Glycerin (cp=2400 J/kg*K) at 20°C and 1 kg/s is to be heated by ethylene glycol (cp = 2500J/kg*K) at 75°C and the same mass flow rate in a thin-walled double-pipe parallel-flow heatexchanger. If the overall heat transfer coefficient is 380 W/m²*K and the pipe is 75m longand 2.5cm in diameter, determine (a) the rate of heat transfer and (b) the outlettemperatures of the glycerin and the glycol.

To calculate the rate of heat transfer, and outlet temperature of the glycerine and glycolgiven the…

Answered: and 2.5cm in diameter, determine (a)…

and 2.5cm in diameter, determine (a) the rate of heat transfer and (b) the outlet temperatures of the glycerin and the glycol.

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 7.27P

See similar textbooks

Related questions

Q: Determine the components of these reactions if A ex only x and z components of force and B exerts x,…

A: Draw the FBD for the given question.

Q: Ammonia enters the expansion valve of a refrigeration system at a pressure of 10 bar and a…

A: The inlet pressure at the inlet of expansion valve is The inlet temperature at the inlet of…

Q: A steam turbine with rated capacity of 56,400 kW (56,400 kJ/s) operates with steam at inlet…

Q: In a spring-loaded piston-cylinder arrangement shown in Figure P4-57 0.03 m3 of air is contained in…

Q: Data: r=0.25 inch, d=0.4 pig and h=0.5 inch, wi=2.5 inch and w= 1.5 inch. The forces fluctuate…

A: Where:Force = 14 Kips (tension) = 14,000 lbsForce = 5 Kips (compression) = -5,000 lbs (negative sign…

Q: Jet Path A water jet hits a wall and splits into two streams as shown above. The jet carries 3 kg of…

A: Solution:Given data: m1=3 kg/s A2= 2 x 10-3 m2 V2=V3=1…

Q: NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to…

A: To Find:The COP of the refrigerator.Given:The refrigerant is The space temperature is The water…

Q: Problem 1-Closed system isentropic process Internal combustion engines (ICE) use pistons and…

A: Disclaimer:Hello. Since you have submitted multiple questions, we will solve the first one for you.…

Q: 5-20 Choose coordinates x for the displacement of c and clockwise for the rotation of the uniform…

A: The following procedures can be used to address the problem of determining the total moment…

Q: Two 2 kg balls are attached to the ends of a rod. The rod is attached to an axle such that the balls…

Q: 1. Calculate the horizontal (x) component of the reaction (supporting) force (lb) at point A. 2.…

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

Q: One kilogram on a diatomic ideal gas undergoes the following four step process starting at Point A…

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

Q: Draw the shear diagram for the cantilever beam. B) Draw the moment diagram for the cantilever…

Q: 3. For the system shown, determine the magnitude of W that will just prevent motion. 100 KN a=0.15…

Q: The golf ball is hit at A with a speed of v₁ = 44 m/s and directed at an angle of 30° with the…

A: VA=44 m/sand To determine:The distance d

Q: determine the minimum allowable diameter in section B and C.

A: Permissible stress is stress which is produced due to pressure or forces which do not exceed the…

Q: Knowing that at the instant shown the angular velocity of rod BE is 4 rad/s counterclockwise,…

A: Angular velocity of BE= 4 rad/s

Q: Given the angle section below with a 2200 ft lbf bending moment applied 30 degrees off the vertical…

Q: With the following modifications: Change the first 3m length to 5m (the second 3m length stays the…

Q: The compression ratio in an air standard Otto cycle is 9. At the beginning of the compression…

Q: a) Relative and absolute humidity and dew temperature of the atmosphere. b) Absolute humidity and…

A: To calculate the relative, absolute humidity, and dew point temperature of the atmosphere and…

Q: Determine the Prandtl number, Nusselt number, and Reynolds number from the following flow data: Cp =…

A: Determine the Prandtl number, Nusselt number, and Reynolds number from the following flow…

Q: Q1/ Find the diameter of steel rope made from a ductile steel having a maximum stress 1500Kg/cm^2,…

Q: The cars on the amusement-park ride rotate around the axle at A with a constant angular velocity…

A: The angular velocity frame is .The angular velocity of axle is .

Q: The circular disk of radius r = 0.25 m rotates about a fixed axis through point O with the angular…

A: The angular velocity is .The angular acceleration is .The radius is

Q: Slotted links 2 and 3 are driven independently at constant speeds of w2 = 30 rad/s cw and w3 = 20…

A: To solve the given problem, we need to follow these steps:Review the problem statement and equations…

Q: Describe the steps involved in creating a mathematical model for a mechanical system.

