Nusselt’s theory of condensation - Regimes of Pool boiling and F

Which of the following describes the regime of boiling where bubbles form at nucleation sites and depart from the heating surface?

• a. Pool boiling
• b. Flow boiling
• c. Forced boiling
• d. Natural boiling

Which type of boiling is associated with the flow of a liquid over a heated surface, creating a thin liquid film that vaporizes as it flows downstream?

• a. Pool boiling
• b. Flow boiling
• c. Forced boiling
• d. Natural boiling

Which of the following is not one of the regimes of pool boiling?

• a. Film boiling
• b. Nucleate boiling
• c. Transition boiling
• d. Wall boiling

Which of the following is a correlation used to calculate the heat transfer coefficient during boiling?

• a. Nusselt correlation
• b. Reynolds correlation
• c. Froude correlation
• d. Weber correlation

What method is used to determine the heat transfer rate and the surface area required for a heat exchanger with a given set of operating conditions?

• a. LMTD method
• b. NTU method
• c. Log method
• d. Slope method

What is the heat transfer coefficient for boiling water on a copper surface with a heat flux of 1000 W/m2 if the surface temperature is 110°C and the saturation temperature is 100°C? (Assume the latent heat of vaporization of water is 2257 kJ/kg)

• a. 234 W/m2K
• b. 345 W/m2K
• c. 456 W/m2K
• d. 567 W/m2K