Refrigeration TechnologyRefrigeration Technology0023-124X2782-4241Eco-Vector10543510.17816/RF105435Research ArticleLiquid chillers (chillers) with semi-hermetic ammonia compressors Grasso International1504200190439392603202226032022Copyright © 2022, Board E.2022<p>On the basis of reciprocating semi-hermetic ammonia compressors manufactured by Grasso (a plant in Halle, Germany), a family of refrigerating machines for cooling liquids (chillers with a wide performance range: from 115 to 1549 kW) was created. Joint research by specialists from Grasso and Sins made it possible to develop a special electric motor resistant to ammonia, high humidity and refrigeration oils, suitable for use in Grasso semi-hermetic mechanical compressors of a unique design.</p>refrigeration machinesheat exchangerschillersхолодильные машинытеплообменникичиллеры