At what value of parasitic power does the addition of pump

Assignment Help Electrical Engineering
Reference no: EM13275124

Consider a l0-plate fuel cell stack at an anode stoichiometry of 1.2 with 20 A current generated in the stack and a stack voltage of 6.0 V. As an engineer, you have a choice to install a recirculation pump to recycle the unused hydrogen from the anode exhaust back into the anode to increase the effective fuel utilization to 100%. However, the pump requires 60 W of parasitic power to operate continuously. Is installation of the pump justified? Explain. At what value of parasitic power does the addition of the pump become unjustified?

Reference no: EM13275124

Questions Cloud

What was the direction of the mugs velocity : In a local bar, a customer slides an empty beer mug down the counter for a refill. What was the direction of the mug's velocity just before it hit the floor
Find the maturity risk premium for the 3-year security : Assume the real risk rate is 3%, and inflation is expected to be 2% for the next 3 years. A 3-year security yields 5.7%. Find the maturity risk premium for the 3-year security.
How many grams of cu(oh)2 will precipitate excess naoh : How many grams of Cu(OH)2 will precipitate when excess NaOH solution is added to 73.0 mL of 0.661 M CuBr2 solution
What is the initial investment : a. What is the initial investment? b. What is the Cash Flow at year 1? c. What is the Cash Flow at year 4? d. Is this a good investment? (hint: Compute NPV)
At what value of parasitic power does the addition of pump : A current generated in the stack and a stack voltage of 6.0 V. As an engineer, you have a choice to install a recirculation pump to recycle the unused hydrogen from the anode exhaust back into the anode to increase the effective fuel utilization t..
Calculate the value of each investment based : How does this affect your answers to parts A and B? What required rates of return would make you indifferent to all three options?
Find magnitude of the current density in a sample of silver : Find the magnitude of the current density in a sample of silver for which σ=6.17x10^7 S/m if: a) The electric field intensity is 1mV/meter. b) The same is a cube 2.5mm on a side having a voltage of 0.4mV between opposite faces.
Calculate the depreciation expense : You are given the following information for Calvani Pizza Co.: sales = $51,000; costs = $21,700; addition to retained earnings = $10,250; dividends paid = $800; interest expense = $4,100; tax rate = 35 percent. Calculate the depreciation expense.
Evaluate the normalization constant for the eigenstates : Find the energy eigenstates for the system. Compute the normalization constant for these eigenstates. What is the boundary condition for this problem. What does this restrict the allowed energies of the system to be? e) What is the degeneracy of t..

Reviews

Write a Review

Electrical Engineering Questions & Answers

  Give subroutine to perform lower-to-upper case conversion

Write and test a program for the EASy68k to input a string from the keyboard, convert all letters to uppercase and echo (output) the new string to the screen. Use a subroutine to perform the lower-to-upper case conversion.

  Find the carrier and intelligence frequency fm transmitter

An FM transmitter delivers to a 75 ohm antenna a signal voltage of V(t) = 1000 sin ( 109t + 4 sin 104t ) Determine: (a) Carrier frequency (b) Intelligence frequency (c) Modulation index (d) Total power in FM signal (e) Carrier power (f) Power in e..

  What does the words leads and lag represent in factor

(1) What does the words leads and lag represent in factor In waveform (2) How would you change the power factor if you needed to

  Explain power dissipation problems

Power Dissipation Problems, A signal generator outputs a sine wave signal with a frequency of 1000 Hz and an rms voltage of 20.0 V. The output of the spectrum analyzer is connected to a 200 ohm resistor.

  What is rms voltage of source in a single loop series

3) What is the RMS voltage of the source in a single loop series circuit if Irms = 1A-30° and Ztotal = 100 65° 4) What is the power dissipated by an electric heater with a resistance of 20? drawing a current waveform of i(t) = 10 sin(60t) Amps

  What is the thickness of the diffusion in microns

If a silicon diffusion is doped with phosphorus (donors) at a concentration of 1.0 x 10^16/cm^3, and has a sheet resistance of 365.7 ohm/cm^2 square, what is the thickness of the diffusion in microns

  Determine the frequencies of aliasing noise

given analog signal : x(t)=8cos(6,000pi)+5cos(14,000pit) t>=0 sampled at rate 12,000 Hz a) sketch the spectorum of the orignal signal and the sampled signal from 0 KHz and 25 KHz.

  Find load current in amps-current through transmission line

a. Convert all the per unit values to a common kVA of 100 and transmission side voltage base of 2500V b. To maintain one per unit voltage at rated load, find the per unit generator voltage needed.

  What is probability that absolute distance btwn two points

Suppose two points P1 and P2 are tossed at random and independently onto a line segment of length L. What is the probability that the absolute distance between the two points does not exceed l.

  Calculate initial voltage on the capacitor if v and i given

The switch in the circuit has been in position a for a long time. At t=0 the switch is moved to position b. A.Calculate the initial voltage on the capacitor if v = 200V , and i = 1.9mA.

  How to illustrate 6-pole stator winding of an ac machine

Use computer graphics/ or by hand to illustrate 6-pole stator winding of an AC machine. For wt = 0 and wt = 180o show the phasor diagram of phase currents, polarity of currents in individual conductors, and the flux paths.

  Explain a sinusoidal voltage has a maximum value

A sinusoidal voltage has a maximum value of 100V, and the value is 10V at t=0. The period is T=1ms. Determine the angular frequency, w, in rad/sec.

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