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Assumptions made for calculation of logarithmic mean temperature difference are (i) Constant overall heat transfer coefficient (ii) The kinetic and potential energy changes are negligible (iii) There is no conduction of heat along the tubes of heat exchanger Identify the correct statements

Assumptions made for calculation of logarithmic mean temperature difference are (i) Constant overall heat transfer coefficient (ii) The kinetic and potential energy changes are negligible (iii) There is no conduction of heat along the tubes of heat exchanger Identify the correct statements Correct Answer i, ii and iii

These assumptions are made for simplicity. During heat exchange between two fluids, the temperature of the fluids change in the direction of flow and consequently there occurs a change in the thermal head causing the flow of heat.

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