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Compressor refrigerators are by far the most common type; they make a noticeable noise, but are most efficient and give greatest cooling effect. Portable compressor refrigerators for recreational vehicle (RV) and camping use are expensive but effective and reliable. Refrigeration units for commercial and industrial applications can be made in ...
For example, a free-piston Stirling cooler (FPSC) can convert an electrical energy input into a practical heat pump effect, used for high-efficiency portable refrigerators and freezers. Conversely, a free-piston electrical generator could be built, converting a heat flow into mechanical energy, and then into electricity.
The maximum theoretical efficiency is equivalent to that of the Carnot cycle, but the efficiency of real engines is less than this value because of friction and other losses. [ citation needed ] Since the Stirling engine is a closed cycle, it contains a fixed mass of gas called the "working fluid", most commonly air , hydrogen or helium .
An energy-efficient refrigerator could help save you money and lower your environmental impact. Check out these tips on how to make your fridge more efficient.
Common absorption refrigerators use a refrigerant with a very low boiling point (less than −18 °C (0 °F)) just like compressor refrigerators.Compression refrigerators typically use an HCFC or HFC, while absorption refrigerators typically use ammonia or water and need at least a second fluid able to absorb the coolant, the absorbent, respectively water (for ammonia) or brine (for water).
The 208cc engine delivers 4,375 starting and 3,500 running watts to power small appliances like a blender or mini fridge. More importantly, the generator can run a 15,000-BTU RV air conditioner so ...
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