Applied Thermal and Hydraulic Engineering — Winter 2019

Define steam rate, thermal conductivity and ton of refrigeration.

Define density, viscosity, surface tension and capillary.

Explain with a neat sketch the components of centrifugal pump.

Write the classification of heat exchangers.

Explain open cycle gas turbine with schematic diagram.

Explain the working of a simple air refrigeration system without evaporative cooling with neat sketch.

Plot schematic diagram, T-s and h-s diagram of Rankine cycle. Derive the expression for thermal efficiency of Rankine cycle.

Define dry air, relative humidity and dry bulb temperature.

Enlist the different methods of improving efficiency of Rankine cycle and explain any one in detail.

Derive the expression for thermal efficiency of ideal Brayton cycle in terms of pressure ratio (r ). Plot the same cycle on T-s and p-v diagram p also.

Write the types of fins and their application.

Define black body, opaque body, white body and gray body

Derive expression for LMTD for parallel flow heat Exchanger.

Describe the absolute pressure, atmospheric pressure and gauge pressure.

What is specific speed of centrifugal pump? Derive an expression of specific speed of centrifugal pump.

Write a short note on construction and working of Pelton wheel turbine with neat sketch.

Write classification of turbines.

Define cavitation and explain in brief about cavitation in pumps.

Derive an expression for the discharge through a venturimeter for measurement of flow through pipe with neat sketch.

Define notches and weirs. List the types of notches.

Explain U-tube manometer.

State Bernoulli’s equation and write assumptions and applications of Bernoulli’s equation.

Differentiate between Francis and Kaplan turbines.

What is draft tube? List the functions of draft tube.

Obtain an expression for the work done by the impeller of a centrifugal pump on water per second per unit weight of water.