The heat pump was manufactured by Star Refrigeration in 2011[1] with three systems giving a combined capacity of 14 MWs to central Drammen[2] providing 85% of hot water needed for the city. The district heating system is owned and operated by Drammen Fjernvarme who have the rights to the concession area given by the Drammen Municipality.[3] This requires all new buildings larger than 1000 m2 to be built with a water-based heating system and connected to the district heating system.
The heat pump uses the natural refrigerant ammonia that has a zero global warming potential and is not a greenhouse gas. The heat source is seawater that is taken in around 8 or 9 °C from a depth of 18 m and is cooled by low pressure liquid refrigerant. Using a vapor-compression refrigeration cycle, the system heats district water from 65 °C to 90 °C for use in building heating and hot water systems. The system has an average coefficient of performance (COP) of 3.0 which means 1 unit of electricity is combined with 2 units of heat from the seawater to provide 3 units of heat to the district heating circuit. With the low cost of hydro-based electricity, it is cheaper to run a heat pump than a gas or electric boiler. In addition, the compressor technology used in the Drammen heat pump is the single screw compressor from Vilter (Emerson). Its internal design allows for balanced forces allowing it to perform with a very long bearing life at more than 120,000 hours for normal refrigeration compressors.[4]
The heat is extracted from a local fjord whose water temperature is around 8 °C. The water is heated from recovered energy at a temperature of 120 °C.[5] A city ordinance requires most new buildings to exploit this form of heating.[6]
Referencesedit
^BBC News, UK; Heat pumps extract warmth from ice cold water
^Antony Akilade (20 February 2014). "The Big Interview: Dave Pearson, Star Refrigeration". Herald Scotland. Retrieved 2014-02-28.
^District heating with 90% Renewable Energy, Kommunal- og moderniseringsdepartementet, 25 November 2009, retrieved 2014-02-28
^Hoffman, & Pearson, D. 2011. Ammonia heat pumps for district heating in Norway 7 – a case study 2013-12-03 at the Wayback Machine. Presented at Institute of Refrigeration, 7 April, London.
^(PDF). Archived from the original (PDF) on 2016-03-04. Retrieved 2015-03-10.
^"Heat pumps extract warmth from ice cold water". BBC News. 2015-03-10. Retrieved 2021-04-16.
January 01, 1970
drammen, heat, pump, drammen, fjernvarme, district, heating, district, heating, system, drammen, norway, regional, capital, some, west, oslo, drammen, fjernvarme, heat, pumpthe, building, containing, heat, pump, system, countrynorwaylocationbrakerøya, drammenc. Drammen Fjernvarme District Heating is a district heating system in Drammen Norway a regional capital some 65 km west of Oslo Drammen Fjernvarme Heat PumpThe building containing the 14 MW heat pump system CountryNorwayLocationBrakeroya DrammenCoordinates59 44 27 N 10 13 48 E 59 740833 N 10 23 E 59 740833 10 23StatusOperationalCommission date2011Owner s Drammen FjernvarmePower generationAnnual net output67 GWh heat edit on Wikidata The heat pump was manufactured by Star Refrigeration in 2011 1 with three systems giving a combined capacity of 14 MWs to central Drammen 2 providing 85 of hot water needed for the city The district heating system is owned and operated by Drammen Fjernvarme who have the rights to the concession area given by the Drammen Municipality 3 This requires all new buildings larger than 1000 m2 to be built with a water based heating system and connected to the district heating system The heat pump uses the natural refrigerant ammonia that has a zero global warming potential and is not a greenhouse gas The heat source is seawater that is taken in around 8 or 9 C from a depth of 18 m and is cooled by low pressure liquid refrigerant Using a vapor compression refrigeration cycle the system heats district water from 65 C to 90 C for use in building heating and hot water systems The system has an average coefficient of performance COP of 3 0 which means 1 unit of electricity is combined with 2 units of heat from the seawater to provide 3 units of heat to the district heating circuit With the low cost of hydro based electricity it is cheaper to run a heat pump than a gas or electric boiler In addition the compressor technology used in the Drammen heat pump is the single screw compressor from Vilter Emerson Its internal design allows for balanced forces allowing it to perform with a very long bearing life at more than 120 000 hours for normal refrigeration compressors 4 The heat is extracted from a local fjord whose water temperature is around 8 C The water is heated from recovered energy at a temperature of 120 C 5 A city ordinance requires most new buildings to exploit this form of heating 6 References edit BBC News UK Heat pumps extract warmth from ice cold water Antony Akilade 20 February 2014 The Big Interview Dave Pearson Star Refrigeration Herald Scotland Retrieved 2014 02 28 District heating with 90 Renewable Energy Kommunal og moderniseringsdepartementet 25 November 2009 retrieved 2014 02 28 Hoffman amp Pearson D 2011 Ammonia heat pumps for district heating in Norway 7 a case study Archived 2013 12 03 at the Wayback Machine Presented at Institute of Refrigeration 7 April London Company Technical document in Norwegian page 10 PDF Archived from the original PDF on 2016 03 04 Retrieved 2015 03 10 Heat pumps extract warmth from ice cold water BBC News 2015 03 10 Retrieved 2021 04 16 Retrieved from https en wikipedia org w index php title Drammen Heat Pump amp oldid 1192511145, wikipedia, wiki, book, books, library,
