Ground Loops in Central Minnesota, Minnesota, Geothermal Applications

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

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

Ground loops are essentially just a system of pipes buried in the ground. A few basic sorts of ground loop systems are used for heating and cooling ordinary residential and commercial]26] buildings.

The way it works is, antifreeze fluid goes through these plastic pipes to move heat effectively and efficiently down to a heat pump in the house.

There are four different kinds 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 best system for your home is determined by the building and its environment. Household systems usually use vertical or horizontal loops.

Below are further explanations of each sort of ground loop.

Closed systems, which consist of vertical, horizontal, and pond loops, continuously move 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-diameter holes in the ground to a depth of 100-400 feet. Then pipes are driven into the holes and connected under ground to form the vertical loop. Next, more 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 much more space but usually doesn’t cost as much since it just uses 2 straight pipes set 6 inches in the earth in an area of ¼ to ¾ acre.

In order to install a pond loop system, you obviously 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 moved through more pipes belowground to a pump, where the heat is extracted and cool water is put back into the pond. Nevertheless, in order for this system to work, the water must 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 example. From there, it directly pumps water into the heat pump unit to be used in heating and cooling your home or other structure.

There are two ways to dispose of used water: through surface drainage or water re-injection. In returning the water back to the earth, it’s worth mentioning that pollution is not a by-product. The only difference in water that’s processed through a geothermal heat pump is a negligible change in temperature.

Before you install an open loop system, it is vital to know whether a well or pond holds enough water to power your geothermal heat pump, and that it won’t use up a neighbor’s well source. Make certain you check with your local contractor on whether there’s enough water available to justify installing an open loop geothermal heating system.