Estimate the natural convection heat transfer coefficient of the horizontal pipe. The outer surface temperature of the pipe is 80 ° C. The ambient air temperature is 40 ° C. The outer diameter of the pipe is 18 cm. Convection coefficient = Answer W / m² ° C.

Estimate the natural convection heat transfer coefficient of the horizontal pipe. The outer surface temperature of the pipe is 80 ° C. The ambient air temperature is 40 ° C. The outer diameter of the pipe is 18 cm. Convection coefficient = Answer W / m² ° C.

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.

Chapter2: Steady Heat Conduction

Section: Chapter Questions

Problem 2.62P

See similar textbooks

Related questions

Q: Q3- A 7cm diameter tube has circumferential fins of rectangular profile. The fins are constructed of…

A: (1) the no. of fins per meter of length of the tube, N=1m in mm/space between fins=1000/12=83.3 83…

Q: Steam flows through tubes whose outer radius is 2.5 cm and whose wall are maintained at a…

A: given tube whose outer radius is, r= 2.5 cmwall are maintained at a temperature,T=135occonductivity…

Q: Hot water is flowing through a 3.5 cm (1-1/4") schedule 40 steel pipe at a velocity of 1.8 m/s. The…

A: Given:- v=1.8m/s di=3.5cm Ti=110°C k=0.15W/m°C L=15m To find:- Drop in the temperature of the water…

Q: HEAT TRANSFER A mild steel steam pipe with an outer diameter of 11.43 cm and inner diameter of…

Q: A 50-cm-diameter pipeline in the Arctic carries hot oil at 30°C and is exposed to a surrounding…

A: It is clearly shown in the question that, the pipe is subjected to two types of heat transfer…

Q: A glass door is used on a fireplace to reduce exfiltration of room air through the chimney. The…

A: The mean film temperature is The Rayleigh number is

Q: A steam pipe 50 mm diameter and 2.5 m long has been placed horizontally and exposed to still air at…

Q: A transformer that is L=20cm long, 6.2 cm wide, and 5 cm high is to be cooled by attaching a 10 cm ×…

Q: A Deep-sea Diver is wearing a wetsuit in cold water. (Natural convection, radiative transfer is…

A: as per our company policy we have restricted to answer the only first 3 sub parts of the given…

Q: none

Q: 8 A copper hot-water cylinder of length 1-0 m and radius 0-20 m is lagged by 20m of material of…

Q: A long, 20-cm diameter pipe is carrying hot water. The temperature of the air around the pipe is…

Q: Q5B) A steel pipe of 170 mm inner diameter and 190 mm outer diameter with thermal conductivity 55…

Q: There is an equipment that allows to measure the heat transfer in fins with at least three different…

A: Given data: Fins of circular cross-section are considered.The fins are made of aluminum with…

Q: A thin brass pipe, 3 cm in outside diameter, carries hot water at 85°C. It is proposed to place 0.8…

A: Given :- Outside Diameter : 3cm thickness : 0.8 mm

Q: The correlation below is used to calculate the heat transfer coefficients for forced convection…

A: Following is the answer for the question.

Q: Water at 20°C_flows with a velocity of 10m/s over a flat plate which is maintained at 80°C. Find the…

Q: Qs Air at 1 atm and 40°C flows across a 10 cm diameter cylinder at velocity of 40 m/s. The cylinder…

Q: Water at a temperature of 10°C flows at a velocity of 3 m/s across a plate maintained at a uniform…

A: Solution is given below.

Q: A cast iron pipe is used to transfer steam with an inlet temperature of 350 C. Inner radius of the…

Q: A flat-bottom barge is towed on a water surface at 2.57 m/s. The barge is 3.66 m wide and 6.10 m…

A: Given Data The velocity of the barge, V=2.57 m/s Width of the barge, b=3.66m Length of the barge,…

Q: A transformer that is 10 cm long, 6.2 cm wide, and 5 cm high is to be cooled by attaching a 10…

Q: at 5°C is being used to cool apples from an initial temperature of 25° to 10°C. The water flow over…

Q: Q5/ A cylindrical storage steel tank with inside and outside diameters of 550 mm and 535 mm,…

A: In general, there are three modes by which heat gets transferred from one place to another. The…

Q: Convection. A thin 100 cm long and 10 cm wide horizontal plate is placed in a large tank full of…

Q: atural convection heat coefficient for vertical stainless pipe, outer diameter 100 mm, length 0.25…

A: given : outer diameter=100mm length of pipe=0.25m T=125 C Temperature of air=30 c

Q: Copper fins, 2.1 cm long and 2.1 mm in diameter, are attached to a base plate at 75 °C. A fan blows…

Q: A cast iron pipe is used to transfer steam with an inlet temperature of 300 C. Inner radius of the…

Q: Air at 20-C blows over a hot plate 50 by 75 cm maintained at 250-C. The convection heat- transfer…

A: T0=20°CA= 50×75 cm2A=.375 m2Tw=250 °Ch=25 Wm2°C Heat transfer rate Q=hAs∆T

Q: A transformer that is 10 cm long, 6.2 cm wide, and 5 cm high is to be cooled by attaching a 10…

Q: Air with velocity 42.0m/s flows over 1.70 mm diameter wire, what is the heat transfer coefficient…

Q: The upper surface of a large horizontal plate 4 m high is maintained at 55°C and exposed to…

Q: A 20 cm thick slab of aluminums (k = 230 W/mK) is placed in contact with a 15 thick stainless-steel…

A: Given Data Thickness of slab is : L1=20 cm=0.2 m Thermal conductivity of aluminum is : kal=230…

Q: To cool hot oil, an engineer has suggested that the oil be pumped through a pipe submerged in a…

Q: A square flat plate with a side length of 0.65 m is maintained at Tw 100°C. The plate is exposed to…

A: The rate of heat transfer given up by the plate is 1075.5 Watt.

