What is the correct answer?


In counter flow heat exchangers

A. Both the fluids at inlet (of heat exchanger where hot fluid enters) are in their coldest state

B. Both the fluids at inlet are in their hottest state

C. Both the fluids at exit are in their hottest state

D. One fluid is in hottest state and other in coldest state at inlet

Correct Answer :

B. Both the fluids at inlet are in their hottest state

Related Questions

The heat of sun reaches to us according to According to Stefan Boltzmann law, the total radiation from a black body… Heat flows from one body to other when they have The amount of heat flow through a body by conduction is Emissivity of a white polished body in comparison to a black body is Thermal diffusivity is The value of Prandtl number for air is about Sensible heat is the heat required to LMTD in case of counter flow heat exchanger as compared to parallel flow… Which of the following is a case of steady state heat transfer? The heat is transferred by conduction, convection and radiation in A cube at high temperature is immersed in a constant temperature bath.… The process of heat transfer from one particle of the fluid to another… Planck's law holds good for The heat transfer by conduction through a thick sphere is given by Depending on the radiating properties, body will be transparent when Heat conducted through per unit area and unit thick face per unit time… An ordinary passenger aircraft requires a cooling system of capacity. In regenerator type heat exchanger, heat transfer takes place by Radiation is the process of heat transfer in which heat flows from a ________,… If the temperature of a solid surface changes from 27°C to 627°C,… Depending on the radiating properties, a body will be opaque when Thermal diffusivity of a substance is The automobile radiator is a heat exchanger of The ratio of the energy absorbed by the body to total energy falling on… An electric cable of aluminium conductor (k = 240 W/mK) is to be insulated… Thermal conductivity of air with rise in temperature Total emissivity of polished silver compared to black body is Thermal conductivity of a material may be defined as the In counter current flow heat exchanger, the logarithmic temperature difference…