| 摘要 |
Molecular seive zeolite to obtain useful energy from low-grade heat sources such as solar energy. Molecular sieve zeolite and a low pressure polar gaseous fluid adapted to be adsorbed by zeolite in a closed container are in a circuit which includes gas condensing and expansion apparatus. In one embodiment, cooled gas is received in another zeolite filled container, upon cooling of the first container, is returned via condensing and expansion apparatus providing more cooling. In another embodiment, sintered zeolite forms a divider across a container; heating one side creates a temperature gradient across the divider which functions as a pump for adsorbed gas and a pressure as well as temperature differential develops across the divider whereupon the heated relatively pressurized gas, after giving up energy in a circuit which may include condensing and expansion apparatus, is returned to the container and again passed through the divider. In a further embodiment, water vapor is desorbed from a zeolite panel by daytime solar heat, condensed by ambient temperature cooling, and collected in a container. At night the vapor is adsorbed by the zeolite, lowering the pressure whereby more evaporates, is readsorbed, and ice forms in the container. In another embodiment, a solar heated liquid circulates through heat exchangers in zeolite filled pressure vessels with intervening liquid cooling apparatus. Nitrogen heated in one vessel is expelled at high pressure through an engine and adsorbed by a cooler low pressure vessel with valving determining which are the the high and low pressure vessels. |
