A DETAILED ANALYSIS OF ENTROPY PRODUCTION
AND IMPROVEMENT OF THE THERMODYNAMIC
CYCLE OF AN ADSORPTION REFRIGERATING PLANT

B. N. Okunev and M. S. Safonov*

UDC 541.183+536.755

A thermodynamic analysis of an adsorption refrigerating 
plant with closed loops for a working substance and auxiliary liquid 
heat carrier has been carried out in application to the adsorption 
pair "water-CaCl2 impregnated into the pores 

of a silica gel." Using the obtained periodic solutions of the system 
of energy-balance equations for the heat carrier and the sorbent layer, 
the most thermodynamically effective modes of operation of the refrigerating 
plant have been determined as functions of governing parameters. The 
entropy production in various modules of the plant is calculated, 
and the main sources of entropy generation are revealed. This made 
it possible to suggest an improved scheme of an adsorption refrigerating 
cycle with regenerative heat exchangers connected at the inlet and 
outlet from the adsorbers. The possibility of a considerable increase 
in the coefficient of thermodynamic efficiency in such a system has 
been justified.

*Deceased

M. V. Lomonosov Moscow State University, 1 Leninskie Gory, 
Moscow 119992, Russia; email: okunev@tech, chem.msu.ru. Translated 
from Inzhenerno-Fizicheskii Zhurnal, Vol. 79, No. 4, pp. 146-152, 
July-August, 2006. Original article submitted January 31, 2005; 
revision submitted October 14, 2004.