Application of Micro-channel Heat Exchangers to Compact Ammonia Systems

摘要

Development and application of micro-channel heat exchangers show great application potential in refrigerated systems. Micro-channel heat exchangers allow for larger heat exchange surfaces in smaller packages. Tests show that compared to a round tube, plate fin condenser, a micro-channel air cooled condenser would be 14 times lighter, and would have 20% of the volume, 25% of the charge, and 60% of the pressure drop on the air-side. Applying micro-channel technology to ammonia refrigeration systems reduces system charge. Additional benefits are gained by using scroll compressors which allow for a smaller equipment foot print and lower weight Energy savings are also realized due to lower fan horsepower required for the micro-channel condenser.