| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a screw compressor capable of obtaining energy saving effects higher than ever before while preventing the generation of condensed water. Ž<P>SOLUTION: The oil-cooled screw compressor includes: a hygrometer (an absolute hygrometer 5) for measuring the absolute humidity of air A near a suction inlet 2a; a pressure gauge 9 for measuring discharge pressure of compressed air near a discharge port 2b; and an operation unit (calculator 14d) for calculating the dew point temperature of compressed air Ap based on the absolute humidity of the air A measured by the hygrometer 9 and the discharge pressure of the compressed air measured by the pressure gauge 9. A cooling oil supply means includes a cooling oil circulation means (a discharge port pipe 6, a separator 7, a cooling liquid pipe 10, a cooling unit 14, and a cooling liquid supply pipe 2j) for recovering cooling oil L heated by direct heat exchange with the compressed air Ap, cooling the recovered cooling oil L by indirect heat exchange using a water cooling system to a temperature in which the compressed air Ap cooled by the cooling oil L becomes the dew point temperature or higher, and circulating and supplying the cooling oil L to a gas compression space C1 in a compressor body 2. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
|
