1. Insufficient refrigerant circulating in the heat pump
Air energy heat pump has good environmental protection and safety, based on the working principle of heat pump and its own technical support. The heat pump host relies entirely on electric energy as the working power. When burning hot water, there is no release of harmful substances, so it will not cause damage to the environment. There is a mature water and electricity separation technology inside the heat pump host, leaving the power supply and refrigerant in the host. There is no electricity or refrigerant in the indoor circulating water, and there is no leakage of electricity and fluorine, which improves the safety of users.
However, the air source heat pump needs electric energy to drive the compressor, absorb heat energy from the air, and then transfer the heat energy to the circulating water. The main engine of the heat pump also uses refrigerant (refrigerant), which needs to carry heat through the gas-state and liquid-state conversion of refrigerant, so as to achieve the absorption of heat in the air. After the air source heat pump is installed, the staff will add enough refrigerant to the heat pump host. If the air source heat pump is used for a long time, it will be affected by various factors. After the refrigerant leaks, the amount of refrigerant in the system will be reduced, and the ability to carry heat will be reduced, resulting in a significant drop in water temperature during hot water heating. At this time, it is necessary to contact relevant staff for detection. After determining that there is insufficient refrigerant, repair the leakage point of refrigerant leakage and refill enough refrigerant.
2. There is too much scale inside the pipe
The air source heat pump system mainly adopts water circulation. The water contains a certain amount of impurities and metal ions that are easy to form scale. During the long-term heating process of the air source heat pump, the accumulated scale will gradually increase, which will reduce the thermal conductivity of hot water, narrow the pipes inside the system, and even cause blockage. Therefore, the heating efficiency of hot water will decrease, and the water temperature will be insufficient.
In general, water system equipment needs regular maintenance, especially for wading equipment with higher water temperature, the maintenance frequency should be higher. For the air source heat pump, cleaning the scale and maintaining the system every 2-3 years can keep it in good operating condition. In addition, the circulating water should be filtered when the system is installed. Of course, the water softened by the water purification equipment can reduce the formation of scale to a greater extent.
3. The environment around the heat pump host becomes worse
The air source heat pump absorbs the heat energy in the environment through the heat pump host. Although coal or natural gas is not used for heating, the heat pump host needs to absorb the heat of the surrounding environment. It can be seen that the surrounding environment of the heat pump host constantly affects the efficiency of the heat pump host.
Because some air source heat pumps are installed in places where plants grow luxuriantly, when the surrounding of the heat pump host is covered with green plants, the air flow becomes slow, and the heat that can flow to the surrounding of the heat pump host becomes less, which leads to the decline of the heating efficiency of the heat pump host. For installation in a place where the surrounding environment is relatively open and there is no impact of green plants, it should be noted that sundries should not be stacked around the heat pump host, which will also affect the efficiency of the air source heat pump. The more open the surrounding of the air source heat pump host, the faster the air flow speed, and the more favorable it is for the heat pump host to absorb heat from the air, so as to better improve the temperature of hot water.
4. The environment of the heat pump host becomes worse
The working principle of air source heat pump is similar to that of air conditioning. It needs to exchange heat with air through the fins of the evaporator on the heat pump host. The higher the efficiency of fin heat exchange, the more heat it absorbs, and the faster the water temperature rises during heating. Because the fins of the evaporator of the heat pump host are exposed to the air, they are often polluted by some substances in the environment, such as dust, oil, hair, plant pollen, etc. floating in the air, which are easy to adhere to the fins. Smaller leaves and branches are also easy to fall on the heat pump host, and even a lot of spider webs are wrapped around the fins, which leads to a decrease in the efficiency of heat exchange from the air of the heat pump host, making the water temperature insufficient when heating.
Based on this situation, the heat pump host should be cleaned at intervals. The diluted special cleaning agent can be sprayed on the evaporator fins, then the iron brush is used to clean the gaps, and finally the clean water is used to wash, so as to keep the fins of the heat pump host clean, improve the heat exchange efficiency, and improve the service life of the heat pump host.
5. The ambient temperature is getting lower
The air source heat pump also has the ability to adapt to the environment. Although the air source heat pump can adapt to the temperature environment of – 25 ℃ to 48 ℃, the air source heat pump can also be divided into normal temperature air source heat pump, low temperature air source heat pump and ultra-low temperature air source heat pump. Various models can adapt to different temperature environments. Normal temperature air source heat pumps and low-temperature air source heat pumps are used more in the south, and ultra-low temperature air source heat pumps are used more in the north.
If the normal temperature air source heat pump is used, the heating efficiency of the heat pump host will decrease when encountering the bad situation of ultra-low temperature environment, making the heat for heating the water temperature insufficient. In this case, when the temperature rises, the high-efficiency heating performance can be automatically restored. Of course, it can also be replaced with a heat pump host adapted to the low-temperature environment, so that the air source heat pump can always maintain its high-efficiency heating capacity.
Summary
After years of technical research and development, air source heat pumps can well adapt to various use environments. Of course, there will be insufficient heating efficiency. If the refrigerant circulating inside the heat pump is insufficient, the scale inside the pipe is too much, the environment around the heat pump host becomes worse, the environment around the heat pump host becomes worse, and the ambient temperature around the heat pump host becomes lower, the ability of the heat pump host to produce hot water will be affected, and the heating efficiency will naturally decrease. When the hot water temperature is insufficient, the reason should be found out first, and then the corresponding solution should be given.
Post time: Sep-12-2022