Geothermal HVAC
Geothermal is a system that provides heating and cooling. The temperatures of the earth below the surface stay fairly constant throughout the year.
Geothermal systems are made up of a heatpump, underground loops, and the distribution system. Learn more about this energy-efficient system’s components:.
Ground Loop
The Ground Loop is the key to a geothermal system’s efficiency and durability. It is made up 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 solution that circulates to absorb or disperse heat in accordance with the needs of your home. The temperature of the ground is constant between four and six feet below surface level, which makes it an ideal energy source for geothermal systems.
When the system is in heating mode, the heat transfer fluid absorbs the Earth’s heat and then transfers it to the heat pump inside your home. The fluid is then pushed back into the loop where it begins circulating again. In cooling mode, it employs the opposite process to remove the excess heat. It then returns it to the loop to begin a new cycle.
In a closed loop system the pipe is filled with a water-based solution and buried in the ground. The solution is safe and non-toxic for the environment. It does not pollute underground water sources. The system can use a pond, lake or other body of water as a source for heat transfer fluid. This is even more green.
Based on the space available Open and closed systems can be installed either vertically or horizontally. Vertical systems require less trenches than a horizontal one and reduces disturbance to your landscaping. It is often used in areas in which soil depths are low or where existing landscaping needs to be maintained.
No matter what type of ground loop system, it is crucial to select a reliable installer. Geothermal systems require substantial amounts of energy to run, and it is crucial to have an efficient and well-designed system in place. A quality installation ensures the longevity of your geothermal system and will save you money on electric bills in the long term. It is also crucial to flush the system frequently to eliminate any mineral buildup. This could hinder the flow of the heat transfer fluid and impede the efficiency of the system. A GeoDoctor expert can assist you to determine the best system for your home.
Vertical Loop
Geothermal energy is the energy from the Earth that is used to heat and cool buildings. It is a source of energy that can be harnessed by underground loops which absorb thermal energy and then transfer it into your home. Vertical ground loops are the most popular geothermal system. This kind of geothermal system is commonly used in commercial and residential settings. The heat pump in this system captures the heat energy from the ground and transfers it to your office or home. In the summer it reverses to provide cooling.
The buried pipes store the thermal energy that flows from the earth to your house. These pipes are an essential component of any geo-thermal hvac system. The pipes are made from high-density polyethylene. They circulate an emulsion of water and propylene glycol which is a food grade antifreeze through the system. The temperature of the soil or water remains relatively constant within a few feet of the surface. This enables the closed-loop geothermal heat pump to work more efficiently than other heating systems, such as gas furnaces and boilers.
The loops can be erected in a horizontal trench, or placed into boreholes that are made to a depth of 100 to 400 feet. Horizontal trenches are typically used for larger properties with a lot of available land, while vertical boreholes are ideally suited for businesses or homes with small spaces. The installation process for horizontal ground loops entails digging large trenches that take a considerable amount of time and effort. Additionally, the ground must be compacted so that the loops have a firm hold on the soil.
On the other the other hand vertical loop systems can be constructed much faster and more easily than a horizontal loop field. The technician makes holes of 4 inches in diameter, spaced about 20 feet apart. He then installs the pipe to form an enclosed circuit. The number of holes you need will depend on the size of your building and the energy requirements.
To ensure that your geothermal heating and cooling system at peak performance It is essential to properly maintain the loop fields. This involves cleaning the loop fields and performing periodic bacteriological tests.
Horizontal Loop
Geothermal heat pumps transfer energy between your home and ground or the nearby body of water, rather than being able to draw energy from the air outside. This is due to the fact that the temperatures of water and ground remain relatively stable, unlike the fluctuating outdoor temperature. There are four major types of geothermal heating loops and the one you use will depend on your property size and layout. The type of loop that is used and the installation method determine the efficiency and effectiveness of your geothermal system.
Horizontal geothermal systems employ series of horizontal pipes, which are placed in trenches that are between four and six feet deep. The trenches can accommodate up to three pipe circuits. The pipe circuits are connected to a manifold which is the central control unit. The manifold then delivers chilled and heated water to your home’s cooling and heating ductwork.
Originally the pipes were installed in vertical trenches, which required more land space to surround the pipes. As technology advanced it was realized that laying a larger single pipe back and forth at different depths within smaller trenches could reduce costs and space requirements without necessarily sacrificed performance. This led to the creation of the “slinky method” of installing horizontal geothermal circuits.
In situations where there isn’t enough land, a vertical ground loop can be an option. It is also a good alternative for homes situated in urban areas, in areas where the topsoil layer is thin, and there is not enough space for horizontal loops. If your home is in an earthquake-prone zone and is not able to support the horizontal loop, the vertical loop could be the best choice.
A geothermal pond or lake pump can be the best option for your home in the event that you have access an ample amount of water. This kind of system functions exactly like vertical or horizontal ground loop geothermal heat pump except the water is used for heating and cooling instead of the earth. It is important to keep in mind that a geothermal system that uses lake loops or ponds will not work in the event of a power outage. A backup generator should be installed to provide an electric source during this period.
Desuperheater
Geothermal heating and cooling is a very efficient alternative to traditional methods. But when switching to geothermal, homeowners must balance upfront costs against total savings on energy. There are a variety of variables that play into the equation, including the local climate and soil’s composition. One of the most important decisions is whether or not to dig ground loops or to use an external tank to store hot water. The latter option is less expensive but may not provide the same efficiency.
A desuperheater transfers heat from a geothermal heating system to your home hot water tank. It is designed to operate during winter, when the cooling cycle of the system produces heat that is not needed. The desuperheater utilizes this wasted heat to improve the heating performance of your home. It reduces your energy usage by using resources already in use.
The ideal design of a desuperheater dependent on several physical, geometric, and thermal variables. These factors include the spray water temperature and the angle of the injection, and the shape of the nozzle. These are all significant elements that impact the operation and performance of the desuperheater.
During the summer, desuperheaters can help save up to 80 percent more in a heating dominated climate than a conventional hot water heater. This is because the desuperheater uses the energy removed from the home during the cooling process and converts it into useful heat for the hot water generator. This enables the geothermal system to produce domestic hot water for 3 to 5 months of the year at less than the cost of other energy sources.
The desuperheater can also help in the winter when the geothermal system is operating at its smallest capacity. The device removes the extra heat produced by the cooling system and adds it to the domestic hot water tank. This allows the hot water tank to use this free energy and maximizes the system’s heating capacity. The desuperheater is an excellent way to cut down on the amount of time geothermal heating systems are in use when it’s in a climate that has a large demand for heating.