The life cycle design framework was applied to photovoltaic (PV) module design. The primary objective of this project was to develop and evaluate design metrics for assessing and guiding the improvement of PV product systems. Two metrics were used to assess life cycle energy performance of a PV module: energy payback time and electricity production efficiency. These metrics are based on materia...

BACKGROUND Debate is intensifying about how to assess the full range of impacts from medical research. Complexity increases when assessing the diverse funding streams of funders such as Asthma UK, a charitable patient organisation supporting medical research to benefit people with asthma. This paper aims to describe the various impacts identified from a range of Asthma UK research, and explore ...

The efficiency and output power of gas turbine power plants are heavily affected by ambient air temperature. To compensate this defect, some cooling technologies and technics are applied. In this paper, the effect of applying an absorption chiller by recovering waste heat from gas turbine flue gas has been investigated. For this purpose, the behavior of a GE-F5 gas turbine was modeled by coding...

Energy efficient systems are the most desirable systems. Due to huge rise in energy prices and lack of availability of energy, the effective use of energy has become the need of time. Energy recovery both in heating systems as well as in air-conditioning systems saves a lot of energy. In this paper energy recovery system has been designed and optimized for central air-conditioning systems for v...

OBJECTIVES To identify the role of modelling in planning and prioritising trials. The review focuses on modelling methods used in the construction of disease models and on methods for their analysis and interpretation. DATA SOURCES Searches were initially developed in MEDLINE and then translated into other databases. REVIEW METHODS Systematic reviews of the methodological and case study lit...