ENERGY BUZZ!Challenge:  

Make  power  plants  &  related  processes  more  ef3icient  

Current  Situation:  Solar  Thermal  for  electricity  generation.  High  capital  cost.  Long  

payback  period.      

Our  Solution:  

A  HYDRO-­‐SOLAR  ‘SMART’  GRID  

Abhishek  Gupta  |  Rachit  Kansal  |  Siddharth  Pant  

Our Idea: Why is it different?!

6-­‐40%  

75-­‐93%  

Conventional  Electricity  Generation:    

Our  idea:  

EfLiciency    

Hot  Transfer  Fluid   Hot  Water  Higher  Flow  Rate  

Hot  Water   Storage  &  Use  Dist.  Network  

Parabolic Troughs!

Distribution Network!

Storage Tank(s)!

Hot Water Line ~700C!

HYDRO-SOLAR SMART GRID!

Case Study: Projected Financial Benefits!

Hillcrest  Population   13000  

%  of  plant  used   5.0  

Payback  period   3  yrs  

Total  Plant  Cost   $2.77m  

San  Diego  Population   1.33M  

No.  of  plants   4  

Payback  period   4  yrs  

Total  Plant  Cost   $297m  

Current  Costs   $534m  

One  storage  tank  can  support  ≈152  households.  

4  plants  around  San  Diego  can  provide  hot  water  to  3500  

industries  and  334500  houses  Expansion  Opportunities  

•  Centralized  distribution  system  in  all  states  by  2025  

•  De-­‐pressurize  to  create  steam  and  sell  up  north  

•  Have  one  plant  handle  capacity  of  multiple  cities  

•  Re-­‐utilizing  waste  heat  from  industry  for  3inancial  rewards  

Potential Concerns & Next Steps!

§  Availability  of  persistent  water  sources  

§  Heat  loss  §  Maintenance  cost  for  

distribution  network  §  Resistance  to  change  in  

infrastructure  

§  Combine  Hydro  Solar  Smart  

Grid  with  existing  water  pipeline  in  cities  

§  Invest  in  insulation  for  distribution  

§  Extension  of  network  to  high-­‐load  areas  

POTENTIAL  CONCERNS   NEXT  STEPS  

Appendix 1 : Cost Analysis at Hillcrest and San Diego!

The  Plant   Hill  Crest   San  Diego  

Cost  of  Parabolic  Trough  ($  per  square  m)   Area  of  Plant   Total  Cost   Area  of  Plant   Total  Cost  

295   8242.92   2431661.4   656680.9   193720871.4  Maintenance  Cost  ($/panel)   Number  of  Panels  Required   Total  Cost   Number  of  Panels  Required   Total  Cost  

22.8   9813   223736.4   781763   17824196.4  Cost  of  Pump  ($)   Number  of  Pumps   Total  Cost   Number  of  Pumps   Total  Cost  

796   10   7960   2000   1592000       Total  Cost  ($M)   2.6633578   Total  Cost  ($M)   213.1370678  

Distribution  Network   Hill  Crest   San  Diego  Cost  of  Storage  Tank  (5000  gal)  ($)   Number  of  Tanks   Total  Cost   Number  of  Tanks   Total  Cost  

4000   28   112000   750   84000000  Cost  of  Pipeline  per  km  ($)   Length  of  Piping   Total  Cost   Length  of  Piping   Total  Cost  

141.3   6   847.8   248   35042.4  Cost  of  Pump  ($)   Number  of  Pumps   Total  Cost   Number  of  pumps   Total  cost  

796   0   0   50   39800       Total  Cost  ($M)   0.1128478   Total  Cost  ($M)   84.0748424       Total  System  Cost  ($M)   2.7762056   Total  System  Cost  ($M)   297.2119102  

Appendix 2: Hot Water Use by occupancy !

Appendix 3: Solar Trough Costs !

Appendix 4: Solar Trough costs over time!

Appendix 5: Water temperature distribution !

Appendix 6: References !

¤  http://eprints.iisc.ernet.in/35741/1/Solar.pdf  

¤  http://data.un.org/Data.aspx?d=EDATA&f=cmID%3aST  

¤  http://www.nationmaster.com/red/country/us-­‐united-­‐states/ene-­‐energy&all=1-­‐  Steam  &  Hot  Water  Consumption  for  entire  country  

¤  http://www.utsandiego.com/news/2012/Dec/25/san-­‐diegos-­‐13-­‐biggest-­‐industries-­‐and-­‐what-­‐they-­‐pay/-­‐  San  Diego’s  Biggest  Industries  

¤  http://wims.unice.fr/xiao/solar/diy-­‐en.pdf  -­‐  size  of  parabolic  trough  

¤  http://eprints.iisc.ernet.in/35741/1/Solar.pdf-­‐  Economics  of  solar  troughs