A composite wall separates combustion gases nbspat 2600degc, Ask an Expert

Engineering

A composite wall separates combustion gases at 2600°C from a liquid coolant at 100°C, with gas- and liquid-side convection coefficients of 50 and 1000

(a) Sketch the equivalent thermal circuit corresponding to steady-state conditions. In variable form, label appropriate resistances, temperatures, and heat fluxes.

(b) Under steady-state conditions for which the chip heat dissipation is qc" = 30,000 W/m2, what is the chip temperature?

(c) The maximum allowable heat flux, qc",m, is deter- mined by the constraint that the chip temperature must not exceed 85°C. Determine qc",m for the fore- going conditions. If air is used in lieu of the dielec- tric liquid, the convection coefficient is reduced by approximately an order of magnitude. What is the value of qc",m for ho = 100 W/m2 · K? With air cool- ing, can significant improvements be realized by using an aluminum oxide circuit board and/or by using a conductive paste at the chip/board inter- face for which Rt", c = 10-5 m2 · K/W?

View complete question

Mechanical Engineering, Engineering

Category:- Mechanical Engineering
Reference No.:- M91618235

Have any Question?Write your Review or question?

Related Questions in Mechanical Engineering

Problem -a long pipe od 1413 mm id 1318 mm kp 20 wmk

Problem - A long pipe (OD = 141.3 mm, ID =131.8 mm, k p = 20 W/m.K) supplies hot pressurized liquid water at 400 K to a heater in a factory. The pipe has an insulation thickness of 100 mm. A new efficient heater replaces ...

Fluid mechanics assignment - finite control volume analysis

Fluid Mechanics Assignment - Finite Control Volume Analysis and Dimensional Analysis Q1. The wind blows through a 7ft × 10ft garage door opening with a speed of 5 ft/s as shown in the figure. Determine the average speed, ...

Heat transfer and combustionyou will need graph paper a

HEAT TRANSFER AND COMBUSTION You will need graph paper, a calculator, a copy of Appendix 1 from lesson HTC - 4 - 2 and access to steam tables to answer this TMA. 1. A fuel gas consists of 75% butane (C 4 H 10 ), 10% prop ...

Assignment - machine learning for signal processingproblem

Assignment - Machine Learning for Signal Processing Problem 1: Instantaneous Source Separation 1. As you might have noticed from my long hair, I've got a rock spirit. However, for this homework I dabbled to compose a pie ...

Problem on shaft -assuming no frictional losses a torque of

Problem on Shaft - Assuming no frictional losses, a torque of T = 750lb·in is applied through the shaft of gear F in order to drive the roller chain at point B at a constant speed. The chain sprocket has a pitch diameter ...

Life cycle assessmentfor your chosen service eg white

LIFE CYCLE ASSESSMENT For your chosen service (e.g. white board markers), identify two alternatives of getting the service (e.g. brand A, brand B). Choose the most environmentally friendly option by conducting life cycle ...

Assignment -q1 explain the difference between the

Assignment - Q1. Explain the difference between the metacentric height of a ship during 'Partially Afloat condition and 'Free Floating' condition; aid a sketch to support your answer. Q2. With the aid of sketches, explai ...

Fluid mechanics assignment - viscous flow in pipesq1 as

Fluid Mechanics Assignment - Viscous Flow in Pipes Q1. As shown in the figure below, water "bubbles up" 3 in. above the exit of the vertical pipe attached to three horizontal pipe segments. The total length of the 0.75-i ...

1 explain the term critical equipment and provide two clear

1. Explain the term "critical equipment" and provide two clear examples of machinery which falls into this category on board a twin screw motor vessel. 2. Explain the process of Charpy lmpact Testing including sample mar ...

Expansion processes of a perfect gasassignment1 attend the

Expansion Processes of a Perfect Gas Assignment: 1. Attend the laboratory class and complete the lab tests according to the supervisor's requirement. Students will not allowed to submit their report if they do not come t ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Mechanical Engineering Expert