Question 2491. ____________ chart is known as transient heat conduction chart?

Question 2492. For a perfectly transparent surface (like gases), the____________________?

Question 2493. A fluid is flowing inside the inner tube of a double pipe heat exchanger with diameter ‘d’. For a fixed mass flow rate, the tube side heat transfer co-efficient for turbulent flow conditions is proportional to_____________________?

Question 2494. Heat transfer co-efficient (h) for a fluid flowing inside a clean pipe is given by h = 0.023 (K/D) (DVρ/μ)0.8 (CP.μ/k)0.4. This is valid for the value of NRe equal to_______________?

Question 2495. If air (a non-condensing gas) is present in a condensing vapor stream, it will ______________ the condensation rate of vapor?

Question 2496. Vibrations in the tubes of a shell and tube heat exchanger is induced due to the _________________?

Question 2497. The ratio of kinematic viscosity to thermal diffusivity is called the _______________ number?

Question 2498. For evaporation of viscous solution in a multiple effect evaporator, the preferred feeding scheme is _________________?

Question 2499. Heat waves_____________________?

Question 2500. 1000 Kg of liquid at 30°C in a well stirred vessel has to be heated to 120°C, using immersed coils carrying condensing steam at 150°C. The area of the steam coils is 1.2 m2 and the overall heat transfer co-efficient to the liquid is 1500 W/m2.°C. Assuming negligible heat loss to the surrounding and specific heat capacity of the liquid to be 4 kJ/kg.°C, the time taken for the liquid to reach desired temperature will be__________________?