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<br />3501
<br />
<br />CONTENTS-Continued
<br />
<br />Table
<br />
<br />Page
<br />
<br />4 Support pond requirements ................,......,...,.".,.,......... 13
<br />5 Operating characteristics and production capabilities for solar-
<br />pond-coupled desalination plants at Danby Dry Lake..... ,...,....... " 19
<br />6 Solar pond powerplant operating characteristics and economic
<br />
<br />para meters ...".........,.............",..,.......,....,.."...,. 23
<br />7 Solar pond powerplantcosts (mid-1981 dollars) ..........."...,.."...,. 24
<br />8 Alternative powerplant costs (mid-1981 dollars) .........."......"..... 25
<br />9 Economic benefits of electric power generation
<br />(47,5-km' solar pond at Danby Dry Lake) ... ,.....,...., , ,...'...,..... 26
<br />10 Solar-pond-coupled desalination plant operating characteristics
<br />and economic parameters .,..,.."...,...,.....,.'....'...,.......', 27
<br />11 Economic benefits of single-purpose solar-pond-coupled
<br />desalination (membrane and low-temperature distillation processes) ..,. 28
<br />12 Allocation of costs for multipurpose HTMED desalination systems (based
<br />on Separable Costs/Remaining Benefits method of cost allocation) 31
<br />13 Economic comparison of single-purpose and multipurpose projects
<br />(50-Mgal/d HTMED plant with 8300 mg/L feed and
<br />75 percent recovery) "...................,.......,.,.......,.....,.. 32
<br />
<br />Appendix E
<br />
<br />E1 RO desalination costs (intermediate load powerplant
<br />at 35 percent plant factor) .,..,....,...,..........'.,...............' E3
<br />E2 RO desalination costs (baseload powerplant at 70 percent plant factor) .... E4
<br />E3 HTMED desalination costs (intermediate load powerplant at 35 percent
<br />plant factor! .,.,...,...........,....'....,.....,...'..,......,...... E5
<br />E4 HTMED desalination costs (baseload powerplant at 70 percent
<br />
<br />pia nt factor) ".,...."..,..'.....,.......,.............,..."....". E6
<br />
<br />FIGURES
<br />
<br />Figure
<br />
<br />1 Proposed salinity control/coal transport project. . . . . . . . . , ,. . . . . , . . , , . . . . , 2
<br />2 Solar pond power generation concept ,...'"..,.."..,.',..'...,'....',. 4
<br />3 Solar pond cross section ...,.,...,..".,.,......,.,.,....,."..,...,,',. 5
<br />4 Temperature and continuous power profiles for Danby Dry La~e
<br />(1 O-km' solar pond with 50-MW base load power module) '...,..,...... 7
<br />5 Comparison of significant variables affecting
<br />solar pond performance (1 O-km' solar pond
<br />at Danby Dry Lake) . . . . . . , ' . , . . . . , , . . . , . , . ' , , , . , . . , , , , , , " , , . . , , . . . . . 9
<br />6 Representative solar pond mass balances .".....",.,.,...".."..,'.'. 11
<br />7 Upper-convecting zone salt balance, . ' . . , . . . . , , , . . . ' . . , . . . . ., . . . . . . , , . ., 14
<br />8 Evaporation pond area needed to support solar
<br />pond expansion and maintenance .',.,.',.....,."..,..."."'..".,, 14
<br />9 Solar-pond-coupled desalination system ",..,."..,..,.,......".,.,.., 15
<br />1 0 Multiple stage RO with reject staging ....",.",."...,..",. ,.."..". 16
<br />11 RO pressure vessel with spiral membrane elements. , , ' . , . . . . . ,. . , . . , , . " 17
<br />12 RO pressure vessel with hollow-fine fiber membrane elements """"'" 18
<br />13 HTMED plant with horizontal effects,. ,......, , , , , ,... " ..' ,..,.., "" '. 20
<br />14 HTMED plant with vertically stacked effects ,.....,....,'....,.."...,.', 20
<br />15 Solar-pond-coupled desalination system with a second-stage
<br />brine concentrator "...."..,.,....,...,.",."..."..".. """'" 21
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<br />iv
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