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Heat Pump High-grade Thermal Energy Device Sep 29, 2017

First, the concept of heat pump

Water from high to low, heat from high temperature objects are fully delivered to low temperature objects, which is a natural law. However, in real life, for the needs of agricultural irrigation, domestic water and so on, people use water pumps to send water from low to high. The "heat pump" is a kind of natural air, water or soil to obtain low-grade heat, through the power of work, can be used by people to use high-grade heat device. (Explain: here refers to the low-grade thermal energy is the air, water or soil contained in the temperature, regardless of the temperature is zero or minus, the temperature always exists, the higher the temperature the more energy to get) input 1kw of electricity Can produce 3-5kw of energy, and the traditional direct energy conversion is impossible to more than 1: 1, that is, 1kw of electricity to produce up to 1kw of energy. So the energy saving of the heat pump is obvious. In the increasingly tense energy today, heat pump technology in recent years in the world much attention to the new energy technology.

Second, the heat pump classification

Large can be divided into two categories: air source heat pump (also known as air-cooled heat pump) and ground source heat pump. Ground source heat pump can be divided into underground water source heat pump, ground buried ground source heat pump (formerly known as soil source heat pump), surface water source heat pump.

Air source heat pump is from the air to obtain low-grade energy after doing work to get high-grade energy devices.

Groundwater source heat pump is from the groundwater to obtain low-grade energy through the work done after the high-grade energy devices.

Ground to ground source heat pump (formerly known as the source of the source heat pump) is from the underground soil to obtain low-grade energy through the work done after the high-grade energy devices.

Surface water source heat pump is from the surface water (such as rivers, rivers, lakes, sea) in the low-grade energy through the work done after the high-grade energy devices.

Third, the use of heat pump and application

According to the different functions of the heat pump can be used for winter heating, summer cooling, and the production of hot water. Heat pump applications are quite extensive, large can be used for factories, shopping malls, office buildings, hotels, hospitals, schools, swimming pools, bathrooms and other places, such as small family.

Fourth, the development of the status quo

At present, the above four kinds of heat pump in the air source heat pump and ground buried ground source heat pump application is the most. Groundwater source heat pump applications need to extract groundwater, irrigation is not good, then the groundwater will be reduced due to ground floor drop, and groundwater pollution may be, so the application limit is relatively large. Surface water source heat pump applications need to be close to rivers and lakes and other natural resources, so the application conditions are also subject to restrictions.

Comparison of Air Source Heat Pump and Ground Ground Heat Pump

Air source heat pump has the following advantages: First, the application site is not restricted, as long as you can put the host can, do not need to drill wells. Second, the cost is relatively low.

Inadequate: energy efficiency ratio will be reduced with the air temperature decreases, the current air source heat pump minimum operating conditions for the environment is minus 20 degrees, but the real outdoor environment so cold, the operation of the energy efficiency ratio will be very low. But for the cold winter in the south is about zero temperature, the air source heat pump can deal with.

Ground source heat pump has the following advantages: First, no matter how the external temperature changes, the temperature of the underground soil is always constant temperature of 15-20 degrees, so the energy efficiency ratio of about 5 or so. Second, with a heat recovery system, the summer cooling at the same time can get free hot water. (Some air source heat pump also bring this function)

Inadequate: one, need to have a place to drill wells. Second, the higher cost.

For home applications, if it is a villa, there is a place to drill wells, ground source heat pump is undoubtedly the best choice. If it is a commercial housing, the air source heat pump is the best choice.

Speaking about the introduction of the heat pump, we may still no concept. In fact, we now use the air conditioning is a heat pump, air source heat pump. However, the air conditioning pipeline is the cycle of freon, so called fluorine system air conditioning. And now introduced the heat pump (including air source heat pump) are using water cycle, so called water system. The benefits of water system is not only can be used to do air conditioning, can also be used to do warm, cold, hot water, a machine with more.