The freon model of ground source heat pump air conditioning system

ground source heat pump air conditioning system in China is still in primary stage, the status of the demand, overall planning, using the energy characteristics and hydrogeological condition, the combination of reasonable gradually promote the ground source heat pump air conditioning skills, this ability is beneficial to optimize the power structure, on the premise of environmental protection, the progressive power use efficiency. Below is for your detailed analysis of the system mode of ground source heat pump and its advantages and disadvantages.

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1, the horizontal ground source heat pump

by horizontal buried under ground appearance 2 ~ 4 following the closing of the heat exchange system, it is cold and heat exchange with soil. This system is suitable for the construction of refrigerant.com/hfc-refrigerant' target='_blank'>refrigeration and heating area is lesser, such as villas and small single floor. The system initial investment and construction difficulty is relatively small, but covers an area of large.

2, straight type ground source heat pump

by straight hole will closed heat exchange system embedded in the 50 m to 400 m deep rock mass and soil for cold heat exchange. This system is suitable for the construction of refrigeration and heating area is larger, this space is bound to be around, such as villa and office buildings, etc. The system initial investment is higher, the construction difficulty is opposite bigger, but cover an area of an area small.

3, surface water, ground source heat pump

ground source heat pump units through the arrangement of the closing of the heat exchange system and the water exchange of heat and cold rivers, lakes, sea water, etc. This system is suitable for small and medium-sized refrigeration heating area, built close to the water's edge. It USES the water or in secure temperature below the surface of the lake and clear heat, without drilling trenching, initial investment is minimal. But demand to build deeper around, larger rivers or water.

4, groundwater type ground source heat pump

ground source heat pump units by the unit within the closed loop system through the heat exchanger and cold heat exchange by pump extraction of deep groundwater. Groundwater back into or through the pressure pump in underground aquifer. This system is suitable for construction of large area, big monomer building to the surrounding space area is finite and small building community.

in recent years, can development achieved breakthrough development. Earth's surface water and soil is a boundless collector, collecting 48% of the energy from the sun, than humans use energy more than 500 times every year. According to the heat carrier in the partition, the ground source heat pump air conditioning there are four primary ways: first, ground source heat pump exchanger; Second, the groundwater source heat pump; Three is surface water source heat pump ( Contains the sea water, river's lake river streams or surface diving) ; Four is the hybrid ground source heat pump.

surface 30 ~ 130 meters at the mercy of down, the temperature is relatively constant throughout the year, usually in 15 ~ 20 ℃. Ground source heat pump is applied to this feature, by consuming a small amount of electricity, completed by low temperature to high temperature or by high temperature to low temperature transformation, and abundant use of can. Heat transfer to the requirements of the low heat source in winter heating or heating, in summer to indoor waste heat is transferred to low heat, cool or intention of refrigeration. Advantages and disadvantages of

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a, the strengths of the ground source heat pump air conditioning

from the perspective of theory and the energy consumption on the anatomy of ground source heat pump air conditioning skills in shallow surface or underground storage of inexhaustible power, become a means of renewable power. , is that the ground source heat pump air conditioning energy saving due to its soil, surface water or groundwater as power, under equal conditions, only need to spend about 50% of the power, can supply equal energy, energy saving up to 65% than that of lithium bromide skills; Tighter than the steam type energy saving up to 40%; Equivalent to two-thirds of coal-fired boiler heating engineering. In the operation of the system, because do not use freon, refrigerant and fuels such as natural gas, gasoline, can greatly reduce damage to the ozone layer effect, cut CO, emissions.

2, ground source heat pump air conditioning use may bring questions

some primary ground source heat pump air conditioning system contains two: one is the construction of objects in the loop of the water in the air conditioning system; Second, ground source heat pump air conditioning system of some underground, the ground coupled heat pump system of the underground heat exchange device, the surface water heat pump system of surface water heat exchange system of Wells, the groundwater heat pump system.

( 1) Surface water heat pump system: the surface water temperature is strongly influenced by climate, similar to air source heat pump, the use of the deep water, lake water and sea water during endothermic and exothermic surface water source heat pump system, first it is necessary to focus on is water to have depth, no 5 m depth of rivers, lakes and seas would not have to think, in general, only under 10 m depth have use value. About belong to ground source heat pump water source heat pump units, if be jiang, river, stream, the water temperature is suitable condition, will be able to use.

, for example, wuhan east lake shallow water lake of summer water temperature higher than the wet bulb temperature, such as no use value, water temperature slightly higher than the temperature in winter, can be used as a heat source water. Ningbo fenghua river 7 m deep 31. 2 ℃, the pearl river bottom 31. 8 ℃, water thermal pollution, use of little value. Can be used in the Yangtze river water as heat source of surface water heat pump system, but the river water level is very low in the winter, from the efficiency of water and flood control point of view to think, practice is still extremely hard.

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