摘要:

The specific example of a 400 bed hotel is investigated to determine how the shadow effect due to adjacent collectors, arising through a limited roof area, is reflected in the behaviour of the annual ƒ as a function of the collector surface. The study is performed for two different locations of the hotel, Almeria, Spain, and Freiburg, Germany, which reveals the dependence of the latitude on the shadow effect. It is illustrated, that the effect of shading is substantially affected by the monthly distribution of the occupation of the hotel. The optimal collector surface in the presence of the shadow effect is then determined from economic aspects by seeking the surface yielding the maximum life-cycle savings.

ISSN:0142-5919    

DOI:10.1080/01425918208909884

出版商:Taylor & Francis Group    

年代:1982

数据来源: Taylor

摘要:

The Japanese solar photovoltaic program milestone, technological development plans, and their structures in the “Sunshine Project” are introduced. Also described is the present status of the solar photovoltaic research and development projects.

ISSN:0142-5919    

DOI:10.1080/01425918208909885

出版商:Taylor & Francis Group    

年代:1982

数据来源: Taylor

摘要:

Steady-state solar and infrared radiation heat exchange in the cavity receiver of a solar tower is presented in the form of a mathematical model. The inside cavity walls consist partly of tubes containing air as a heat carrier. The distribution of tube wall temperatures, air temperature, and the heat flux density along the tubes are calculated at different times of day for different seasons. The efficiency of solar and infrared radiation exchange in the cavity is determined, as well as cosine losses of the heliostat Held. The receiver layout is based on maximum gain on 21 June, 12 O'clock noon.

ISSN:0142-5919    

DOI:10.1080/01425918208909886

出版商:Taylor & Francis Group    

年代:1982

数据来源: Taylor

摘要:

The photoassisted reduction or aqueous carbon dioxide was carried out in the presence of suspensions of powdered strontium titanate, surface treated with various transition metal oxide additives, using either high-pressure mercury lamps or sunlight as the energy source. The organic products observed included formic acid, formaldehyde, methanol, acetaldehyde and ethanol.

ISSN:0142-5919    

DOI:10.1080/01425918208909887

出版商:Taylor & Francis Group    

年代:1982

数据来源: Taylor

摘要:

Die in Simulationsanlagen für die Globalstrahlung vorhandene spektrale Verteilung der Strahlung wird in der Praxis immer von der der Globalstrahlung abweichen. Wenn in solchen Anlagen die Bestrahlungsstärke auf den Wert der für Prüfzwecke vorgeschlagenen Globalbe-strahlungsstärke eingestellt wird, ergeben sich Wirkungen bei bestrahlten Objekten, die von denen bei Bestrahlung mit Globalstrahlung abweichen.

ISSN:0142-5919    

DOI:10.1080/01425918208909888

出版商:Taylor & Francis Group    

年代:1982

数据来源: Taylor