Geothermal HVAC
In contrast to traditional HVAC systems that operate on natural gas, fuel oil propane, electricity or fuel oil geothermal can provide two-in-one cooling and heating. The temperatures of the earth below the surface remain fairly constant throughout the year.
Geothermal systems consist up of a heatpump, underground loops and a distribution system. Find out more about the various components that make up this energy-efficient system:.
Ground Loop
The Ground Loop is essential to the efficiency and durability of geothermal heating and cooling system. It is made up of pipes that can be drilled or slit in the backyard to connect to your home’s heat pumps. The pipes will be filled with water-based solution and then circulated to absorb or distribute heat depending on the requirements of your home. The temperature of the ground is relatively constant between four and six feet below surface level, which makes it an ideal energy source for geothermal systems.
When the system is heating up, the liquid that transfers heat absorbs heat from the earth. It then transfers the heat to the heat pump in your home. The fluid is then pushed back into the loop where it begins the process of circulating. In cooling mode, the system utilizes the opposite process to eliminate the heat that is left and return it back to the loop, where it begins a new cycle.
In a closed-loop system, the piping is filled with a solution based on water, and then buried underground. The solution is safe for the environment. It doesn’t pollute underground water sources. The system can be used to use a pond, lake or other body of water as a source of heat transfer fluid. This is even more green.
Open and closed systems can be vertical or horizontal depending on the space you require. Vertical systems require less trenches than a horizontal system and reduces disturbance to your landscaping. It is commonly utilized in areas with shallow soil depths or where existing landscaping needs to be preserved.
It is essential to choose a reliable installer regardless of the kind of system. It is important to have a well-functioning and well-designed system as geothermal systems use a lot of energy. A well-designed installation will ensure the longevity of your geothermal system, and will save your money on electricity costs in the long run. It is also crucial to have the system flushed regularly to remove any mineral buildup. This could hinder the flow of the heat transfer fluid and reduce system efficiency. A GeoDoctor expert can help you select the best system for your home.
Vertical Loop
Geothermal energy is the energy from the Earth that is used to cool and heat buildings. It can be harnessed through underground loops that absorb thermal energy and transfer it to your building. The most commonly used type of geothermal system is called vertical ground loop. This kind of system is commonly used in commercial and residential settings. The heat pump in this system captures the heat energy from the ground and carries it to your office or home. In the summer, it operates in reverse to provide cooling.
The heat energy that is transferred from the ground to your house is stored in a network of buried pipes. These pipes are a crucial part of any geo-thermal HVAC system. The tubes are made from high-density Polyethylene and circulate water as well as propylene glycol, a food-grade antifreeze. The temperature of soil or water stays relatively constant within a few feet of the surface. This allows the closed-loop geothermal heat pump to be more efficient than other heating systems like gas furnaces and boilers.
The loops can be erected in a horizontal trench, or placed into boreholes that are made to the depth of 100- 400 feet. Horizontal trenches work best for large properties with lots of land vertical boreholes are suitable for homes and businesses with little space. The installation process for horizontal ground loops entails digging large trenches that take a considerable amount of time and effort. The ground must be compacted in order to ensure that the loops are securely connected to the soil.
On the other hand vertical loop systems can be constructed much faster and more easily than a horizontal loop field. The technician makes holes that are 4 inches in diameter spaced 20 feet apart. Then, he installs the pipe to form an enclosed circuit. The number of holes required will depend on the size of your structure and the energy requirements.
It is vital to keep the loop fields in good condition to keep your geothermal system functioning at its peak. This means removing any debris and conducting regular tests for bacteriological health.
Horizontal Loop
Geothermal heat pumps transfer energy between your home, the ground, or a nearby body water instead of the air outside. This is due to the fact that the temperatures of water and ground remain relatively stable, unlike the fluctuating outdoor air temperature. The dimensions and layout of your property will determine the type of loop you make use of. The type of loop used and the method of installation used determine the effectiveness and efficiency of your geothermal heating system.
Horizontal geothermal systems use a series of horizontal pipes, which are buried in trenches between four and six feet in depth. The trenches can accommodate up to three pipe circuits. The pipe circuits are connected to a manifold which is the central control unit for geothermal heat pumps. The manifold then sends hot and cool water to your home’s cooling and heating ductwork.
Initially, these piping systems were installed in vertical trenches, which required a larger amount of land to encase them. As technology advanced it was realized that layering a single pipe back and forth at different depths within shorter trenches decreased the space required and cost, without necessarily sacrificed performance. This is the reason for the “slinky” method of constructing horizontal geothermal loops.
In situations where there’s not enough land, a vertical ground loop system is an ideal alternative. It is also an option for homes situated in urban areas, in which the topsoil is scarce and there isn’t any space for horizontal loops. A vertical loop system can be a good option if your property is in an earthquake-prone area and cannot support the horizontal loops.
A geothermal pond or lake pump can be the ideal choice for your home if you have access to an ample amount of water. This kind of system is similar to a horizontal or vertical ground loop geothermal heating pump, but instead of using earth to heat and cool, the water is used. Keep in mind that a geothermal loop system that utilizes the pond or lake cannot function in the event of a power outage. Installing a backup generator will supply electricity during this time.
Desuperheater
Geothermal cooling and heating is a very efficient alternative to traditional methods. However, when switching to geothermal, homeowners must balance upfront costs against total savings on energy. Many factors are involved such as the soil’s composition and local climate. One of the most important choices is whether or not to dig ground loops, or install an external tank to store hot water. The latter is less expensive but might not offer the same level of efficiency.
A desuperheater is an equipment used to transfer heat from a geothermal system to your hot water tank in your home. It is designed to function during winter, when the cooling process of the system generates excess heat. The desuperheater eliminates this waste heat and uses it to increase your home’s heating performance. It helps reduce your energy consumption by using pre-existing resources.
The ideal design for a desuperheater depends on several physical, geometric, and thermal variables. These variables include the angle of injection, the temperature of the water spray, and the nozzle’s design. These are all significant factors that affect the operation and performance of the desuperheater.
In the summer months, desuperheaters can help save up to 80 percent in a climate with a high degree of heating than traditional hot water heaters. This is because the desuperheater uses the energy that is emitted from the house during the cooling process and converts it into useful heat for the hot water generator. This allows 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 be useful during winter, when the geothermal heating system is operating at its lowest capacity. The device eliminates the excess heat generated by the cooling system and adds it to the domestic hot water tank. This allows the domestic hot water tank to utilize this free energy, and also increases the heating capacity of the system. The desuperheater is an excellent way to cut down on the amount of time that geothermal heating systems are being used when it’s in a location that has a high demand for heating.