The Conserval Perforated Plate Solarwall is a metal solar collector designed to provide preheated ventilation (make-up) air for buildings. The system is intended primarily for industrial applications, but also has potential for commercial and multiresidential buildings with large south-facing walls. In 1991, a 420 m2 Solarwall was erected at the General Motors of Canada Battery Plant in Oshawa, Ontario. This installation reduced energy costs in several ways: by capturing solar energy, by reducing heat loss through the south-facing wall of the building, and by destratifying indoor air.
Within an International Energy Agency (IEA) project (Annex 27) experts from 8 countries(Canada, France, Italy, Japan, The Netherlands, Sweden, UK, and USA) have developed toolsfor evaluating domestic ventilation systems during the heating season. Building and useraspects, thermal comfort, noise, energy, life cycle cost, reliability, and indoor air quality(IAQ) tools were developed.
The purpose of this study was to evaluate the indoor air quality parameters in a residentialdwelling using information from the field. The subject was a typical example of the modernItalian dwelling stock, built in the 1980s in a residential area in the northernpart of Rome.The dwelling was constructed from pre-cast panels using industrial building techniques. Thewindows were steel-framed and painted. Airtightness was measured to obtain the ACH (airchanges per hour) at 50 Pa pressure difference, and ELA (equivalent leakage area).
Recently well-insulated and well-airtightened houses are increasing in Japan. Those houses havesome problems of air quality because of formaldehyde from construction materials. Ventilationsystems have possibility to solve these problems. The authors have developed a simulation programfor designing building elements, equipment elements to keep balance among comfortabletemperature and humidity, good air quality and energy conservation. The effects of some ventilationsystems in multiple dwellings are revealed by the developed simdation program.
The project of CEN Standard from the Ventilation for dwellings group TC156/WG2/AH4 [1]for airflows calculations is being submitted to enquiry.This method can be easily compared to AIVC guides to calculate the ventilation airflow(natural or mechanical) in a given status. Yet, for energy loss estimation, these airflowscalculations must be done either hour per hour, either with average values andsimplifications.
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