A straight exchange ground source heat pump is extra typically referred to as a direct exchange geothermal heatpump. The geothermal heat pump was the original version of these things and is actually the earliest known sort of ground source heat pump in existence.
The direct exchange geothermal heatpump is not only the earliest variation of these devices they are likewise the very simplest version of these gadgets. The ground combining for these systems is created in a single loophole that distributes cooling agent with it. This solitary loop remains in direct contact with ground. The refrigerant overlooks of the cozy pump and also travels through the solitary loop. It removes heat from the ground as it distributes through that section of the loophole and also when it goes back to the heatpump it is warmer.
These sorts of ground resource heatpump are described as direct exchange because of the means the refrigerant exchanges warm with the ground without an additional fluid being associated with the transfer. These systems are often described as ground coupled pumps as well as should not be puzzled with the water resource heatpump.
What makes These Units Different?
The majority of systems that you see today have two loops rather than one. The loop that has the refrigerant inside it is typically contained in the cabinet of the appliance while a loophole that has water going through it circulates under the ground surface.
The water loophole is normally composed of a high thickness polyethylene piping. The water inside this piping is not simply water, yet is a blend of water and antifreeze. Occasionally rather than antifreeze the system will use methanol and also water or denatured alcohol and also water to circulate via this 2nd loophole.
This secondary loophole will be hidden well listed below the frost line on the ground. The ground is just influenced by a frost up to a certain depth and if you position the piping as well near the top of the ground you will have it at a level that can still be possibly impacted by a frost. Placing the piping at the proper depth to prevent frost and freezing temperatures will certainly enable you to stay clear of troubles with your piping cold and bursting.
Since there is a possible risk that these pipes can eventually become ruptured as well as leak the fluid that remains in them out the sorts of antifreeze that can be made use of in them are restricted. In many countries using monopropylene glycol is allowed because this is the kind of antifreeze that has the least potential to be a risk if it is leaked out.
There are also versions of these systems that have the pipes running vertically as a result of an absence of space surrounding the structure. You have to have an appropriate quantity of space in which to place the below ground piping for these systems to work effectively. When you do not have such room readily available then you have to have your piping installed up and down to make sure that you can acquire sufficient location to properly make the device job successfully.
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