Q19: It is defined as a component in the plant cycle that consists of a closed vessel that uses the heat produced by the combustion of fuel to efficiently vaporize and convert water into steam at the desired temperature and pressure. A. Steam Drum B. Boiler C. Furnace (D) Reheater Q20: Economizer of the boiler is used A. Extract heat from flue gases and preheat the air B. To keep the pressure constant C. Extract heat from air and preheat the flue gases D. Keep temperature constant

Q: A 'long' steel shaft of 10 cm diameter is austenised at 870°C and then quenched in a liquid at 30°C.…

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Q: The liquid food is flowed through an uninsulated pipe at 90 ° C. The product flow rate is 0.4 kg / s…

A: Given: T1 = 90 oC             T1 = 15 oC Required: Convection coefficient in the pipe hfood =?…

Q: Estimate the heat exchanger area needed to cool 55,000 lb/hr of a light oil (specific heat = 0.74…

A: Flow rate of light oil = 55000 lb/hr Specific heat of oil = 0.74 Btu/lb°F Initial temperature of oil…

Q: When 120 kJ work is done on a closed system during a process, the total energy of the system…

A: Given that, the system is a closed system, where work is done on the system. Hence, work will be…

Q: A long cylindrical steel rod is heat treated in an oven that is 7 meters long and is maintained at a…

A: Given data: Length of the cylindrical steel rodd = 7 m Diameter of the rod = 10 cm Initial…

Q: Consider an air standard dual cycle which has a compression ratio of 17 and a cutoff ratio of 1.2.…

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Q: After transfer of 1.40 kJ of thermal energy to a 0.546-kg block of copper the temperature is 45.2…

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A: For calculating the area we need heat duty.Heat duty is calculated from mass flow rate * heat of…

Q: When a system is taken from state a to state b in the accompanying figure along path acb, 100 J of…

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Q: 15.0 g sample of aluminum, whose temperature is 4.0 °C, experiences an energy change of 189 J. The…

A: This question is based on the concept of Heat transfer. Data given: Substance used  = Aluminum Mass…

Q: The reduction in condensing pressure makes the system: c) has no effect on efficiency b) less…

A: Answer: option a) more efficient

Q: 2-37 Water is being heated in a closed pan on top of a range while being stirred by a paddle wheel.…

A: Given  Heat transfer to water Qin = 30 kJ Heat loss to surrounding Qout =  5 KJ Work done by paddle…

Q: The liquid food is flowed through an uninsulated pipe at 90 ° C. The product flow rate is 0.3 kg / s…

A: Given DataMass flow rate of food  m=0.3 kg/sSpecific heat of food  Cp=4 KJ/kg.KThermal conductivity…

Q: Calculate the mean flame height of a liquid pool with a circular diameter of 1.0m. Assume the liquid…

A: Answer is  height of the flame is dependent on the heat produced by the fuel or heat release…

Q: The liquid food is flowed through an uninsulated pipe at 90 ° C. The product flow rate is 0.3 kg / s…

A: Given: temperature of liquidT1= 90°C  flow rate m= 0.3 kg / s  density ρ= 1000 kg / m³ specific heat…