Chemical Engineering Exam > Chemical Engineering Questions > A 50 mm X 50 mm iron bar 0.4 m long is conne...
Start Learning for Free
A 50 mm X 50 mm iron bar 0.4 m long is connected to the walls of two heated reservoirs, each at 120°C. The ambient air temperature is 35°C and the convective heat transfer coefficient is 17.4 W/m2-K. Calculate the rate of heat loss from the bar. The thermal conductivity of iron is 52W/m-K.
- a)88
- b)89
Correct answer is between '88,89'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
A 50 mm X 50 mm iron bar 0.4 m long is connected to the walls of two ...
Because of symmetry, we would consider half-length of the bar (figure).
View all questions of this test
P = 2(a+b) = 2(50 + 50) = 200 mm = 0.2 m
A = 50 mm X 50 mm = 2500 mm2 X 10-6
= 25 X 10-4m2
= 5.174m-1
ml = 5.174 X 0.2 = 1.0348
Tanh ml = 0.776
= 5.174 X 52 X 0.0025 X (120 - 35 ) X 0.776
= 44.37 W
Rate of heat loss from the bar is
Most Upvoted Answer
A 50 mm X 50 mm iron bar 0.4 m long is connected to the walls of two ...
Given Data:
Length of the bar (L) = 0.4 m
Cross-sectional area of the bar (A) = (50 mm)² = 0.0025 m²
Temperature of the heated reservoirs (T1) = 120°C
Ambient temperature (T∞) = 35°C
Convective heat transfer coefficient (h) = 17.4 W/m²-K
Thermal conductivity of iron (k) = 52 W/m-K
Formula:
Rate of heat transfer through convection (qconv) = h × A × (T1 - T∞)
Rate of heat transfer through conduction (qcond) = k × A × (T1 - T∞)/L
Rate of heat loss from the bar (q) = qconv + qcond
Calculation:
qconv = 17.4 × 0.0025 × (120 - 35) = 0.72525 W
qcond = 52 × 0.0025 × (120 - 35)/0.4 = 5.56375 W
q = 0.72525 + 5.56375 = 6.289 W
Therefore, the rate of heat loss from the bar is 6.289 W, which is between 88 and 89 in rounding off the answer to two decimal places.
Length of the bar (L) = 0.4 m
Cross-sectional area of the bar (A) = (50 mm)² = 0.0025 m²
Temperature of the heated reservoirs (T1) = 120°C
Ambient temperature (T∞) = 35°C
Convective heat transfer coefficient (h) = 17.4 W/m²-K
Thermal conductivity of iron (k) = 52 W/m-K
Formula:
Rate of heat transfer through convection (qconv) = h × A × (T1 - T∞)
Rate of heat transfer through conduction (qcond) = k × A × (T1 - T∞)/L
Rate of heat loss from the bar (q) = qconv + qcond
Calculation:
qconv = 17.4 × 0.0025 × (120 - 35) = 0.72525 W
qcond = 52 × 0.0025 × (120 - 35)/0.4 = 5.56375 W
q = 0.72525 + 5.56375 = 6.289 W
Therefore, the rate of heat loss from the bar is 6.289 W, which is between 88 and 89 in rounding off the answer to two decimal places.
|
Explore Courses for Chemical Engineering exam
|
|
Similar Chemical Engineering Doubts
A 50 mm X 50 mm iron bar 0.4 m long is connected to the walls of two heated reservoirs, each at 120°C. The ambient air temperature is 35°C and the convective heat transfer coefficient is 17.4 W/m2-K. Calculate the rate of heat loss from the bar. The thermal conductivity of iron is 52W/m-K.a)88b)89Correct answer is between '88,89'. Can you explain this answer?
Question Description
A 50 mm X 50 mm iron bar 0.4 m long is connected to the walls of two heated reservoirs, each at 120°C. The ambient air temperature is 35°C and the convective heat transfer coefficient is 17.4 W/m2-K. Calculate the rate of heat loss from the bar. The thermal conductivity of iron is 52W/m-K.a)88b)89Correct answer is between '88,89'. Can you explain this answer? for Chemical Engineering 2024 is part of Chemical Engineering preparation. The Question and answers have been prepared according to the Chemical Engineering exam syllabus. Information about A 50 mm X 50 mm iron bar 0.4 m long is connected to the walls of two heated reservoirs, each at 120°C. The ambient air temperature is 35°C and the convective heat transfer coefficient is 17.4 W/m2-K. Calculate the rate of heat loss from the bar. The thermal conductivity of iron is 52W/m-K.a)88b)89Correct answer is between '88,89'. Can you explain this answer? covers all topics & solutions for Chemical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A 50 mm X 50 mm iron bar 0.4 m long is connected to the walls of two heated reservoirs, each at 120°C. The ambient air temperature is 35°C and the convective heat transfer coefficient is 17.4 W/m2-K. Calculate the rate of heat loss from the bar. The thermal conductivity of iron is 52W/m-K.a)88b)89Correct answer is between '88,89'. Can you explain this answer?.
