GB513090A - Improvements in or relating to absorption refrigerating systems - Google Patents

Abstract

513,090. Refrigerating. ELECTROLUX, Ltd. March 31, 1938, No. 9868. Convention date, April 1, 1937. [Class 29] Absorption systems. - In a continuous-cycle inert-gas system liquefied refrigerant is accumulated out of circulation in a vessel 20 amounts dependent on conduction of heat from a warm part of the system, for example the vapour expulsion conduit 19 of the generator 1, the temperature of this part relatively to the condenser temperature varying according to atmospheric temperature. The system comprises a horizontal generator, rectifier 7, condenser 2, evaporator 3, absorber 4 cooled by a closed-cycle heat transfer system 13, 14, liquor and gas heat exchangers 9, 8 respectively, and a gas pressure vessel 5. The vessel 20 receives liquefied refrigerant from the condenser and supplies it to the evaporator through conduits 21, 23 or 22, 23 according to the level. The conduit 21 is of small bore or provided with a liquid seal or both, and when the conduit 19 is warm, due to warm atmosphere, gas bubbles formed in conduit 21 prevent flow of liquid therethrough to the evaporator, consequently raising the liquid level in vessel 20 until it reaches the other conduit 22. Thus the concentration of solution in the system is decreased. The conduit 21 may alternatively be in heat exchange with the absorber cooling system. In a cool atmosphere vapour bubbles condense in conduit 21 and flow to the evaporator is not interrupted.