Q: 400 circumferential fins of rectangular profile (k = 386 W/m oC) are installed on a tube having a…

Q: 165mm W/m?-K ulated with several materials, and convection on the inside and outside of the pipe is…

Q: Air at 25 ° C blows over the hot steel plate whose surface temperature is maintained at 150 ° C. The…

A: Given data: The temperature of the air is T∞=25°C The surface temperature of the plate is Ts=150°C…

Q: 400 circumferential fins of rectangular profile (k = 386 W/m °C) are installed on a tube having a…

Q: Water flows over a heated plate as shown below. The plate length is 0.17 m and its boundary…

Q: change in pressure. The electrical components receive 0.5 kW of electrical power. The rate of energy…

A: Write the equation of rate of energy at steady state. Here, Q̇CV represents the heat transfer rate,…

Q: 5.0-cm-diameter cylinder is heated to a temperature of 200°C, and air at 30 °C forced across it at a…

Q: A vertical pipe 90 mm diameter and 2.5 m height is maintained at a constant temperature of 125 o The…

Q: Air at 25 ° C blows over the hot steel plate whose surface temperature is maintained at 250 ° C. The…

A: Given data as per question Temperature of air =250c Hot steel plate whose surface temperature is=…

Q: cylindrical fuel element for a gas-cooled nuclear reactor, the heat generation rate within the fuel…

Q: Pin fins are provided to increase the heat transfer from a hot surface. The perimeter of each fin is…

A: Arrangement 2 will have higher heat transfer rate.

Q: Q4/A fine wire having a diameter of (1*10* m) is placed in airstream at (18 °C) and a flow velocity…

A: Answer: The hear loss per unit length is 34.2 Watts.

Question

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

Step 2

Step 3

Step 4

Step 5

Step by step

Solved in 5 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

The heat transfer coefficient for a gas flowing over a thin float plate 3-m long and 0.3-m wide varies with distance from the leading edge according to hc(x)=10x1/4Wm2K If the plate temperature is 170C and the gas temperature is 30C, calculate (a) the average heat transfer coefficient, (b) the rate of heat transfer between the plate and the gas, and (c) the local heat flux 2 m from the leading edge. Problem 1.18
3.10 A spherical shell satellite (3-m-OD, 1.25-cm-thick stainless steel walls) re-enters the atmosphere from outer space. If its original temperature is 38°C, the effective average temperature of the atmosphere is 1093°C, and the effective heat transfer coefficient is , estimate the temperature of the shell after reentry, assuming the time of reentry is 10 min and the interior of the shell is evacuated.
2.38 The addition of aluminum fins has been suggested to increase the rate of heat dissipation from one side of an electronic device 1 m wide and 1 m tall. The fins are to be rectangular in cross section, 2.5 cm long and 0.25 cm thick, as shown in the figure. There are to be 100 fins per meter. The convection heat transfer coefficient, both for the wall and the fins, is estimated to be K. With this information determine the percent increase in the rate of heat transfer of the finned wall compared to the bare wall.
An electrical transmission line of 1.2-cm diameter carries a current of 200 amps and has a resistance of 310-4 ohm per meter of length. If the air around this line is at v, determine the surface temperature on a windy day, assuming a wind blows across the line at 33 km/h.
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
Estimate the natural convection heat transfer coefficient of the horizontal pipe. The outer surface temperature of the pipe is 100 ° C. The ambient air temperature is 35 ° C. The outer diameter of the pipe is 15 cm. Convection coefficient = W / m² ° C.
Estimate the natural convection heat transfer coefficient of the horizontal pipe. The temperature of the outer surface of the pipe is 120 ° C. The ambient air temperature is 40 ° C. The outer diameter of the pipe is 18 cm. Convection coefficient = ..... W / m² ° C.
Estimate the natural convection heat transfer coefficient of the horizontal pipe. The temperature of the outer surface of the pipe is 120 ° C. The ambient air temperature is 40 ° C. The outer diameter of the pipe is 18 cm. Convection coefficient = Answer W / m² ° C.
A 50-cm-diameter pipeline in the Arctic carries hot oil at 30◦C and is exposed to a surrounding temperature of −20◦C. A special powder insulation 5 cm thick surrounds the pipe and has a thermal conductivity of 7 mW/m · ◦C. The convection heat-transfer coefficient on the outside of the pipe is 9 W/m2 · ◦C. Estimate the energy loss from the pipe per meter of length. (Please give step-by-step solution)
Find the minimum amount of diameter for the insulation of a spherical water tank? Radius of the tank is 10 m, thermal conductivity is 25 W/(m^2*K) and convective coefficient is 5 W/(m*K) 8 m not sufficient information 10 m 20 m 15 m
A 50-cm-diameter pipeline in the Arctic carries hot oil at 30°C and is exposed to a surrounding temperature of - 20 degrees * C A special powder insulation 5 cm thick surrounds the pipe and has a thermal conductivity of 7 mW/m °C. The convection heat-transfer coefficient on the outside of the pipe is 9 W / (m ^ 2) °C. Estimate the energy loss from the pipe per meter of length.
A 50-cm-diameter pipeline in the Arctic carries hot oil at 30°C and is exposed to a surrounding temperature of −12°C. A special powder insulation 5 cm thick surrounds the pipe and has a thermal conductivity of 7 mW/m°C. The convection heat transfer coefficient on the outside of the pipe is 9 W/m2°C. Estimate the energy loss from the pipe per meter of length.