Calculate the heat loss per unit length

Assignment Help Mechanical Engineering

Reference no: EM13946283

Consider the cylindrical, 0.12-m-diameter radiation shield of Example 9.5 that is installed concentric with a 0.10-m-diameter tube carrying steam. The spacing pro- vides an air gap of L = 10 mm.

(a) Calculate the heat loss per unit length of the tube by convection when a second shield of 0.14-m diameter is installed, with the second shield main- tained at 35°C. Compare the result to that for the single shield of the example.

(b) In the two-shield configuration of part (a), the air gaps formed by the annular concentric tubes are L = 10 mm. Calculate the heat loss per unit length if the gap dimension is L = 15 mm. Do you expect the heat loss to increase or decrease?

Reference no: EM13946283

Questions Cloud

Outer surface temperatures and inner cylinder : Derive expressions for the critical Rayleigh numbers associated with the cylindrical and spherical geometries, Rac,crit and Ras,crit, respectively, below which keff is minimized.

Describe the method of balancing chemical equation taking : Describe the Method of balancing chemical equation taking an example.

Which deal would you take : A lottery has provided you with the following options: $350,000 today or $40,000 per year for 10 years. If you can earn 4% on your money indefinitely, which deal would you take

Use captive-product pricing to set the price : It is most typical for producers who use captive-product pricing to set the price of the main product ________ and set ________ on the supplies necessary to use the product.

Calculate the heat loss per unit length : In the two-shield configuration of part (a), the air gaps formed by the annular concentric tubes are L = 10 mm. Calculate the heat loss per unit length if the gap dimension is L = 15 mm. Do you expect the heat loss to increase or decrease?

Are there any potential practical attacks on this protocol : Choose one physical tamper-resistant device application and describe its security-related protocol in full

Analysis for two surface-temperature conditions : Develop an analysis to predict the convection heat transfer rate across the window as a function of pane spacing and determine, under otherwise identical conditions, whether air or car- bon dioxide will yield the smaller rate..

Calculate the mean, mode and median of the table of approved : Prepare a frequency distribution of ungrouped data including cumulative frequency (tally) for the table of approvedCalculate the mean, mode and median of the table of approved

User Account

All Pages