Docstoc

6 NWRA Annual Conference - Nevada Water Resources Association

Document Sample
6 NWRA Annual Conference - Nevada Water Resources Association Powered By Docstoc
					NWRA Annual Conference




HOW DOES RENEWABLE ENERGY TIE WITH WATER IN
                THE STATE



                 Max Walenciak

            Nevada Geothermal Power

                      1
 NWRA Annual Conference


                                  Distribution of New Geothermal Power
§ Abundant geothermal
  resources

§ Geothermal industry
  established (70’s / 80’s)

§ Strong resurgence (2005)




                              2
Nevada Geothermal Plants and Resource Potential




                        3
NWRA Annual Conference




                     4
Geothermal is the Most Attractive Renewable Energy
Source in the U.S.


   §   Base load power plants
        •   24 hours a day/ 7days a week

   §   High Capacity Factor: 95%
        •   Coal: 85%, Gas: 95%, Wind: 30%, Solar: 25%

        •   No fuel cost / No commodity price risk

        •   Low levelized costs

   §   Established technology
        •   40+ years plants operating in US

   §   No or low emissions

   §   Self replenishing (renewable)



                                                     5
NWRA Annual Conference




                    6
NWRA Annual Conference


   BINARY PLANTS

   •Resource temperature
   from 225°F to 375°F

   •Air Condenser affected by
   dry bulb temperature




                                7
NWRA Annual Conference




                     8
NWRA Annual Conference




                     9
NWRA Annual Conference




                     10
NWRA Annual Conference




                     11
§ NWRA Annual Conference
   NWRA Annual
   Conference
•Water condenser
impacted by wet bulb
temperature

•Water makeup from
ground water or waste
water




                        12
NWRA Annual Conference




                     13
NWRA Annual Conference

•Water make up comes
from condensed geothermal
steam

•May require outside
makeup in summer months
NWRA Annual Conference
     HYBRID COOLING SYSTEM USING AIR COOLED CONDENSER

     EVAPORATION                              FOGGING




                                 15
NWRA Annual Conference

            PARALLEL CONDENSING SYSTEM




                       16
NWRA Annual Conference
 § Hybrid Cooling Systems
 §   Improves Power Generation over ACC

 §   Reduces water useage

 §   Fogging and Evaporation Systems

 •   Not a Major cost adder

 •   Difficult to control

 •   Wind, scaling and corrosion issue

 •   Air flow loss for evaporation

 §   Parallel Condensing System

 •   Utilize both air and water

 •   Higher capital maintenance cost

 •   Better annual performance

 •   Bigger footprint

                                          17
NWRA Annual Conference




                     18
NWRA Annual Conference


§ Conclusions
  • WATER COOLING INCREASES POWER PRODUCTION IN
    SUMMER CONDITIONS AND DURING PEAK LOADS

  • WATER COOLING REDUCES FUEL RATES (GEOTHERMAL
    FLUID CONSUMPTION)

  • WATER IMPROVES OUTPUT PLANNING (PREDICTING DAILY
    LOADS)




                         19
NWRA Annual Conference




                     20

				
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
views:0
posted:9/29/2013
language:Unknown
pages:20