Ground Loops in , Maryland, Geothermal Applications

You’ve just purchased or are thinking about getting a a new heating and cooling system. Maybe you’re partial to the idea of a new Geothermal HVAC. If so, you probably want to know a little bit more about how one works.

Geothermal HVACs take consistent temperature from the ground to put hot or cool air into your home. This works because of an underground system called a geothermal ground loop.

Ground loops are basically just a series of pipes buried in the earth. There are a few basic kinds of geothermal loop systems that can be used for heating and cooling conventional residential and commercial]26] buildings.

Antifreeze fluid flows through these plastic pipes to transfer heat quickly and efficiently up to a heat pump in your house.

Typically used are four different sorts of loops: Open Loop, Pond Loop, Horizontal Loop and Vertical Loop. All four are split into two distinct categories: either they’re open loop systems or closed loop systems. The right system for your home is contingent on the specific building and the environment surrounding it. Residential systems typically use vertical or horizontal loops.

Below are further explanations of each kind of ground loop.

Closed systems, which include vertical, horizontal, and pond loops, continuously push water through them.

Vertical ground loops are used most often in residences because, unlike horizontal loops, they don’t take up a significant amount of space. They’re positioned by drilling tight-diameter holes in the ground to a depth of 100-400 feet. Then pipes are inserted into the holes and connected below the ground to form the vertical loop. Next, extra pipes are attached that carry fluid to the indoor system to transfer the necessary temperature from the ground.

When compared to a vertical loop system a horizontal system requires significantly more space but is typically not as pricey since it uses 2 straight pipes set 6 inches in the ground within an area of ¼ to ¾ acre.

In order to make use of a pond loop system, you plainly must be close to a pond, lake, pond, or well. Coils are installed vertically and affixed to the bottom of the water source. Water is then conveyed through more pipes underground to a pump, where the heat is withdrawn and cool water is put back into the pond. However, in order for this system to work, the water can in no way be be acidic or else pipes will corrode and filters will need replacing often.

The key difference between open and closed looped systems is the open loop’s need for an adequate source of groundwater, like a well or pond. From there, it directly pumps water into the heat pump unit to be used in heating and cooling your house or other structure.

Generally speaking, used water is taken care off in either of the following ways: through surface drainage or water re-injection. In returning the water back to the earth, it is crucial to note that there’s no pollution. The only difference in water that’s processed through a geothermal heat pump is a minor change in temperature.

Before you install an open loop system, it is essential to know whether a well or pond has enough water to power your geothermal heat pump, and that it won’t use up a neighbor’s well source. Make sure you check with your local contractor on whether there’s enough water at hand to go ahead with installing an open loop geothermal heating system.