Energy conservation potential, HVAC installations and operational issues in Hellenic airports
ABSTRACT This paper presents an overview of the results from a recently completed study on the assessment of the characteristics, current energy consumption and the potential for energy conservation in 29 Hellenic airports. The average annual total energy consumption at the airport terminals is 234 kWh/m2. A more detailed investigation for three representative airports, at different climatic zones, was also performed. Data was collected through energy audits of the three terminal buildings, thermal infrared (IR) inspections of the building envelopes and HVAC installations, an assessment of indoor environmental quality (IEQ) through long term monitoring and spot measurements of indoor thermal and visual conditions, as well as personnel and passenger questionnaires. The collected information was used to perform a detailed analysis using thermal simulations for assessing specific measures to reduce energy use without compromising comfort, and to identify possible actions for improving IEQ. For the three airports, potential energy savings range at 15–35%, while improving and maintaining indoor environmental quality.
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ABSTRACT: Purpose – The purpose of this paper is to present a case of an office building in England and show how the technology in energy efficiency in building will contribute to energy conservation. Design/methodology/approach – The paper presents a case of an office building. The building is then modelled and analysed using IES Virtual Environment VE to estimate the Target Emissions Rate (TER) and the Building Emissions Rate (BER) to see how the building could satisfy Part L of the Building Regulations. Findings – The building in case use various sustainable solutions such as limiting the heat loss and gain through the fabric, ventilation system with a good high heat recovery system, increasing the availability of daylight and good lighting control system. The office building in the case study is in full compliance with Part L of the Building Regulations. The sustainable technology in the building will assist the compliance with Part L of the Building Regulations. Research limitations/implications – This is a single case study building; more case studies for buildings of this nature are required. Practical implications – The paper demonstrates various feasible solutions of sustainable technology in buildings that might help comply with the regulation. Originality/value – The case study building is a real case taken directly from one of the author's projects when he was working as a building services engineer. This case study building and its sustainable features have not been presented before in an academic journal.International Journal of Energy Sector Management 06/2012; 6(2):175-188. DOI:10.1108/17506221211242059
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ABSTRACT: This paper deals with a novel approach to study renewable energy options for buildings to make them more efficient, more cost effective, more environmentally benign, and more technologically attractive. To demonstrate the application of this study, four buildings are chosen as case studies with two from the residential sector, one commercial/institutional building, and one industrial building. A ground source heat pump for heating and cooling, a solar water heater for space heating and/or hot water, and a photovoltaic panel to generate electricity are designed for these case studies. Attempt is made to design projects under hybrid systems combined from two technologies are developed for the above-mentioned four cases. Results obtained indicate that solar thermal option for hot water and space heating becomes the most cost effective one for all cases (e.g., $4956 for Cases 1 and 2 and $70,652 for Case 3, and $91,361 for Case 4). In addition, solar electricity through PVs is technologically the most suitable one to meet the electricity demand. The ground source heat pump option is quite attractive from the efficiency and environmental impact point of views although it requires installation and maintenance, etc. Finally, hybrid systems provide better advantages, such as higher efficiency, reduced cost, reduced emissions, etc.Research highlights▶ Potential renewable energy options for buildings. ▶ Sustainable buildings. ▶ Technology assessment. ▶ Economics of renewable energy systems.Energy and Buildings 01/2011; 43(1):56-65. DOI:10.1016/j.enbuild.2010.08.013 · 2.47 Impact Factor
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ABSTRACT: In this paper, indoor thermal environment of the Terminal 1 of Chengdu Shuangliu International Airport (CSIA) is taken as study object, by means of investigating, measuring and simulating based on computational fluid dynamics (CFD) codes. A total of 569 participants provided 569 sets of physical data and subjective questionnaires, and an indoor thermal comfort meter was used to collect the measured parameters of the indoor environment and the predicted mean vote (PMV). The accepted thermal comfort environment range is obtained. Results considering personal mobility obtained from measuring a number of points have been compared and analyzed, which provides some drawbacks for airflow distributions. Main characteristics of vertical temperature distributions in winter and summer conditions are discussed, measured by the equipment named scaling ladder. The comparison held measuring and CFD results generally shows a good agreement, which confirms that the veracity of the CFD simulation can be achieved. The results are of great importance for designing indoor thermal environment and air conditioning systems of the Terminal 2 of CSIA.