A vehicle travelling at 100 km/h has air passing through its radiator at the rate of 100 kg mol per minute. The hot water from cooling the engine is circulated through the radiator at the rate of 10 L per minute, and as it passes through the radiator it is cooled from 78 °C to 32 °C. Assume the car is in good condition so the radiator has no leaks and the air and water do not contact. Given the heat capacity of the air is 1.0035 J·g-1·K-1, what is the temperature of the air exiting the radiator (assume air has a molecular weight of 29 g·mol-1).

Q: A steady stream of air enters a horizontal compressor at the rate of 0.02 kg/s. The air  temperature…

A: During a steady flow process, the total energy content of a control volume remain constant i.e.,…

Q: Air enters the compressor of a gas turbine power plant at a pressure of 100 kPa and a temperature of…

A: The inlet and exit enthalpies of the air in turbine are:

Q: Nitrogen gas at constant pipeline conditions of 200 kPa and 300 K passes slowly through a valve into…

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Q: Water is flowing into a factory in a horizontal pipe with a radius of 0.0223 m at ground level. This…

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Q: 4)Carbon dioxide flows steadily through a varying cross-sectional-area duct such as a nozzle shown…

A: The first step is to determine the conditions at the throat of the nozzle, where the area is…

Q: Liquid water enters a nozzle from the inlet with area of 1000 cm2, and leaves the nozzle from the…

A: Given data: Inlet velocity, V1=10 m/s and inlet area of the nozzle, A1=1000 cm2=0.1 m2. Let V2 be…

Q: In a gas turbine unit, the gases flow through the turbine at 13 kg/s and the power developed by the…

A: Given data: Mass flow rate of gas (m.)=13 kg/s The power developed by the turbine (P)=14000 kW The…

Q: A sewage aeration blower running at 3,500 rpm is designed to deliver 34,000 m3/hr of air from 20°C…

A: Given DataN1=3500 rpmQ1=34000m3/hT2=20°CT1=43°CP1=1.56 kg/cm2P2=1.56 kg/cm2η=70%T1=43°C

Q: Steam drives a turbine with a flow rate of 10000 kg/h. The steam enters the turbine at 60 atm and…

A: m˙=10000 kg/h=2.778 kg/sP1=60 atmT1=300oCV1=40 m/sZ1=3mP2=1 atmV2=250 m/sW=350 kWQ=-50…

Q: The power available in a jet having a cross-sectional area of 0.005 m2 with a velocity of 25.8 m/s

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Q: Water with density 1000 kg/m3 and gauge pressure 31.5 kPa flows through a ground level pipe with…

A: The density of water,(ρw)=1000 kg/m3 The gauge pressure of the water,(P)=31.5 kPa The velocity of…

Q: the cylinder of an air motor the compressed air has a specific internal energy of 500 kJ/kg at the…

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Q: A boiler is being fed by a conical tank seen in the figure. The piping between tanks is through a…

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Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.