Refrigeration – Disparate apparatus utilized as heat source or absorber – With sorption
Patent
1992-09-15
1993-08-03
Makay, Albert J.
Refrigeration
Disparate apparatus utilized as heat source or absorber
With sorption
62476, B60H 304
Patent
active
052318494
ABSTRACT:
An ammonia absorption refrigeration system includes a generator vessel (G) in a casing (M) through which engine exhaust gas flows in heat exchange relation with the generator vessel, ammonia/water refrigerant solution being contained in the generator to be vaporized therein by the heat from the exhaust gas, a condenser (C) through which vaporized refrigerant flows from the generator, at least one evaporator (U, V) through which refrigerant flows from the condenser, and at least one absorber (W, Y) through which refrigerant flows from the evaporator (S) to be returned by a refrigerant pump (H, J) to the generator (G). A coolant flow circuit is interconnected with the evaporators for cooling secondary coolant in the evaporators and includes a coolant storage tank (Q) containing the coolant which may be a low freezing-point liquid or a refrigerant brine, a coolant pump (N) connected to the coolant tank for pumping coolant from the tank through cooling conduits (30-37) which conduct the coolant through the evaporators in heat exchange relationship with the refrigerant therein and through respective comfort zone and cargo zone cooling units for cooling the zones at different temperatures, the comfort zone being a passenger zone in the tractor of a tractor-trailer for example, and the cargo zone being a refrigerated compartment in the trailer. Refrigerant and coolant conduits, valves in the conduits including pressure-reducing valves (9, 11, 14, 18), temperature sensors (100, 102, 104, 110) and control devices (106, 114) are provided to control the separate flows of the refrigerant and coolant and the flow of the exhaust gas to the generator to obtain the desired temperatures in the comfort zone and cargo zone.
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Doerrler William C.
Makay Albert J.
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