| Description |
1 online resource (14 p.) : col. ill., col. map |
| Series |
NREL/CP ; 550-43305 |
|
Conference paper (National Renewable Energy Laboratory (U.S.)) ; 550-43305.
|
| Type Of Report |
Conference paper. |
| Note |
Title from title screen (viewed August 5, 2008). |
|
"July 2008." |
|
"To be presented at the 2008 ACEEE Summer Study on Energy Efficiency in Buildings Pacific Grove, California August 17-22, 2008." |
| Summary |
Using transpired solar collectors to preheat ventilation air has recently become recognized as an economic alternative for integrating renewable energy into commercial buildings in heating climates. The collectors have relatively low installed costs and operate on simple principles. Theory and performance testing have shown that solar collection efficiency can exceed 70% of incident solar. However, implementation and current absorber designs have adversely affected the efficiency and associated economics from this initial analysis. The National Renewable Energy Laboratory has actively studied this technology and monitored performance at several installations. A calibrated model that uses typical meteorological weather data to determine absorber plate efficiency resulted from this work. With this model, an economic analysis across heating climates was done to show the effects of collector size, tilt, azimuth, and absorptivity. The analysis relates the internal rate of return of a system based on the cost of the installed absorber area. In general, colder and higher latitude climates return a higher rate of return because the heating season extends into months with good solar resource. |
| Bibliography |
Includes bibliographical references (p. 14). |
| Funding |
DE-AC36-99-GO10337. WW991005. |
| Subject |
Solar heating -- Computer simulation.
|
|
Architecture and energy conservation -- Research.
|
|
Solar collectors.
|
| Added Author |
Kozubal, Eric.
|
|
National Renewable Energy Laboratory (U.S.)
|
| Gpo Item No. |
0430-P-04 (online) |
| Sudoc No. |
E 9.17:NREL/CP-550-43305 |
|
