In a parallel flow heat exchanger, hot fluid enters the heat exchanger at a temperature of 150°C and a mass flow rate of 3 kg/s. The cooling medium enters the heat exchanger at a temperature of 30°C with a mass flow rate of 0.5 kg/s and

In a parallel flow heat exchanger, hot fluid enters the heat exchanger at a temperature of 150°C and a mass flow rate of 3 kg/s. The cooling medium enters the heat exchanger at a temperature of 30°C with a mass flow rate of 0.5 kg/s and

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter7: Forced Convection Inside Tubes And Ducts

Section: Chapter Questions

Problem 7.54P

See similar textbooks

Related questions

Q: Explain Torsional Moment with example?

A: The torsional moment, also known as twisting moment, is a couple that acts in a plane parallel to th...

Q: 19-5. The impact wrench consists of a slender 1-kg rod AB which is S80 mm long, and cylindrical end ...

A: Given Data: The mass of the slender is: m = 1k g. The length of the rod is: L= 580 mm The diameter ...

Q: Determine the moments of inertia of the shaded area shown with respect to the x and y axes.

A: Diagram of the shaded area with their measurements are given as, Due to uniformity about x’ and y’,...

Q: Five separate force-couple systems act at the corners of a piece of sheet metal that has been bent i...

Q: Steam expands in a turbine at a mass flowrate of m˙ =33Mg/h, entering at 8 MPa, 500°C and 96 m/s, ...

A: The properties of steam at inlet and exit of steam from steam table Mass flow rate

Q: P39. If column AB is made from high strength pre-cast concrete and reinforced with four 20 mm diamet...

A: Given data: Load applied , P = 350 kN. Diameter of steel rods, d = 20 mm Length , l = 3m Calculat...

Q: 14-35. When the 150-lb skier is at point A he has a speed of 5 ft/s. Determine his speed when he rea...

A: Given data as per the question Weight of skier = 150 lb Skier speed at point A= 5 ft/s

Q: The position of boom ABC is controlled by the hydraulic cylinder BD . For the loading shown, determi...

A: Free-body diagram of the boom ABC is given as, On using Sine Rule in triangle BCD,

Q: A 10-mm-diameter rod has a modulus of elasticity of E = 100GPa. If it is 4 m long and subjected to a...

A: Given: The diameter of the rod is d=10 mm The length of the rod is L=4 m The axial load on the rod i...

Q: Determine how much heat can be stored in a 5-m3 storage space using (a) glaubers salt undergoing a p...

A: (a). Given data For glaubers salt the melting point temperature and heat of fusion are as follows: ...

Q: Why is work done a scalar quantity?

A: Physical work is obtained as dot product of force and displacement. Since force and displacement are...

Q: Poisson's ratio is defined as:

Q: The solid shaft is fixed to the support at C and subjected to the torsional loadings. Determine the ...

A: The torque acting at A is given as : Polar moment of inertia is calculated as :

Q: Discuss behavioral concerns in establishing and implementing a standard cost system

A: Standard cost system is implemented by any company due to check the profitability of an organisati...

Q: In Figure 1, a 600-N force is applied to the bracket at A. (a) Determine the x- and y- components of...

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If y...

Q: Nitrogen gas is compressed from 80 kPa and 27°C to 480 kPa by a 10-kW compressor. Determine the mass...

A: Given: The initial pressure of the nitrogen gas in the compressor is P1=80 kPa The final pressure of...

Q: 16-106. Member AB has the angular motions shown. Determine the velocity and acceleration of the slid...

A: The velocity of the point B can be determined as, The acceleration of the point B can be determined...

Q: 10-7. The copper pipe has an outer diameter of 40 mm and an inner diameter of 37 mm. If it is tightl...

A: Given data: The outer diameter of the copper pipe is do=40 mm. The inner diameter of the copper pip...

Q: I1-50. Determine the maximum tensile and compressive bending stress in the beam if it is subjected t...

A: Given data: Moment , M = 6 kNm Considering cross sectional view of the given figure.

Q: Refrigerant-134a is expanded isentropically from 600 kPa and 70°C at the inlet of a steady-flow turb...

A: Given Data: The inlet pressure of the refrigerant R-134a is P1 = 600 kPa. The inlet temperature of ...

Q: 16-3. A picture is taken of a man performing a pole vault, and the minimum radius of curvature of th...

A: Given: The radius of curvature, ρ = 4.5 m The diameter of the pole, d = 40 mm The modulus of elastic...

