The Air source heat pump has a process of heat exchange for many times. In the heat pump host, the compressor works first to exchange the heat in the ambient temperature to the refrigerant, then the refrigerant transfers the heat to the water cycle, and finally the water cycle transfers the heat to the end, so as to change the circulating water into the water temperature of different temperatures and obtain different uses.
1. Provide water temperature of 15 ℃ – 20 ℃ for central air conditioning
The biggest difference between the Air source heat pump and the ordinary central air conditioning is that the emphasis is different. The Air source heat pump Air source heat pump focuses on heating, but the cooling effect is also good, while the ordinary central air conditioning focuses on cooling, but the heating effect is very general. The Air source heat pump provides a water temperature of 15 ℃ – 20 ℃, and the indoor fan coil can achieve the cooling effect of the central air conditioner. However, compared with the ordinary central air conditioning, the evaporator area, air exchange volume and fin area of the Air source heat pump are much larger than those of the ordinary central air conditioning. When the evaporator turns into a condenser through the conversion of the four-way reversing valve in the heat pump host, the heat dissipation area of the condenser is also larger than that of the ordinary central air conditioning, and the heat dissipation performance is also stronger. Therefore, the cooling capacity of the Air source heat pump is not inferior to that of the ordinary central air conditioning. In addition, water circulation is used for heat exchange in the Air source heat pump room. The air outlet temperature is higher, the air outlet is softer, the cold stimulus to the human body is smaller, and the impact on the humidity is smaller. Under the same cooling temperature, the comfort of the Air source heat pump is higher.
2. Provide 26 ℃ – 28 ℃ water temperature, which can be used as constant temperature hot water of swimming pool
The Air source heat pump heats the circulating water to 26 ℃ – 28 ℃, which is suitable for the heat source of the constant temperature swimming pool. In recent years, with the continuous improvement of living conditions, people have higher and higher requirements for living comfort, and the demand for domestic hot water in winter is also higher and higher. Many people have formed the habit of swimming in winter, so the demand for constant temperature swimming pool is gradually increasing. Although many equipment can reach the constant temperature of the constant temperature swimming pool, many projects will consider the energy saving of the constant temperature swimming pool. For example, the traditional gas-fired boiler heating the constant temperature swimming pool can play a good constant temperature effect, but the production of low-temperature water is not the strength of the gas-fired boiler. Frequent startup and low combustion efficiency will lead to an increase in energy consumption; Another example is that the electric boiler heating the constant temperature swimming pool can also achieve the effect of constant temperature quickly. However, the utilization rate of electric energy is relatively low, and the fluctuation of water temperature will inevitably lead to the increase of energy consumption. However, the Air source heat pump is different. The production of low-temperature water is its strong point, and it has an ultra-high energy efficiency ratio. It can obtain more than 3-4 times of heat by consuming one degree of electricity. Therefore, the Air source heat pump as the heat source of the constant temperature swimming pool is economical and practical.
3. Provide 35 ℃ – 50 ℃ water temperature, which can be used for floor heating and domestic hot water
When the Air source heat pump produces hot water at about 45 ℃, the energy efficiency ratio is very high, which can generally reach more than 3.0. The energy conservation is also strong, and the operation state is relatively stable. This is also one of the reasons why large projects such as factories, schools and hotels use Air source heat pump s to produce domestic hot water.
With the continuous promotion of “coal to electricity”, Air source heat pump gradually replaces traditional coal-fired and oil fired boilers and becomes one of the main equipment required for heating. It is well known that the water supply temperature of the ground heating is between 50 ℃ – 60 ℃. This is because the gas wall hanging furnace is the most efficient when producing this water temperature. If the water supply temperature is a little lower, the energy consumption of the gas wall hanging furnace will be higher. When the water supply temperature of the ground heating reaches 45 ℃, the heating efficiency is already very high. However, the use of Air source heat pump for ground heating can save more than 50% of the cost compared with electric heating, Compared with the gas wall hanging furnace heating, it can save more than 30% of the cost. If the design and installation of indoor floor heating are done well, and the thermal insulation performance of the building is improved, the water supply temperature of the Air source heat pump will be reduced to 35 ℃, and the energy conservation of floor heating will be higher.
4. Provide 50 ℃ water temperature, which can be used for agricultural greenhouses and animal husbandry
Nowadays, many vegetables in the vegetable market are supplied in greenhouses, and fresh vegetables are available all year round. This is also due to the constant temperature environment of the agricultural greenhouses. The traditional agricultural greenhouses need heating equipment in winter, and basically use coal-fired hot-air stoves. Although the temperature required by the crops in the agricultural greenhouses can be obtained, the energy consumption is high, the pollution is large, and special personnel are required to guard against flameout, There will also be large temperature fluctuations and safety hazards. In addition, the constant temperature of animal husbandry is also conducive to the growth of animals and aquatic products.
If the heating equipment of agricultural greenhouses and animal husbandry is replaced with Air source heat pump s, it is easy to achieve a constant temperature of 50 ℃. The temperature rise is not only uniform, but also fast. The temperature in the shed is monitored through the intelligent control program, without the need for special personnel to be on duty. It can also avoid potential safety hazards. The most important thing is that the energy conservation is high. Although the initial investment cost will be higher, the constant temperature in the shed is increased, which reduces the risk of economic loss caused by temperature fluctuations. In addition, the service life of the Air source heat pump is relatively long. Long term investment can not only reduce hidden dangers, but also clean energy and reduce the use cost.
5. Provide 65 ℃ – 80 ℃ water temperature, which can be used as a radiator for heating
For both commercial and household use, the radiator is one of the heating terminals. High temperature water flows in the radiator, and heat is released through the radiator to achieve the indoor heating effect. Although there are many materials available for radiators, the heat dissipation methods of radiators are mainly convection heat dissipation and radiation heat dissipation. They are not as fast as fan coil units and are not as uniform as floor heating. Therefore, the indoor heating effect needs to be achieved, and the water supply temperature above 60 ° C is usually required. In winter, the Air source heat pump must pay more electric energy to burn high-temperature water. The larger the heating area, the more radiators are required, and of course, the higher the energy consumption. Therefore, it is generally not recommended to use radiators as the end of the Air source heat pump , which is also a great challenge to the heating efficiency of the ordinary Air source heat pump . However, selecting a good model of the Air source heat pump , It is also feasible to use high temperature cascade heat pump as the heat source of radiator.
Summary
With the characteristics of energy saving, environmental protection, safety, stability, comfort and long life, Air source heat pump has successfully entered the ranks of domestic heating equipment. With the continuous progress of Air source heat pump technology, the fields involved are more and more extensive. It plays an important role not only in constant temperature greenhouse, animal husbandry, drying, drying, metallurgy and other fields, but also in household refrigeration, heating and domestic hot water. With the attention of all walks of life to “energy saving and emission reduction” and “clean energy”, the application field of Air source heat pump is still increasing.
Post time: Aug-15-2022