초록 ▼

Absorption-type refrigeration methods and systems are utilized to minimize decomposition of a heat-transfer additive by removing, in generators operating below the additive\s thermal decomposition temperature, the additive from the fluid before it reaches portions of the cycle operating above its th

Absorption-type refrigeration methods and systems are utilized to minimize decomposition of a heat-transfer additive by removing, in generators operating below the additive\s thermal decomposition temperature, the additive from the fluid before it reaches portions of the cycle operating above its thermal decomposition temperature. Inverse series and inverse series-parallel connected triple effect methods and systems operate at lower temperatures that minimize decomposition and yield improved performance by reducing the pumping ratio and by decreasing the effectiveness of certain heat exchangers below standard practice.

대표청구항 ▼

An absorption-type refrigeration system, comprising: an absorber in which a fluid including absorbent, refrigerant, and heat-transfer additive absorbs refrigerant vapor, and heat-transfer additive vapor condenses on the surface of the fluid, to form a weak fluid; a low-temperature generator for heat

An absorption-type refrigeration system, comprising: an absorber in which a fluid including absorbent, refrigerant, and heat-transfer additive absorbs refrigerant vapor, and heat-transfer additive vapor condenses on the surface of the fluid, to form a weak fluid; a low-temperature generator for heating the weak fluid to a temperature sufficient to vaporize the refrigerant but below the thermal decomposition temperature of the heat-transfer additive to form a low-temperature vapor including refrigerant and heat-transfer additive, and a low-temperature liquid including refrigerant and absorbent; an intermediate-temperature generator for heating the low-temperature liquid to a temperature sufficient to vaporize the refrigerant but below the thermal decomposition temperature of the heat-transfer additive to form an intermediate-temperature vapor including refrigerant and heat-transfer additive, and an intermediate-temperature liquid including absorbent but substantially lacking heat-transfer additive; a high-temperature generator for heating the intermediate-temperature liquid to a temperature sufficient to vaporize the refrigerant to form a high-temperature vapor including refrigerant, and a high-temperature liquid including absorbent; a condenser for condensing the low-temperature vapor to form a condensed liquid including refrigerant and heat-transfer additive; an evaporator including an evaporator heat exchanger for vaporizing at least the condensed liquid to cool a medium in the evaporator heat exchanger and to form vapor including refrigerant and heat-transfer additive that is applied to the absorber; and a low-temperature heat exchanger having an effectiveness within the range of 0.68 to 0.74 that places the weak fluid in a heat exchange relationship with the high-temperature liquid, to heat the weak fluid before entering the low-temperature generator.