There is an obvious and indisputable need for an increase in the efficiency of energy utilisation inbuildings. Until now, so-called energy saving measures and analyses of energy flows in buildings havecommonly been based on the energy conservation principle, the first law of thermodynamics.

The purpose of this paper is to introduce Energy Smart Tool, a new web-based building energyperformance benchmarking system developed recently by Energy Sustainability Unit of NationalUniversity of Singapore. It provides users with direct comparisons of their buildings energyperformance to other similar facilities, which helps to identify the position their facilities, and to setenergy saving targets. A general discussion of the benchmarking procedure is given.

As in other parts of the world, building legislation has been used since the 1980s by governmentbodies in the Arabian Gulf countries. These countries sought to reduce rising electrical consumption(6.7% per year) during the construction boom following the discovery of oil. Generally, however, theseearly regulations are limited in scope and have been implemented in a piecemeal manner across thedifferent countries.

The EPLabel project addresses the EU Energy Performance of Buildings Directive (EPBD) Article 7.3: the requirement for ‘Public Buildings’ over 1,000 m² to display an Energy Certificate prominently, OJEC (2003)[1] and is supported by the EC’s Intelligent E

This paper focuses on energy performance compliance checks to the French EP-regulation RT 2000 and the way they are performed in Rhône-Alpes, Burgundy, and Franche-Comté. It gives an overview of the approach developed and used which consists in collecting

This paper presents the energy and economic analysis used to determine cost effective requirementslevels to the thermal standard for buildings in Lebanon. The heating and cooling energy use fordifferent buildings types (18 buildings) according to the variation of envelop parameters was simulatedfor realistic cooling and heating schedules and five Lebanese climatic zones. Parameters investigatedincluded, construction type, insulation levels, window sizes and solar protection. The energysimulation program VISUAL-DOE.3 was used for the energy use simulations.

According to the Article 6 of the 2002/91/EC – EP “when buildings with a total useful floor area over 1000 m2 undergo major renovation their energy performance is upgraded in order to meet minimum requirements ….” which should be derived “…in accordance w

The mitigation of the heat island effect can be achieved by the use of cool materials that arecharacterized by high solar reflectance and infrared emittance values. Several types of cool coatings,both commercially available and prototype ones have been tested. Their spectral reflectance, infraredemittance and surface temperature measurements reveal that these materials can be classified ascool materials with the ability to maintain lower surface temperatures. Cool materials can be used onbuildings (roofs and walls) and other surfaces of the urban environment.

The combined heat, cooling and power production (CHCP) is one of the most interesting methods toincrease the system global efficiency by supplying electric and thermal power needs both in winter andin summer, and at the same time reducing CO2 emissions.Global efficiency increase is related to the use of waste heat which can be also used to producecooling energy by means of a absorption chillers.A CHCP programme is planned in a specific area in the University City of the University of Rome LaSapienza (approximately 1000.000 cubic meter and an energy bill of some 10 M) and it consists of agas

In this paper, a study of the energy performance in Singapore’s hotel industry is reported. Energy consumption data and other pertinent information were collected from 29 quality hotels through a national survey. Building features and operational characte