Geothermal HVAC
Geothermal is a system that can provide both heating and cooling. The temperatures of the earth below the surface stay fairly constant throughout the year.
Geothermal systems are made of a heatpump, underground loops, and the distribution system. Find out more about this energy-efficient system’s components:.
Ground Loop
The Ground Loop is vital to the effectiveness and longevity of geothermal cooling and heating system. It consists of pipes that are either placed in the backyard and connected to your home’s heat pump. The piping is filled with a water-based solution and circulated to absorb or distribute heat depending on the requirements of your home. The temperature of the ground is constant between four and six feet below the surface level, making it a great energy source for geothermal systems.
When the system is in heating mode the heat transfer fluid absorbs heat from the earth and then transfers it to the heat pump in your home. The fluid is then moved into the loop which is then able to circulate again. In cooling mode, it uses the opposite method to eliminate the heat that is not needed. It returns it back to the loop in order to begin a new cycle.
In a closed-loop system the piping is filled with a solution made of water, and then buried underground. The solution is non-toxic and safe for the environment. It doesn’t pollute the water supply in underground. The system can also use the pond or lake as a source of heat transfer fluid, which is even more sustainable.
Depending on the space available, closed and open systems can be installed either vertically or horizontally. Vertical systems require fewer trenches and cause less disturbance to your landscaping than horizontal systems. It is ideal for areas where soil depths are shallow or where existing landscaping needs to be preserved.
Whatever the kind of ground loop system, it is essential to select a reliable installer. Geothermal systems require substantial amounts of energy to operate and it is essential to have a well-designed and efficient system in place. A well-designed installation will ensure the longevity of your geothermal system, and will save you money on electricity bills in the long term. It is also crucial to have the system flushed regularly to remove any mineral buildup. This could hinder the flow of heat transfer fluid and impede the efficiency of the system. GeoDoctor experts can assist you to select the right system for your house.
Vertical Loop
Geothermal energy is derived from the Earth and is used to heat or cool buildings. This energy can be harnessed through underground loops that absorb thermal energy and then transfer it into your building. The most commonly used type of geothermal system is called a vertical ground loop. This kind of geothermal system is used most often in residential and commercial applications. The heat pump in this system absorbs the heat energy from the ground and then transfers it to your office or home. In summer, it reverses to provide cooling.
The thermal energy transferred from the ground to your building is stored in a series of underground pipes. These pipes are a crucial component of any geo thermal hvac system. The pipes are made of high-density polyethylene. They move the mixture of propylene glycol and water which is a food grade antifreeze through the system. The temperature of soil or water remains relatively constant 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 inserted into an excavation horizontally or into boreholes that are drilled from 100 to 400 feet deep. Horizontal trenches are usually used for larger homes with plenty of land and vertical boreholes are ideally suited for homes or businesses with little space. The installation process for a horizontal ground loop involves digging a long trench that may take a considerable amount of time and effort. Additionally the ground has to be compacted so that the loops have a firm grip on the soil.
A vertical loop system is much more straightforward to install than a horizontal field. The service technician digs holes that are 4 inches in diameter and approximately 20 feet apart, and then installs the piping in order to create an enclosed loop. The number of holes needed will depend on the dimensions of your building as well as the energy requirements.
To ensure that your geothermal cooling and heating system at peak performance, it is important to maintain the loop fields. This means cleaning the loop fields as well as performing periodic tests for bacteriology.
Horizontal Loop
Geothermal heat pump transfers 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, in contrast to the fluctuating outdoor air temperature. The size and layout of your property will determine the type of loop you employ. The type of loop used and the method used to install it determine the effectiveness and efficiency of your geothermal system.
Horizontal geothermal heat pump systems make use of a set of pipes that are buried horizontally in trenches that range from four to six feet deep. The trenches can hold up to three pipe circuits. The pipe circuits are connected into an amanifold that is the central control unit of the geothermal heat pumps. The manifold sends heated or cooled water into your home’s cooling or heating ductwork.
Originally, these piping system were installed in vertical trenches which required a larger expanse of land to encase them. As technology developed it was realized that layering a single pipe back-and-forth at varying depths within smaller trenches could reduce space requirements and cost without necessarily sacrificed performance. This led to the invention of the “slinky method” of installing horizontal geothermal circuits.
In situations where there isn’t enough land, a vertical ground loop can be an option. It’s also a good alternative for homes 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 area and cannot support a horizontal loop system, a vertical loop system may be the best option.
A pond or lake geothermal heat pump is the ideal option 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 system, but instead of using earth to heat and cool it uses water to heat and cool. It’s important to remember that a geothermal system using a pond or lake loop will not function in the event of a power failure. A backup generator should be installed to provide an electric source during this period.
Desuperheater
Geothermal cooling and heating is a very efficient alternative to traditional methods. When it comes to making the switch, homeowners have to balance upfront costs with total energy savings. Many factors are involved, including the soil composition and the local climate. One of the most important choices is whether to plant ground loops or use an external hot water tank. The latter option is less expensive, but may not provide the same efficiency.
A desuperheater is a device that transfers heat from geothermal heating systems to your hot water tank. It is designed to work in winter, when the system’s cooling cycle generates excess heat. The desuperheater utilizes this wasted heat to improve the efficiency of heating in your home. It reduces your energy usage by using resources already in use.
The optimal design of a desuperheater is determined by a variety of physical, geometric, and thermal factors. These variables include the angle of injection, the temperature of the spray water, and the nozzle design. These are all aspects that influence the performance and operation of the desuperheater.
In a climate that is dominated by heating, a desuperheater will save you up to 80% more than a traditional water heater in the summer. The desuperheater converts the energy removed from the house through cooling into heat for the hot-water generator. Geothermal systems can provide 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 useful in the winter, when a 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 hot water tank to make use of this free energy and maximizes the system’s heating capacity. The desuperheater could be used to reduce the time that the geothermal system is in operation in a heating dominated climate.