A case study of the ventilation characteristics of office accommodation forming part of a recently refurbished building is presented. A mechanical system has been installed to ventilate and cool two floors that are interconnected by a series of atria, with a novel application of displacement ventilation applied where there is a very low ceiling height. The air distribution and air quality within the space have been studied by the application of computational fluid dynamics (cFD) to allow the computation of air change effectiveness in terms of local mean age.
In a fitting tribute to the new millennium, ASHRAE issued ASHRAE/ IESN A Standard 90 .1-1999, Energy Standard for Buildings Except Low-Rise Residential Buildings at the Winter Meeting in Dallas in February. This new version of Standard 90.1 represents ten years of effort on the part of the project committee that completely revised the previous 1989 version of the standard.
Positive input ventilation systems for dealing with dampness in dwellings have been available for many years, but do they really reduce condensation? A DETR-funded research project has provided some answers
A large number of modern European buildings are equipped with ducted air distribution systems. Because they represent a key parameter for achieving a good indoor climate, increased attention has been given to their performance during the past fifty years. One aspect that is particularly developed in this handbook concerns the airtightness of the ductwork, which has been identified as a major source of inadequate functioning and energy wastage of HVAC systems. The investigations were carried out within the framework of the DUCT project (1997-1998).
The literature for the control of dust mites by modification of the psychrometric conditions of the environment is reviewed from the standpoint of a building scientist or engineer, both to present to building science workers an envelope of microenvironment psychrometric conditions to use as control, and to highlight those areas of dust mite biology that require further research to complete the knowledge of the psychrometric envelope for dust mite viability.
A field test protocol to assess the heating season energy impact of operating corridor ventilation systems was developed and successfully applied to five multi-unit residential buildings (MURBs) in Winnipeg. The protocol was straightforward and inexpensive to apply. The data analyses, done in a spreadsheet computer program, revealed a similar relationship between energy use and operation of the corridor ventilation system for all five MURBs.
Login