Multi-family houses

  • Second life for one-pipe heating system - 45% savings in energy consumption

    “With the project we achieved several important results. First of all the heat consumption was reduced and the number of complaints from tenants decreased significantly. Secondly, we now have a very reliable system with a high quality of service management."

    Sergey Dzyuba, deputy chief engineer at Rep-15 LLC, the local company in charge of service and administration of the buildings.

  • Three buildings in Moscow prove the case

    Three identical residential buildings in Moscow from 1968, each with 84 apartments, were chosen for the field test. Prior to the test, the outer walls of all three buildings had been insulated and the old windows replaced by new plastic window frames as part of the comprehensive Moscow renovation program. To be able to monitor the impact and efficiency of different systems, the three buildings were fitted with different heating installations:

    - Building #1 - full installation;
    - Building #2 - partial installation;
    - Building #3 - no installation/reference building.

     Building #1Building #2Building #3
    Automatic substation with weather compensation functionxx-
    Automatic balancing and control valves with thermostatic sensorsx--
    Thermostatic radiator valvesxx-
    Heat cost allocators for individual billing of heat consumptionxx-
    Energy savings after complete renovation45%34%-
    Pay-back time (according to ABOK, the Russian Association of Engineers for HVAC and heat supply)3½ years4 years 

     

     

  • How to achieve maximum impact?

    The field tests clearly show that one-pipe heating systems can achieve high performance when mounted with automatic balancing valves with thermostatic sensors, thermostatic radiator valves and a substation with weather compensation.

     

  • Clear results

    The conclusion is clear and the behavior of the residents speaks for itself. Thermostatic radiator valves without pre-setting combined with automatic balancing of return temperature ensure a pleasant indoor climate, resulting in fewer complaints and increased well-being among the residents.

     

  • Energy effiency measures in district heating housing

    Location: Romania

    Project: Energy efficiency measures in district heating housing

    Application: Radiator Thermostats and ASV valves for Heating

    In 2003-2004, five cities in Romania were the recipients of the Phare project no. 115388/D/S/RO.

    Danfoss supplied 3,000 ASV valves and 60,000 thermostatic radiator valves to district heating companies and local authorities from Bucharest, Ploieşti, Făgăraş, Olteniţa and Paşcani.

  • Vanke Crystal City, China

    Vanke Crystal City was developed by the biggest real estate company in China - Vanke.

    The city  -  located in south of Tianjin – is a high level residential building area and it covers more than 400,000 m2 , which includes garden apartments, townhouses and villas.

    Danfoss has supplied a wide range of products, such as radiator thermostats and automatic balancing valves for the Vanke Crystal City.

  • Building co-operative Szczecin, Poland

    A building co-operative in Szczecin, Poland, has reduced the energy consumption in their one-pipe heating system by 18 percent with a solution five times cheaper than a conversion to a two-pipe system.

    Measurements have shown that the Danfoss AB-QT solution has reduced the energy consumption in the building co-operative by 18 percent. At the same time CO2 emissions have been cut by 113 tons per building.

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