发明名称 Refrigeration circuit for liquefying and supercooling a low-boiling point gas
摘要 1,114,306. Refrigerating. SULZER BROS. Ltd. 11 Aug., 1965 [5 July, 1965], No. 34356/65. Heading F4H. In a refrigeration system for supplying cold liquid refrigerant for use as the moderator in a nuclear reactor high-pressure gas from a compressor 1 is cooled in heat-exchangers 3 and 4, partially condensed in a heat-exchanger 5, condensed and super-cooled in a heat-exchanger 6 by evaporating liquid refrigerant, expanded to an intermediate pressure in throttle 7 and passed through a moderator vessel 11 while still in liquid form. The returning liquid refrigerant may, as shown, be divided into two streams one of which is expanded to a low pressure in throttle 8 and used to supercool exchanger 6 and the other of which is evaporated and superheated in exchangers 5, 4 while cooling the highpressure refrigerant, then expanded in one or more turbines 9 to the same pressure as that produced by throttle 8. The evaporated refrigerant from heat-exchanger 6 passes through heat-exchanger 5 and is combined with the gas from the turbine discharge, the combined stream being returned to the compressor 1 via heatexchangers 4, 3 and pressure vessel 14. Throttle 8 is controlled by means 13 to maintain a constant liquid level in exchanger 6 and throttle 7 is controlled by means 12 to maintain the liquid supplied to the moderator at constant pressure. Approximately 92% of the liquid refrigerant from moderator 11 is supplied to turbine 9 and 8% to throttle 8. In a modification (not shown) all of the returning refrigerant is passed to turbine 9 and the liquid refrigerant for heat-exchanger 6 is derived from the higher pressure liquid stream upstream or downstream of exchanger 6 and throttled to said low pressure. The refrigerant may be hydrogen or hydrogen deuteride. Illustrative flow rates, temperatures and pressures are given.
申请公布号 GB1114306(A) 申请公布日期 1968.05.22
申请号 GB19650034356 申请日期 1965.08.11
申请人 SULZER BROTHERS LIMITED 发明人
分类号 F25B9/00;F25J1/00;G21C15/08 主分类号 F25B9/00
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