Geothermal HVAC
Contrary to traditional HVAC systems that run on fuel oil, natural gas propane or electricity geothermal can provide two-in-one cooling and heating. The temperature of the earth below the surface is fairly constant throughout the year.
Geothermal systems consist up of a heatpump, underground loops, and an distribution system. Find out more about the various parts that make up this energy-efficient system:.
Ground Loop
The Ground Loop is the main element to a geothermal system’s efficiency and long-lasting. It is made up of pipes that are trenched or drilled in the yard and connect 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 needs of your home. The temperature of the ground is constant between four and six feet below the surface level, which makes it an ideal energy source for geothermal systems.
When the system is in heating mode the heat transfer fluid absorbs the Earth’s heat and then transfers it to the heat pump inside your house. The fluid is then pushed back to the loop where it begins the process of circulating. In cooling mode, it utilizes the opposite method to eliminate the excess heat. It returns it to the loop to start the next 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 doesn’t pollute underground water sources. The system can use a pond, lake or any other body of water as a source of heat transfer fluid. This is also eco-friendly.
Open and closed 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 ideal for areas where soil depths are low or when existing landscaping needs to be maintained.
It is crucial to choose a reliable installer regardless of the type of system. It is essential to have an efficient and well-designed system, since geothermal systems use a significant amount of energy. A properly installed system will ensure the durability of your system, and will help you save money on electricity in the long run. It is also crucial to have the system flushed regularly to remove any mineral buildup that can reduce the flow of the heat transfer fluid and impede the efficiency of the system. GeoDoctor experts can assist you to determine the right system for your house.
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 thermal energy and transfer it to the building. The most commonly used type of geothermal system is known as a vertical ground loop. This type of system is typically used in residential and commercial applications. The system utilizes a heat pump to transfer thermal energy from the earth into your home or office. In summer, it reverses to provide cooling.
The thermal energy that is transferred from the ground to your building is stored in a series of buried pipes. These pipes are an essential part of any geo-thermal HVAC system. The pipes are made of high-density polyethylene. They move a mixture of water and propylene glycol, which is a food-grade antifreeze, through the system. The temperature of the soil or water remains almost constant just only a few feet below the surface. This enables the closed-loop geothermal heat pump to be more efficient than other heating systems, such as gas furnaces and boilers.
The loops can be placed in a trench horizontally or inserted into boreholes that are drilled from 100 to 400 feet deep. Horizontal trenches are generally utilized for larger properties that have lots of land available, while vertical boreholes are ideal for homes or businesses that have little space. Installation of a horizontal ground-loop involves digging trenches, which could take a considerable amount of time and effort. The ground must be compacted to ensure that the loops remain attached to the soil.
On the other side vertical loop systems can be installed much faster and more easily than a horizontal loop field. The technician makes holes that are 4 inches in diameter, spaced about 20 feet apart. He then connects the pipe to create an enclosed circuit. The number of holes required will depend on the size of your structure and the energy demands.
To keep your geothermal heating and cooling system at peak performance, it is important to maintain the loop fields. This includes removing debris and conducting regular tests for bacteriological health.
Horizontal Loop
Geothermal heat pumps transfer energy between your home, the ground or a nearby body of water instead of the air outside. This is due to the fact that the temperatures of water and ground remain relatively stable, unlike the fluctuating temperature of outdoor air. There are four main types of geothermal heating loops and the one your system uses depends on the size of your property and layout. The type of loop that is used and the method used to install it determine the effectiveness and efficiency of your geothermal system.
Horizontal geothermal systems employ series of horizontal pipes, which are that are buried in trenches ranging from four and six feet deep. The trenches are designed to accommodate two to three pipe circuits. The pipe circuits are connected to a manifold, which is the central control unit. The manifold is then able to send chilled and heated water to your home’s cooling and heating ductwork.
Initially, these pipes were installed in vertical trenches that required more land area to cover the pipes. As technology developed and technology improved, it was discovered that layering a longer single pipe back and forth at different depths within shorter trenches reduced the space required and cost, without necessarily sacrificing performance. This was the beginning of the “slinky” method of installing horizontal geothermal loops.
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 situated in urban areas, in which the topsoil is scarce and there is little if any room for horizontal loops. If your property is located in an earthquake-prone area and is unable to support the horizontal loop, an alternative that is vertical could be the best choice.
A geothermal pond or lake pump system can be the ideal option for your home if you have access to an abundance of water. This type of system is similar to a horizontal or a vertical ground loop geothermal heating pump however, instead of using the earth for heating and cooling the water is used. It is important to keep in mind that a geothermal system using a pond or lake loop will not work in the event of a power outage. A backup generator should be installed to provide an electric source during this time.
Desuperheater
Geothermal cooling and heating is a highly efficient alternative to conventional methods. However, when switching to geothermal homeowners must consider balancing upfront costs against total energy savings. There are many factors to consider such as the soil’s composition and climate of the area. One of the most important choices is whether to put in ground loops or build an external hot water tank. The latter option is less expensive, but may not provide the same level of efficiency.
A desuperheater can be described as a piece of equipment used to transfer heat from a geothermal system into your domestic hot water tank. It is designed to function in the winter months when the cooling process of the system generates excess heat. The desuperheater takes this wasted heat and utilizes it to improve your home’s heating performance. It reduces your energy usage by using resources already in use.
The optimal design of desuperheaters is determined by several 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 important aspects that affect the operation and performance of the desuperheater.
In the summer months, desuperheaters can save up to 80 percent more in a heating dominated climate than a conventional hot water heater. This is because the desuperheater makes use of the energy removed from the house in the cooling process and converts it to useful heat for the hot water generator. Geothermal systems can supply domestic hot water for 3 to 5 months of the year for a fraction of the cost of alternative energy sources.
The desuperheater is also useful in winter, when the geothermal heating system is operating at its lowest capacity. The device removes the extra heat produced by the cooling system and then adds it to the domestic hot water tank. This allows the domestic hot water tank to use the energy that is free, and also increases the heating capacity of the system. The desuperheater is also an effective way to reduce the amount of time geothermal heating systems are operating when it’s in a location that has a large demand for heating.