AIVC - Air Infiltration and Ventilation Centre

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Adaptive thermal comfort and sustainable thermal standards for buildings.

Explains the origin and development of the adaptive approach to thermal comfort. Considers several recent developments in the application of the theory and the origin of the differences between adaptive thermal comfort and the 'rational' indices. Explores its application to comfort standards and makes recommendations about the best comfort temperature, the range of comfortable environments and the maximum rate of change of indoor temperature. Also mentions the application of criteria of sustainability to thermal standards for buildings.

Thermal comfort in naturally ventilated buildings: revisions to ASHRAE Standard 55.

A new adaptive comfort standard is included in recently accepted revisions to ASHRAE Standard 55 - 'thermal environmental conditions for human occupancy'. The new standard allows warmer indoor temperatures for naturally ventilated buildings during summer and in warmer climate zones. The paper summarises the research carried out to formulate this new standard, presents some of the findings for naturally ventilated buildings, and discusses the standardization process. Suggests ways to use the ACS for the design, operation and evaluation of buildings and for research.

Introduction to thermal comfort standards and to the proposed new version of EN ISO 7730.

Describes existing ISO standards and current projects concerning thermal comfort. Describes the production process for ISO standards. Considers the existing EN ISO 7730 thermal comfort standard in these terms and also ISO 8996 (metabolic rate0 and ISO 9920 (clothing). Also presents the work of ISO/TC 159 SC5, 'ergonomics of the physical environment'. Gives a detailed presentation of the proposed revision of EN ISO 7730. This will be based on requirements for general thermal comfort, operative temperature and local thermal discomfort.

Thermal comfort standards.

Brief article introducing issues in the topic of thermal comfort standards and outlining papers from a recent conference on the subject held at Windsor, UK.

Ventilation and IAQ standards a target-oriented approach.

Reviews several key aspects of ventilation and indoor air quality standards. Also highlights the complexity of the IAQ issues from the standardization viewpoint. Detailed technical solutions are dependent on project-specific criteria including climatic, cultural and other aspects as well as differences in national regulations, standards, guidelines and available IAQ technologies.

Strategies and protocols for indoor air monitoring of pollutants.

States that many environmental parameters need to be considered when assessing the quality of the air in an indoor environment, with an emphasis on clear definitions. Outlines the factors that determine IAQ and provides guidance on how to design an appropriate sampling strategy for organic compounds in the vapour phase. Reviews the present state of development of European and international standards for methods of measurement of indoor air pollutants.

Energy performance standardisation and regulation: state-of-the-art, challenges and ongoing actions.

Energy Performance standardisation and legislation is receiving an increased interest in many countries. The paper is split up in 3 parts: An overview of the present status: which countries have such regulation in force or under preparation, what is the link with European standardisation? What are the challenges for achieving an effective EP approach? What are important on-going activities?

Building airtightnesses in the new French thermal regulation RT 2000.

Ventilation plays an important role in the RT 2000 regulation. The ventilation system is of course taken into account, but also the building envelope airtigthness on which this paper focuses.

Designing lab ventilation to emerging standards.

Designing a ventilation system for a laboratory is challenging not only because these facilities consume a lot of energy and may contain materials that are toxic, flammable, explosive, infectious, or radioactive, but because standards and codes concerning them are revised often to reflect stricter health and safety requirements and improvements in technology.

Car park ventilation systems.

States that car park ventilation systems not only have to control the exhaust gases emitted by vehicles but take into account possible fuel spillages and the venting of smoke in the event of a fire. Explores ways of checking for compliance.

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