The use of air-source heat pump hot and cold water units should meet the following principles:
1 is more suitable for small and medium-sized public buildings in hot summer and cold winter area;
2 hot summer and warm winter area should be used to select the heat load, less than the amount of cold water provided by the chiller;
3 in cold areas, when the winter operating coefficient of less than 1.8 or with a centralized heat source, gas source should not be used.
Note: The winter operating performance factor = winter outdoor air conditioning unit temperature calculation unit heat (KW) / unit input power
ã€Description】 This article proposes the economical and reasonable application of air source heat pump, energy-saving operation of the basic principles:
Compared with water-cooled units, air-source heat pump power consumption is higher, the price is high, but it has the heating function.For the hot summer and cold areas do not have a concentrated heat source is more suitable, especially for the unit cooling, The demand for heating and cooling heat load in summer and winter in this area is better than that in winter and winter, and the operating efficiency in winter is high. From the perspective of technical economy and rational use of electricity, medium and small-scale public buildings used during the day are most suitable;
2. In the hot summer and warm winter area, due to the small amount of heat required and the heating time is short, the heat source to select the air source heat pump heating in winter, less than the amount of cold water cooling units make up in summer, can save investment and operating costs;
3. The use of cold regions must consider the economic efficiency and reliability of the unit, when the outdoor temperature at the end of the operating conditions, resulting in COP too bottom heating unit, loss of energy-saving advantages of heat pump units should not be used.