Exergy in technological heat exchange processes

Abstract

The exergy concept applied to technological heat exchange processes has been presented and discussed in detail. The special behavior of the thermal parts of the exergy flows could be stated once more and applied to formulate the thermodynamic transition formula and hence the generalized exergy rating quotient, then thermodynamic effectivity. All possible exergy rating quotients have been tested to prove their advantages and disadvantages. The appropriate discussion led to the statement that just the proposed thermodynamic effectivity quotient is a very promising way of solving the problem of complex system thermodynamic analysis. The considerations presented are the base for generalized analysis and rating of substance change processes.