Heat Transfer Log mean temperature difference (LMTD) cannot be used, if heat transfer co-efficient over the entire heat exchanger is not constant none of the listed here there exists an unsteady state the heat capacity is not constant and there is a phase change. heat transfer co-efficient over the entire heat exchanger is not constant none of the listed here there exists an unsteady state the heat capacity is not constant and there is a phase change. ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Hot water (0.01 m³ /min) enters the tube side of a counter current shell and tube heat exchanger at 80°C and leaves at 50°C. Cold oil (0.05 m³/min) of density 800 kg/m³ and specific heat of 2 kJ/kg.K enters at 20°C. The log mean temperature difference in °C is approximately 37 45 50 32 37 45 50 32 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For an ideal black body Transmissivity = 1 Emissivity = 0 Absorptivity = 1 Reflectivity = 1 Transmissivity = 1 Emissivity = 0 Absorptivity = 1 Reflectivity = 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a multipass shell and tube heat exchanger, tube side return pressure loss is equal to __________ the velocity head none of the listed here four times square root of twice none of the listed here four times square root of twice ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer If the thermal conductivity of a wall material is independent of temperature, the steady state temperature distribution in the very large thin plane wall having steady, uniform surface temperature follows __________ law. Parabolic Logarithmic Hyperbolic Linear Parabolic Logarithmic Hyperbolic Linear ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer What is the absorptivity of a black body? 0.95 0.78 1 0.95 0.78 1 ANSWER DOWNLOAD EXAMIANS APP
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