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1. A comparative Analysis of the Performance of Monocrystalline and Multiycrystalline PV Cells in Semi Arid Climate Conditions: the Case of Jordan.

Author

Abdelkader, M. R., Al-Salaymeh, A., Al-Hamamre, Z., and Sharaf, Firas

Subjects
*ENERGY consumption, *CALORIC expenditure, *RENEWABLE energy sources, *SOLAR radiation, *COMPARATIVE studies, *PHOTOVOLTAIC effect, *PHOTOVOLTAIC cells, *CLIMATE change
Abstract

The energy consumption in the world is increasing greatly owing to the growing population, and to increasing energy consumption per capita. This high energy consumption is associated with a high life quality. Due to this fact, and to the energy price and availability and to the potential threat of global climate changes, there is a great motivation to use energy from renewable sources such as solar energy. Jordan is a developing non-oil production country and its energy needs are imported from abroad as oil and petroleum products. On the other hand, Jordan has an abundance amount of solar radiation 300 days a year. Photovoltaic modules provides safe, reliable, maintenance-free, without noise, and environmentally friendly source of power. This paper evaluates the performance of different solar modules in semi arid climate as in Jordanian. An experiment to investigate the performance of two photovoltaic modules is conducted at different times of the year. The measured parameters in this paper are: output open circuit voltage and short circuit current from the PV modules, ambient temperature and solar intensity. The relationship between the performance and the efficiency of monos crystalline PV and multi crystalline PV is measured in this experiment. The performance value of the PV solar module is identified and compared with the output values supplied by the producer of the PV modules and with other PV models. [ABSTRACT FROM AUTHOR]

Published
2010

2. Extremely Low-Energy Design for Army Buildings: Dining Facility.

Author

Deru, Michael, Langner, Rois, Zhivov, Alexander, Liesen, Richard, Herron, Dale, and Smith, Vernon

Subjects
*ENERGY consumption, *CONSTRUCTION, *SCHOOL lunchrooms, cafeterias, etc., *RENEWABLE energy sources, *CLIMATE change, *COMPARATIVE studies
Abstract

The U.S. Army Corps of Engineers, in collaboration with the U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL), academia, and private sector subject matter experts, recently completed an energy study to evaluate potential site and source energy-use reduction in new Army buildings. The study was completed in response to the mandates for energy savings in federal buildings enacted by the U.S. Energy Independence and Security Act of 2007 (U.S. Congress 2007). The building types studied included an Unaccompanied Enlisted Personnel Housing (UEPH or barracks), a brigade headquarters (administrative building), a company operation facility, a maintenance facility, and a dining facility (DFAC). The study was conducted for representative locations in all 15 DOE identified climate zones in the United States with building designs adapted to these climatic conditions. This paper presents the results of the energy analysis for a typical Army dining facility. It discusses energy efficiency measures and combinations used to reduce both internal and external loads on the building and overall energy use. The largest load in a DFAC is the cooking, and the currently available best-in-class kitchen equipment is included in the final design. The potential site energy savings compared to the energy code range from 21% to 38%. The potential source energy savings compared to Commercial Building Energy Consumption Survey ranges from 37% to 42%. Additional savings may be obtained if an efficient cogeneration system is used and the building is considered as a part of the building cluster or community to fully utilize the energy from the cogeneration system. [ABSTRACT FROM AUTHOR]

Published
2012