Ground source heat pump | central air conditioning | floor heating equipment

Introduction to ground source heat pump: >Ground source heat pump is a high-efficiency, energy-saving air conditioning system that utilizes shallow underground geothermal resources (also called ground energy, including underground water, soil or surface water, etc.) to provide both heating and cooling. Ground source heat pumps realize the transfer of heat energy from low-temperature locations to high-temperature locations by inputting a small amount of high-grade energy (such as electrical energy). Ground energy is used as a heat source for heat pump heating in winter and a cold source for air conditioning in summer. That is, in winter, the heat in the ground energy is taken out, and after the temperature is raised, it is supplied for indoor heating. In summer, the indoor heat is taken out and released to the ground energy. Go in. The energy flow of the heat pump unit is to use the energy it consumes (such as electric energy) to discharge all the absorbed heat energy (that is, electric energy + absorbed thermal energy) to the high-temperature heat source. The energy consumed is to compress the refrigerant Freon to a high-temperature and high-pressure state, thereby absorbing the heat energy from the low-temperature heat source.
The heat pump unit device mainly consists of four parts: compressor, condenser, evaporator and expansion valve. By allowing the liquid working medium (refrigerant
or refrigerant) to continuously complete: evaporation (absorbing heat from the environment) rr The thermodynamic cycle process of compression rr condensation (release of heat) rr throttling rr and then evaporation, thereby transferring heat from the environment to the water. Compressor (rr): plays the role of compressing and transporting circulating working fluid from low temperature and low pressure to high temperature and high pressure. It is the heart of the heat pump (refrigeration) system. Evaporator (rr): is a device that outputs cold energy. Its function is Evaporates the refrigerant liquid flowing in through the throttle valve to absorb the heat of the object being cooled to achieve the purpose of refrigeration. Condenser (r): is a device that outputs heat. The heat absorbed from the evaporator is converted into the work consumed by the compressor. The heat is taken away by the cooling medium in the condenser to achieve the purpose of heating. The expansion valve ( ) or throttle valve (r): plays a role in throttling and reducing the pressure of the circulating working fluid, and regulates the circulating working fluid entering the evaporator. flow. According to the second law of thermodynamics
, the work (electric energy) consumed by the compressor acts as a compensation, so that the circulating working fluid continuously absorbs heat from the low-temperature environment
and releases heat to the high-temperature environment. Repeat the cycle back and forth.
Working Principle
The working principle of the ground source heat pump is: in winter, the heat pump unit absorbs heat from the ground source (shallow water or rock and soil) to heat the building. In summer, the heat pump unit absorbs heat from the indoors and heats the building. It is transferred and released to the ground source to realize air conditioning and cooling of the building. According to the different forms of geothermal exchange systems, ground source heat pump systems are divided into underground water ground source heat pump systems, surface water ground source heat pump systems and underground pipe ground source heat pump systems.
Heat pump installation conditions
One installation condition
Requires a certain site area
The installation of a geothermal heat exchanger requires a certain amount of underground space. The space from the ground to approximately below the ground can be used as usual. The area of the geographical tube is about one-third to one-fifth of the air conditioner area.
A certain amount of initial investment is required
The investment in drilling and underground pipes requires about one-third to one-half of the total investment in source heat pump air conditioners. But the annual energy cost savings you make can quickly recoup your investment. At the same time, the system is nearly maintenance and repair-free, which not only saves money, but also increases the value of your property.
It is necessary to consider the underground heat balance
The ground source heat pump air-conditioning system takes advantage of the characteristics of the deep earth, which is warm in winter and cool in summer, to extract energy in winter and store it in summer to ensure the efficient operation of the geothermal heat exchanger. The north is a typical region with distinct winter and summer seasons, and is the most suitable place to apply ground source heat pump air conditioning technology.