klimatisierungsmethode and device with use of a kryogens

摘要

Methods and apparatus for controlling a conditioned space (14) to a predetermined set point temperature (58), utilizing a supply (16) of cryogen. Cryogen is drawn from the supply in a flow path (42;202) to provide a cooling mode via a heat exchanger (46;156) disposed in the flow path. A vapor motor (78) in the flow path, downstream from the heat exchanger, drives a fan (76) which moves air between the conditioned space and the heat exchanger. Heat (90) is applied to the cryogen downstream from the heat exchanger, after all cooling modes have been performed, to provide the desired fan horsepower, without interfering with a cooling cycle. A by-pass flow path (124,186) selectively directs cryogen directly to the vapor motor, by-passing the heat exchanger, to provide air circulation in the conditioned space when the temperature of the conditioned space is satisfied. IMAGE