14 replies to this topic

[fessy]

My name is fessy and i am an undergraduate of chemical engineering. I need someone to help me with this problem as i dont understand it. i have attached the document. I need to solve it before the 16th of march, 2012. I have tried to solve it myself but am getting nowhere. Many thanks and looking forward to your reply

Attached Files

•  Tidal and Hydro.pdf   119.41KB   22 downloads

Edited by fessy, 07 March 2012 - 07:27 AM.

[breizh]

Fessy ,
Tell us what you have done and probably someone will help . We are not going to do your homework .
Hope you understand
Breizh

[Shivshankar]

Hi Kayrichardson,

Please be specific, which part of assignment you are not able to do. Attach your calculation worked copy, then we might able to help you as stated by Breizh.

Regards
Shivshakar

[breizh]

http://www.engineeri...wer-d_1359.html

*To start consider this resource .

For Better understanding you should google :Hydropower generation & Hydropower calculation.

** for Tidal power generation
http://en.wikipedia....ower_generation

Breizh

Edited by breizh, 08 March 2012 - 02:13 AM.

[Shivshankar]

Hi Fessy and Kay,

Part 1 ( Use all parameters (Data) given)
Q1. (i) First you calculate the power generation in Watts, then you multiply with generating period then you get the dialy energy generation.
Power Generation in Watts (P) =(Density of water (Rho)*Acceleration due to gravity (g)*Volumetric generating flow rate(Vt)*(Operated head between lower and upper reservoir(H)- Head loss of Water pipe(L))*Efficeicy(E)) watts.
Here Efficiency(E)=Generating efficiency(ng) times Turbine efficiency(nt).
The daily energy generation=generating period*above calculated power (Watts Hours/day)
This will be your energy output.

ii) Calculate same way the daily energy consumption for the pump( first calculate power and then energy consumption).
Power Generation in Watts (P) =(Density of water (Rho)*Acceleration due to gravity (g)*Volumetric generating flow rate(Vp)*(Operated head between lower and upper reservoir(H)- Head loss of Water pipe(L))*Efficeicy(E)) watts.
Here Efficiency(E)=Pump efficiency(np) times Motor efficiency(nm).
The daily energy consumption by pump=Pumping period* Power generation (Watts Hours/day)
Now
Here you calculate Energy input.

iii) Turn around efficiency= Turbine -Generatoor Energy / Pump-Motor energy (Percentage)

Note: Use head loss in water 5 % (while calculating)

Q2) let me know if you can solve this?

Part 2 is easy you can do yourself?


I hope this will help you, If i mistook somewhere please let me know.

Regards
Shivshankar

[fessy]

Dear Shivshankar,

Thanks for the guideline for question 1 (i, ii, iii). I have managed to get my answers. For question 2 am not too sure what to do. can you pls help. Look forward to your reply

Fessy

Attached Files

•  Solution *.pdf   7.32MB   7 downloads

Edited by fessy, 16 March 2012 - 09:39 AM.

[Shivshankar]

Hi fessey,

Can you please upload your copy of answers calculated, so i can self check my answers too.

Q2, You have to get PE= Rho*S*g*R2

Where Rho= Density

you can use Mass-Volume equation m=Rho* Volume

Volume V=SR

So m=Rho*S*R

then you multiply by centre of gravity both side by (gR/2), you get

m*g*R/2 = Rho*S*R*gR/2

Hence PE=Rho*S*R2

Please do keep, copy of your calculations.

Regards
Shivshankar

[fessy]

Dear Shivshankar,

Please find attached the solution you have requested for the tidal calculations. I will be sending you another set of question again if you don't mind. Thanks

Fessy

Attached Files

•  Solution ***.pdf   7.31MB   8 downloads

[fessy]

Dear Shivshankar,
Here is another calculation on sustainable energy processes. This is under hydrogen/future scenario. Can you have a look at it for me. I have attached the document. Also i have attached the solution of the tidal power calculation to the last message i sent to you. Look forward to your reply. Thanks

Fessy

[fessy]

Dear Shivshankar,

Here is another calculation on sustainable energy processes. This is under hydrogen/future scenario. Can you have a look at it for me. I have attached the document. Also i have attached the solution of the tidal power calculation to the last message i sent to you. Look forward to your reply. Thanks

Fessy

Attached Files

•  Hydrogen_Future Scenarios .pdf   77.01KB   9 downloads

[Shivshankar]

<sub>Fessy,

Thanks for prompt reply, you did good job by putting the solution you got. In this way our young engineers can go through our complete thread and get knowledge via cheresources.

For further question on sustainable energy, you can go thorugh below link, you can also download lecture notes on sustainable energy.

http://ocw.mit.edu/c...s-and-readings/

I hope this will help you for further questions . Hope to see new questions from you soon:)

Thanks & Regards
Shivshankar</sub>

[fessy]

Dear Shivshankar,
I will try and solve the new question i attached to the message i sent you. If you can try and for k through it as well and then we can compare the calculation on the solution. Yea thanks for the link. Look forward to your reply. Thanks

Fessy

[fessy]

Dear Shivshankar,
Have you had a look at the new question i sent and attached to you yet. Hydrogen/Future scenario question (calculation questions). Look forward to your reply.

Fessy

[Shivshankar]

Fessy,

I hope you know fundamentals of chemistry like mole and stoichiometry fundamentals.
Refer below link if you want to learn basics of mole and stoichiometry.

http://faculty.smu.e...20Stoich-07.pdf

The general stoichiometric reaction is
CnHm = n C +m/2 H2
(In your case for compounds C,H,O and N, apply for 4 compounds)

This following links will help you to solve your question

1) http://www.ukerc.ac....fileId=1505.pdf
2) http://www.ourenergy...FromBiomass.pdf
3)http://shgr.unlv.edu...arch_5_2004.pdf

Regards
Shivshankar