POWER EXPENDED FOR PUMPING HEAT-TRANSFER AGENTS AND 
EFFICIENCY OF THE HEAT EXCHANGE
IN CONICAL RADIATIVE SLOT RECUPERATORS

V. E. Loginov

UDC 621.184.52:51-7

Formulas for calculating the amount of power expended 
for the pumping of heat-transfer agents (air and smoke gases) in conical 
radiative slot recuperators with account for the initial acceleration 
of these agents, the acceleration of them in the process of their 
movement, and their friction on the walls of a channel have been derived. 
The dependence of the energy coefficient on the flow rate of a heated 
air, pumped in such a recuperator in the forward-flow and counterflow 
regimes, and on the recuperator length has been determined on the 
basis of heat-engineering calculations performed with the use of mathematical 
models involving the formulas derived.

Rostov-on-Don State Academy of Agricultural Machinery 
Industry, 2 Strana Sovetov Sq., Rostov-on-Don, 344023, Russia; email: 
ve_loginov@mail.ru. Translated from Inzhenerno-Fizicheskii Zhurnal, 
Vol. 79, No. 2, pp. 174-177, March-April, 2006. Original article 
submitted July 26, 2004; revision submitted June 27, 2005.