is defined as…..the process of reclaiming the heat generated within a building to directly satisfy the heating needs of the building, without additional energy input.
The CGC Group BULLDOG Heat Pump System conserves heat within the fluid loop instead of rejecting it to the atmosphere through a fluid cooler. This FreeHeat™ can then be used for various building heating requirements. Even with elevated fluid temperatures (maximum 125°F), the CGC BULLDOG Heat Pumps are still able to perform mechanical cooling while maintaining high EER’s (Energy Efficiency Ratio).
An example the CGC BULLDOG design can take advantage of FreeHeat™ is for treating ventilation air. The cost to treat make up air constitutes a significant portion of the building’s total annual energy budget. Many buildings operate gas fired Make Up Air units wile simultaneously rejecting condenser heat to a fluid cooler. The energy consumed by the fluid cooler can be significant. With the CGC BULLDOG system, FreeHeat™ is used to treat the fresh air instead of wasting the heat to a fluid cooler. This eliminates the consumption of a fuel source to heat the fresh air during shoulder seasons.