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Title: Placement and efficiency effects on radiative forcing of solar installations

The promise for harnessing solar energy being hampered by cost, triggered efforts to reduce them. As a consequence low-efficiency, low-cost photovoltaics (PV) panels prevail. Conversely, in the traditional energy sector efficiency is extremely important due to the direct costs associated to fuels. This also affects solar energy due to the radiative forcing caused by the dark solar panels. In this paper we extend the concept of energy payback time by including the effect of albedo change, which gives a better assessment of the system sustainability. We present an analysis on the short and medium term climate forcing effects of different solar collectors in Riyadh, Saudi Arabia and demonstrate that efficiency is important to reduce the collector area and cost. This also influences the embodied energy and the global warming potential. We show that a placement of a high concentration photovoltaic thermal solar power station outside of the city using a district cooling system has a double beneficial effect since it improves the solar conversion efficiency and reduces the energy demand for cooling in the city. We also explain the mechanisms of the current economic development of solar technologies and anticipate changes.
Authors:
; ; ;  [1]
  1. IBM Research - Zurich, Säumerstrasse 4, CH-8803 Rüschlikon (Switzerland)
Publication Date:
OSTI Identifier:
22489016
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1679; Journal Issue: 1; Conference: CPV-11: 11. international conference on conventrator photovoltaictaic systems, Aix-les-Bains (France), 13-15 Apr 2015; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; ALBEDO; CONCENTRATION RATIO; DISTRICT COOLING; ECONOMIC DEVELOPMENT; EFFICIENCY; ENERGY DEMAND; GREENHOUSE EFFECT; INSTALLATION; PANELS; PHOTOVOLTAIC CONVERSION; PHOTOVOLTAIC EFFECT; RADIATIVE FORCING; SAUDI ARABIA; SOLAR COLLECTORS; SOLAR ENERGY; SUSTAINABILITY; URBAN AREAS