The concept of land source heat pump "was first proposed by Swiss experts in 1912, and the technology of this technology began in Britain and the United States.The soil is transferred to the building, and then the cold volume of the ground is transferred to the building in summer, and a hot and cold cycle is formed an annual.Bar!
What is a ground source heat pump
The ground source thermal pump system is an environmentally friendly energy utilization system that uses shallow ground to perform heating and cooling technology.The ground source thermal pump system usually transferred the heat or cold amount in the underground soil to the place required. It also used the huge heat storage and cooling capacity of underground soil.The cold volume of the ground is transferred to the building, and a hot and cold circulation system is formed an annual capacity to achieve the function of energy conservation and emission reduction.
The ground source thermal pump system is a heating air -conditioning system composed of water source heat pump units, geothermal exchange systems, and in -building systems based on rocky body, groundwater or surface water.The base of the base of the ground is different. The ground source thermal pump system is divided into a ground -buried power heat pump system, groundwater source heat pump system, and surface water floor source heat pump system.
Earth source heat pump installation
Earth source heat pump installation process and precautions
Drilling: Before drilling, you should understand the existing underground pipelines, the functions of the underground structure and its accurate location in the buried pipe site, and avoid damage to avoid damage; according to the size of the building area, the refrigeration volume is determined by the size of the building., Calculate accurately before drilling; ensure the vertical vertical of the drilling pole when drilling to ensure that each vertical hole is parallel to prevent the pores;
Ending pipe: The depth of the lower tube must be guaranteed when the lower tube.There are two types of lower tube methods: manual subordinate and mechanical pipelines.Before the lower tube, the U -shaped tube should be bundled with the grouting pipe, and the lower tube construction should be performed immediately after the drilling.After the drilling is completed, due to the large amount of water in the hole to produce buoyancy effects, it causes some difficulties to the decentralization tube, and because the sedimental deposition in the water will reduce the effective depth of the hole. To this endThe U -shaped tube is put in and takes fixed measures to prevent floating;
Horizontal paving: Before the horizontal pipe is paved, it must be paved with fine sand that is equivalent to the thickness of the pipe diameter at the bottom of the ditch. The pipes should not be broken and twisted during installation. There must be no stone in the sand., And there are fixed measures;
Backfill: Test pressure must be performed before returning to ensure that there is no leakage.The vertical pipe back to fill the vertical hole grouting materials should be mixed or special materials with pussy soil and fine yarn. You can also use the mud precipitation produced during the drilling process to ensure that the drilling is dense and empty., Loose, uniform, and excluding stalls and soil blocks. The process of filling back and compacting should be uniform, and the pipeline shall be overhead;
The computer room and the end: After the outdoor part is installed, the indoor part is installed.The installation of the indoor part includes the installation of the host and the end of the indoor air conditioner and the end of the heating. Before the installation is installed, carefully check whether the specifications and models of the arrival equipment are consistent with the configuration scheme, and determine the installation location according to the actual situation of the on -site.
Earth source heat pump maintenance
1. The maintenance of the compressor
1) The appearance check of the compressor
Checking method: Visual inspection standards: Check the connection reliability of the compressor inlet and export valve, whether there is a leak; you should pay attention to the sound of the compressor running during the test to determine whether it is abnormal.
2) Voltage and current measurement
Measurement tools: Pie -shaped current meter operates with a clamp -shaped current meter and runs the current.The cable should be located at the center of the measurement ring when the running current is measured.Measurement standard: The operating voltage range is 380V (± 10%), and the operating current should not be greater than the rated input current of the motor nameplate.
3) Measurement of insulation resistance
Measurement tools: Meter measuring method: In the case of the unit cutting the power, the three relative ground resistance values ??of the compressor are used ...
2. Maintenance of condenser
Maintenance tools: Pipe cleaning machine or chemical cleaning agent maintenance method: The condenser of water -cooled units uses a shell tube water cooling condenser. The cleaning and maintenance work of the condenser is very important. It should be kept good in cooling water.Ensure that the heat transfer tube is not stable, maintenance can be used for mechanical cleaning and maintenance, and chemical cleaning and maintenance.
Mechanical cleaning method:
1) Turn off the cooling water import and export valve;
2) Disassemble the front and back of the condenser;
3) Clean up the end cover of the condenser, scalce and rust in the water room cavity;
4) Wash the heat transfer pipeline with a pipe cleaning machine;
5) Rinse with water after cleaning, reach the standard, and cover the end cover.Maintenance standards: After maintenance, water room ...
3. Maintenance of evaporator
1) Check the scaling of the cold water quality and evaporation device, and do a good job of discharge and water change;
2) Detect the temperature difference between the water side and the refrigerant
3) During maintenance, open the sewage valve at the bottom of the evaporator to discharge the impurities sludge, and remove the sewage ball valve if necessary to increase the sewage port;
4) In particular, it should be noted that during winter, it is necessary to prevent water frozen from being damaged by evaporator;
5) The temperature of the sensor that causes the sensor to cause the induction is the temperature of the air rather than the evaporator, which causes the low temperature alarm frequently;
6) The sewage work during maintenance can be referred to the following steps: (1) Run the pump for 10 minutes (2) Check the water quality at the sewage outlet (3) According to the water quality, suspension, rust, etc., it is recommended that users artificial mechanical cleaning or chemical cleaning ...Mowing
4. The maintenance of the pipeline and pipelines of the unit
1) Inspection and detection tool of the expansion valve: Surface contact thermometer check method: Check the oil traces at the connection of the expansion valve, determine whether the units expansion valve is appropriate when the unit is running according to the overheating of the crew, the compressor exhalation end exposure degree,Check whether the binding position of the temperature packet is loose and whether the capacity of the temperature packet is worn.Rust -proof protection for the balance tube connecting nut and valve bolt.
2) The inspection of the visual liquid lens and the replacement of the dry filter
Checking tool: surface contact thermometer
Checking method: Visidally check the test strip of the visual liquid mirror to determine the dry and humidity of the refrigerant of the system, and confirm whether the dry filter element needs to be replaced. The temperature difference between the filter is measured by the surface contact thermometer, which is lower than 0.5 ° C indicates that the filter is clean.
Dry filter replacement method: 1. First turn off the outlet valve of the high -voltage storage liquid, start the unit and draw the system ...

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