Ground Loops in Kearney, Nebraska, Geothermal Applications

You’ve just purchased or are thinking about purchasing a a new heating and cooling system. Maybe you’re considering a new Geothermal HVAC. If so, you probably want to know a bit more about how such a system works.

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

Ground loops are,in essence, just a series of pipes buried in the earth. There are various basic kinds of geothermal loop systems that can be used for heating and cooling most residential and commercial buildings.

Antifreeze fluid flows through the pipes to transfer heat fast and efficiently to a heat pump in the house.

There exist four different types of geothermal ground loops: Open Loop, Pond Loop, Horizontal Loop and Vertical Loop. These are divvied up into two categories categories: either they’re open loop systems or closed loop systems. The best system for you is determined by your structure and its surroundings. Household systems primarily 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 circulate water through them.

Vertical ground loops are used commonly in residences because, unlike horizontal loops, they don’t take up a lot of space. They’re installed by drilling small holes in the ground to a depth of 100-400 feet. Then pipes are driven into the holes and connected below the ground to form the vertical loop. Next, more pipes are attached that convey fluid to the indoor system to transfer the desired temperature from the ground.

In comparison with a vertical loop system, a horizontal system requires significantly more space but is actually less expensive considering it uses only 2 straight pipes set 6 inches in the earth within an area of ¼ to ¾ acre.

In order to have a pond loop system, it should go without saying that you must be near a pond, lake, pond, or well. Coils are installed vertically and attached 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 Water is then conveyed through more pipes underground to a pump, where the heat is withdrawn and cool water is returned to the pond. Nevertheless, 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 to be replaced often.

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

There are two ways to take care of used water: through surface drainage or water re-injection. In returning the water back to the earth, it is crucial to note that there is no pollution generated. The only difference in water that’s processed through a geothermal heat pump is a minor change in temperature.

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