Before being injected into a furnace, pulverized coal is preheated by passing it through a cylindrical tube
Question:
Before being injected into a furnace, pulverized coal is preheated by passing it through a cylindrical tube whose surface is maintained at Tsur = 1000°C. The coal pellets are suspended in an airflow and are known to move with a speed of 3 m/s. If the pellets may be approximated as spheres of I-mm diameter and it may be assumed that they are heated by radiation transfer from the tube surface, how long must the tube be to heat coal entering at 25°C to a temperature of 600°C? Is the use of the lumped capacitance method justified?
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Answer rating: 83% (6 reviews)
KNOWN Spherical coal pellet at 25C is heated by radiation while flowing through a furnace maintained ...View the full answer
Answered By
Lamya S
Highly creative, resourceful and dedicated High School Teacher with a good fluency in English (IELTS- 7.5 band scorer) and an excellent record of successful classroom presentations.
I have more than 2 years experience in tutoring students especially by using my note making strategies.
Especially adept at teaching methods of business functions and management through a positive, and flexible teaching style with the willingness to work beyond the call of duty.
Committed to ongoing professional development and spreading the knowledge within myself to the blooming ones to make them fly with a colorful wing of future.
I do always believe that more than being a teacher who teaches students subjects,...i rather want to be a teacher who wants to teach students how to love learning..
Subjects i handle :
Business studies
Management studies
Operations Management
Organisational Behaviour
Change Management
Research Methodology
Strategy Management
Economics
Human Resource Management
Performance Management
Training
International Business
Business Ethics
Business Communication
Things you can expect from me :
- A clear cut answer
- A detailed conceptual way of explanation
- Simplified answer form of complex topics
- Diagrams and examples filled answers
4.90+
46+ Reviews
54+ Question Solved
Related Book For
Fundamentals of Heat and Mass Transfer
ISBN: 978-0471457282
6th Edition
Authors: Incropera, Dewitt, Bergman, Lavine
Question Posted:
Students also viewed these Mechanical Engineering questions
-
A 9-cm-diameter spherical ball whose surface is maintained at a temperature of 1108C is suspended in the middle of a room at 208C. If the convection heat transfer coefficient is 15 W/m2C and the...
-
A house wall may be approximated as two 1.2-cm layers of fiber insulating board, an 8.0-cm layer of loosely packed asbestos, and a 10-cm layer of common brick. Assuming convection heat-transfer...
-
Pulverized coal pellets, which may be approximated as carbon spheres of radius r o = 1 mm, are burned in a pure oxygen atmosphere at 1450 K and 1 atm. Oxygen is transferred to the particle surface by...
-
Describe the risk assessment approach used for Enterprise Risk Management(ERM) at Worker's Compensation Fund(WCF). How does this approach compare to ISO 31000? Does it consider risks with upside...
-
Mizner, Inc., is a U.S. based MNC with a subsidiary in Mexico. Its Mexican subsidiary needs a one year loan of 10 million pesos for operating expenses. It can borrow pesos at 11% and can use peso...
-
Carefully evaluate: The supply and demand for agricultural products are such that small changes in agricultural supply result in drastic changes in prices. However, large changes in agricultural...
-
The annual premium for a 2,500 square foot home in a medium-sized Midwestern city was \($628\) in 2005with discounts for a home security system, a good claims record, and the combination of home and...
-
Accounting Changes Depreciation Robillard Inc. acquired the following assets in January of 2007. Equipment estimated service life, 5 years; salvage value , $15,000 $465,000 Building, estimated...
-
Please see attachment below and help:. A company can expect that financing in the foreign country will likely have the same effective cost as financing in the home country if: O Interest rate parity...
-
The Texas Jean Company manufactures jeans in the cutting and sewing process. Jeans are manufactured in 100-jean batch sizes. The cutting time is 11 minutes per jean. The sewing time is 8 minutes per...
-
An electronic device, such as a power transistor mounted on a finned heat sink, can be modeled as a spatially isothermal object with internal heat generation and an external convection resistance....
-
A metal sphere of diameter D, which is at a uniform temperature Tj, is suddenly removed from a furnace and suspended from a fine wire in a large room with air at a uniform temperature T and the...
-
Last month, East Coast Power Company, which had been having trouble with cost overruns on a nuclear power plant that it had been building, announced that it was temporarily suspending payments due to...
-
For the third quarter, Micro Tech had gross sales of $315,450, sales returns and allowances of $23,300, and sales discounts of $18,600. What were the net sales (in $)? $
-
What is a mystery shopper service? Why and when should it be used? What topics should managers address with shopper service personnel before they conduct a shopper's visit?
-
What are the key elements of the traditional financial control model? . What are the primary limitations of the traditional financial control model?
-
On January 3, 2020, missiles launched by a U.S. drone struck a vehicle convoy leaving the Baghdad, Iraq airport and killed Iranian General Qasem Soleimani, along with 9 other people, including Iraqi...
-
On December 1 5 , you received your bank statement showing a balance of $ 2 , 2 6 6 . 3 1 . Your checkbook shows a balance of $ 2 , 4 3 1 . 3 9 . Outstanding checks are $ 2 2 5 . 5 0 and $ 3 5 3 . 1...
-
During the depths of the subprime lending crisis in 2008, a major U.S. investment banking firm, Goldman Sachs, required a \($10\) billion bailout from the U.S. governments Troubled Asset Relief...
-
Write a program to move a signed number from smaller register to bigger register. Hint: movzx ax, bl Topic: Data Related Operators and Directives in assembly language
-
Derive Equation 12.31, which is the expression for the mixture fugacity coefficient of component 1 in a binary mixture described by the virial equation. Equation 12.31. In (+) = P RT [B' + y (2B'2 -...
-
Find Vo in the network in Figure P8.25 i2 124. 0020V 20020v j50 2 2 10 Figure P8.25
-
Find Vo in the network in Figure P8.26 i2 125 2 2 4820V j40 4 Vo 1220V Figure P826
-
Find Vo in the network in Figure P8.27 j1o 4 20230V i2 1 4 Figure P8.27
-
Home Content/WEB/240: W X zy Section 5.2 - WEB/240 [Solved] Please see an write a statement that X Search results for 'Cha X +...
-
Interview Notes Chloe is single, a U.S. citizen, and has a valid Social Security number. No one else lives in the household with her. She turned 50 in 2023. Chloe worked full time. Her total income...
-
All cooperatives except one (has, have) been able to show a profit for participating members. Question 6Select one: a. All cooperatives except one have been able to show a profit for participating...
Study smarter with the SolutionInn App