In a counter-flow heat exchanger, a hot fluid is cooled from 100°C to 70°C by using a cold fluid that gets heated from 25°C to 55°C. The LMTD value of the heat exchanger is

NTU effectiveness method for the analysis of heat exchanger is used when:

Which of the following heat exchangers gives parallel and linear temperature profile for both cold and hot fluid?

In a heat exchanger, it is observed that ΔT1 = ΔT2, where ΔT1 is the temperature difference between the two single phase fluid streams at one end and ΔT2 is the temperature difference at the other end. This heat exchanger is

TIn a double-pipe heat exchanger, the cold fluid is water with an inlet temperature 20°C and mass flow rate 20 kg/s and the hot fluid water inlet temperature 80°C and mass flow rate 10 kg/s. Assume that for water Cp = 4.2 kJ/kg°C, independent of temperature. What is the maximum temperature to which the cold fluid can be heated in a parallel flow and in a counter flow heat exchanger?