A 50 mm X 50 mm iron bar 0.4 m long is connected to the walls of two heated reservoirs, each at 120°C. The ambient air temperature is 35°C and the convective heat transfer coefficient is 17.4 W/m2-K. Calculate the rate of heat loss from the bar. The thermal conductivity of iron is 52W/m-K.a)88b)89Correct answer is between '88,89'. Can you explain this answer? for Chemical Engineering 2024 is part of Chemical Engineering preparation. The Question and answers have been prepared according to the Chemical Engineering exam syllabus. Information about A 50 mm X 50 mm iron bar 0.4 m long is connected to the walls of two heated reservoirs, each at 120°C. The ambient air temperature is 35°C and the convective heat transfer coefficient is 17.4 W/m2-K. Calculate the rate of heat loss from the bar. The thermal conductivity of iron is 52W/m-K.a)88b)89Correct answer is between '88,89'. Can you explain this answer? covers all topics & solutions for Chemical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A 50 mm X 50 mm iron bar 0.4 m long is connected to the walls of two heated reservoirs, each at 120°C. The ambient air temperature is 35°C and the convective heat transfer coefficient is 17.4 W/m2-K. Calculate the rate of heat loss from the bar. The thermal conductivity of iron is 52W/m-K.a)88b)89Correct answer is between '88,89'. Can you explain this answer?.
Solutions for A 50 mm X 50 mm iron bar 0.4 m long is connected to the walls of two heated reservoirs, each at 120°C. The ambient air temperature is 35°C and the convective heat transfer coefficient is 17.4 W/m2-K. Calculate the rate of heat loss from the bar. The thermal conductivity of iron is 52W/m-K.a)88b)89Correct answer is between '88,89'. Can you explain this answer? in English & in Hindi are available as part of our courses for Chemical Engineering.
Download more important topics, notes, lectures and mock test series for Chemical Engineering Exam by signing up for free.
Here you can find the meaning of A 50 mm X 50 mm iron bar 0.4 m long is connected to the walls of two heated reservoirs, each at 120°C. The ambient air temperature is 35°C and the convective heat transfer coefficient is 17.4 W/m2-K. Calculate the rate of heat loss from the bar. The thermal conductivity of iron is 52W/m-K.a)88b)89Correct answer is between '88,89'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
A 50 mm X 50 mm iron bar 0.4 m long is connected to the walls of two heated reservoirs, each at 120°C. The ambient air temperature is 35°C and the convective heat transfer coefficient is 17.4 W/m2-K. Calculate the rate of heat loss from the bar. The thermal conductivity of iron is 52W/m-K.a)88b)89Correct answer is between '88,89'. Can you explain this answer?, a detailed solution for A 50 mm X 50 mm iron bar 0.4 m long is connected to the walls of two heated reservoirs, each at 120°C. The ambient air temperature is 35°C and the convective heat transfer coefficient is 17.4 W/m2-K. Calculate the rate of heat loss from the bar. The thermal conductivity of iron is 52W/m-K.a)88b)89Correct answer is between '88,89'. Can you explain this answer? has been provided alongside types of A 50 mm X 50 mm iron bar 0.4 m long is connected to the walls of two heated reservoirs, each at 120°C. The ambient air temperature is 35°C and the convective heat transfer coefficient is 17.4 W/m2-K. Calculate the rate of heat loss from the bar. The thermal conductivity of iron is 52W/m-K.a)88b)89Correct answer is between '88,89'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice A 50 mm X 50 mm iron bar 0.4 m long is connected to the walls of two heated reservoirs, each at 120°C. The ambient air temperature is 35°C and the convective heat transfer coefficient is 17.4 W/m2-K. Calculate the rate of heat loss from the bar. The thermal conductivity of iron is 52W/m-K.a)88b)89Correct answer is between '88,89'. Can you explain this answer? tests, examples and also practice Chemical Engineering tests.
|
|
Explore Courses for Chemical Engineering exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup