FIELD: heating.
SUBSTANCE: invention proposes to use an external heat exchanger to transfer heat from lubricant material of a compressor (c) of expanded working fluid, as a result of which lubricant material is cooled. The heat exchanger may also be used for supercooling of condensed working fluid with the help of the same flow of expanded working fluid. A horizontal compressor of volute type comprises an intermediate settling tank for lubricant material, arranged between the main support element and the volute. A counterbalance on a crankshaft may move through lubricant material in the intermediate settling tank to spray lubricant material around. The horizontal compressor of volute type may have multiple lathed surfaces, which are used for precise alignment and matching of compressor components.
EFFECT: increased efficiency.
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