Hitachi heat pump heat source compressor What is the reason for using a special compressor for heat pump water heaters? Many compressor manufacturers have invested in the development of special compressors for heat pumps in order to provide the core guarantee for the healthy development of heat pump water heaters. The operation mode of the heat pump water heater is very different from the air conditioner, which determines the difference in the design concept between the heat pump compressor and the air conditioner compressor.
The trouble-free long-term stable operation is the primary requirement for heat pump compressors. Compared with the air conditioner, the heat pump water heater has a big difference in the running time. The running time of the heat pump water heater system is much higher than that of the air conditioner.
Air conditioners are used frequently in summer, but water heaters are daily necessities, and the running time in winter is particularly long. The time to heat a tank of water in winter is several times that in summer, so it is necessary to confirm the operation mode of the heat pump water heater in winter. According to statistical calculations, heat pump water heaters have 2/3 of the lifespan consumed in winter. Because the outlet temperature of the heat pump is above 55 degrees, with the use of the compressor, the temperature of the water tank will drop. When it drops to about 45 degrees, the compressor needs to start running, so the compressor is basically operated at the condensing temperature. High area. Condensation temperature is the main factor that affects the life of the compressor. Under the condition of running for the same time, the combined load of the heat pump hot water compressor is much higher than that of the compressor in the air conditioner. The main motivation for consumers to buy heat pump water heaters is energy saving and convenience. Consumers will use more water for this, which also increases the working time of the heat pump. If the heat pump water heater is used for heating + domestic hot water, it may run for a long time throughout the heating season. Based on the above factors, Hitachi's dedicated heat pump compressors show that the actual running time of heat pump water heaters will increase significantly. To ensure that there is no failure in the life cycle of the heat pump water heater, the compressor needs to be able to withstand 20,000 hours of actual operation. Therefore, it is very necessary to use a heat pump special compressor.
