A.Prandtl number
B.Grashoff number
C.Stanton number
D.Weber number
Related Mcqs:
- A dimensionless heat transfer coefficient which gives a measure of the ratio of the heat transfer rate to the rate at which heat would be conducted within the fluid under a temperature gradient is known as
- A dimensionless number which is the ratio of mass heat flow rate to the heat flow rate by conduction under a unit temperature gradient and through a thickness L is known as
- A non-dimensional number which generally finds application in mass transfer problems is
- For which fluid combination the value of overall heat transfer coefficient will be least?
- A non-dimensional number generally associated with natural convection heat transfer is
- At Rs. X per kWh how much will it cost to maintain a temperature of 35?C for 24 hours in a box 0.5 m square on each side if the outside temperature is 20?C and the overall heat transfer coefficient for the box is 0.6 W/(m2 K)
- There metal walls of same cross-sectional area having thermal conductivity in the ratio 1 : 2 : 4 transfer heat at the rate of 15000 kcal/hr. For same thickness of wall, the temperature deop will be in the ratio
- In which of the following heat exchange process, the value of overall heat transfer coefficient will be highest?
- When a fluid is passed in steady, flow through a porous plug in a duct under such conditions that heat transfer, kinetic energy change and potential change is negligible, the process is called
- A liquid to liquid counterflow heat exchanger is used to heat cold fluid from 50?C to 150?C. Assuming that the hot fluid enters at 250?C and leaves at 200?C, the log mean temperature difference for the heat exchanger will be closer to
