ENERGY-EFFICIENCY IN AIR-CONDITIONED BUILDINGS: AN OVERVIEW

The Egyptian community in its path for rapid development is endeavouring to make all necessary andappropriate measures to enhance the efficiency of energy utilization and increase the beneficiation ofthe energy resources. Throughout the Nation, Energy resources are widely used and consumptionrates are in general exceeding the International accepted values. The use and application of new andrenewable energy sources can be harnessed to design, construct and operate a solar building ofmoderate size for desert applications.

LIFE CYCLE COSTS FOR INDOOR CLIMATE SYSTEMS WITH REGARDS TO SYSTEM CHOICE, AIRFLOW RATE AND PRODUCTIVITY IN OFFICES

Assumptions of productivity costs related to the outdoor supply airflow rate and indoor temperature canbe made based on a number of recent studies. A life cycle cost (LCC) computer program for indoorclimate systems based on Swedish conditions was developed and used to compare and optimizedifferent indoor climate systems. A productivity cost related to the outdoor supply airflow rate and theindoor temperature according to the recent studies was assumed.

Energy Efficient Lighting Solutions

The IEA, section ECBCS (Energy Conservation in Buildings and Community systems), has launched the project Annex 45 ‘Energy Efficient Electric Lighting for Buildings’, of which subtask B deals with innovative technical solutions. Part of the work is to def

Comfortable High-Performance and Low-Exergy Built Environment

This paper outlines the applicability of the “exergy” concept to describe the built environment for a better futuristic view of heating and cooling systems to be developed. We briefly review the fundamental laws of thermodynamics aiming at the derivation

The Effect of Planted Roofs on the Energy Behaviour of Buildings

Vegetation on the building envelope can have a marked effect on the microclimate and on the building’s energy behavior as well. In this paper, the impact of planted roofs on the thermal load of buildings is presented. Based on measurements and a series of

Methodology of a Local Plan to Manage Energy (Production and Consumption)

This project aimed at developing a methodology to help the Local Authorities and the town managersto carry out suitable policies in order to save energy and promote the use of renewable energies. Thismethodology will be useful too for the civil servants in charge of following and assessing the localactions granted by the Regional Authorities.

Fixed and Customised Benchmarks for Building Energy Performance Certificates based on Operational Ratings

The EPLabel project is developing a ‘graduated response’ to address the EPBD Article 7.3 requirement for ‘Public Buildings’ over 1,000 m² to display an Energy Performance Certificate prominently. The idea is that assessments can be at different levels of

Cost-Effective Requirements Levels for Energy Performance of Buildings in Lebanon

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.

A CHCP System Constituted by Microturbine and Exhaust Absorption Chiller

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

Analyse des résultats de la réhabilitation énergétique de 3 lycées

In France, for historical and demographic reasons, many educational buildings must be retrofitted in the next years.However, various studies showed that measurements of energy savings, and improvement of comfort, are rarely applied in the retrofitting operations, because of a lack of knowledge of the decision makers concerning the potential improvements.The program REDUCE of International Energy Agency - ECBCS Annex 36, and studies aiming at promoting the high environmental quality of the educational buildings in France, showed the existence of a potential improvement of the energy efficie

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