A counter-flow double-pipe heat exchanger is to heat water from 20°C to 90°C at a rate of 1.4 kg/s. The heating is to be accomplished by geothermal water available at 160°C at a mass flow rate of 2.2 kg/s. The inner tube is thin-walled and has a diameter of 1.5 cm. If the overall heat transfer coefficient of the heat exchanger is 650 W/m2°C, determine the length of the heat exchanger required to achieve the desired heating. The specific heats of water and geothermal fluid to be 4180 and 4310 J/kg °C, respectively. Select one: a. 100.6 m b. 161.8 m c. 121.3 m d. 81.7 m

Q: A cross-flow air-to-water heat exchanger with an effectiveness of 0.65 is used to heat water (cp =…

A: Given data: Effectiveness, ε = 0.65 Specific heat of water, Cpc = 4.18 kJ/kg Mass flow rate of…

Q: Water (cp = 4180 J/kg·K) is to be heated by solarheated hot air (cp = 1010 J/kg·K) in a double-pipe…

A: Given data: Specific heat of water, Cpc = 4180 J/kg Mass flow rate of water, mc = 0.1 kg/s Specific…

Q: Cold water (cp = 4180 J/kg·K) enters the tubes of a heat exchanger with 2-shell passes and 12-tube…

A: The main objective of this ε-NTU method is to obtain both the exit temperatures of hot and cold…

Q: Cold water (cp = 4180 J/kg⋅K) leading to a shower enters a thin-walled double-pipe counter-flow heat…

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Q: Water enters at 20 C at a rate of 0.1 kg/s in a double-pipe counter flow heat exchanger is to be…

A: Given:Tci=20°Cmc=0.1 Kg/sThi=100°Cmh=0.3 Kg/sU=100 W/m2°CL=14 md=1.4 cmCpw=4.18 KJ/Kg°CCpa=1.01…

Q: In an industrial facility a counter-flow double-pipe heat exchanger uses superheated steam at a…

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Q: The flow rate of hot and cold-water streams running through a parallel flow heat exchanger are 0.19…

A: Given Data Mass flow rate of hot water is : m˙h=0.19 kg/s Mass flow rate of cold water is :…

Q: Air (Cp = 1005 J/kg °C) enters a cross-flow heat exchanger at 10 C at a rate of 3 kg/s, where it is…

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Q: Steam is to be condensed on the shell side of a 1-shell-pass and 8-tube-passes condenser, with 50…

A: Write the given data

Q: ater enters at 25 ℃ at a rate of 0.1 kg/s in a double-pipe counter flow heat exchanger is to be…

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Q: A counterflow double-tube heat exchanger with hot engine oil fluid at inlet and outlet temperatures…

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Q: Cold water (Cp = 4180 J/kg · °C) leading to a shower enters a thin-walled double-pipe counter-flow…

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Q: Water enters at 20 C at a rate of 0.1 kg/s in a double-pipe counter flow heat exchanger is to be…

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Q: Hot oil is to be cooled in a double-tube counter-flow heat exchanger. The copper inner tubes have a…

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Q: Consider a heat exchanger that uses hot air to heat cold water. Air enters this heat exchanger at 20…

A: The specific volumes of water at inlet and exit are taken from the steam table,   v3=vf at 50…

Q: Cold water (cp = 4.18 kJ/kg·K) enters a crossflow heat exchanger at 14°C at a rate of 0.35 kg/s…

A: It is required to determine the heat capacity rate of the hot fluid. It is required to determine…

Q: A double-pipe heat exchanger is constructed of a copper (k = 380 W/m-°C) inner tube of internal…

A: As per given Question  K=380w/m°c hi=700w/m2c ho=1400w/m2c We have to determine thermal resistance…

Q: Water enters at 20 c at a rate of 0.1 kg/s in a double-pipe counter flow heat exchanger is to be…

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Q: A double-pipe parallel-flow heat exchanger is to heat water (cp = 4180 J/kg·K) from 25°C to 60°C at…

A: Given data as per question Cold fluid inlet temperature =  25°C=298 k Cold fluid outlet temperature…

Q: What is the advantage of using heat exchanger in plant designing compared to other heat transfer…

A: Introduction: Heat exchangers are devices that transmit thermal energy between two or more fluids.…

Q: In a parallel-flow, liquid-to-liquid heat exchanger, the inlet and outlet temperatures of the hot…

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Q: Hot oil is to be cooled in a double-tube counter-flow heat exchanger. The copper inner tubes have a…

A: Given that, Writing the Properties of water and oil as follows –

Q: A heat exchanger contains 400 tubes with inner diameter of 23 mm and outer diameter of 25 mm. The…

A: Given : The number of tubes in heat exchanger = 400 The inner diameter = 23 mm The outer diameter =…

