Consider a 150-W incandescent lamp. The filament of the lamp is 5-cm long and has a diameter

Question:

Consider a 150-W incandescent lamp. The filament of the lamp is 5-cm long and has a diameter of 0.5 mm. The diameter of the glass bulb of the lamp is 8 cm. Determine the heat flux, in W/m²,

(a) On the surface of the filament

(b) On the surface of the glass bulb,

(c) Calculate how much it will cost per year to keep that lamp on for eight hours a day every day if the unit cost of electricity is $0.08/kWh.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Heat And Mass Transfer Fundamentals And Applications

ISBN: 9780073398181

5th Edition

Authors: Yunus Cengel, Afshin Ghajar

See More Books

Question Posted: Sep 10, 2023 03:05 AM

See More Questions

Consider a power transistor that dissipates 0.2 W of power in an environment at 30°C. The transistor is 0.4 cm long and has a diameter of 0.5 cm. Assuming heat to be transferred uniformly from...
Why do you believe the Deming Chain Reaction does not terminate with Increased Profits? Would this contradict the basis of Demings philosophy?
The profits associated with producing Q for Nash Enterprises are ( = 20Q - Q2, and marginal benefits are MB = 20 - 2Q. Pollution damages (costs) associated with its production are D = 10Q; the...
Some rocks or bricks contain small air pockets in them and have a spongy structure. Assuming the air spaces form columns of an average diameter of 0.006 mm, determine how high water can rise in such...
Keys printing plans to issue a $1,000 par value, 20-year noncallable bond with a 7.00% annual coupon, paid semiannually. The company's marginal tax rate is 40.00%, but Congress is considering a...
Please provide answers in excel with formulas. Calculate the following variances and indicate whether each variance is favorable or unfavorable: 1.5. Volume Variance 1.6. Total Variance Expected...
Why is dynamic modeling based on objects, but not classes?
Merck & Co. declared dividends (dollars in Millions) of $3,250.4 (2008), $3,310.7 (2007), and $3,318.7 (2006). Cash payments for dividends reported on the statement of cash flows for the three year...
Determine whether these are valid arguments. a) If x is a positive real number, then x is a positive real number. Therefore, if a is positive, where a is a real number, then a is a positive real...
A sudden increase in the demand for smoke detectors has left Acme Alarms with insufficient capacity to meet demand. The company has seen monthly demand from its retailers for its electronic and...
What are the mechanisms of energy transfer to a closed system? How is heat transfer distinguished from the other forms of energy transfer?
A 15-cm-diameter aluminum ball is to be heated from 80C to an average temperature of 200C. Taking the average density and specific heat of aluminum in this temperature range to be = 2700 kg/m 3 and...
Determine the quark content of these particles: A meson with charge e composed of up and/or down quarks and/or antiquarks.
1 . Why is scientific rigor important? How is the rigor for qualitative research different than quantitative? 2 . Describe phenomenological, grounded theory, ethnography, and exploratory research...
Compute the value that optimists and pessimists respectively attach to a zero-coupon treasury bond that promises to pay 1 Euro at maturity T. Call these values Vor and Ves. Use exponential disounting.
You are 22 years old, have saved up $40,000, and have a goal of being a millionaire by age 50.You intend to make monthly contributions into your investment account each month. You estimate you can...
Current forecasts are for ABCCompany to pay dividends of $2, $2.44, and $5.30 over the next three years, respectively. At the end of three years you anticipate selling your stock at a market price of...
d) Calculate the expected return, in percent, for each asset assuming you buy the asset at the market price in t = 0 and you hold it until t = 2 when the final payoff is realized.
Construct a condence interval for p1 - p2 at the given level of condence. x1 = 804, n1 = 874, x2 = 892, n2 = 954, 95% condence.
Differentiate. y = ln(3x + 1) ln(5x + 1)
Use the Goal Seek spreadsheet at the end of the chapter to find the pH of 1.00 L of solution containing 0.030 mol HA (pK a = 2.50) and 0.015 mol NaA. What would the pH be with the approximations [HA]...
Why doesnt water dissociate to produce 10 -7 M H + and 10 -7 M OH - when some HBr is added?
Calculate the pH of (a) 1.0 10 -3 M HBr; (b) 1.0 10 -2 M KOH.
for 20 years. Then you are able to increase the contribution to $240 per month for another 20 years. Given a 8.0 percent interest rate, what is the value of your retirement plan after 40 years?
You observe that the inflation rate in the United States is 1.5 percent per year and that T-bills currently yield 2.0 percent annually. Use the approximate international Fisher effect to answer the...
The accompanying table provides the inflation rate in the year 2005 and the average inflation rate over the period 20062019 for eight different countries. Country Inflation rate in 2005 Average...

Consider a 150-W incandescent lamp. The filament of the lamp is 5-cm long and has a diameter

Question:

Filament d = 0.5 mm L = 5 cm -D = 8 cm

Step by Step Answer:

Lets calculate the heat flux at different locations for the 150W incandescent lamp a Heat Flux on the Surface of the Filament The heat flux QA on the ...View the full answer

Heat And Mass Transfer Fundamentals And Applications

Students also viewed these Engineering questions