Specifically, the air energy water heater is mainly composed of compressor, condenser, expansion valve and evaporator. When the user turns on the shower or washes vegetables, the compressor in the air energy water heater starts to work, so that the low temperature and low pressure in the air become high temperature and high pressure, and then it is delivered to the condenser. In the condenser, the high-temperature and high-pressure refrigerant interacts with the water in the water tank through the heat exchanger, so that the temperature of the water in the water tank gradually increases. At the same time, the temperature of the refrigerant is also reduced due to heat release, and enters the evaporator through the expansion valve, thus completing a refrigeration cycle.
It can be seen that the biggest advantage of air energy water heater is to use the heat energy in the air to convert low-grade heat energy through heat pump technology.
Converted into high-grade heat energy, thereby heating water. This not only saves energy, but also reduces carbon emissions. It is an environment-friendly and energy-saving hot water equipment.
In addition, the air energy water heater has the following advantages: First, because its working principle is similar to that of a refrigerator, it uses electric energy instead of flammable and explosive substances such as gas or lampblack, so it does not need to pass through a chimney and does not produce toxic and harmful gases, so it is safer. Secondly, compared with the traditional water heater, the air energy water heater can work at a lower temperature, so it will not cause heat loss and the use efficiency is higher. In addition, due to the high efficiency and energy saving characteristics of heat pump technology, the energy efficiency ratio of air energy water heater is as high as 4.0, while that of traditional water heater is only 0.8- 1.0, which means that air energy water heater can produce more hot water at the same energy consumption.
Although the air energy water heater has the above advantages, it also has some disadvantages. First of all, due to the need to extract heat energy from the air, its energy efficiency ratio will be reduced in extremely low temperature environment, and it may even not work normally. Secondly, the price of air energy water heater is higher than that of traditional water heater, which requires higher investment cost. In addition, the air energy water heater is large in size and needs a large installation space, which will have a certain impact on the utilization of residential space. Finally, the air energy water heater needs to run the compressor, so there will be some noise during use.
To sum up, the air energy water heater uses heat pump technology to convert low-grade heat energy in the air into high-grade heat energy, thus heating water, which has multiple advantages such as high efficiency, energy saving, environmental protection and safety. But at the same time, it also needs to consider its performance degradation at very low temperature, high investment cost and large volume. For consumers, it is necessary to comprehensively consider their own situation and needs and choose the most suitable hot water equipment.