Electric Critical Heat Flux Apparatus

The apparatus consists of a. m. s. shell, in which copper tubes are fitted. The baffle in the end box makes the tubes arrangement two-pass type. The cold fluid, i.e. air enters the shell and flows over the tubes. Hot fluid is hot water, which is obtained from a geyser and flows through the tubes. 25% cut baffles are provided in the path of air. Measuring tank measures water flows rate while an orifice with water manometer measure air flow. Thermometers measure the inlet and outlet temperatures of the fluids. The unit enables students to determine the heat transfer rate, heat transfer co-efficient, LMTD, and effectiveness of heat exchanger, in laminar as well as turbulent flow of air.