An economizer in a boiler has a flow of water inside the pipes and hot gases on the outside flowing across the pipes. The flow rate of gases is 2,000 tons/hr and the gases are cooled from 390°C to 200°C. The specific heat of the gas is 1005 J/kg K. Water is heated (under pressure) from 100°C to 220°C. Assuming an overall heat transfer coefficient of 35 W/m^2K, determine the area required. Assume that the airflow is mixed.

Q: A heat pump with a coefficient of performance of 1.8 supplies energy to a house at a rate of 75 MJ…

A: To find: electrical power used by the heat pump

Q: A heat engine is operating on a Carnot cycle and has a thermal efficiency of 50 percent. The waste…

A:

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

A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: 3. A heat exchanger has an overall coefficient of heat transfer of 0.5 kW/m².0C. Heat loss is 11 kW…

A:

Q: The overall engine heat transfer coefficient (W/m2.K) for a single cylinder engine with a 0.09 m…

A:

Q: A heat engine cycle is executed with steam in the saturation dome. The pressure of steam is 1 MPa…

A: from the steam table for saturated liquid water  at Ps = 1 MPa, Ts = 179.9oC = (179.9 + 273) K =…

Q: An electric water cooler for drinking water should cool 10 gal/h of wate from 65 degrees Fahrenheit…

A:

Q: Someone proposes that the refrigeration system of a supermarket be overdesigned so that the entire…

A: Refrigeration is a process of removal(extraction) of heat from a low temperature heat…

Q: An engineer is proposing a refrigeration system. The refrigeration system is claimed to remove 595…

A: GIVEN DATA HIGHER TEMPERATURE T =98'F CONVERT IN KELVIN = 309.816K LOWER TEMPERATURE T = 38'F…

Q: A heat engine receives half of its heat supply at 1000 K and remaining half at 500 K. Heat is…

A: There is no correct answer in the options. The maximum efficiency will be 60%. Please find the…

Q: 1. An oil heater heats 100 kg per minute of oil from 30°C to 100°C in a counter-flow heat exchanger.…

A:

Q: Determine the expressions for the thermal efficiencies and coefficients of performance for…

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Q: n-walled, double-tube, counterflow heat exchanger is used to cool oil (Cp = 2.20 kJ/kg °C) from 150…

A: Given data as per question For Hot fluid , oil Cph=2.2 kJ/kg°C, Thi=150°C, Tho=40°C, m˙=2 kg/s For…

Q: 1) Pasteurized beer (Cp = 4.2 kJ/kg °C) is being cooled in a double pipe heat exchanger. The beer…

A:

Q: Calculate the net work output of a heat engine following path ABCDA in the figure below.

A: The net work output of the heat engine is the area enclosed in the cycle ABCDA on P-V diagram.…

Heat Exchangers

Heat exchangers are the types of equipment that are primarily employed to transfer the thermal energy from one fluid to another, provided that one of the fluids should be at a higher thermal energy content than the other fluid.

Heat Exchanger

The heat exchanger is a combination of two words ''Heat'' and ''Exchanger''. It is a mechanical device that is used to exchange heat energy between two fluids.