What is the maximum allowable power dissipation per board

Assignment Help Chemical Engineering
Reference no: EM131300690

A vertical array of circuit boards is immersed in quiescent ambient air at T = 17°C. Although the components protrude from their substrates, it is reasonable, as a first approximation, to assume fla plates with uniform surface heat flux q"s. Consider boards of length and width L = W = 0.4 m and spacing S = 25 mm. If the maximum allowable board temperature is 77°C, what is the maximum allowable power dissipation per board?

1204_f9b69c30-9413-4010-b403-0d48e7c09373.png

Reference no: EM131300690

Questions Cloud

Knowledge of functionalism : How would each of these risks impact your event? How could a knowledge of functionalism help you to see the problems before they happen? Where would conflict arise? Who might work at undermining your event? What icons would make the event memorabl..
The continuously comounded zero rates : The continuously comounded zero rates for 0.5 and 1 years are 4% and 5%, respectively. what is the price of a bond that pays $2 every six months and has 1 year to maturity ( Note: par value is $100)? Show your work
Why micromanagement is consider trap that leaders encounter : Which leadership style do you feel would be more beneficial in the long-term: authoritarian or democratic? Explain your answer. Discuss why micromanagement is considered a "trap" that many leaders encounter.
Down payment on their first house : Jim and Ester have saved $25,000 for a down payment on their first house which costs $100,000. The FHA loans for which they qualify requires them to put $10,000 down. A FHA mortgage will be 5.5%. A conventional 30-year mortgage will be 4.5% intere..
What is the maximum allowable power dissipation per board : If the maximum allowable board temperature is 77°C, what is the maximum allowable power dissipation per board?
Critique e business operations from given perspectives : Critique e-business operations from the perspective of making on-line payments, the perspective of customer satisfaction in dealing with an e-business site.
Create a query to determine the total weights : Create the database, including loading the data from the spreadsheet into Access and establishing the Relationships -  Create a query that will select records for customers who had their first pickup in July 2011. Sort into alphabetical order by Bu..
Scholarly activity-research methods : Research how qualitative research is used in your field. Write an essay that describes how qualitative research tools can be used to aid in decision making within your field. Be sure your essay addresses the following questions/topics:
Write a comment about the role of nurses : Write a comment about the role of nurses.The nurse plays an important role in a patient's state of well-being by providing health education to promote a healthy lifestyle. One model that can assist the nurse to educate a person to improve their hea..

Reviews

Write a Review

Chemical Engineering Questions & Answers

  Reaction of coal with steam and oxygen

Coal gasification is carried out at 850 °C and 40 atmospheres pressure, by reaction of coal with steam and oxygen. The empirical formula of the coal is roughly CH0.8S0.013. What materials of construction would you recommend for:

  Demonstrate the principle of the solovay and strassen

Demonstrate the principle of the Solovay and Strassen primality test on the number m = 33 The number m has been made small in this problem to keep the calculations simple. So, do not make use of numbers that "incidentally" have a factor in common ..

  Develop the four equations and describe the meaning

Develop the four equations and describe the meaning of each term.

  Find the decay constant and half-life of the isotope

A freshly prepared sample of a certain radioactive isotope has an activity of 10 mCi. After 4 h, the activity is 8 mCi.

  Determine the synchronous speed in revolutions per minute

Determine the synchronous speed in revolutions per minute and the useful torque in new ton meters of a 200-hp, 60-Hz, six-pole synchronous motor operating at its rated full load (1 hp ≅ 746 W).

  Compute the power factor for zero voltage regulation

Compute the power factor for zero voltage regulation on full load.

  Make a practice hazop study of the plant section

Make a practice HAZOP study of the plant section and add any instrumentation that is needed to develop the full P and I diagram.

  Why fluids are important in chemical engineering

Why fluids are important in chemical engineering - enormous number of materials normally exist as gases or liquids, or can be transformed into such phase and explain systematic description of change in fluid systems, mechanical change

  What is the mass of the volume of combined fuel product

What is the mass of the volume of combined fuel product? What is the total volume of combined fuel allowed on the truck? What is the volume of E100 allowed on the truck? What is the volume of E85 allowed on the truck?

  Dew point of a mixture of hydrocarbons

At a pressure of 10 bar, determine the bubble and dew point of a mixture of hydrocarbons, composition, mol%: n-butane 21, n-pentane 48, n-hexane 31. The equilibrium K factors can be estimated using the De Priester charts in Dadyburjor (1978) or fo..

  Calculate the dew pressure of the solution at 40 °c

Calculate the amount and composition of vapor and liquid when a solution with z1 = 0.45 is flashed to 40 °C, 0.065 bar.

  Performance specifications for an electromechanical device

Develop a set of performance specifications for an electromechanical device to raise and lower the lower leg of a wheelchair user (to prevent edema).

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd