| 摘要 |
In a two-stage absorption heating and cooling system with refrigerant storage apparatus for converting from a cooling to a heating mode of operation, provision is made to position the refrigerant storage tank in a location vertically above the condenser, and the tank is filled with refrigerant without the use of a pump. This is accomplished by fluidly interconnecting the high-temperature generator directly with the refrigerant storage tank such that after the refrigerant vapor from a high temperature generator is condensed in the low temperature generator, the pressure difference between the high temperature generator and the refrigerant storage tank causes the refrigerant condensate to flow to the refrigerant storage tank. A valve is provided to selectively drain the refrigerant from the storage tank to an evaporator sump when changing from a cooling to a heating mode of operation.
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