Geothermal HVAC
Geothermal is a system that can provide both cooling and heating. The temperature of the earth below the surface is fairly constant throughout the year.
A geothermal system consists of the heat pump, underground loops and a distribution network (such as air ducts). Learn more about this efficient system’s components:.
Ground Loop
The Ground Loop is the most important element to a geothermal system’s effectiveness and long-lasting. It is made up of pipes that are placed in the yard and connect to the heat pump in your home. The piping is then filled with a solution containing water that circulates to absorb or disperse heat based on the requirements of your home. The temperature of the ground stays constant four to six feet below the surface, which makes 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 heating 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 employs the opposite process to eliminate the heat surplus and return it back to the loop, where it starts the next cycle.
In a closed-loop system, the piping is filled with a solution based on water and buried underground. The solution is safe and non-toxic for the environment. It is not a pollutant to underground water supplies. The system can also make use of lakes or ponds to provide heat transfer fluid, which is more environmentally friendly.
Both closed and open systems can be horizontal or vertical according to the space you need. Vertical systems require fewer trenches than a horizontal system and is less disruptive to your landscaping. It is often used in areas where soil depths are low or where existing landscaping needs to be maintained.
Whatever the kind of ground loop system you choose, it is important to choose an experienced installer. It is essential to have an efficient and well-designed system as geothermal systems use a lot of energy. A properly installed system will ensure the long-term viability of your system and allow you to save money on electricity over the long term. It is also essential to flush the system frequently to eliminate any mineral buildup, which could hinder the flow of 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 derived from the Earth that is used to heat and cool buildings. This energy can be harnessed using underground loops which absorb thermal energy and then transfer it into your building. Vertical ground loops are the most commonly used geothermal system. This type of system is typically used in residential and commercial applications. The heat pump in this system captures the heat energy from the ground and transfers it to your home or office. In the summer, it reverses to provide cooling.
The thermal energy transferred from the ground to your building is stored in a network of buried pipes. These pipes are an essential element in any geo thermal hvac system. The pipes are made of high-density Polyethylene and circulate water as well as propylene glycol, which is food-grade antifreeze. The temperature of soil or water remains almost constant just within a few feet of the surface. The closed-loop geothermal system can be more efficient than other heating methods, like gas boilers and furnaces.
These loops can either be placed in an excavation horizontally or in boreholes drilled from 100 to 400 feet deep. Horizontal trenches are usually used for larger properties with plenty of land and vertical boreholes are ideally suited for businesses or homes that have limited space. Installing a horizontal ground loop involves digging trenches, which could require a lot of time and effort. The ground is also to be compacted in order to ensure that the loops are securely attached to the soil.
A vertical loop system is easier to install than a horizontal field. The service technician drills holes that are 4 inches in diameter and approximately 20 feet apart, then installs the piping in order to create an enclosed loop. The number of holes required will depend on the building’s size and the energy requirements.
It is crucial to maintain the loop fields to keep your geothermal system functioning at its best. This means removing any debris and conducting regular bacteriological testing.
Horizontal Loop
Geothermal heat pump transfers energy between your home, the ground or a nearby body of water instead of the air outside. The reason for this is that the temperatures of the ground and water are relatively constant, unlike outdoor air temperatures, which fluctuate. The size and layout of your property will determine which loop to use. The type of loop and the installation method used determine the efficiency and effectiveness of your geothermal heating system.
Horizontal geothermal heat pump systems use a series of pipes that are buried horizontally in trenches that range from four to six feet deep. The trenches can accommodate up to three pipe circuits. The pipe circuits are connected to a manifold which is the geothermal heat pump’s central control unit. The manifold then delivers hot and cool water to your home’s cooling and heating ductwork.
Originally, these pipes were installed in vertical trenches, which required more land area to encase the pipes. As technology advanced and technology improved, it was discovered that laying a larger single pipe back-and-forth at varying depths within smaller trenches could reduce costs and space requirements without sacrificing performance. This led to the invention 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 available. It can also be an option for homes located in urban settings, where topsoil is thin and there is little if any room for horizontal loops. A vertical loop system could be a good option for properties that are located in an earthquake-prone zone and is not able to support the horizontal loops.
If you have a lot of water available lakes or ponds can be a great alternative for your home. This kind of system is similar to a horizontal or vertical ground loop geothermal heating system however instead of using the earth to heat and cool it uses water to heat and cool. Be aware that a geothermal loop system that utilizes a lake or pond cannot function in the event of power failure. A backup generator needs to be installed to supply an electrical source during this period.
Desuperheater
Geothermal heating is a cost-effective alternative to conventional methods. When it comes time to switch homeowners must balance upfront costs and total savings on energy. There are many factors that come into play such as the local climate and soil’s makeup. One of the most important choices is whether to put in ground loops or install an external hot water tank. The latter option is less expensive, however it may not provide the same efficiency.
A desuperheater transfers heat from geothermal heating systems to your domestic hot water tank. It is designed to function during winter, when the cooling cycle of the system generates excess heat. The desuperheater removes this waste heat and uses it to boost the efficiency of your heating system. It can also cut down on your energy usage by utilizing pre-existing sources.
The ideal design of a desuperheater is dependent on a variety of physical geometric, thermal, and variables. These factors include the spray water temperature and the angle of the injection, and the shape of the nozzle. These are all elements that affect the performance and efficiency of the desuperheater.
During the summer, a desuperheater can save up to 80 percent in a heating dominated climate than the conventional hot water heater. This is due to the fact that the desuperheater utilizes the energy removed from the house in the cooling process and converts it into 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 the geothermal heating system is at its lowest capacity. The device adds the extra heat produced by the cooling system to the domestic hot water tank. This enables the domestic hot water tank to use this energy for free and maximizes the heating capacity of the system. The desuperheater is also an excellent way to cut down on the amount of time geothermal heating systems are operating when it’s in a climate with a high heating demand.