Determining parameters tractor radiators

Abstract

The information on efficiency of the cooling surfaces of autotractor radiators has been provided in this article. Usually autotractor radiators have a tubular and plate construction of a core. Such construction litters external surfaces less. Therefore it is determined and accepted for mobile machines which work in the conditions of the increased dust content. The cooling tubes and the cooling surfaces (plates or tapes) are the basic heat-transmitting elements of a radiator. It is known that warmth is transmitted to an air flow through walls of tubes and the cooling plates. Therefore materials which are applied to production of radiators shall conform the main requirements (to transfer warmth effectively, to provide durability and reliability of a construction, technological effectiveness of production of details and a radiator in general, economic efficiency). In article the possibility of materials alternative use (aluminum alloys) for production of radiators has been considered. Aluminum radiators of a solder construction in comparison with copper and brass radiators have the mass 30-35% less. The efficiency evaluation of a cooling system of the BELARUS-80.1 tractor with tubular and plate brass and tubular and plate aluminum radiators by results of experimental research has been determined. The author of article has offered a methodology and has executed calculation of temperature cooling liquid at the exit from the engine at change of a heat transfer coefficient.