Geothermal HVAC
Geothermal is a two-in-one system that provides cooling and heating. The temperature of the earth below the surface remains relatively constant throughout the year.
A geothermal system consists of a heat pump, underground loops, and a distribution system (such as air ducts). Find out more about this energy-efficient system’s components:.
Ground Loop
The Ground Loop is the key to a geothermal system’s effectiveness and long-lasting. It is comprised of pipes that can be drilled or slit in the backyard to connect with your home’s heat pumps. The piping is filled with a water-based solution and then circulated to absorb or distribute heat depending on the needs of your home. The temperature of the ground is constant between four and six feet below the surface level, which makes it a great energy source for geothermal systems.
When the system is in heating mode in the heating mode, the heat transfer fluid absorbs the earth’s heat and then carries it to the heat pump inside your house. The fluid is then pushed into the loop, where it starts circulating again. In cooling mode, it uses the opposite method to eliminate the heat surplus. It then returns to the loop to start another cycle.
In a closed-loop system, the piping will be filled with a product based on water and then buried beneath. The solution is safe and non-toxic for the environment. It doesn’t pollute the water supply in underground. The system can be used to use a pond, lake or other body of water as a source for heat transfer fluid. This is also environmentally friendly.
Depending on the available space Open and closed systems can be set up horizontally or vertically. Vertical systems require fewer trenches and cause less disturbance to your landscaping than horizontal systems. It is commonly utilized in areas with shallow soil depths or in areas where existing landscaping needs to be maintained.
No matter what type of ground loop system, it is crucial to select an experienced installer. It is important to have an efficient and well-designed system as geothermal systems use a significant amount of energy. A well-designed installation will ensure the longevity of your geothermal system and will save you money on electricity bills in the long run. It is crucial to flush the system on a regular basis to eliminate any minerals that could reduce the flow and effectiveness of the heat transfer liquid. A GeoDoctor expert can help you select the best system for your home.
Vertical Loop
Geothermal energy is the energy derived from the Earth that is used to cool and heat buildings. This energy is harnessed by using underground loops that absorb the thermal energy and then transfer it to your building. Vertical ground loops are the most popular geothermal system. This type of system is commonly used in residential and commercial applications. The system utilizes the heat pump to transfer heat from the earth into your home or office. In summer, it reverses 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 Polyethylene with high density and circulate water and propylene glycol which is food-grade antifreeze. The temperature of the water or soil remains relatively constant for just a few feet below the surface. This enables the closed-loop geothermal heat pump to work more efficiently than other heating systems, such as gas furnaces and boilers.
These loops can be installed in a horizontal trench, or placed into boreholes that are drilled to an average depth of 100 to 400 feet. Horizontal trenches are usually utilized for larger properties that have plenty of land, while vertical boreholes are ideal for businesses or homes that have limited space. Installation of a horizontal ground-loop involves digging trenches, which could require a lot of time and effort. In addition the ground has to be compacted to ensure that the loops are able to hold a solid hold on the soil.
On the other side, a vertical loop system can be constructed much faster and more easily than a horizontal loop field. The service technician digs holes that are 4 inches in diameter and 20 feet apart, and installs the piping to create an enclosed loop. The number of holes needed will be determined by your building’s size and the energy requirements.
To keep your geothermal cooling and heating system at peak performance it is crucial to maintain the loop fields. This involves cleaning the loop fields and performing periodic tests for bacteriology.
Horizontal Loop
Geothermal heat pumps transfer energy between your home and ground or the nearby body of water, and not from the outdoor air. The reason for this is that the temperatures of the ground and water is relatively constant, unlike outdoor air temperatures, which fluctuate. 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 and the method of installation used determine the efficiency and effectiveness of your geothermal heating system.
Horizontal geothermal systems use a series of horizontal pipes that are placed in trenches that are between four and six feet in depth. The trenches can house up to three pipe circuits. The pipe circuits are connected into a manifold which is the central control unit for the geothermal heat pumps. The manifold is a conduit for heated or chilled water into your home’s heating or cooling ductwork.
Initially the pipes were buried in vertical trenches that required more land area to cover the pipes. As technology improved it was realized that layering a longer single pipe back and forth at different depths within smaller trenches could reduce the space required and cost, without sacrificed performance. This led to the creation of the “slinky method” of installing horizontal geothermal circuits.
A vertical ground loop system can be a great alternative to horizontal geothermal heat pump system in cases where there isn’t enough land space available. It’s also a great alternative for homes in urban areas, where the topsoil is thin, and there is not much space for horizontal loops. If your property is located in an earthquake-prone zone and is not able to support the horizontal loop, a vertical loop system could be the best choice.
If you have plenty of water available lakes or ponds can be the ideal alternative for your home. This kind of system operates exactly like vertical or horizontal ground loop geothermal heat pump, however, the water is used to heat and cooling, instead of the earth. It’s important to remember that a geothermal system using lake loops or ponds will not work in the event of a power failure. Installing a backup generator can provide electricity during this period.
Desuperheater
Geothermal heating is an efficient alternative to conventional methods. However, when switching to geothermal homeowners must weigh upfront costs against total energy savings. There are many aspects to consider such as the local climate and soil’s makeup. One of the most important choices is whether or not to dig ground loops, or use an external tank to store hot water. The latter is less expensive, but it might not offer as much efficiency.
A desuperheater transfers heat from geothermal heating systems to your hot water tank. It is designed to function in the winter months when the cooling process of the system generates excessive heat. The desuperheater utilizes this wasted heat to improve the heating performance of your home. It also reduces the energy use by utilizing existing resources.
The optimum design for desuperheaters is determined by several physical, thermal, and geometric variables. These factors include the spray temperature as well as the angle of injection, and the shape of the nozzle. These are all important factors that affect the performance and operation of the desuperheater.
In a climate dominated by heating, a desuperheater can save you as much as 80% more than an ordinary water heater during the summer. The desuperheater converts the energy that is removed from the home during the cooling process into heat for the hot water generator. This enables the geothermal system to make domestic hot water for three months of the year, at a fraction of the cost of other energy sources.
The desuperheater can also be useful in the winter, when the geothermal heating system is operating 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 this energy for free and maximizes the heating capacity of the system. The desuperheater is a great way to reduce the amount of time that geothermal heating systems are in use when it’s in a place with a high heating demand.