| 摘要 |
The use of molecular sieve zeolite for the effective utilization of low-grade heat sources such as solar energy. A system includes molecular sieve zeolite and a low pressure polar gaseous fluid adapted to be adsorbed by the zeolite which is in a closed container and circuit which includes a condenser and a gas expansion cooler member. When the container is heated, a gas is given off from the zeolite, cooled in a condenser, and thereafter expanded for cooling purposes. In one embodiment, the cooled gas is received in a further container having the zeolite therein and subsequently, upon cooling of the first container, the gaseous fluid may be returned thereto via again a condenser and gas expansion cooler member to provide further cooling. In another embodiment, zeolite is formed by sintering same to form a pressure resistant divider across the container. One side of the divider is heated to create a temperature gradient across the divider which functions as a heat energized pump for the adsorbed gaseous fluid, a pressure as well as temperature differential developes within the container across the divider whereupon the heated relatively pressurized gas, after giving up some of its energy in a circuit which may include a condenser and gas expansion member, is returned to the container to be again pressurized and heated by the action of the sintered zeolite divider. In a further embodiment, water vapor is adsorbed from a zeolite panel by solar heat during the day and condensed by cooling, and collected in a container, and at night, at a lower relative pressure, it evaporates and is readsorbed by the zeolite panel whereupon ice is formed in the container which collects the water during the day. In another embodiment, a solar heated liquid is circulated in series through heat exchangers in plurality of zeolite filled pressure vessels with intervening cooling coils for the liquid. Nitrogen in one of the vessels is expelled at high pressure through an engine to be adsorbed by a cooler low pressure heated vessel with valving cycling which vessel is at high pressure and which is at low pressure.
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