The term geothermal literally means Earth/Ground (Geo) Warmth (thermal). Geothermal, or ground source heat pumps, take advantage of the constant ground or groundwater temperatures to condition your home.
A refrigerant loop with a compressor extracts warmth from one side (the ground) and pumps it to the heating loop in your home. It’s basically the identical process that happens in your fridge: heat is extracted through a compressor and refrigerant loop from the inside of your fridge/freezer and rejected into your house.
In the summer, the geothermal heat pump reverses its cycle. While in an air-conditioning mode, warmth from the house is rejected into the ground or ground water.
What makes these methods such a good selection for residential heating and cooling is that they don’t rely on outside air temperatures. They’ll maintain your home comfortable as efficiently on a windy, zero-degree winter day as on a forty-degree day. Provided of course, that your house is well insulated and tight.
Geothermal warmth pumps are also a very environment friendly and a nicely-designed system will use 25-50% less energy than conventional heating and cooling techniques (Source: US DOE).
Water-to-Water Geothermal Warmth Pumps
These types of programs are generally used for heating only. They’re put in instead of a traditional gasoline or oil furnace to maintain your own home warm and provide domestic scorching water.
You will need to know that heat pumps work most effectively when the temperature difference between the warm source (ground) and the warmth sink is small.
Ground temperatures range anyplace from 50 to seventy five degF, relying on the place you live. This implies that geothermal warmth pumps are usually not suitable for normal hot water baseboard functions, pompe de caldura principiu de functionare which are designed for water temperatures of a hundred and eighty degF. Floor heat and low-temperature radiators require water temperatures within the range of ninety five to a hundred and forty degF.
Some newer models are now outfitted with so-called desuperheaters that may transfer extra rejected energy from the compressor to heat domestic water to your bathtub, shower and sinks.
Water-To-Air Geothermal Warmth Pumps
These types of ground source heat pumps are generally used whenever you want air conditioning. The ground “water” is the heat sink, where you reject the heat from the house while in air conditioning mode. While in heating mode, energy is extracted from the ground water and “pumped” into the “air” by means of the compressor. The “air” is distributed by way of your property through duct work.
In any other case, they function the identical method as water-to-water warmth pumps. And again, the efficiency of a geothermal heating and cooling system is far better than that of a traditional system.
Vital To Know
The first step towards making a geothermal heat pump system be a reliable and efficient heating (and cooling) system in your home is to minimize the heating and cooling requirements with a properly-insulated building envelope and strategically placed windows for passive solar gain.
Not only is your first value reduced, because your system shall be smaller. You will also tremendously increase the consolation of your home.
These highly efficient and reliable techniques are best designed and put in by professionals. It is not really helpful to make this a DIY project. These methods should meet specific requirements. Especially the piping specified by the ground, or right down to the ground water table, should be designed and installed accurately to ensure that your geothermal warmth pump system works as intended.