Experimental Investigation of Thermal Behaviour of Phase Change Materials under Dynamical Thermal Effects

Because we spend most of our time in enclosed spaces, thermal comfort of buildings rose increasinglyand then energy consumption correspondingly is increased, aggravating the pollution of naturalenvironment. Integrating phase change materials (PCM) into building walls is a potential method ofreducing energy consumption in passively designed buildings. However, there is a strong need forexperimental data to evaluate the capacity of PCM to stabilize the internal environment when there areexternal temperature changes and solar radiations: that is the purpose of our article.

Exergy Use in the Built Environment Basics and Analyses

It is often claimed that energy is consumed; this is not only done in everyday conversation but also inscientific discussions associated with energy and environmental issues. This claim conflicts with thefirst law of thermodynamics stating that the total amount of energy is conserved, even though forms ofenergy may change from one to another.

Energy Saving Measures in Existing Buildings in Denmark

Denmark has long experience with mandatory labelling of existing buildings. In the implementation ofthe new labelling scheme in relation to the Energy in Building Performance Directive special focus hasbeen on optimizing the actually realised energy savings.

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

Energy Efficient and Photometric Aspects in Renovation of Auditorium

Lighting is a substantial energy consumer, and a major component of the service costs in manybuildings. Lighting renovation was done on the Department of Electrical and CommunicationsEngineering at the Helsinki University of Technology. The lighting in the renovated auditorium wasalmost 40 years old. New lamps with electronic ballast are more energy efficient and the ballast lossesare smaller. Also the optical properties of the new luminiares have been greatly improved. This papershow the results obtained in one auditorium.

Energy Benchmarking of Double-Skin Façade Buildings

This paper describes ongoing energy benchmarking studies of double-skin façade buildings. Benchmarking methodology is discussed. Some preliminary results are presented.

ECBCS Annex 47: Cost-Effective Commissioning Research

In 2005, the Executive Committee of the International Energy Agency’s (IEA) Energy Conservation in Buildings and Community Systems (ECBCS) program approved the start of a new four-year research project on building commissioning. Annex 47, on “Cost-Effecti

Cut Back of Non-technological Barriers to Double Skin Facades

This paper is part of the “Best Practice for Double Skin Facades” – ‘BESTFACADE’ project (supported by the Intelligent Energy Europe Programme of the European Community) and aims to describe the cut back of non-technological barriers to the application of

Condenser Heat Recovery in Air Conditioning Systems

This paper is based on the first Belgian case study developed in the frame of theIEA-ECBCS annex 48 project.

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