Cold-Climate Solar Domestic Water Heating Systems: Life-Cycle Analyses and Opportunities for Cost Reduction

Jay Burch, Jim Salasovich, Tim Hillman

Research output: Contribution to conferencePaperpeer-review

11 Scopus Citations

Abstract

To determine if the goal of 50% reduction in the cost of saved energy (Csav) is attainable and prioritize research and development (R&D) for cold-climate solar domestic water heaters (SDWH), life-cycle analyses were done with hypothesized lower-cost components in glycol, drainback, and thermosiphon systems. Balance-of-system (BOS) measures include replacing conventional metal components with polymeric versions, and system simplification. With all BOS measures in place, Csav could be reduced just over 50% with a low-cost, selectively-coated, glazed polymeric collector, and slightly under 50% with either a conventional selective metal-glass or a non-selective glazed polymer collector. The largest percent reduction in C sav comes from replacing conventional pressurized solar storage tanks and metal heat exchangers with un-pressurized polymer tanks with immersed polymer heat exchangers, which could be developed with relatively low-risk R&D.

Original languageAmerican English
Pages2409-2414
Number of pages6
StatePublished - 2005
EventSolar World Congress 2005: Bringing Water to the World, Including 34th ASES Annual Conference and 30th National Passive Solar Conference - Orlando, FL, United States
Duration: 6 Aug 200512 Aug 2005

Conference

ConferenceSolar World Congress 2005: Bringing Water to the World, Including 34th ASES Annual Conference and 30th National Passive Solar Conference
Country/TerritoryUnited States
CityOrlando, FL
Period6/08/0512/08/05

Bibliographical note

For preprint version see NREL/CP-550-37748.

NREL Publication Number

  • NREL/CP-550-39703

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