Ground Loops in Central , Ohio, Geothermal Applications

You’ve just bought or are thinking about getting a a new heating and cooling system. Maybe you’re weighing the advantages of a new Geothermal HVAC. If so, you undoubtedly want to know a bit more about how geothermal works.

Geothermal HVACs take consistent temperature from the ground to deliver hot or cool air to your home’s interior. This is possible because of an underground system called a geothermal ground loop.

Ground loops are basically just an underground pipe system. There are a few basic kinds of these systems that can be used for heating and cooling conventional residential and commercial]26] buildings.

It works when antifreeze fluid flows through these plastic pipes to transfer heat effectively and efficiently down to a heat pump in the building.

Typically used are four different kinds of geothermal ground 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 you is contingent on the specific building and the environment surrounding it. Household systems typically use vertical or horizontal loops.

Below are more specifics on each kind of ground loop.

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

Vertical ground loops are the most common type used residentially because, unlike horizontal loops, they don’t need much of space. They’re set in place by drilling small holes in the ground to a depth of 100-400 feet. Then pipes are placed into the holes and connected below ground to form the vertical loop. Next, extra pipes are attached that carry fluid to the indoor system to transfer the desired temperature from the ground.

In contrast to a vertical loop system, a horizontal system takes up much more space but is typically less pricey since it uses only 2 straight pipes placed 6 inches down in the ground in an area of ¼ to ¾ acre.

In order to make use of a pond loop system, you obviously must be close to a pond, lake, pond, or well. Coils are installed vertically and anchored to the bottom of the water source. Water is then transferred through more pipes underground to a pump, where the heat is extracted and cool water is put back into the pond. However, in order for this system to work, the water can not be acidic or else pipes will erode and filters will have to be replaced often.

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

Used water is taken care of in one of two ways: through surface drainage or water re-injection. In returning the water back to the earth, it’s worth mentioning that there’s no pollution. The only difference in water that’s processed through a geothermal heat pump is a slight change in temperature.

Prior to installing 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 exhaust a neighbor’s well source. See that you check with your local contractor on whether there’s enough water available to justify installing an open loop geothermal heating system.