Central Heat Pump Water Heater Technology.Energy-saving, environmental protection and complex utility ofenergy comes as the tendency for the industrial development. Suchproblems have always made the manufacturers and the industrialexperts in trouble as the worldwide petroleum and natural gasresources are going to be exhausted, the common coal-burningboilers are making the environment an extreme pollution, the fueland gas boilers are resulting in a too high cost, the electricboilers are producing a too low efficiency of energy and the solarenergy products are excessively relying upon the sunlight time anddirect sunshine. Additionally, in southern China there are overcastand rainy days over half of a year which need an assisted electricheating, while heating with an electric heating tube can produceonly 860 kcal heat per KWH, so a corresponding electric energy mustbe consumed with the hot water necessary for the users, because ofthe energy conservation. There are only three ways which canactually reach the target of energy-saving and environmentalprotection: energy-saving electronic technique, energy-savingfrequency conversion technique and new energy-saving materials,which do not become effective in the developed European andAmerican countries until being developed for over 20 years andconsumed with several hundred million US dollars.
The heat pump technique is an energy-saving environmentalprotection technique paid with much attention worldwide. The heatpump water heater unit works like this: just utilizing theenergy-saving environmental protection technique, making use of thephenomenon for an extra-low temperature refrigerant(boiled at-35oC) to be physically gasified, absorbing the air, water etc. lowtemperature heat sources in the nature without any energyconsumption, compressing the gasified refrigerant in the systeminto a high temperature high pressure gas by means of the inverseCarnot's cycling principle and via a compressor (mechanical energy)and then, via condensed exchange, releasing a high temperature heatenergy, which is transmitted into the insulating water tank to makecold water an adjustable temperature at 50-60oC suitable forshowering
