Coabsorbent cycles. Part one: Theory

Theoretical research laying down the basis of coabsorbent technology is presented. A coabsorbent cycle is built up by joining resorption cycle subcycles along a common isostere (y=yM=const.), so that opposed pair processes, of generation and resorption, and of absorption and desorption, are isobar or non-isobar and in mass (vapour) and heat exchange, and subcycles separate absorbents have a common point “M” (mixing point), where they are mixing up and cyclic regenerate the absorbent of mean concentration, yM. Paper includes nontruncated and truncated coabsorbent cycles, truncation theory, fractals, columns, COP estimate, new cycles with pressure and concentration stages, advanced cycles transposition into coabsorbent technology and model results for each. Coabsorbent cycle application could bring practical and efficiency increase advantages in absorption technology by: a) elimination of vapour rectification need; b) elimination of absorbent inventory problem; c) increase of cycle match with gliding sources and source-task; d) noncondensable refrigerant operation capacity; e) favouring behaviour for control and optimization; f) gax effect use and cycle exergy efficiency increase favouring; g) cycle complexity decrease; h) capacity to transpose known condensation absorption cycles, and create new useful ones.