General Scanning: Sea water heat pump principle and its present – heat pump, energy saving – heat pump industry
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1. Sea water Heat Pump The concept and principle
Sea water heat Pump Technology is the use of the Earth's surface shallow water (water) absorption of solar energy and geothermal heat formed by low temperature resources, and using heat pump principle, by a small amount of high energy input, to achieve low thermal heat transfer to a high technology.
Water absorption of the solar radiation entering the Earth's considerable energy and water temperatures are generally very stable. Sea-water heat pump works is to water extraction and storage of energy as the basic "source body," which help Compressor System, a small amount of electricity consumed in the winter to keep the water in the low-grade energy "taken" out to the building Heating ; Summer put the building's energy, "take" them released into the sea in order to achieve the purpose of regulating indoor temperature. The biggest advantage of this unit is the efficient use of resources, first of all it is though to sea as a "source rock", but do not consume water, nor water pollution; followed by its high thermal efficiency, consumption of 1 kW of power, access to 3 kW to 4 kW of heat or cold, and fundamentally changed the traditional energy use patterns. As shown in Figure 1.
2. Research status and development trend
Abroad to do a lot of heat pump water source application instance. Such as the 20th century, built in the early 70s the Sydney Opera House, Japan, early 20th century, built in Osaka, 90 South Square district heating cooling universe works, using sea water to provide cold and heat source heat pump 23300kW. Nordic countries in the use of seawater heat source has a wealth of practical experience, of which Sweden is a typical application of concentrated sea-water heat pump Heating / Cooling countries. Stockholm, Sweden built a total capacity of 180MW of the world's largest water pump station for district heating, urban centers accounted for 60% of the total transport network. 6 sets of heating by the pump station capacity 30MW / integral heat pump units completed from 1984 to-1986 to debug, put into operation.
China's first sea-water source heat pump project was completed in 2004 in Qingdao Power Plant to use. The total area of 1871 square meters factory's canteen, became the first heating does not need coal, oil, use only the water provided Heating Building. In addition, Dalian Xinghai Holiday Inn Sea Water Source Heat Pump Central air conditioning Project has officially started, the sea water source heat pump central air conditioning will provide 40,000 square meters of construction Refrigeration And heating, this is the first case in China.
Days ago, after reporting and expert assessment and other procedures, Dalian was chosen as the only national source of water heat pump technology application and demonstration of large-scale city, which marked the future will be expected to Dalian seawater for energy, indoor air, cold thermal regulation.
In accordance with the state, "the implementation of building energy conservation program" requirements, "Eleventh Five-Year" period, the model city's water source heat pump heating, cooling area to reach more than 5 million square meters. Model including water source heat pump heating, cooling and related R & D integration and industrialization. Model demonstration projects on the city, the state will provide a special fund used to subsidize 70% of the incremental cost. Currently, Dalian City is actively promoting Xiaoping Island Area, Xinghai Bay business district, the software industry with the implementation of water heat pump technology and other areas of the preparatory work. Water source heat pump technology to heat (cooling) is to use a large pump on the water pre-extraction processing, to which the heat is extracted for heating and cooling and heating energy through the original city (cooling) system delivery to the home, which requires the completion of the original coal as fuel to complete the heating process. In winter, large-scale heat pump can be used for heating in the region; summer, large-scale heat pumps rely on a similar principle to seawater can complete the cooling process of cooling energy. Water source heat pumps powered by electricity, heat efficiency due to its power consumption 4 times, plus it also can be cooling, energy conversion efficiency will be further enhanced.
3. Current source heat pump systems engineering application problems
Sea water cooling pump as a new heating, from a technical point of view, especially in point of view of heat pump is very mature.
I am China Suppliers writer, reports some information about marine refrigeration , frost free refrigerator.
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