Geothermal HVAC
Geothermal is a system that provides heating and cooling. The temperatures of the earth below the surface remain relatively consistent year-round.
A geothermal system consists of the heat pump, underground loops, and a distribution system (such as air ducts). Learn more about the various components that make up this energy-efficient system.
Ground Loop
The Ground Loop is the most important element to a geothermal system’s effectiveness and durability. It is comprised of pipes that are cut or drilled in the yard and connect to your home’s heat pump. The piping is then filled with a water-based fluid that circulates to absorb or disperse heat according to the needs of your home. The ground’s temperature is relatively constant four to six feet below the surface, making it an ideal energy source for geothermal systems.
When the system is heating, the liquid used to transfer heat absorbs heat from the earth. It then carries that heat to the heating pump in your home. The fluid is then pushed back to the loop where it begins to circulate again. In cooling mode, it utilizes the opposite method to eliminate the excess heat. It then returns it to the loop to begin another cycle.
In a closed-loop system the piping will be filled with a product based on water and buried underground. The solution is safe for the environment. It is not a pollutant to the water supply in underground. The system can also utilize a pond or lake as a source of heat transfer fluid, which is even more eco-friendly.
Both closed and open systems can be horizontal or vertical, depending on the space you require. Vertical systems require less 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.
It is crucial to choose a reliable installer regardless of the type of system. Geothermal systems require substantial amounts of energy to operate and it is essential to have an efficient and well-designed system in place. A properly installed system will ensure the longevity of your system and help you save money on electricity in the long run. It is also essential to have the system flushed frequently to eliminate any mineral buildup. This can reduce the flow of heat transfer fluid and hinder 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. The energy is harnessed using a series of underground loops that absorb the thermal energy and then transfer it to the building. The most popular type of geothermal system is known as a vertical ground loop. This kind of system is commonly utilized in commercial and residential applications. The system utilizes an energy pump to transfer heat from the earth to your office or home. In the summer, it reverses to provide cooling.
The pipes that are buried store the thermal energy that transfers from the earth to your home. These pipes are a key component of any geo thermal hvac system. The pipes are made of high-density Polyethylene and circulate water and propylene glycol which is food-grade antifreeze. The temperature of soil or water remains almost constant just a few feet beneath the surface. This enables the closed-loop geothermal heat pump to be more efficient than other heating systems, like gas furnaces and boilers.
Loops can be installed in the horizontal direction of a trench or placed in boreholes that are drilled from to 400 feet deep. Horizontal trenches are typically utilized for larger properties that have lots of land available, while vertical boreholes are ideal for homes or businesses that have small spaces. The installation process for horizontal ground loops involves digging large trenches that take a lot of time and effort. In addition the ground needs to be compacted to ensure the loops have a firm grip on the soil.
A vertical loop system is much easier to install than a horizontal field. The technician makes holes that are 4 inches in diameter spaced 20 feet apart. Then, he installs the pipe to form a closed circuit. The number of holes needed will depend on the building’s size and energy requirements.
To keep your geothermal heating and cooling system running at its peak it is crucial to maintain the loop fields. This means cleaning the loop fields and conducting periodic testing for bacteriological issues.
Horizontal Loop
Geothermal heat pumps transfer energy between your home, the ground, or a nearby body of water instead of the air outside. The reason is that the temperature of the ground and water are relatively constant, unlike outdoor air temperatures, which fluctuate. There are four main types of geothermal heating loops and which one you choose to use depends on the size of your property as well as its layout. The type of loop you choose and the method of installation employed determine the effectiveness and efficiency of your geothermal heating system.
Horizontal geothermal systems make use of series of horizontal pipes that are placed in trenches that are between four and six feet in depth. The trenches are constructed to accommodate two to three pipe circuits. The pipe circuits are connected to a manifold which is the central control unit. The manifold then sends heated and cooled water to your home’s heating and cooling ductwork.
Originally, these pipes were installed in vertical trenches, which required more land area to encase the pipes. As technology advanced, it was found that layering a single longer pipe back and forth different depths in smaller trenches could reduce the amount of space needed and also costs without sacrificing performance. This was the birth of the “slinky” method of constructing horizontal geothermal loops.
A vertical ground loop system is an excellent alternative to a horizontal geothermal heating system in situations where there is not enough land area available. It’s also a great option for homes located in urban areas where the topsoil is a bit thin, and there is not much space for horizontal loops. If your property is located in an earthquake-prone region and is not able to support a horizontal loop system, a vertical loop system could be the best choice.
A pond or lake geothermal heat pump system can be the ideal option for your home in the event that you have access plenty of water. This type of system is similar to a horizontal or vertical ground loop geothermal heating system however, instead of using earth for heating and cooling the water is used. Keep in mind that a geothermal loop system that utilizes a lake or pond cannot function in the event of power failure. A backup generator should be installed to supply a source of electricity during this time.
Desuperheater
Geothermal heating is a cost-effective alternative to conventional methods. But when it comes to switching to geothermal homeowners must weigh upfront costs against the total savings on energy. 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 install an external tank to store hot water. The latter is less expensive, but may not offer the same efficiency.
A desuperheater is a piece of equipment used to transfer heat from a geothermal system into your domestic hot water tank. It is designed to function in winter when the cooling cycle of the system generates excessive heat. The desuperheater utilizes this heat to boost the heating efficiency of your home. It can also cut down on your energy usage by using existing sources.
The optimum design for a desuperheater depends on several physical, geometric, and thermal variables. These variables include the spray temperature and the angle of the injection, as well as the design of the nozzle. These are all important aspects that affect the performance and operation of the desuperheater.
In a climate that is dominated by heating, a desuperheater will save you up to 20% more than a conventional water heater during the summer. This is due to the fact that the desuperheater utilizes the energy emitted by the house during the cooling process and converts it to useful heat for the hot water generator. The geothermal system can provide hot water to homes for 3 to 5 months of the year for a fraction of the cost of alternative energy sources.
The desuperheater is also useful during winter, when a geothermal heating system is operating at its lowest capacity. The device can add the additional heat generated by the cooling system to the domestic hot-water tank. This allows the hot water tank to use this free energy and maximizes the heating capacity of the system. The desuperheater is also a great way to reduce the amount of time a geothermal heating system is being used when it’s in a climate that has a high demand for heating.