Question: Two 5-ft-square and parallel flat plates are 1 ft apart. Plate A1 is maintained at a temperature of 1540?F and A2 at 460?F. The emittances

Two 5-ft-square and parallel flat plates are 1 ft apart. Plate A1 is maintained at a temperature of 1540?F and A2 at 460?F. The emittances of the plates are 0.5 and 0.8, respectively. Considering the surroundings black at 0 R and including multiple inter-reflections, determine(a) The net radiant exchange between the plates and(b) The heat input required by surface A1 to maintain its temperature. The outer-facing surfaces of the plates are adiabatic.GIVENTwo square parallel flat plates, 1 ft apartTemperature of A1 (T1) = 1540?F = 2000 RTemperature of A2 (T2) = 460?F = 920 REmittances: ε1 = 0.5 ε2 = 0.8Surroundings are black at (T3) = 0R

5 ft E-0.5 T = 2000 R A - 25 ? -0.8 Ag - 4(5 f)(1 t) = 20 f T3 = OR T2 = 920 R Az- 25 f?

Step by Step Solution

★★★★★

3.39 Rating (171 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

The gap between the plates can be considered to be a blackbody square cylindrical surfa... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

66-E-M-E-H-M-T (1909).docx

120 KBs Word File

Students Have Also Explored These Related Mechanical Engineering Questions!

A 1.0-mm-diameter wire is maintained at a temperature of 400C and exposed to a convection environment at 40C with h = 120 W/m2 C. Calculate the thermal conductivity that will just cause an...

A horizontal 2.5 cm-OD tube is maintained at a temperature of 27?C on its outer surface. Calculate the average heat transfer coefficient if saturated steam at 12 kPa is condensing on this...

A house is maintained at a temperature of 20oC by a heat pump pumping heat from the atmosphere. Heat transfer rate through the wall and roof is estimated at 0.6 kW per unit temperature difference...

Two 1.5-m-square, parallel flat plates are 30 cm apart. Plate A 1 is maintained at a temperature of 1100 K and A 2 at 500 K. The emissivities of the plates are 0.5 and 0.8, respectively. Considering...

Air 1000?C flows at 2 m/s flows between two parallel flat plates spaced 1 cm apart. Estimate the distance from the entrance where the boundary layers meet.GIVENAir flows between two parallel flat...

Q 5 . Water at 2 0 C is flowing with velocity of 0 . 5 m s between two parallel flat plates placed 1 cm apart. Determine the distances from the entrance at which the velocity boundary layers ( from...

Water at 20C is flowing with velocity of 0.5 m/s between two parallel flat plates placed 1 cm apart. Determine the distances from the entrance at which the velocity and thermal boundary layers meet....

Determine the rate of heat transfer between two 1 by 1 m parallel flat plates placed 0.2 m apart and connected by re-radiating walls. Assume that plate 1 is maintained at 1500 K and plate 2 at 500...

Air at 20?C flows at 1 m/s between two parallel flat plates spaced 5 cm apart. Estimate the distance from the entrance where the hydrodynamic boundary layers meet.GIVENAir flows between two parallel...

An engineer for an insulation company is testing different materials in an apparatus that consists of two large parallel flat plates spaced 5 cm apart. The inside surfaces of the plates are...

y = 3x + 5y = 2x + 4 Just simple substitution, I would like to learn how so if you could also post with your steps

Protection Alarm Co. made a contract to provide burglar alarm security for Fretwells home. The contract stated that the maximum liability of the alarm company was the actual loss sustained or $50,...

Marriott International's investment in building a content studio, creating TV shows, publishing a number of blogs, producing short films and launching its own travel network are examples of _ _ _ _ _...

Acquisition Cost: An examination of the property, plant, and equipment accounts of James Company, disclosed the following transactions: a. On 1 January 20X4, a new machine was purchased at a list...

Laesecke Company uses budgets to control costs. The May 2016 budget report for the company's packaging department is as follows: The monthly budget amounts in the report were based on an expected...

High Arctic Manufacturing Company produces one product, Kebo. Because of wide fluctuations in the demand for Kebo, the assembly department has significant variations in its monthly production levels....

On January 1, 2017, Abbey acquires 90 percent of Benjamin's outstanding shares. Financial information for these two companies for the years 2017 and 2018 follows: Assume that a tax rate of 35 percent...

What are the two basic methods for translation used globally?

As all of you know full well, college textbooks are expensive. At first, it may seem as though there are few substitutes available for the cash-strapped undergraduate. After all, if your professor...

Upper and lower surfaces of a bus bar are convectively cooled by air at T with hu h1. The sides are cooled by maintaining contact with heat sinks at To, through a thermal contact resistance of Rt,c...

Derive the nodal finite-difference equations for the following configurations. (a) Node m, n on a diagonal boundary subjected to convection with a fluid at T and a heat transfer coefficient h. Assume...

Consider the nodal point 0 located on the boundary between materials of thermal conductivity kA and kB. Derive the finite-difference equation, assuming no internal generation. Material A Ay kA Ax=Ay...

All of the following are elements of Total Preventive Maintenance EXCEPT: Testing and identifying machine parts for replacement before they fail. Making employees responsible for routine minor...

Stock Price at t=0 Shares outstandaing at t=0 Price at t=1 Shares outstanding at t=1 A $11 300 $15 300 B $20 100 $10 200 C $34 400 $40 400 I created a price weighted index made up of stocks A, B and...

1 .A publisher reports that65% 65%of their readers own a particular make of car. A marketing executive wants to test the claim that the percentage is actually different from the reported percentage....