Mathematical efficiency model of the block-module cooling system of automotive vehicles and tractors

Abstract

Abstract As related to other heat exchange systems, the operation of a heat exchanger should be based on the quality analysis of the heat carrier flows. One of these quality characteristics is the uneven distribution of temperature and air flow velocity ahead of the heat exchanger. To obtain more accurate performance indicators, it is necessary to build mathematical models of thermal processes in the radiator taking into account the unevenness of the air flow. The improvement of cooling systems is one of the priorities for the development of motor vehicles, as the temperature and dynamic loads in the engines are increasing due to the requirements that are becoming more stringent every year. First of all, this relates to environmental friendliness and fuel efficiency parameters, and secondly, it is service maintenance and labor safety, etc. Given this trend, it is necessary to pay attention to such important issues as improving the design of cooling systems, influencing the efficiency of heat balance distribution in the internal combustion engine. When developing new heat exchangers, a thermal engineering design should be analyzed to determine the heat exchange surface area that ensures the transfer of a given amount of heat from one heat carrier to another.