Abstract
In FY99, Solar Heating and Lighting set the goal to reduce the life-cycle cost of saved-energy for solar domestic hot water (SDHW) systems in mild climates by 50%, primarily through use of polymer technology. Two industry teams (Davis Energy Group/SunEarth (DEG/SE) and FAFCO) have been developing un-pressurized integral-collector-storage (ICS) systems having load-side heat exchangers, and beganfield-testing in FY04. DEG/SE's ICS has a rotomolded tank and thermoformed glazing. Based upon manufacturing issues, costs, and poor performance, the FAFCO team changed direction in late FY04 from an un-pressurized ICS to a direct thermosiphon design based upon use of pool collectors. Support for the teams is being provided for materials testing, modeling, and system testing. New ICS systemmodels have been produced to model the new systems. A new ICS rating procedure for the ICS systems is undergoing testing and validation. Pipe freezing, freeze protection valves, and overheating have been tested and analyzed.
Original language | American English |
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Number of pages | 5 |
State | Published - 2005 |
Event | 2004 DOE Solar Energy Technologies Program Review Meeting - Denver, Colorado Duration: 25 Oct 2004 → 28 Oct 2004 |
Conference
Conference | 2004 DOE Solar Energy Technologies Program Review Meeting |
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City | Denver, Colorado |
Period | 25/10/04 → 28/10/04 |
Bibliographical note
Presented at the 2004 DOE Solar Energy Technologies Program Review Meeting, 25-28 October 2004, Denver, Colorado. Also included in the proceedings available on CD-ROM (DOE/GO-102005-2067; NREL/CD-520-37140)NREL Publication Number
- NREL/CP-550-37106
Keywords
- heat-exchanges
- integral-collector-storage (ics)
- life-cycle cost
- PV
- thermosiphon