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Ground source heat pump is equipment which is used to transfer heat from the ground to the specialized areas where the earth’s heat is then transformed to multiple uses like heating up the buildings, conversion to electricity of to pre-heated domestic hot water. The key issue regarding such a facility is how to install geothermal pump. It’s because geothermal Installation requires extreme care and professionalism as cost of geothermal heating installation is substantial. Although small geothermal hvac installations are easy to conduct but the consideration of price of geothermal install is always the point of consideration.
The initial requirement for the installation of a geothermal pump is the site preparation. This phase involves demolition of any rocks or hurdles present, site clearing, earthwork, trenching and boring. In order to understand the working and installation of a geothermic heat pump, we should first try to figure out the important elements of this pump. For the installation purpose, geothermal installation manual is consulted. The ground source heat pump comprises of three main parts;
1. The Ground Loop.
2. The Heat Pump.
3. The Heat Distribution System.
The geothermic heat pump is installed in a three phase process. Each process caters the specific parts as discussed above. The geothermal ground loop installation is yet another difficult task to undertake. The ground loop comprises of a pipe buried in the ground through a borehole or in some case through a horizontal trench. While the pipe is being inserted into the ground it is usually in a closed circuit and is filled with a mixture of water and antifreeze. This mixture is pumped round the pipe and the heat is being absorbed from the ground. The ground loop can also be in a form of spiral, coil or slink which is normally used in trenches. The next most important part of a ground source heat pump is “the heat pump”. The main purpose of a heat pump is to extract heat from the ground, in a same manner as the heat is extracted from the inside of a refrigerator by the refrigerant. In order to install the geothermic pump, mainly it is further divided into three parts. These are;
1. The Evaporator
2. The Compressor
3. And The Condenser.
The evaporator is used to bring out the heat from water in the ground loop. The purpose of a compressor here is to insulate the refrigerant round the heat pump and compress it to the temperature which is required further by the distribution circuit. The last part inside the heat pump is the condenser. It is here to provide the feed to the distribution system through giving up the heat to hot water tank. The final phase of a ground source heat pump is the distribution system. It is this phase where the natural resource is finally reached to a phase where it then be used according to the requirements. It consists of radiators which are use for space heating. Also in most of the cases, it has got a water storage area for hot water supply in order to use it further for the building’s heating system. The distribution channel can have radiators or under floor heating, but it is always recommended to have an under floor heating device in use as it requires lower temperature to work efficiently. There are separate issues related to mechanical and electrical requirements for the whole project. The mechanical requirements involve the consideration of the following key areas;
1. Different sizes of Pipes and the connectors
2. Brazing
3. Use of different Valves
4. Use of chilled water, cooling water, process water and heat pump water
5. Geothermal heat pump and loop piping systems
6. Piping insulation etc.
Moving towards the electrical issues, following areas of consideration are observed during the electrical issues during the project installation;
1. Electrical demolition
2. Wiring devices
3. Supporting devices
4. Panel boarding
5. Motor control center
6. Consoles, panels, cabinet and racks installation etc.
Due to such complexities and difficulties during installations, geothermal installations jobs are considered great importance and are also highly paid.