| 摘要 |
PCT No. PCT/US93/02214 Sec. 371 Date Aug. 29, 1994 Sec. 102(e) Date Aug. 29, 1994 PCT Filed Mar. 1, 1993 PCT Pub. No. WO93/18359 PCT Pub. Date Sep. 16, 1993.A general system for heat upgrading by absorption and a system for conducting multiple pressure zone evaporation-absorption operations are introduced. The system comprises an enclosure, two sets of vertical heat conductive walls, designated as A-walls and B-walls, each wall having a first surface and a second surface that are respectively designated as A-1 and A-2 surfaces and B-1 and B-2 surfaces, and four processing zones, respectively designated as A-1, A-2, A-3 and A-4 zones. Zone A-1 and Zone A-2 are inside of the enclosure and are respectively in contact with A-1 and B-1 surfaces; Zone A-3 and Zone A-4 are outside of the enclosure and are respectively in contact with A-2 and B-2 surfaces. In operation, heat is taken from a first mass of fluid in Zone A-3 to vaporize water from a falling water film in Zone A-1 to form a first water vapor. The first vapor is absorbed into a falling film of an absorbing solution in Zone A-2 and releases heat of absorption to a second mass of fluid in Zone A-4. A multiple pressure zone (MPZ) system and operation are also introduced. An MPZ operation has important advantages over a single pressure zone operation. |
