초록 ▼

Multi-effect regenerative absorption cycles which provide a high coefficient of performance (COP) at relatively high input temperatures. An absorber-coupled double-effect regenerative cycle (ADR cycle) (10) is provided having a single-effect absorption cycle (SEA cycle) (11) as a topping subcycle an

Multi-effect regenerative absorption cycles which provide a high coefficient of performance (COP) at relatively high input temperatures. An absorber-coupled double-effect regenerative cycle (ADR cycle) (10) is provided having a single-effect absorption cycle (SEA cycle) (11) as a topping subcycle and a single-effect regenerative absorption cycle (1R cycle) (12) as a bottoming subcycle. The SEA cycle (11) includes a boiler (13), a condenser (21), an expansion device (28), an evaporator (31), and an absorber (40), all operatively connected together. The 1R cycle (12) includes a multistage boiler (48), a multi-stage resorber (51), a multisection regenerator (49) and also uses the condenser (21), expansion device (28) and evaporator (31) of the SEA topping subcycle (11), all operatively connected together. External heat is applied to the SEA boiler (13) for operation up to about 500 degrees F., with most of the high pressure vapor going to the condenser (21) and evaporator (31) being generated by the regenerator (49). The substantially adiabatic and isothermal functioning of the SER subcycle (12) provides a high COP. For higher input temperatures of up to 700 degrees F., another SEA cycle (111) is used as a topping subcycle, with the absorber (140) of the topping subcycle being heat coupled to the boiler (13) of an ADR cycle (10). The 1R cycle (12) itself is an improvement in that all resorber stages (50b-f) have a portion of their output pumped to boiling conduits (71a-f) through the regenerator (49), which conduits are connected to and at the same pressure as the highest pressure stage (48a) of the 1R multistage boiler (48).

대표청구항 ▼

An absorber-coupled multi-effect regenerative cycle comprising: (a) a single-effect absorption cycle having (i) a boiler having an inlet and liquid and vapor outlets, (ii) a condenser having an inlet connected to said boiler vapor outlet and having an outlet, (iii) an evaporator having an inlet and

An absorber-coupled multi-effect regenerative cycle comprising: (a) a single-effect absorption cycle having (i) a boiler having an inlet and liquid and vapor outlets, (ii) a condenser having an inlet connected to said boiler vapor outlet and having an outlet, (iii) an evaporator having an inlet and an outlet, (iv) means for connecting and reducing the pressure from said condenser outlet to said evaporator inlet, (v) an absorber having inlets connected to said evaporator outlet and the said boiler liquid outlet and having an outlet, (vi) means for pumping fluid from said absorber outlet to said boiler inlet, (b) a single-effect regenerative cycle having (i) a multistage boiler having a plurality of boiling stages each with an inlet and liquid and vapor outlets, means for serially connecting said boiler stages with the liquid outlet of one connected to the inlet of the next, and means for progressively reducing the internal pressure of the successive boiling stages, (ii) a multistage resorber having a plurality of absorber stages each having liquid and vapor inlets and an outlet, means for serially connecting the absorber stages with the outlet of one connected to the liquid inlet of the next, and means for progressively increasing the internal pressure of the successive absorber stages, (iii) means for cooling and maintaining said resorber stages at a substantially constant temperature, (iv) a multi-section regenerator having a shell, liquid and vapor inlets, an outlet, and means forming a plurality of serially connected sections within said shell for flow of fluid from said inlet to said outlet, (v) means for connecting the liquid outlet of the lowest pressure boiler stage to said regenerator liquid inlet, (vi) means for connecting the outlet of said regenerator to the inlet of the lowest pressure resorber stage, (vii) means for individually connecting the vapor outlets of all but the highest pressure boiling stage to the vapor inlets of all but the lowest pressure resorber stages, (viii) means for connecting the outlet of the highest pressure resorber stage through said serially connected sections of said regenerator and in heat exchange relation with fluid flowing through said sections, and then to the inlet of said highest pressure boiler stage, (ix) means for connecting the vapor outlet of the highest pressure boiler stage to said condenser inlet, (x) means for connecting said evaporator outlet to the vapor inlet of said regenerator, (c) means for coupling said absorber of said single-effect absorption cycle and said multistage boiler of said single-effect regenerative cycle for transfer of heat from said absorber to said multistage boiler.