Q: A condenser consists of several tubes. The outer diameter of each tube is 2 cm, and the thickness is…

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Q: What is the role of the baffles in a shell-and-tube heat exchanger? How does the presence of baffles…

A: Baffles are flow directing vanes or panels which are used in the heat exchanger. These are designed…

Q: C- Hot engine oil is to be cooled in a double-tube counter-flow heat exchanger. The copper inner…

A: given water @ 52 c , 0.42 kg/s oil @ 95 c , 0.91 kg/s

Q: Water (Cp = 4180 J/kg K) enters the 2.5-cm internal-diameter tube of a double-pipe counter-flow heat…

A: Solution   given data   CP=4180 J/kgK    d=2.5 cm    Twi=17°C     mw=1.8 kg/s     Ts=120°C…

Q: The mass flow rate, specific heat, and inlet temperature of the tube-side stream in a double-pipe,…

A: Given data Below figure dipicts the given data

Q: A parallel flow double-pipe heat exchanger is to heat water from 20°C to 90°C at a rate of 1.4 kg/s.…

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Q: Hot exhaust gases of a stationary diesel engine are to be used to generate steam in an evaporator.…

A: Given data as per question Entrance temperature of exhaust gasses = 5500 c Mass flow rate of gasses…

Q: 11-110 In a one-shell and two-tube heat exchanger, cold water with inlet temperature of 20°C is…

A: Assume that the heat exchanger is completely insulated and the temperature variation occur in 1-D…

Q: The condenser of a room air conditioner is designed to reject heat at a rate of 15,000 kJ/h from…

A: The heat rejection is given as, The related diagram is given as, From the above diagram, the…

Q: A counter-flow double-pipe heat exchanger is to heat water from 30°C to 80°C at a rate of 1.5 kg/s.…

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Q: A shell-and-tube process heater is to be selected to heat water (Cp = 4190 J/kg°C) from 20 °C to 90…

A: Given Data The constant pressure specific heat of the cooling water is: cp=4190 J/kg·°C The…

Q: In a shell-and-tube heat exchanger, water enters at 85°C at the rate of 5.4 kg/s. Engine oil enters…

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Q: Steam 90°C 10. A shell-and-tube process heater is to be selected to heat water (Cp 4190 J/kg-°C)…

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Q: Water enters at 20 ℃ at a rate of 0.1 kg/s in a double-pipe counter flow heat exchanger is to be…

A: Given:Twi=20°Cmw=0.1 Kg/sTai=90°Cma=0.3 Kg/sU=100 W/m2°CL=14 md=1.4 cmcw=4.18 KJ/Kg°Cca=1.01 KJ/Kg°C

Q: Consider a water-to-water counter-flow heat ex-changer with these specifications. Hot water enters…

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Q: Water enters at 20 ℃ at a rate of 0.2 kg/s in a double-pipe parallel flow heat exchanger is to be…

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Q: Cold water (C, = 4180 J/kg.°C) enters the tubes of a heat exchanger with 2-shell passes and 20 tube…

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Q: What are the Difference of a Open Heater to a Closed heat exchanger?

A: Heat exchangers are systems that help to transfer heat between fluids. They are used in both heating…

Q: Water enters at 20 ℃ at a rate of 0.2 kg/s in a double-pipe parallel flow heat exchanger is to be…

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Q: Water (cp = 4180 J/kg·K) enters the 2.5-cminternal- diameter tube of a double-pipe counter-flow heat…

A: Given that,

Q: Water (Cp = 4180 J/kg · °C) enters the 2.5-cm internal-diameter tube of a double-pipe counter-flow…

A: Given: Cp=4180 J/kg°Cdi=2.5 cm = 0.025 mm˙=3 kg/shfg=2203 kJ/kgU = 900…

Q: Water enters at 20 ℃ at a rate of 0.1 kg/s in a double-pipe counter flow heat exchanger is to be…

A: Twi=20°Cmw=0.1 Kg/sTai=90°Cma=0.3 Kg/sU=100 W/m2°CL=14 md=1.4 cm =0.014 mcw=4.18 KJ/Kg°Cca=1.01…

Q: In a processing plant, waste heat is to be recovered from a hot oil stream into a cold water stream…

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Q: 13–122 Consider a water-to-water counter-flow heat ex- changer with these specifications. Hot water…

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Q: air that enters the heat exchanger at 90 ℃ at a rate of 0.3 kg/s. The overall heat transfer…

A: We have to determine outlet temperatures of air

Q: What are the common approximations made in the analysis of heat exchangers?

A: The common approximations given that made during the analysis of heat exchangers, (1) The heat…

Q: Water (Cp = 4180 J/kg-°C) enters the 2.5- cm internal-diameter tube of a double-pipe counter-flow…

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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.