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Heat Pumps and Chillers
Tandem Chillers Inc. manufactures heat pumps for water source, air source and ground source cooling and heating. Since designing our first modular chiller over five years ago, we've brought our vast knowledge gained over 40 years of process chiller design to the design of heat pumps for alternative sources of cooling. Our heat pumps are of sound refrigeration design and easily serviced. Best of all, our heat pumps are designed in such a way that they can be removed for service without shutting down the rest of the system. Today we have the widest selection of heat pumps, chillers and freons available and it is expanding each year.
What are Heat Pumps?
Like a chller, a heat pump is a mechanical device that transfers heat from one place to another. Most heat pumps generate cooling. They transfer heat from a low temperature heat source to a higher temperature heat sink, i.e., refrigerators, freezers, and air conditioners. Heat pumps can also operate in reverse, i.e., generating heat by transferring heat from a high temperature heat source to a lower temperature heat sink.
How Heat Pumps Work
Heat pumps are very much like a typical engine operating in reverse. A standard type of heat pump works by using g the physical properties of an evaporating and condensing fluid known as a freon or refrigerant. In heating and cooling applications, a heat pump is much like a refrigeration device that uses a reversing valve and heat exchanger to reverse the direction of the heat.
Three Kinds of Heat Pumps
There are three types of heat pumps: those that draw heat from the 1) air, from 2) water or the 3) the ground.
1.Air Source Heat Pumps
Air source heat pumps capture both heat and cooling from the air (outside or inside) and are relatively easy and inexpensive to install and have therefore historically been the most widely used type of heat pump. However, they suffer limitations due to their use of the outside air as a heat source or sink. Learn more about air source heat pumps.
2. Water Source Heat Pumps
Water source heat pumps draw heat from water including nearby streams and other natural water bodies from lakes to rivers. Learn more about water source heat pumps.
3. Ground Source Heat Pumps
Ground source heat pumps, which are also confusingly referred to as geothermal heat pumps, typically have higher efficiencies than air source heat pumps. This is because they draw heat from the ground or groundwater which is at a relatively constant temperature all year round below a depth of about eight feet or 2.5 meters. This means that the temperature differential is lower, leading to higher efficiency. The tradeoff for this improved performance is that ground source heat pump are more expensive to install due to the need for the digging of wells or trenches in which to place the pipes that carry the heat exchange fluid. When compared groundwater heat pumps are generally more efficient than heat pumps using heat from the soil. Learn more about ground source heat pumps.
In the interest of continuous improvement, Tandem Chillers reserves the right to change specifications without notice. While every effort is made to ensure accuracy, Tandem Chillers accepts no responsibility or liability resulting from the use of this information. Jan 2009
Contact us today: Tel: 1.877.513.8330 Email: sales@tandemchillers.com
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