SYNTHESIS OF HEAT-EXCHANGE SYSTEMS WITH FLOWS OF VARIABLE HEAT CAPACITY INTEGRATED IN A TECHNOLOGICAL PROCESS

The conditions of minimum entropy production in a two-fl ow heat exchanger, in which one of the contacting fl ows has a defi nite temperature, were determined. The simplifi cation of a heat-exchange system with fl ows whose heat capacity depends on their temperature was considered for the particular case where one of these fl ows changes its phase state. The thermodynamic equivalence of two-fl ow and multifl ow heat transfer processes was investigated. An algorithm is proposed for the synthesis of a heat-exchange system, integrated in a technological process, in which the temperature and heat capacity of all the fl ows or some of them are fi xed and which has a minimum surface of contact interaction of the fl ows in it. It is shown that this algorithm holds for a heat transfer process of any kinetics
   
Author:  A. M. Tsirlin, A. I. Balunov, and L. G. Gagarina
Keywords:  multifl ow heat exchange, irreversibility, minimum heat dissipation, thermodynamic equivalence, heat load, integrated systems
Page:  813