Recovered per kilogram of water passing through the system

Reference no: EM13286728

At Hoover Dam the difference in elevation from lake level to the stream below the generator is approximately equal to 750ft. With 100 percent efficient machines, how many kilowatt-hours can be recovered per kilogram of water passing through the system?

The solutions manual for this book shows the following work:

System; the water path through the dam, from inlet to outlet, steady flow

=-.62Wh/kg=-.00062kWh/kg=-2.8*10^-4kWh/lbm

This is negative because it is work flowing out of the system.

This could be the right answer but they seem to pull that -.62Wh/kg out of nowhere. I'll give 5 stars to whoever can answer this problem with a good explanation for how they came to their answer.

Reference no: EM13286728

Questions Cloud

Problems decoding online messages : Have you ever experienced problems decoding Online messages (e.g. facebook, using text messaging, over e-mail etc.) What can you do to reduce the ambuiguity online or mediated, or messages?

What is a binomial system of nomenclature : What is a binomial system of nomenclature , and why is it used ? Explain the important contributions microorganisms make in the earth's ecosystems. Trace the pathway of light from its source to the eye, explaining what happens as it passes through th..

What are current driving forces of online dating industry : What are the current driving forces of the online dating industry? Are they favorable or unfavorable? Why?

Define the term categorical imperative : Define the term categorical imperative and give at least three examples of categorical imperatives that you believe in. Why is it important for you and others to adhere to those categorical imperatives you listed? Do you believe most people would agr..

Recovered per kilogram of water passing through the system : At Hoover Dam the difference in elevation from lake level to the stream below the generator is approximately equal to 750ft. With 100 percent efficient machines, how many kilowatt-hours can be recovered per kilogram of water passing through the syste..

Melting temperature-elastic modulus-thermal expansion : Make a plot of bonding energy versus separation distance for magnesium and titanium. identify the features on the plot that correspond to melting temperature (Tm), elastic modulus (E) and thermal expansion. Be sure your plot is neat and accurately sc..

Risk-free rate-monthly payments has elapsed : Suppose that the risk-free rate is currently 9% per annum (quoted as an APR). You read of a strange security that offers a risk-free payoff of $10 per month for the next 5 years. Then, exactly one year after the final $10 payment, the investment will..

Common reasons why project estimates are often inaccurate : Discuss why the WBS is considered to be the most important tool of the project manager. Discuss common reasons why project estimates are often inaccurate.

Final temperature and pressure of the steam : A 0.5 kg mass of steam at 800k and 1Mpa is contained in a rigid vessel . the steam is cooled to the saturated vapor state. show the process on a t-v diagram. determine the volume of the vessel and the final temperature and pressure of the steam ?

User Account

All Pages