The point where air energy water heaters are complained

Many people don't know much about air-energy water heaters, but only heard about energy saving and environmental protection. Air energy water heaters are also called "air source heat pump water heaters", "cold water heaters" and so on. The principle is as the name implies, the air is compressed by a compressor and converted into high-temperature heat energy to heat the water temperature. Air-energy water heaters have the characteristics of high efficiency and energy saving. The cost of its consumption is only 1/2 of electric water heaters, 10% lower than gas water heaters, and higher energy efficiency than electric-assisted solar water heaters. At first glance, it seems that the water heater industry has found an energy-saving vane, but is the actual usage really like this?

1. The most important component of an air energy water heater is the heat pump, which is also its working principle. The heat pump uses the heat-absorbing medium (refrigerant) in the equipment to collect heat energy from the air or the natural environment. After being compressed by the compressor, the temperature of the refrigerant is increased, and the heat is released by the heat exchanger to heat the cold water, and at the same time, the cold air is discharged to produce heat. Water is sent to users through the water circulation system for heating or directly used for hot water supply.

The power consumption of an air-energy water heater is the power of the compressor and the fan. It is generally around 900W. It usually takes about 3 to 5 hours to heat the water to a bath temperature (the highest temperature can only be heated to 55 degrees). The power consumption is generally about 3 degrees. The remaining hot water in the water tank waits until The next morning, the temperature dropped by about 5-10 degrees. This temperature can only be used for brushing in the morning. Moreover, in more cases, even 55 degrees cannot be reached. Generally, the operating temperature is about 30-45 degrees, and the air-energy water heater is suitable for warm baths. This is the warm water bath that air can bring.

Winter is a fatal injury to air-energy water heaters. In the northern or northwestern regions, the basic winter will be severely injured. Air-energy water heaters use air as the heat source. The energy efficiency ratio (COP) and normal operation are directly related to the temperature of the air source. At present, the design air source temperature of some air-energy water heaters on the market is 0-40 degrees Celsius, and their rated operating conditions are all At 25 degrees Celsius, this design parameter is only applicable to parts of my country south of the Yangtze River. For areas where the annual average temperature is around 10 degrees Celsius, it is difficult for air-energy water heaters to achieve the energy-saving effects they should.

3. The straightforward translation of the 24-hour constant temperature hot water means that it is always plugged in and cannot be turned off. If you want to keep the water temperature constant, the water heater must always be on. This is basically the same as the standby state of an electric water heater. What's more, it takes 3-5 hours for the air-energy water heater to heat up. If you do not choose to make an appointment in advance and want to go home to take a bath, you can only choose a 24-hour constant temperature. It consumes a lot of electricity during the initial heating. After reaching the set temperature, the unit will keep warm for several hours. When the temperature drops to the return difference (usually 5°C), the unit will reheat, which is equal to one day. There will be several heating processes. If the highest temperature of the day has passed, the heating will be heated by an electric heating system. So when you don’t need hot water, he does the same job as an ordinary electric water heater to maintain the water temperature, and multiple times a day, do you still think of energy saving? As for the electric water heater, you only need to plug it in and wait for 10-20 minutes to take a hot bath. Turn off the power after heating.

4. The appearance of air energy water heaters can be said to be giants, with a height of about 1.6 meters, which is basically as tall as a person. It is basically impossible for such a giant to be installed indoors. Not only does it affect the beauty, but there is really no place to put it. The best place to choose is the balcony, but as people's requirements for the home environment increase, consumers on the balcony are unwilling to accept this big guy.