Q: Gear B supplies 15 kW of power, while gears A, C and D withdraw 6 kW, 4 kW and 5 kW, respectively. I...

A: Given data as per question Power of gear B =15 KW Power of gear A =6 KW Power of gear C =4 KW Power ...

Q: Consider uniform water flow in a wide brick channel of slope 0.4°. Determine the range of flow depth...

A: Step 1: The channel bed slope (S0) is given as: The roughness coefficient (n) of stream can be obta...

Q: Your second customer wants to determine the required electrical power, which will be used to pump wa...

Q: Why is the stress analysis of a non-prismatic beam generally very difficult toperform?

A: For a prismatic member(a member having uniform cross section throughout its length),the value of str...

Q: For what purpose is a torsion test performed?

A: The torsion test is used to determine the shear properties of the material. In this testing, the spe...

Q: Is the maximum shear stress theory is based on the idea of slipping that occurs in ductile failure?

A: The maximum shear stress theory also known as Guest and Tresca's theory states that the failure of a...

Q: drag is 125 kN and the flight path angle is 6°. Determine the angle of attack and the thrust require...

A: Given that, The steady-state diagram is showing below,

Q: Determine whether the force-and-couple system shown can be reduced to a single equivalent force R . ...

A: The position vector of DA is, The length DA is, The position vector of EA is, The length EA is,

Q: Answer all the points, please

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If y...

Q: For bacteriological testing of water supplies and in medical clinics, samples must routinely be incu...

A: (a) The heat is taken as Q that is used to fuse the wax. So, the mass of wax is written as There wi...

Q: calculate equivalent resistance?

A: Consider the following figure: Let I be the current supplied. Beyond point A the three resistances ...

Q: Air in the accompanying piston-cylinder device is in equilibrium at 190 oC.The mass of the hanging w...

A: Draw the figure.

Q: A freezer is maintained at 20°F by removing heat from it at a rate of 75 Btu/min. The power input to...

A: The data given is, Lower temperature, TL = 20°F = (20 + 460) °R = 480 °R Higher temperature, TH = 7...

Q: 10-45. The rotating flywheel-and-shaft, when brought to a sudden stop at D, begins to ascillate cloc...

A: Given data: Arc length, s = 6mm Radius of the wheel, R = 75mm Shaft inner dia, d = 24 mm Shaft outer...

Q: The total drag due to air friction on a jet airplane traveling at 900 km/h is 35 kN. Knowing that th...

A: According to the problem, the speed of the airplane is 900 km/h. Calculate the value of the speed of...

Q: When a capillary tube of small diameter D is inserted into a container of liquid, the liquid rises t...

A: Write the dimensions of the given parameters.

Q: Packages are thrown down an incline at A with a velocity of 1 m/s. The packages slide along the surf...

A: Given data: *The velocity of the package incline at A is VA=1 m/s. *The velocity of the package on t...

Q: For the beam and loading shown, (a) draw the shear and bending-moment diagrams, (b) determine the ma...

A: Convert UDL into point load and loading at DC into point load and a Moment Determine Reactions at A...

Q: (III) You are lying on a beach, your eyes 20 cm above the sand. Just as the Sun sets, fully disappea...

A: Given data: *The initial height of the eyes from the sand is h1=20 cm=0.2 m. *The height of the eye ...

Q: Knowing that at the instant shown the angular velocity of bar AB is 15 rad/s clockwise and the angul...

A: Given AB Angular velocity = 15 rad/s EF Angular velocity = 10 rad/s To find The angular velocity of ...

Q: Determine the vertical displacement of joint B. Each A992 steel member has a cross-sectional area of...

A: Given data: *The cross sectional area of each member is A=2 in2. *The modulus of elasticity of the...

Q: principle of Inverter air conditioner and energy saving.

A: An inverter air conditioner consists of a compressor such that the speed of the compressor can be al...

Q: A well-sealed room contains 60 kg of air at 200 kPa and 25°C. Now solar energy enters the room at an...

A: Given Data: The mass of air in the room is: m=60 kg The solar power entering the room is: Ps=0.8 kJ...

Q: Water flowing in a wide horizontal channel approaches a 20-cm-high bump with a velocity of 1.25 m/s ...

A: Given Data: The upstream velocity is V1 = 1.25 m/s The upstream depth of flow is y1 = 1.8 m. The he...

Q: Knowing that the hole has a diameter of 9 mm, determine (a) the radius rf of the fillets for which t...

A: Write the expression of the radius of the hole. Write the expression of the effective width of the ...

