Geothermal HVAC
Contrary to traditional HVAC systems that operate on natural gas, fuel oil, propane or electricity geothermal can provide two-in-one cooling and heating. The temperatures of the earth below the surface are pretty constant all year.
A geothermal system consists of the 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 most important element to a geothermal system’s efficiency and durability. It is comprised of pipes that are either cut or drilled in the backyard, and then connected to the heat pump in your home. The piping is filled with a water-based fluid and circulated to absorb or distribute heat depending on the needs of your home. The temperature of the ground stays constant between four and six feet below the surface, which makes it a natural energy source for geothermal systems.
When the system is in heating mode, the heat transfer fluid absorbs the Earth’s heat and carries it to the heat pump in your house. The fluid is then pushed back to the loop where it begins the process of circulating. In cooling mode, the system utilizes the reverse process to remove the heat that is left and return it back to the loop, where it starts a new cycle.
In a closed-loop system, the piping will be filled with a product based on water, and then buried underground. The solution is safe and non-toxic to the environment and does not pollute the underground water supply. The system can use a pond, lake or any other body of water to provide heat transfer fluid. This is even more green.
Both closed and open systems can be horizontal or vertical, depending on the space you require. Vertical systems require fewer trenches and cause less disturbance to your landscaping than horizontal systems. It is often used in areas in which soil depths are low or where existing landscaping needs to be preserved.
It is important to select an experienced installer, regardless of the type of system. It is essential to have a reliable and well-designed system, since geothermal systems consume a lot of energy. A properly installed system will ensure the durability of your system and help you save money on electricity over the long term. It is also essential to flush the system regularly to remove any mineral buildup that can hinder the flow of the heat transfer fluid and hinder system efficiency. GeoDoctor experts can assist you to choose the best system for your home.
Vertical Loop
Geothermal energy originates from the Earth and is used to heat or cool buildings. This energy is harnessed by using underground loops that absorb thermal energy and transmit it to the building. Vertical ground loops are the most popular geothermal system. This kind of system is typically employed in commercial and residential applications. The heat pump in this system takes the thermal energy from the ground and carries it to your office or home. In the summer it reverses to provide cooling.
The pipes that are buried store thermal energy that transfers from the earth to your house. These pipes are an essential component of any geo-thermal HVAC system. The tubes are made from high-density Polyethylene and circulate water as well as propylene glycol, which is food-grade antifreeze. The temperature of the soil or water remains fairly constant, even 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.
The loops can be placed in an excavation horizontally or in boreholes drilled from 100 to 400 feet deep. Horizontal trenches are best suited for large estates with lots of land, vertical boreholes are suitable for businesses and homes with little space. The process of installing horizontal ground loops entails digging large trenches that take a considerable amount of time and effort. In addition, the ground must be compacted to ensure that the loops are able to hold a solid grip on the soil.
On the other hand, a vertical loop system can be installed much more quickly and easily than a horizontal loop field. The technician drills 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 needed will depend on the building’s size and the energy requirements.
To keep your geothermal cooling and heating system running at its peak It is essential to maintain the loop fields. This includes cleaning up debris and conducting periodic tests for bacteriological health.
Horizontal Loop
Geothermal heat pumps transfer energy between your house and the ground or nearby bodies of water, and not taking energy from the outside air. The reason for this is that the temperatures of the ground and the water is relatively constant, unlike outdoor air temperatures which fluctuate. The dimensions and layout of your property will determine which loop you use. The type of loop you choose to use and the method of installation determine the effectiveness and efficiency of your geothermal system.
Horizontal geothermal systems use a series of horizontal pipes that are buried in trenches between four and six feet deep. The trenches can accommodate up to three pipe circuits. The pipe circuits are connected into the manifold, which is the central control unit of geothermal heat pumps. The manifold sends heated or chilled water into your home’s heating or cooling ductwork.
Originally, these piping system were placed in vertical trenches that required a larger area of land to cover them. As technology improved, it was found that layering a single pipe back and forth at different depths in smaller trenches could help reduce the space required and cost without the loss of performance. This led to the creation of the “slinky method” of installing horizontal geothermal circuits.
In situations where there isn’t enough land available, a vertical loop system is an ideal alternative. It is also a good alternative for homes in urban areas where the topsoil is a bit thin, and there is not enough space for horizontal loops. If your home is in an earthquake-prone zone and is unable to support an horizontal loop system, the vertical loop may be the best option.
If you have plenty of water lakes, ponds or ponds could be an excellent option for your home. This type of system is similar to a horizontal or vertical ground loop geothermal heating system however instead of using earth to heat and cool it uses water to heat and cool. Remember that the geothermal loop system that is based on the pond or lake is not functional in the event of power outage. Installing a backup generator can supply electricity during this time.
Desuperheater
Geothermal heating is an efficient alternative to conventional methods. When it comes to making the switch homeowners must consider balancing upfront costs with total energy savings. There are a variety of factors that come into play, including the local climate and soil makeup. One of the most important choices is whether to put in ground loops or build an external hot water tank. The latter is less expensive, but may not offer the same level of efficiency.
A desuperheater is a piece of equipment used to transfer heat from a geothermal source into your hot water tank at home. It is designed to function in the winter months when the cooling process of the system generates excess heat. The desuperheater utilizes this heat to improve the heating efficiency of your home. It also reduces your energy consumption by utilizing pre-existing resources.
The optimal design of a desuperheater is determined by a variety of physical, geometric, and thermal variables. These include the temperature of the spray water, the angle of injection, and the design of the nozzle. These are all factors that can affect the performance and efficiency of the desuperheater.
During the summer months, desuperheaters can save up to 80 percent in a climate that is dominated by heating than a conventional hot water heater. The desuperheater transforms the energy removed from the house during cooling into heat for the hot-water generator. Geothermal systems can supply hot water to homes for 3 to 5 months per year, at a fraction of the cost of alternative energy sources.
The desuperheater is also able to help in winter when a geothermal system is running at its lowest capacity. The device adds the extra heat produced by the cooling system to the domestic hot-water tank. This allows the hot water tank to use this energy free of charge and increase the system’s heating capacity. The desuperheater is also a great way to reduce the amount of time that a geothermal heating system is operating when it’s in a climate that has a high demand for heating.