Heat exchangers are used to heat and cool buildings that aim to reduce the amount of non-renewable fuels used in air conditioning a home. When building an environmentally friendly, or green home, heat exchangers are installed to use the heat occurring naturally in the ground, ponds or lakes to make a home comfortable to live in. The use of a heat exchanger in a geothermal heat pump system is more energy efficient than fossil fuel powered heat and air systems.
A heat exchanger is an important part of any green home being built; by creating a ground source heating and cooling system a green home can be freed from being tied to the use of electricity or gas supplies. Ground source heat exchangers are important in moving heat into or out of a home in a more efficient way than fossil fuel furnaces are capable of. During Summer months the heat removed from a green home can be used to heat water passing through the heat pump and heat exchanger to provide free hot water.
The process used in heat exchange units is similar to that used in refrigerators; a heat exchanger can help drag heat into a building for warmth and out of it when the building becomes too warm. Geothermal heating and cooling units are usually made up of pipes filled with water buried underground at a level that is not affected by winter frosts and cold weather. Plastic pipes are either filled with water, or use a water source such as a lake or pond to create a loop for moving heat around the system. To provide heat in Winter months, the water in the pipes moves heat into the heat exchanger where it is removed and pumped through the heating system of the green home. In Summer months, the heat exchanger drags heat from inside the building and transfers to the water passing through the plastic pipes. In open loop systems the water is passed back into the water source, such as a pond or lake.
Using a heat exchanger and geothermal heating system provides greater energy efficiency that traditional heating and cooling systems. In terms of fossil fuel burning systems a heat pump and exchanger can be 48 percent more efficient than a gas powered furnace, and 75 percent more efficient than an oil furnace. The heat pump system does require a small use of electricity to power the pump; but, produces less carbon dioxide emissions passed into the atmosphere and causing pollution. The risk of carbon monoxide emissions building up in a home from burned fossil fuels is also eliminated in a heat pump and heat exchanger system.
Brazetek.com offers a wide variety of energy efficient heat exchangers.