This paper presents two kinds of ventilation strategies applied respectively to an air-duct-type residential central air conditioning (A/C) system including a variable-speed compressor with inverter and a multi-speed air handler fan. First strategy : the ventilation damper was controlled according to the carbon dioxide (CO2) concentration of space air , allowing intermittent ventilation. Second strategy : outdoor air was inhaled into the habitable space continuously at a fixed minimum flow rate specified by ASHRAE Standard 62.2P.

A three-dimensional mathematical model is described in this paper. It intends to solve the displacement ventilation . The thermal plume and stratification of air in displacement ventilation system are clearly illustrated by numerical results. The results presented can be helpful for a better understanding and designing of this type of ventilation system.

The EPA BASE study is concerned with indoor environmental measurements in 100 U.S. office buildings. In this paper an analysis of the measured outdoor air ventilation rates is presented, it includes comparisons with the requirements in ASHRAE Standard 62

Building design and the operation strategy have an influence on ventilation and Indoor Air Quality . The unique high rise residential building design in Hong Kong is a product that complies with the Building (Planning) Regulation requirements and the request for spatial efficiency from the developers.

This study describes the results of field measurement to evaluate air-conditioning operating method for large-scale atrium. In Part 1, the passive ventilation operating method using the leakages within the outer walls and the stack effect of the high-rise buildings is recommended for the large-scale grand lobby during the intermediate season.

The trial implementation of hybrid ventilation systems in dwelling buildings, done in the scope of the EU LIFE Programme supported project ECOVENTis the aim of that paper. In that end, systems performance have been monitored during full calendar year to show the possibility of that system use in Latvian climate conditions .
The paper gives theoretical working modes of the ideal hybrid ventilation system, describes advantages and drawbacks of the ventilation systems selected for the trial implementation.

Within the European research project HOPE, office and residential buildings were investigated using checklists addressing the building characteristics . the occupants were asked to fulfill questionnaires about their perceived comfort (thermal visual, acoustical and IAQ) and health (SBS and allergies).
The analysis of the collected data, along with experience obtaied from former projects and literature allows the presentation of guidelines for creating healthy and energy-efficient buildings.

Within the European research project HOPE, office and residential buildings were investigated using checklists addressing the building characteristics . the occupants were asked to fulfill questionnaires about their perceived comfort (thermal visual, acoustical and IAQ) and health (SBS and allergies).
The collected data are compared looking for correlations between building characteristics on one hand, and perceived comfort and health on the other hand.

The aim of the study was to investigate the association between ventilation and the worker’s nonspecific building-related symptoms (BRS) in one office. The study office took place in the sixth floor of one semiconductor company with a floor area of 1452 m

A field study in 18 selected houses in Dublin and the surrounding area has been carried out between September 2004 and February 2005Continuous measurements of Indoor temperature, relative humidity (RH), concentrations of selected pollutants including carbon dioxide (CO2), carbon monoxide (CO), particulate matters (PM1, PM2.5, PM7 and PM10), moisture, and ozone (O3) were made in each house. The infiltration rates in ten houses were tested with both fan pressurization and tracer gas decay methods. The results of those investigations are presented.