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: Energy management systems provide an opportunity to collect vast amounts of building-related data. The data contain abundant knowledge about the interactions between a building’s energy consumption and the influencing factors. It is highly desirable that the hidden knowledge can be extracted from the data in order to help improve building energy performance. However, the data are rarely translated into useful knowledge due to their complexity and a lack of effective data analysis techniques. This paper first conducts a comprehensive review of the commonly used data analysis methods applied to building-related data. Both the strengths and weaknesses of each method are discussed. Then, the critical analysis of the previous solutions to three fundamental problems of building energy performance improvement that remain significant barriers is performed. Considering the limitations of those commonly used data analysis methods, data mining techniques are proposed as a primary tool to analyze building-related data. Moreover, a data analysis process and a data mining framework are proposed that enable building-related data to be analyzed more efficiently. The process refers to a series of sequential steps in analyzing data. The framework includes different data mining techniques and algorithms, from which a set of efficient data analysis methodologies can be developed. The applications of the process and framework to two sets of collected data demonstrate their applicability and abilities to extract useful knowledge. Particularly, four data analysis methodologies were developed to solve the three problems. For demonstration purposes, these methodologies were applied to the collected data. These methodologies are introduced in the published papers and are summarized in this paper. More extensive investigations will be performed in order to further evaluate the effectiveness of the framework.Building Simulation 01/2013; 6(2). · 0.65 Impact Factor
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ABSTRACT: Airports are very energy-intensive areas, because of the large buildings (both terminals and non-passengers areas) equipped with heating and air-conditioning systems, the high power demand for lighting and electric equipment and the energy requests from many facilities within the airport area. The contemporaneous and high demand for power and heat makes cogeneration to represent a viable solution for energy saving; in southern climate zones, however, combined heating, cooling and power (CHCP) systems can lead to even better results. This paper constitutes the first part of a work in two parts; starting from an analysis of typical energy demand profiles in airports, economical and technical criteria to assess the feasibility of trigeneration plants are proposed. Typical results for large airports are also presented. Part II of this work presents an in-depth analysis for the Malpensa 2000 airport, oriented to optimize the design and the operation of the CHCP system.Applied Thermal Engineering. 01/2006;
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ABSTRACT: This paper is to present a case of a newly built office building in the UK and to show how the energy efficiency technology in building might contribute to the energy conservation and therefore in full compliance with Part L building regulation. A large array of solutions are used which include the use of ventilation system with good high heat recovery system, limiting the heat loss and gain through the fabric by enhancing levels of insulation of building fabric to achieve lower u-values, limiting the heat loss and gain through the fabric of the building by improving air tightness to minimise any uncontrolled air leakage, provision of space heating and hot water systems which are energy efficient, improve daylight levels and reduce artificial lighting energy, provision of lighting control systems with appropriate lamps so that energy can be used efficiently improve control and monitoring of mechanical heating and ventilation systems. The office building in case study has shown the compliance with the building regulation and thus conserves the energy. Energy conservation and the compliance with building regulation are achieved through early incorporation into the building design. KeywordsEnergy Conservation-Sustainability-Building Services-Part L Building Regulation12/2010: pages 1-13;