The system uses air as the refrigerant to provide heating and cooling from an integrated packaged unit. The completed unit will be on display during the workshop and will heat and cool the conference suite used during the workshop.
Air is by nature the safest and cheapest refrigerant.
Environmental concerns about ozone depletion, global warming and increasingly stringent legislation have renewed interest in alternative refrigeration technologies. The use of air as a refrigerant is based on the principal that when a gas expands isentropically it gets cold, and when it is compressed it gets hot. Air can be compressed and expanded in a continuous cycle to provide simultaneous heating and cooling. Many modern buildings require heating and cooling systems to provide air conditioning, space heating and hot water services. In some buildings, for example, hotels and hospitals, these heating and cooling requirements coincide for much of the time.