Ground Loops in Des Moines, Iowa, Geothermal Applications

You’ve finally gotten, or are contemplating getting, a a new heating and cooling system. Maybe you’re weighing the advantages of a new Geothermal HVAC. If so, you very likely want to know a little more about how such a system works.

Geothermal HVACs variously cool and heat your home by extracting ground temperature. This is possible because of an underground system called a geothermal ground loop.

Ground loops are,in essence, just a system of pipes buried in the ground. Several basic sorts of these systems are used for heating and cooling standard residential and commercial]26] buildings.

It works when antifreeze fluid travels through the pipes to transfer heat fast and efficiently to a heat pump in your house.

There are four different sorts of ground loops: Open Loop, Pond Loop, Horizontal Loop and Vertical Loop. All four fall into one of two categories: either they’re open loop systems or closed loop systems. The appropriate system for your house is determined by the structure and the environment surrounding it. Residential systems typically use vertical or horizontal loops.

Below are further explanations of each sort of ground loop.

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

Vertical ground loops are used most often in residences because, unlike horizontal loops, they don’t take up a lot of space. They’re positioned by drilling small holes in the ground that go 100-400 feet deep. Then pipes are driven into the holes and connected under ground to form the vertical loop. Next, extra pipes are attached that convey fluid to the indoor system to transfer the needed temperature from the ground.

When compared to a vertical loop system a horizontal system has to have significantly more space but is typically not as pricey considering it uses only 2 straight pipes set 6 inches in the earth in an area of ¼ to ¾ acre.

If what you want is 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
secured to the bottom of the water source. Water is then conveyed through more pipes underground to a pump, where the heat is extracted and cool water is put back into the pond. That said, in order for this system to work, the water can in no way be be acidic or else pipes will erode and filters will need replacing often.

The big 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 for use in heating and cooling your house 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 must be noted that pollution is not a by-product. The only difference in water that’s processed through a geothermal heat pump is a minute change in temperature.

Prior to installing an open loop system, it is vital to know whether a well or pond contains enough water to power your geothermal heat pump, and that it won’t drain a neighbor’s well source. See that you check with your local contractor on whether there’s enough water available to support installing an open loop geothermal heating system.