Geothermal Earth Loops for Hattiesburg January 13, 2012 In part three of our Introduction to Geothermal series, we are going to discuss geothermal loop systems and how each type works. A geothermal loop is the series of underground pipes used to move heat to and from the earth. The pipes are formed out of high-density polyethylene to establish a dependable, long-lasting system. They are fastened together using thermal fusion that will develop a bond that is far stronger than the original pipe itself. In fact, a properly installed loop can remain up to 200 years. There are two leading types of geothermal loop systems that are mostly used in today's installations: open loop systems and closed loop systems. Both systems have different pros and cons for your heating or cooling solution. We at American Air Specialists have the knowledge and expertise on both types, and we will help you by selecting the best option for your geothermal installation. Open loop geothermal solutions are designed to utilize the natural groundwater from beneath your home. Using a well, water is from an existing aquifer and moved to the geothermal heat pump where its heat is withdrawn and the water is pushed back into the ground or to an assigned runoff. Since the water that you are handling is not being altered in any way, the only thing that is being returned to the ground is water that is just a little warmer or cooler (depending whether you're in heating or cooling mode). One thing to watch out for with an open loop system is water quality. Mineral build-up can arise from poor quality water. This can be attended to with an occasional cleaning. If the water in the ground has higher iron content, you will need to make sure that the discharge water is prevented from coming in contact with air before it is returned in order to prevent clogs. Closed loops are precisely as they sound. Rather than pumping water from a well and depositing it elsewhere, water is circulated in a completely sealed circuit with a small amount of earth friendly antifreeze. There are two primary types of closed loop installations: horizontal and vertical. Installing the system horizontally needs a decent amount of property. The piping is embedded in trenches between 4 and 6 feet deep and can be up to 400 feet long. If you reside on a smaller lot, the loops can be installed vertically by boring straight down using drilling equipment. This kind of installation can be installed in as little as a 10ft by 10ft area. In either case, the larger the building, the larger the geothermal heat pump and loop needs to be. A good estimate is that for every ton of system capacity, you will need 500 to 600 feet of pipe. Contact American Air Specialists today to learn more about what system options are available to you here in Hattiesburg. Back To News