English

Monitoring campaigns have been carried out over 2 or 3 years in 12 low-energy office buildings located in three different summer climate zones (summer cool, moderate, and summer hot) in Germany. The raw data were processed for data evaluation of the time of occupancy. A comfort evaluation in these 12 low-energy office buildings indicates clearly that buildings using only natural heat sinks for cooling provide a good thermal comfort during typical and warm summer periods in Germany.

The potential use of natural ventilation as a passive cooling system in new building designs in Kayseri, a midsize city in Turkey, was investigated for that study. Indoor air velocity distributions were simulated by the Fluent package program. Using the simulated data, an artificial neural network (ANN) model was developed for the prediction of indoor average and maximum air velocities. A high correlation was found between the simulated and the ANN predicted data.

The university of Michigan and its stakeholders invested in the creation of the Life Science Institute (LSI) , state-of-the-art research facility, to foster basic and translational research. That paper gives a description of that six-floors building, its design considerations, the central plant heating and cooling, the vivarium space design based on a ventilated cage rack system. The environmental impact is presented too.

That large field study carried out in 104 child care centers (CCCs) in a hot and humid climate provides information on the IAQ characteristics and the corresponding respiratory health symptoms of children attending those CCCs under four different ventilation strategies : natural, air-conditioned and mechanically ventilated, air-conditioned using split units, and hybrid ventilation. The research method, its results are presented followed by a discussion.

A report of an experimental evaluation of an ultraviolet photocatalytic oxidation (UVPCO) device with tungsten oxide modified titanium dioxide (TiO2) as the photocatalyst, is presented in this paper. Conversion efficiencies and clean air delivery rates have been measured for individual VOC components of several indoor relevant mixtures established at realistically low concentration levels. The formation of gas-phase products of incomplete conversion has been then investigated.

The effectiveness of an animal building’s ventilation system is usually characterized in terms of air exchange capacity (by measuring the air speed) and air distribution (by measuring the inlet air speed and airflow pattern). These parameters are more apt

PIV data were used to evaluate a renormalization group (RNG) k-e turbulence model of airflow in a full-scale test room (5.5 × 3.7 × 2.4 m [18.0 × 12.1 × 7.9 ft]) using FLUENT software. Three typical ventilation cases with ventilation rates of 0.12, 0.26,

For this study; air circulation and temperature distribution in a room for a particular location of air inlet and outlet on opposite walls, has been investigated. A two-dimensional, steady, laminar, incompressible flow has been considered.

This paper is a demonstration of how school facilities can be designed and operated to tally with Ashrae's ventilation, energy and thermal comfort standards while remaiming energy efficient and cost effective.

Multi zone computer simulation is used to predict the concentrations of carbon dioxide, carbon monoxide, formaldehyde and water vapour in a flat and detached house, fitted with five different ventilation systems all of which comply with current building regulations for England and Wales. Results show that, understandably, the different ventilation systems produce different spatial and temporal pollutant concentrations. A method based on equivalent ventilation rates for each pollutant is used to optimise the specification of the ventilation systems.