| 摘要 |
PCT No. PCT/GB96/02486 Sec. 371 Date Apr. 14, 1998 Sec. 102(e) Date Apr. 14, 1998 PCT Filed Oct. 11, 1996 PCT Pub. No. WO97/14924 PCT Pub. Date Apr. 24, 1997A rotary heat pump 10 comprises a vapor generator 20, a condenser 24/34, an evaporator 42 and an absorber 40 interconnected to provide cyclic fluid flow paths for a volatile fluid component and an absorbent fluid therefor. To allow operation of the pump close to the crystallization boundary the pump includes crystallization control means which cause the temperature of the fluid in the region prone to crystallization to be raised when the onset of crystallization is detected. For example the pressure increase upstream of a crystallization site may cause warm fluid to be diverted directly or indirectly to increase the fluid temperature at the crystallization site. The Specification also describes features for controlling the absorbent mixture flow rate; for controlling the concentration thereof; for damping a scoop pump; for assuming flow onto the generator face; for pressure relief and extended operation of the pump; to novel heat exchangers; to metal compositions for the heat pump, and to hydrogen getters for use in heat pumps. |