Q: Q3/B: The position of a particle along a straight line is given by(S = 0.3t³ – 2.7t² + 4. 5t) m, whe...

Q: A rigid container equipped with a stirring device contains 2.5 kg of motor oil. Determine the rate o...

A: Given: The mass of the motor oil, m = 2.5 kg The heat transferred to the oil, Q = 1 W The power give...

Concept explainers

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.

Question

In a parallel flow heat exchanger, hot fluid enters the heat exchanger at a
temperature of 150°C and a mass flow rate of 3 kg/s. The cooling medium enters the
heat exchanger at a temperature of 30°C with a mass flow rate of 0.5 kg/s and

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 steps with 5 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

Water flowing in a long, aluminum lube is to be heated by air flowing perpendicular to the exterior of the tube. The ID of the tube is 1.85 cm, and its OD is 2.3 cm. The mass flow rate of the water through the tube is 0.65kg/s, and the temperature of the water in the lube averages 30C. The free-stream velocity and ambient temperature of the air are 10m/sand120C, respectively. Estimate the overall heat transfer coefficient for the heat exchanger using appropriate correlations from previous chapters. State all your assumptions.
Consider a shell-and-tube water-to-water heat exchanger with identical mass flow rates for both the hot- and cold-water streams. Now the mass flow rate of the cold water is reduced by half. Will the effectiveness of this heat exchanger increase, decrease, or remain the same as a result of this modification? Explain. Assume the overall heat transfer coefficient and the inlet temperatures remain the same.
Why does a “mixed” or “unmixed” fluid arrangement influence heat-exchanger performance?
A cross-flow heat exchanger with both fluids unmixed has an overall heat transfer coefficient of 200 W/m2·K, and a heat transfer surface area of 400 m2. The hot fluid has a heat capacity of 40,000 W/K, while the cold fluid has a heat capacity of 80,000 W/K. If the inlet temperatures of both hot and cold fluids are 80°C and 20°C, respectively, determine the exit temperature of the cold fluid.
Under what conditions can a counter-flow heat exchanger have an effectiveness of one? What would your answer be for a parallel-flow heat exchanger?
Hot water at 60℃ is cooled to 36℃ through the tube side of a 1–shell pass and 2-tube passesheat exchanger. The coolant is also a water stream, for which the inlet and outlet temperaturesare 7℃ and 31℃, respectively. The overall heat transfer coefficient and the heat transfer areaare 950 W/m2 K and 15 m2 , respectively. Calculate the mass flow rates of hot and cold waterstreams in steady operation. (Answers: 3.63 kg/s for both stream)
A cross-flow heat exchanger with both fluids unmixed has an overall heat transfer coefficient of 200 W/m2·K, and a heat transfer surface area of 400 m2. The hot fluid has a heat capacity of 40,000 W/K, while the cold fluid has a heat capacity of 80,000 W/K. If the inlet temperatures of both hot and cold fluids are 80°C and 20°C, respectively, determine (a) the exit temperature of the hot fluid and (b) the rate of heat transfer in the heat exchanger.
Explain how the maximum possible heat transfer rate ???? in a heat exchanger can be determined when the mass flow rates, specific heats, and the inlet temperatures of the two fluids are specified. Does the value of Q.max depend on the type of the heat exchanger?
A counterflow double-tube heat exchanger with hot engine oil fluid at inlet and outlet temperatures of 190°C and 60°C, respectively, and a flow rate of 0.65 kg/s. While cold engine oil at a flow rate of 1.05 kg/s has an exit temperature of 149°C and Cp-1.84 kJ/kg.K. It is known that the overall heat transfer coefficient is 305 W/m².K. Determine the heat transfer surface area of the heat exchanger.
How does a cross-flow heat exchanger differ from a counter-flow one? What is the difference between mixed and unmixed fluids in cross-flow?
Ethanol is vaporized at 78°C (hfg = 846 kJ/kg) in a double-pipe parallel-flow heat exchanger at a rate of 0.03 kg/s by hot oil (cp = 2200 J/kg·K) that enters at 120°C. If the heat transfer surface area and the overall heat transfer coefficients are 6.2 m2 and 320 W/m2·K, respectively, determine the outlet temperature and the mass flow rate of oil using (a) the LMTD method and (b) the «-NTU method.
A two-fluid heat exchanger has inlet and outlet temperatures of 65 and 40°C for the hot fluid and 15 and 30°C for the cold fluid. Can you tell whether this exchanger is operating under counterflow or parallel-flow conditions? Determine the effectiveness of the heat exchanger.