Geothermal HVAC
Geothermal is a system that can provide both heating and cooling. The temperature of the earth below the surface remains relatively constant throughout the year.
Geothermal systems are made up of a heatpump, underground loops and an distribution system. Find out more about this energy-efficient system’s components:.
Ground Loop
The Ground Loop is the key to a geothermal system’s efficiency and longevity. It is made up of pipes that are either cut or drilled in the backyard and connected to your home’s heat pump. The pipes are then filled with a water-based solution that circulates to absorb or disperse heat in accordance with the needs 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 heating up, the liquid that transfers heat absorbs heat from the earth. It then transmits that heat to the heat pump in your home. The fluid is then moved into the loop which then starts to circulate. In cooling mode, it utilizes the reverse process to remove the heat that is not needed. It then returns to the loop to begin the next cycle.
In a closed loop system, the pipe is filled with a water-based product and placed in the ground. The solution is safe and not harmful to the environment and does not pollute the water supply in underground. The system can use a pond, lake or other body of water to provide heat transfer fluid. This is even more environmentally friendly.
Both closed and open systems can be horizontal or vertical, according to the space you need. Vertical systems require less trenches than horizontal systems and is less disruptive to your landscaping. It is ideal for areas in which soil depths are low or when existing landscaping needs to be maintained.
Regardless of the type of ground loop system, it is important to choose an experienced installer. Geothermal systems require large amounts of energy to run, and it is crucial to have a well-designed and efficient system in place. A quality installation will ensure the durability of your system and allow you to save energy costs in the long-term. It is also essential to have the system flushed frequently to eliminate any mineral buildup. This could hinder the flow of heat transfer fluid and impede 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 that comes from the Earth that is utilized to heat and cool buildings. This energy can be harnessed by underground loops which absorb thermal energy and transfer it into your home. Vertical ground loops are the most common geothermal system. This kind of system is commonly used in commercial and residential settings. The heat pump in this system absorbs the heat energy from the ground and carries it to your office or home. In the summer, it works in reverse to provide cooling.
The thermal energy that is transferred from the ground to your home is stored in a set of buried pipes. These pipes are a crucial component of any geo thermal hvac system. The tubes are made from Polyethylene with high density and circulate water as well as propylene glycol which is food-grade antifreeze. The temperature of the water or soil stays relatively constant at a few feet below the surface. The closed-loop geothermal system is more efficient than other heating methods such as gas boilers and furnaces.
These loops can be placed in a horizontal trench, or inserted into boreholes that are dug to a depth of 100 to 400 feet. Horizontal trenches are usually used for larger properties with plenty of land, while vertical boreholes are ideal for homes or businesses with little space. The installation of a horizontal ground loop involves digging trenches, which can take a considerable amount of time and effort. The ground is also to be compacted to ensure that the loops are firmly connected to the soil.
A vertical loop system is much simpler to set up than a horizontal field. The technician digging holes that are 4 inches in diameter and approximately 20 feet apart, and then installs the piping in order to create a closed loop. The number of holes required will depend on the size of your structure and the energy needs.
To ensure that your geothermal heating and cooling system running at its peak, it is important to properly maintain the loop fields. This means cleaning the loop fields and performing periodic testing for bacteriological issues.
Horizontal Loop
Geothermal heat pumps transfer energy between your home and the ground or the nearby body of water, and not being able to draw energy from the air outside. This is because temperatures in the ground and in the water remain relatively stable, unlike the fluctuating outdoor air temperature. 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 pumps make use of a set of pipes that are buried horizontally in trenches that are about four to 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 pumps heated or chilled water into your home’s cooling or heating ductwork.
In the beginning, these piping systems were installed in vertical trenches, which required a larger amount of land to surround them. As technology advanced, it was found that layering a single longer pipe back and forth various depths in trenches that were smaller could decrease the amount of space needed and also costs without the loss of performance. This is the reason for the “slinky” method of installing horizontal geothermal loops.
In cases where there isn’t enough land, a vertical ground loop system can be an ideal alternative. It’s also a great option for homes located in urban areas where the topsoil is a bit thin and there isn’t much space for horizontal loops. Vertical loops can also be the best solution for properties that are located in an earthquake-prone region and is not able to support a horizontal system.
If you have plenty of water, ponds or lakes can be a great alternative for your home. This kind of system operates the same as a vertical or horizontal ground loop geothermal heat pump but the water is used to heat and cooling, instead of the earth. Keep in mind that the geothermal loop system that is based on 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 time.
Desuperheater
Geothermal heating and cooling is a highly efficient alternative to conventional methods. When it comes to making the switch, homeowners have to balance upfront costs with total savings on energy. 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 is more affordable, but it may not provide the same efficiency.
A desuperheater is a device that transfers heat from a geothermal heating system to your hot water tank. It is designed to function in winter when the cooling cycle of the system produces excess heat. The desuperheater removes this waste heat and utilizes it to improve the efficiency of your home’s heating. It reduces your energy usage by using pre-existing resources.
The ideal design for a desuperheater is determined by a variety of physical, thermal, and geometric variables. These factors include the spray water temperature and the angle of the injection, as well as the design of the nozzle. These are all aspects that can affect the performance and operation of the desuperheater.
In a climate that is dominated by heating, a desuperheater could save you up to 80% more than a conventional water heater during the summer. The desuperheater converts the energy removed from the house during the cooling process into heat for the hot water generator. This allows the geothermal system to produce domestic hot water for 3 to 5 months of the year at less than the cost of other energy sources.
The desuperheater also helps in the winter when a geothermal system is operating at its lowest capacity. The device takes away the extra heat produced by the cooling system and transfers it to the domestic hot water tank. This allows the hot water tank to use the energy that is free and boosts the system’s heating capacity. The desuperheater is also an excellent way to cut down on the time that geothermal heating systems are being used when it’s in a location that has a high demand for heating.