Technology Programme INVENT took place in Finland from 1991 to 1996. In this programme over 100 R&D projects were completed and over 20 Million US dollars used to promote industrial ventilation equipment, systems and services. Based on this, an European COST Action, G3 Industrial ventilation started to further promote this technology. The main aim of the action is to write the "bible" of Industrial Ventilation, DGB, Handbook of Industrial Ventilation. The first part of the book, fundamentals, comes out end of year. The publisher is Academic.

The acoustics and ventilation method allows the designer to explore natural ventilation and acoustics issues at an early design stage. Few input parameters are necessary, like the number of people the space must accommodate and the volume of air per person appropriate to the acoustic function. While allowing the comfort temperature to rise during occupation by some 10 to 15%, the natural ventilation and acoustics can be discussed via the volume of the space.

The Equitable Building, which opened on 1January1948, in Portland, Oregon, was the first of a new architectural form. Technically and aesthetically it was radically different from any previous structure. It was a fully air conditioned building, clad with sheer aluminium curtain walling and huge expanses of sea green tinted sealed glass. It was fully electric with heat pumps providing heating and cooling from underground aquifers. The architect was Pietro Belluschi, an Italian immigrant who originally trained as an engineer and the mechanical engineer was J.

This paper gives an outline of the work that has been carried out in developing a positive ventilation chiller. The demand for air cleaning equipment in public areas and work places (especially where smoking is permitted) had previously prompted the development of a highly innovative ventilator, featuring a combination of ventilation, recirculation and filtration of air. A refrigeration system was successfully retrofitted into the ventilation unit. The chiller is aimed at improving the working and living environment where modem air conditioners are beyond affordability.

In June 2000 ASHRAE's Standard Project Committee on "Ventilation and Acceptable Indoor Air Quality in Low-Rise Residential Buildings", SPC 62.2P, recommended and the Board of Directors approved ASHRAE's first complete standard on residential ventilation for public review. The standard is an attempt by the Society to address concerns over indoor air quality in dwellings and to set minimum requirements that would allow for indoor air quality and energy efficiency measures to be evaluated.

A technique has been developed to estimate the equivalent leakage area needed in residences to provide a quantity of infiltration-driven air exchange which exceeds a design value for a desired level of frequency of occurrence. The technique presented applied an air infiltration simulation model to hourly long term weather data to provide hourly estimates of the infiltration weather factor. Cumulative frequency distributions (CFD) were then used to describe the distribution of these data when 1-, 3-, 6-, 8-,12-, 24-, and 48-hour time periods were grouped together.

The starting point for designs which respond to our worsening environmental situation is a study of building form with particular emphasis on the facade and section and on materials. Only after these have been resolved to optimise the solar potential, to make the best use of daylight , to provide controllable assisted natural ventilation (including night cooling), to attenuate noise (if necessary) and to produce an attractive building should the design team as a whole tum to HVAC systems. To summarise, the plant is only part of the strategy and the smaller part the better.

Air-to-air heat and moisture exchange between exhaust and supply airflows can substantially reduce HVAC costs. This paper outlines the design considerations that should be included when selecting a type of exchanger and shows how the performance of each recovery device can be determined. Energy wheels, which transfers both heat and water vapor, are given special consideration. The HV AC design for heat and moisture exchanger sizing is presented as a least life-cycle cost design problem.