This study presents computer simulations of the volumetric, mechanical and compression efficiencies of a low-pressure scroll compressor for ammonia, with a suction volume of 192.5 cm~3. Computer calculations were made for a number of combinations of the involute base circle radius and the scroll height for a fixed cylinder diameter of 155 mm. As a result, the design dimensions of the scroll configuration leading to the optimum efficiency are presented for this particular cylinder diameter. Based on the computer simulations presented here, a high efficiency scroll compressor for ammonia is now being developed.
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