GB411521A - Improvements in and relating to absorption systems for cooling, heating and heat exchange purposes - Google Patents

Abstract

411,521. Refrigerating ; heating systems. SIEMENS-SCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. Dec. 8, 1932, No. 34854. Convention date, Dec. 8, 1931. [Class 29.] Absorption refrigerating systems working on a reversing cycle are associated in heat transfer relation with other reversing or continuouscycle absorption systems or with hot water heating systems, steam power plant or like heat conversion systems, the heat of condensation, evaporation or absorption being conveyed from the primary system to the associated system intermittently. In one system, Fig. 1, two linked reversing absorption systems serve to cool a chamber 28. The generator-absorber 1 of the first is heated by an element 5 and the heat of condensation in its condenser-evaporator 2 is transferred by a closed cycle condensing heat transfer system 7, 8 to the generatorabsorber 11 of the second system. The two generator-absorber vessels and the condenserevaporator 12 of the second system are watercooled under the control of valves 17, 24, 18, which together with the heating element 5 are timed by a clock switch 21. Closed-cycle systems 22, 23 transfer heat between the chamber 28 and the evaporators of the two systems. In a second arrangement (Fig. 2, not shown) employing three overlapping reversing absorption systems, the generator-absorbers are each heated by exhaust steam, and two of them are cooled by heat transfer to the evaporators of the others, while the heat of absorption of the third is transmitted to a water heater tank. In another arrangement, Fig. 3, the condenser evaporator 172 of a generatorabsorber 171 is located within and serves to heat a second generator-absorber 176 connected to an air-cooled condenser 178 and an evaporator 179, 180 in a cold chamber. The cooling-water of the first generator-absorber is recooled in an exposed coil 186. In the arrangement shown in Fig. 4 two reversing systems are brought into heat exchange by the convection air currents in a chamber 229 cooled by the evaporators 228, 231. The condenser-evaporator 231 of the right-hand system acts as a condenser during the cold-producing period of the first system and as an evaporator during the generating period of the first and thereby prevents undue rise of temperature in the chamber. In a steamgenerating and power plant (Fig. 5, not shown), an even number of reversing absorption systems are linked so as to produce heat to raise high and low pressure steam for stage turbines. The condensation of the turbine exhaust provides heat for some of the systems. Several arrangements of linked reversing and continuous cycle systems are described. One such arrangement comprises a generatorabsorber 401, Fig. 6, heated by an electric element 402 and cooled by a closed-cycle system 409 having a part 411 located in an air flue 412, and a condenser-evaporator 404 from which heat is transferred, during the condensing period, by a closed system 405, 408 to the generator 421 of a continuous cycle system. The latter system includes the usual separator 424, condenser 426, evaporator 431 and absorber 433, and when the reversing system is in the absorption phase the generator of the continuouscycle system is heated by an electric element 422. A closed system 414, 415 conveys cold from the condenser-evaporator to the air in a flue 413, which is also cooled by the evaporator 431. In another arrangement (Fig. 7, not shown), the continuous-cycle system is of the inert gas type, and the condenser-evaporator of the reversing system cools a cabinet compartment to a lower temperature than that of the compartment cooled by the other evaporator. The condenser-evaporator may be located within the absorber and the generator-absorber may receive heat from the heating source of the generator of a continuous-cycle system. Alternatively the continuous-cycle generator may receive heat solely from the reversing system. The method may be applied to non-condensing absorption systems. The Specification, as open to inspection under Sect. 91, comprises also the following :-A " heat storage " system may comprise a generatorabsorber containing alkaline liquor and heated by steam injected through a nozzle so as to withdraw condensed steam from a condenser. The generated vapour is condensed by a low lying source of cold. This subject-matter does not appear in the Specification as accepted.