Q: f 800 MPa, and a tensile this specimen experienc long? Why or why no

Q: Plz see attached picture. Need force in: member AD Member CD Mamber AB

Q: 2. The forces F, P, and T, all of which act on point A of the bracket as shown in the figure, are…

Q: 3. The compound beam given in the figure is composed of a pair of beams, AB and BC, connected by a…

A: The compound beam given in the figure is composed of a pair of beams, AB and BC, connected by a pin…

Q: The airflow at 1 atm has a free stream velocity and temperature of 5 cm/s and 25°C, respectively.…

A: Heat transfer coefficient:The quantity of heat energy that is moved from one surface to another as…

Q: In the following figure, a machine is installed in the water drainage system. Knowing that the…

Q: 2. Determine the moment reactions at point A. 150 mm 150 mm 400 mm 600 N 60° 30° 500 mm Per pe

A: The magnitude of force is 600 N.The component of force along z-direction = The compoent of force on…

Q: A sign hangs from a rod as shown in the figure. The rod is attached to a wall with a frictionless…

A: Weight of rod (R) = 20 NWeight of sign (S) = 125 N

Q: A steady-flow, well-insulated turbine accepts steam at 4 MPa and 500°C with negligible kinetic and…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: The crankshaft AB turns with a clockwise angular acceleration of 20 rad/s², Fig. 16-31a. Determine…

A: The crankshaft AB turns with a clockwise angular acceleration of 20 rad/s²,Determine the…

Q: please see attached pic need Force for members: BD CD CE

A: A Pratt roof truss is shown. Take P= 9.6 KN.Determine the force in BD, CD, CE member of the Pratt…

Q: The gear ratio shown must transmit 10 horsepower (66000 lb in/s) from its input, which is rotating…

A: For the solution refer below images.

Q: The arm in the figure below weighs 42.5 N. F Ta Fg The force of gravity acting on the arm acts…

A: The arm in the figure below weighs 42.5 NThe force of gravity acting on the arm arts through point A…

Q: A rigid tank with a volume of 0.1402 m³ contains 1 kg of refrigerant-134a vapor at 240 kPa. The…

Q: Calculate the forces acting at pin A, pin B, and pin C. 6 m 5 kN 1.5 m y 1.5 m x OB 3 m 3 m

A: Calculate the forces acting at pin A, pin B, and pin C.

Q: Please work out c and d

Q: Knowing that the angular velocity of rod DE is a constant 20 rad/s clockwise, determine in the…

Q: Consider a highly automated processing plant having an output rate of 1.0 kg/s of product and…

A: Highly automated processing plant capacity

Q: The state of in-plane stress at a point on an element of material is shown. Let a₂ = 55.0 ksi, ay =…

Q: Two electric motors are being considered to drive a centrifugal pump. Each motor is capable of…

A: Given:P = 90 hpMARR = 5%To find:Annual cost of electric power

Q: A cylindrical block of wood which has a dimension of 1 ft long and 3 inches diameter, is placed…

Q: What is the average thermal speed of a 0.3 micrometer polystyrene microsphere at 300K? At T=275K?

A: Diameter of micro sphere, D = 0.3 micrometer = 0.310-6 mRadius of micro sphere, r = D/2 =…

Q: Determine the Prandtl number, Nusselt number, and Reynolds number from the following flow ata: = 0.5…

Concept explainers

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.

Question

Glycerin (cp=2400 J/kg*K) at 20°C and 1 kg/s is to be heated by ethylene glycol (cp = 2500
J/kg*K) at 75°C and the same mass flow rate in a thin-walled double-pipe parallel-flow heat
exchanger. If the overall heat transfer coefficient is 380 W/m²*K and the pipe is 75m long
and 2.5cm in diameter, determine (a) the rate of heat transfer and (b) the outlet
temperatures of the glycerin and the glycol.

Expert Solution

This question has been solved!

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

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1: Introduction

VIEW

Step 2: Calculate heat transfer effectiveness

VIEW

Step 3: exit temperature of glycerine

VIEW

Step 4: rate of heat transfer and exit temperature of glycol

VIEW

Solution

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 5 steps with 28 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

