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Special Issue "Advances in Solar Energy"

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A special issue of Energies (ISSN 1996-1073).

Deadline for manuscript submissions: closed (15 April 2011)

Special Issue Editor

Guest Editor
Prof. Dr. Robert F. Boehm (Website)

Department of Mechanical Engineering, University of Nevada, Las Vegas (UNLV), 4505 Maryland Parkway, Las Vegas, NV 89154, USA
Phone: 702-895-4160

Special Issue Information

Dear Colleagues,

The Special Issue "Advances in Solar Energy" will be devoted to new developments in the application of solar energy. While articles dealing with either advanced concepts or summaries of the state of research in any particular areas of solar energy development will be considered, some specific areas of interest are noted below.

Articles are sought that outline issues related to photovoltaic (PV) cell development trends, new technical approaches to PV cell developments, comparison of the economics of thin film cells, advances in silicon cell concepts and concentrating systems; an overview of materials’ availability for the various types of solar cells; and developments and performance of building integrated photovoltaics (BIPV) are also welcome.

Advances in systems that enhance the natural lighting of buildings are of interest. Included can be new types of high performance fenestration materials, systems for direct admittance of solar energy through unconventional means, including solar hybrid lighting systems.

Also encouraged are papers related to solar thermal applications with particular emphasis on large-scale power generation and cooling technologies. Papers on new approaches to storage and/or transport of energy for these types of systems are of particular interest. Minimization of water use in cleaning concentrating systems as well as new developments in high performance dry cooling techniques are encouraged.

Guest Editor
Robert F. Boehm

Keywords

  • photovoltaics
  • concentrating systems
  • BIPV
  • natural lighting
  • hybrid lighting
  • thermal power systems
  • solar cooling
  • storage and/or transport of thermal energy
  • minimization of water use

Published Papers (3 papers)

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Research

Open AccessArticle Energy Saving Evaluation of the Ventilated BIPV Walls
Energies 2011, 4(6), 948-959; doi:10.3390/en4060948
Received: 17 January 2011 / Revised: 30 May 2011 / Accepted: 10 June 2011 / Published: 14 June 2011
Cited by 5 | PDF Full-text (873 KB) | HTML Full-text | XML Full-text
Abstract
This study integrates photovoltaic (PV) system, building structure, and heat flow mechanism to propose the notion of ventilated Building-Integrated Photovoltaic (BIPV) walls. The energy-saving potential of the ventilated BIPV walls was investigated via engineering considerations and computational fluid dynamics (CFD) simulations. The [...] Read more.
This study integrates photovoltaic (PV) system, building structure, and heat flow mechanism to propose the notion of ventilated Building-Integrated Photovoltaic (BIPV) walls. The energy-saving potential of the ventilated BIPV walls was investigated via engineering considerations and computational fluid dynamics (CFD) simulations. The results show that the heat removal rate and indoor heat gain of the proposed ventilated BIPV walls were dominantly affected by outdoor wind velocity and airflow channel width. Correlations for predicting the heat removal rate and indoor heat gain, the reduction ratio of the indoor heat gain, CO2 reduction, and induced indoor air exchange are introduced. Full article
(This article belongs to the Special Issue Advances in Solar Energy)
Open AccessArticle Building Space Heating with a Solar-Assisted Heat Pump Using Roof-Integrated Solar Collectors
Energies 2011, 4(3), 504-516; doi:10.3390/en4030504
Received: 25 January 2011 / Revised: 2 March 2011 / Accepted: 7 March 2011 / Published: 14 March 2011
Cited by 4 | PDF Full-text (659 KB) | HTML Full-text | XML Full-text
Abstract
A solar assisted heat pump (SAHP) system was designed by using a roof-integrated solar collector as the evaporator, and then it was demonstrated to provide space heating for a villa in Tianjin, China. A building energy simulation tool was used to predict [...] Read more.
A solar assisted heat pump (SAHP) system was designed by using a roof-integrated solar collector as the evaporator, and then it was demonstrated to provide space heating for a villa in Tianjin, China. A building energy simulation tool was used to predict the space heating load and a three dimensional theoretical model was established to analyze the heat collection performance of the solar roof collector. A floor radiant heating unit was used to decrease the energy demand. The measurement results during the winter test period show that the system can provide a comfortable living space in winter, when the room temperature averaged 18.9 °C. The average COP of the heat pump system is 2.97 and with a maximum around 4.16. Full article
(This article belongs to the Special Issue Advances in Solar Energy)
Open AccessArticle A New Hybrid Algorithm Using Thermodynamic and Backward Ray-Tracing Approaches for Modeling Luminescent Solar Concentrators
Energies 2010, 3(12), 1831-1860; doi:10.3390/en3121831
Received: 24 September 2010 / Revised: 12 November 2010 / Accepted: 23 November 2010 / Published: 26 November 2010
Cited by 3 | PDF Full-text (434 KB) | HTML Full-text | XML Full-text
Abstract
A Luminescent Solar Concentrator (LSC) is a transparent plate containing luminescent material with photovoltaic (PV) cells attached to its edges. Sunlight entering the plate is absorbed by the luminescent material, which in turn emits light. The emitted light propagates through the plate [...] Read more.
A Luminescent Solar Concentrator (LSC) is a transparent plate containing luminescent material with photovoltaic (PV) cells attached to its edges. Sunlight entering the plate is absorbed by the luminescent material, which in turn emits light. The emitted light propagates through the plate and arrives at the PV cells through total internal reflection. The ratio of the area of the relatively cheap polymer plate to that of the expensive PV cells is increased, and the cost per unit of solar electricity can be reduced by 75%. To improve the emission performance of LSCs, simulation modeling of LSCs becomes essential. Ray-tracing modeling is a popular approach for simulating LSCs due to its great ability of modeling various LSC structures under direct and diffuse sunlight. However, this approach requires substantial amount of measurement input data. Also, the simulation time is enormous because it is a forward-ray tracing method that traces all the rays propagating from the light source to the concentrator. On the other hand, the thermodynamic approach requires substantially less input parameters and simulation time, but it can only be used to model simple LSC designs with direct sunlight. Therefore, a new hybrid model was developed to perform various simulation studies effectively without facing the issues arisen from the existing ray-tracing and thermodynamic models. The simulation results show that at least 60% of the total output irradiance of a LSC is contributed by the light trapped and channeled by the LSC. The novelty of this hybrid model is the concept of integrating the thermodynamic model with a well-developed Radiance ray-tracing model, hence making this model as a fast, powerful and cost-effective tool for the design of LSCs. Full article
(This article belongs to the Special Issue Advances in Solar Energy)

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