Geothermal HVAC
In contrast to traditional HVAC systems that rely on fuel oil, natural gas propane or electricity geothermal can provide two-in-one heating and cooling. The temperatures of the earth below the surface remain fairly constant throughout the year.
A geothermal system is comprised of an underground heat pump, loops, and a distribution system (such as air ducts). Learn more about the different components that make up this energy-efficient system:.
Ground Loop
The Ground Loop is vital to the durability and efficiency of a geothermal heating and cooling system. It is comprised of pipes that can be drilled or slit in the yard to connect to your home’s heat pumps. The piping is then filled with a water-based fluid that circulates to absorb or disperse heat in accordance with your home’s needs. The ground’s temperature is relatively constant four to six feet below the surface, making it an ideal energy source for a geothermal system.
When the system is heating, the liquid that transfers heat absorbs heat from the earth. It then carries that heat to the heat pump in your home. The fluid is then pushed into the loop, where it starts circulating again. In cooling mode, the system employs the opposite method to eliminate the heat that is left and return it back to the loop, where it begins the next cycle.
In a closed loop system the piping is filled with a water-based solution, and then buried in the ground. The solution is safe and not harmful to the environment, and it does not affect the water supply of underground. The system can also make use of a pond or lake to provide heat transfer fluid, which is more environmentally friendly.
Based on the space available, closed and open systems may be installed vertically or horizontally. Vertical systems require less trenches than a horizontal one and minimizes disturbance to your landscaping. It is ideal for areas in which soil depths are low or in areas where existing landscaping must be maintained.
Regardless of the type of ground loop system, it is essential to select an experienced installer. Geothermal systems require a lot of energy to run, and it is crucial to have an efficient and well-designed system in place. A well-designed installation will ensure the longevity of your system, and will help you save energy costs over the long term. It is also essential to flush the system regularly to remove any mineral buildup, which can reduce the flow of the heat transfer fluid and reduce the efficiency of the system. GeoDoctor experts can help you determine the right system for your house.
Vertical Loop
Geothermal energy comes from the Earth and is utilized to cool or heat buildings. This energy can be harnessed using underground loops that absorb heat and then transfer it into your home. The most commonly used type of geothermal system can be known as a vertical ground loop. This kind of system is typically employed in commercial and residential applications. The heat pump in this system absorbs the heat energy from the ground and transfers it to your office or home. In the summer, it works in reverse to provide cooling.
The pipes that are buried store the thermal energy that flows from the earth to your building. These pipes are an essential component of any geo-thermal hvac system. The pipes are made of high-density polyethylene. They circulate a mixture of water and propylene glycol, which is a food-grade antifreeze through the system. The temperature of the soil or water is fairly constant for only a few feet below the surface. This allows the closed-loop geothermal heat pump to work more efficiently than other heating systems like gas furnaces and boilers.
Loops can be installed in a trench horizontally or inserted in boreholes drilled from 100 to 400 feet deep. Horizontal trenches are ideal for large homes with lots of land, while vertical boreholes are ideal for homes and businesses with small spaces. Installing a horizontal ground loop involves digging trenches, which could take a considerable amount of time and effort. Additionally the ground needs to be compacted to ensure the loops have a firm hold on the soil.
On the other side, a vertical loop system can be set up quicker and with less effort than a horizontal loop field. The technician digging holes that are 4 inches in diameter and approximately 20 feet apart, and installs the piping in order to create a closed loop. The number of holes needed will depend on the size of your structure and the energy demands.
To keep your geothermal heating and cooling system running at its peak, it is important to properly maintain the loop fields. This includes cleaning the loop fields as well as performing periodic bacteriological tests.
Horizontal Loop
Geothermal heat pumps transfer energy between your home, the ground, or a nearby body of water instead of the air outside. This is because the temperatures of water and ground remain relatively stable, in contrast to the fluctuating outdoor air temperature. There are four major types of geothermal heating loops and which one you choose to use depends on your property size and layout. The type of loop used and the method of installation employed determine the efficiency and effectiveness of your geothermal heating system.
Horizontal geothermal systems make use of series of horizontal pipes that are that are buried in trenches ranging from four and six feet deep. The trenches can accommodate up to three pipe circuits. The pipe circuits are connected into the manifold, which is the central control unit of the geothermal heat pumps. The manifold is a conduit for heated or chilled water into your home’s cooling or heating ductwork.
In the beginning these pipes were installed in vertical trenches that required more land area to cover the pipes. As technology improved and technology improved, it was discovered that laying a larger single pipe back and forth at different depths within smaller trenches could reduce space requirements and cost without necessarily sacrificed performance. This led to the development of the “slinky method” of installing horizontal geothermal circuits.
A vertical ground loop system is a good alternative to horizontal geothermal heat pump system in situations where there is not enough land area available. It is also a good option for homes located in urban areas where the topsoil is thin and there isn’t much space for horizontal loops. If your property is in an earthquake-prone region and cannot support an horizontal loop system, an alternative that is vertical could be the best choice.
If you have plenty of water, ponds or lakes can be an excellent alternative for your home. This kind of system operates similar to vertical or horizontal ground loop geothermal heat pump, but the water is used to heat and cooling, instead of the earth. It is crucial to note that a system that utilizes lake loops or ponds will not function in the event of an electrical power failure. A backup generator must be installed to provide an electric source during this time.
Desuperheater
Geothermal heating is an efficient alternative to conventional methods. But when switching to geothermal homeowners must consider balancing upfront costs against total energy savings. Many factors are involved, including the soil composition and climate of the area. One of the most important decisions is whether or not to put in ground loops, or use an external tank to store hot water. The latter is more affordable, but it may not provide the same level of efficiency.
A desuperheater is a piece of equipment used to transfer heat from a geothermal system into your hot water tank in your home. It is designed to work during winter, when the system’s cooling cycle produces excess heat. The desuperheater removes this waste heat and utilizes it to improve your home’s heating performance. It also reduces your energy consumption by using existing resources.
The ideal design for a desuperheater depends on several physical, thermal, and geometric variables. These include the spray temperature, the angle of injection, as well as the design of the nozzle. These are all significant aspects that affect the operation and performance of the desuperheater.
In the summer, desuperheaters can save up to 80 percent more in a heating dominated climate than the conventional hot water heater. This is because the desuperheater makes use of the energy that is emitted from the house in the cooling process and converts it to useful heat for the hot water generator. Geothermal systems can provide hot water to homes for 3 to 5 months per year, at a fraction of the cost of other energy sources.
The desuperheater is also useful in the winter, when the geothermal heating system is at its lowest capacity. The device can add the additional heat produced by the cooling system to the domestic hot water tank. This allows the domestic hot water tank to utilize the energy that is free, and also increases the heating capacity of the system. Desuperheaters are also an effective way to reduce the time that a geothermal heating system is being used when it’s in a climate with a high heating demand.