrical power. Using real climate data allows you to make estimates of operating costs over the course of the year and estimate the savings in using equipment with energy recovery.
