Therefore, geothermal systems deliver hot air, not hot air. If the ambient temperature is 70°F, the average temperature of the air supplied should be 90 to 95°F. The bottom line is that you'll heat your home for much less than any other automatic method. The air temperature fluctuates with the seasons, but only a few meters below the feet does the Earth's temperature remain constant.
No matter what the thermometer on the surface says, temperatures less than 10 feet underground stay at an average of 55 degrees Fahrenheit year round. This is the basis of an unalterable source of energy that can heat your home. Geothermal heating takes advantage of latent thermal energy in the Earth to provide heat without burning natural gas or electric heating. Don't worry about having to maintain a temperature of 55°F in your home when you install geothermal heating.
The system converts geothermal heat so that your home heats reliably even in the coldest climates. Now, the reason the outside temperature doesn't matter is because the loops are deep enough underground that they don't come into contact with frost. That is, it doesn't matter how cold the ground is during the winter. Anything more than five feet deep on Earth maintains a temperature of 45 to 50 degrees Fahrenheit.
. In summer, if you use it for cooling, it's still cold enough underground to efficiently cool your home. Heating your home with a geothermal system in winter may seem far-fetched to you. Cold weather freezes the ground, raising the question of how much heat can actually be transferred from the ground to your home.
The answer is quite a lot. Low outdoor temperatures and frozen ground have no impact on a geothermal system. Just a few meters below the surface, the Earth maintains an almost constant temperature of approximately 55 degrees Fahrenheit. This temperature is more than enough for a geothermal heat pump to transfer heat from the subsurface and keep your home comfortable.
Geothermal heat pumps extract heat from the subsurface. Groundwater temperatures remain stable between 45 and 55 degrees throughout the year, no matter how cold the temperature above ground is. There is enough energy underground to provide heating for your home all season long. While many parts of the country experience extreme seasonal temperatures, from scorching heat in summer to freezing cold in winter a few meters below the Earth's surface, the ground remains at a relatively constant temperature.
Depending on the latitude, ground temperatures range from 45° F (7° C) to 75° F (21° C). Like a cave, this ground temperature is warmer than the air that covers it during the winter and cooler than the air in summer. GHP takes advantage of these more favorable temperatures to be highly efficient at exchanging heat with the earth through a terrestrial heat exchanger. This antifreeze is necessary because circuit fluid normally reaches a low inlet temperature of 28°F to 32°F (-2°C to 0°C) and the coolant temperatures inside the heat pump heat exchanger can be as low as 20°F (11°C) cooler.
You should also know that the installation of the heat pump by a non-certified installer invalidates most heat pump warranties. The slight variations in interior temperature experienced when an oven waits for the thermostat to activate the heat are absent in geothermal energy. One myth is that geothermal heating systems simply aren't enough to keep homes warm when outdoor temperatures are extremely low. Dual-source heat pumps have higher efficiency rates than air source units, but they are not as efficient as geothermal units.
After supplying thermal energy to the home, the coolant flows outside under reduced pressure so that it can re-accumulate heat underground. We would like to dispel this myth and assure you that a geothermal heating system will certainly keep you warm this winter. Most closed-loop geothermal heat pumps circulate an antifreeze solution through a closed circuit, usually made of high-density plastic tubing, that is buried in the ground or submerged in water. To determine the size of the heat pump you'll need, you'll need to perform an analysis of the heat load in your home.
Heat pumps should work around the clock on cold days, since they must be very close to 100% of the heat load of the coldest day or slightly less. Depending on the location and size of your home, geothermal operating costs could be 20 to 70% lower than those of conventional heating and cooling technology. .