Thermodynamics heat transfer

1. A thin flat plate is positioned in an air flow of 30 m s-1 . The length of the plate in the direction of the flow is 1.0 m. The width of the plate is 0.5 m. The air temperature is 20 oC. The plate temperature is maintained at 80 oC. Determine the heat transfer rate from the plate if: a) the leading edge is smooth (10 marks) b) the leading edge is rough (10 marks) 2. An air duct heater consists of an aligned array of electrical heating elements in which the longitudinal and transverse pitches are SL =25 mm, ST = 25 mm. There are 5 rows of elements in the flow direction (NL = 5) and 4 elements per row (NT = 4). Atmospheric air with an upstream velocity of 10 m s-1 and a temperature of 25°C moves in cross flow over the elements, which have a diameter of 12 mm, a length of 250 mm and they are maintained at a surface temperature of 300°C. Determine: a) the air-side heat transfer coefficient (8 marks) b) the total rate of heat transfer (6 marks) c) the temperature of air leaving the duct heater (6 marks)

 

“Get 20% OFF on a Similar Assignment!! Place Your Order and Use this Coupon Code: SUPER20”

buy custom essays


Thermodynamics heat transfer was first posted on February 7, 2020 at 4:30 pm.
©2020 “Buy Custom Essays“. Use of this feed is for personal non-commercial use only. If you are not reading this article in your feed reader, then the site is guilty of copyright infringement. Please contact me at ukbestwriting@gmail.com

What Students Are Saying About Us

.......... Customer ID: 12*** | Rating: ⭐⭐⭐⭐⭐
"Honestly, I was afraid to send my paper to you, but splendidwritings.com proved they are a trustworthy service. My essay was done in less than a day, and I received a brilliant piece. I didn’t even believe it was my essay at first 🙂 Great job, thank you!"

.......... Customer ID: 14***| Rating: ⭐⭐⭐⭐⭐
"The company has some nice prices and good content. I ordered a term paper here and got a very good one. I'll keep ordering from this website."

"Order a Custom Paper on Similar Assignment! No Plagiarism! Enjoy 20% Discount"