Accession Number : AD0683966

Title :   CALCULATION OF REGENERATION IN CYCLES USING WORKING MEDIA WITH VARIABLE SPECIFIC HEAT,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Bazhin,M. A. ; Bubnov,V. P. ; Nesterenko,V. B.

Report Date : 22 NOV 1968

Pagination or Media Count : 10

Abstract : In view of recent proposals to use chemically reacting gas systems as working media in gas turbines, earlier research was continued on regenerative turbine cycles. It was shown that regeneration of heat can make a major contribution to the efficiency of the system. Calculations are presented for both uniflow and counter-flow systems, with account taken of the variation in the specific heat of the gas as a result of the chemical reactions that take place in it. The calculations are made on the basis of the heat balance equation for the heating and heated sides of the regenerating equipment, with allowance for the fact that in the case of variable specific heat the temperature differential within the system (relative to one of the terminal points of the regenerator) can occur not only on the ends of the interval of variation of the the independent variable (as is the case for gases with constant specific heat) but also inside the interval. The conditions under which maxima occur inside the interval are determined for both the uniflow and counter flow cases. The calculations demonstrate that allowance for the variable specific heat alters the heat-balance calculations significantly. (Author)

Descriptors :   (*GAS TURBINE REGENERATORS, SPECIFIC HEAT), EFFICIENCY, THERMOCHEMISTRY, MATHEMATICAL ANALYSIS, AERODYNAMIC CHARACTERISTICS, USSR

Subject Categories : Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE