﻿ Basic Theory of the Car Radiator - Guangzhou ChiBenDa Automobile Radiator Co., Ltd.
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# Basic Theory of the Car Radiator

## Heat conduction of car radiator

There are three heat conduction methods for the heat conduction of car radiators, namely heat conduction, convection, and radiation. Among them, the relationship between thermal radiation and temperature is very close, and under normal circumstances, the temperature of the thermal fluid of the vehicle radiator is not high, and the thermal radiation is limited. Therefore, we usually do not consider heat radiation when designing.

The law of heat conduction phenomenon is summarized as Fourier's law. That is, Q=-λf(dt/dx). In the formula, λ is the proportional coefficient, called thermal conductivity, and the negative sign indicates that the direction of heat transfer is opposite to the direction of temperature rise. The basic calculation of convective heat transfer is the Newtonian cooling formula, that is, Q=α(tg-td), where α is the convective heat transfer coefficient, tg is the temperature of the high-temperature fluid, and td is the temperature of the low-temperature fluid.