Determine the rate of heat transfer per meter length to a light oil flowing through a 2.5-cm-ID, 60-cm-long copper tube at a velocity of 0.03 m/s. The oil enters the tube at 16C, and the tube is heated by steam condensing on its outer surface at atmospheric pressure with a heat transfer coefficient of 11.3 kW/m K. The properties of the oil at various temperatures are listed in the following table: Temperature, T(C) 15 30 40 65 100 (kg/m3) 912 912 896 880 864 c(kJ/kgK) 1.80 1.84 1.925 2.0 2.135 k(W/mK) 0.133 0.133 0.131 0.129 0.128 (kg/ms) 0.089 0.0414 0.023 0.00786 0.0033 Pr 1204 573 338 122 55
Water (5.0 L/min) is flowing in a tube "D = 3 cm, L= 5 m" and is to be neated from 15°C to 64.0°C by applying a uniform heat flux on the outer surface of the tube by electric resistance heater. What is the convective heat transfer coefficient (W/m .K)? %3D 0.8 If turbulent flow use Dituss-Boetler relation Nu= 0.023 Re Pr. 3 Properties : p= 992.1 kg/m , C,= 4179 J/kg. °C, k = 0.631 WM°C, Pr = 4.32, v = 0.658E-6 m /s Select one
Consider the flow of motor oil (cp=2048 J/kg K) through a copper tube ofthin wall at a rate of 0.3 kg/s. The oil enters the copper tubes at atemperature of 80°C that is cooled by means of water that enters at 20°C. Temperatureoutlet of the oil cannot be higher than 40°C. The convective coefficient ofheat transfer from the oil side is 750W/m2 K and from the water side 350W/m2 K. IfThe outlet temperature of the water is measured at 32°C and a heat exchanger is considered.double tube in parallel. Determine: a) Mass flow rate of the water. b) The difference of log mean temperatures. c) the area of the heat exchanger.
Water (cp=4.182 kJ/kg.K, k=0.6405 W/m.K, Pr=3.57, ν=0.5537x10-6 m2/s, ρ=998 kg/m3) flows through a tube (D=0.5 cm) with an average velocity of 0.2 m/s. The average temperatures of the water at the inlet and outlet cross-sections are 16,21 oC and 78,49 oC, respectively. The uniform heat flux of 0,58 W/cm2 is subjected to the surface of the tube for heating process. Determine the tube length [m].
Engine oil enters a straight tube with a flow rate of 1 kg/s. The tube has a diameter of 5 mm and the surface temperature of the tube is maintained at 150˚C. The engine oil has an inlet temperature 52˚C and it is desired to heat the oil to a mean temperature of 80˚C at the exit of the straight tube. The properties of the engine oil are k = 0.139 W/m.K, Pr = 834, cp = 2072 J/kg.K and μ = 5.62 x 10-2 N.s/m2 Assume the flow is at fully developed region, determine:(a) The required length of the tube. (b) The rate of heat transfers from the tube to the engine oil.
An electric heater heats the inner tube walls of a concentric tube annulus at a rate of 2000 W/m. The inner and outer tube diameters are 25 and 50 mm respectively. Water enters the annular region at 25 ⁰C and leaves at 85 ⁰C. The flow rate of water is 0.04 kg/s and the outer tube wall is insulated. Assuming that fully developed conditions exist at the outlet, the inner tube surface temperature at the outlet will be ?
Water (4.1 L/min) is flowing in a tube "D = 3 cm, L= 5 m" and is to be heated from 15°C to 59.8°C by applying a uniform heat flux on the outer surface of the tube by electric resistance heater. What is the power rating of the ?resistance heater (kW) If turbulent flow use Dituss- Boetler relation Nu= 0.023 Re0.8 .Prn Properties : p = 992.1 kg/m³ , C, = 4179 J/kg.°C, k 0.631 W/m°C, Pr = 4.32, v = 0.658E-6 m²/s
Water enters a 2.5-cm-internal-diameter thin copper tube of a heat exchanger at 15°C at a rate of 0.61 kg/s, and is heated by steam condensing outside at 115°C. If the average heat transfer coefficient is 950 W/m2.K, determine the length of the tube required in order to heat the water to 105°C. (Insert answer for Q (kW), TLMTD (°C) and L (m) ) kW °C m
steam exits the turbine of a steam power plant at 105 F and is to be condensed in a large condenser by cooling water flowing through copper pipes (k = 223 Btu/h-ft-F) of inner diameter 0.5 in. and outer diameter 0.7 in. at an average temperature of 70 F. The heat transfer of vaporization of water at 100F is 1037 Btu/lbm. The heat transfer coefficient are 1500 Btu/h-ft-F on the steam side and 35 Btu/h-ft-F on the water side. Determine the length of the tube required to condense steam at arate of 130 lbm/h.
a one shell and two tube pass heat exchanger, coolant enters the tube at 4.81 kg/s (spread over 72 tubes with each tube being 0.01 m in diameter and 1.95 m length) at an initial temperature of 25 C. Water enters the shell at 2.5 kg/s at an initial temperature of 5 C. The average convection coefficient of the water is known to be 1e4 W/m2.K. What is the overall heat transfer coefficient, assuming no fouling, negligible tube thermal resistance and near-identical inner and outer tube surfaces? What is the actual heat transfer rate? What is the coolant outlet temperature? The coolant properties are Cp = 1040 J/kg.K, μ = 7.65e-4 kg/s.m, k = 0.058 W/m.K and Pr = 14. Assume the water Cp = 4200 J/kg.K.
Air at p = 1 atm enters a thin-walled (D = 5-mm diameter) long tube (L = 2 m) at an inlet temperature of Tm,i = 100°C. A constant heat flux is applied to the air from the tube surface. The air mass flow rate is m = 125 × 10-6 kg/s. If the tube surface temperature at the exit is T, = 160°C, determine the heat rate entering the tube, in W. Evaluate properties at T = 400 K. q= Mi W
Geothermal steam at 172°C condenses in the shell side of a heat exchanger over the tubes through which water flows. Water "C 4201 J/kg.K, k = 0.673 W/m.°C, p = 968.1 kg/m , µ = 3.33E-4 Pa.s, Pr = 2.08" enters the 4-cm-diameter, 9.5m-long tubes at 20°C at a rate of 0.3 kg/s. What is the exit temperature of water “°C"? Assume fully developed flow, if turbulent flow %3D %3D use, Dittus-Boelter equation: Nu = 0.023 Re Pr. us,8 %3D Select one: А. 150.71 B. 139.86 C. 143.40 D. 147.09 Е. 154.18