The paper describes a measurement system developed by Dantec to evaluate room thermal comfort according to ISO 7730 standard (determination of PMV and PPD indices).
The study conducted by the US Government Accounting Office in 1995 says that 25 % of the nation’s schools are plagued by IAQ problems, even higher percentage of schools having IAQ problems is reported by the Environmental Protection Agency (Johnston and D
Natural ventilation’s fluctuating airflow has impacts on the thermal comfort and VOCs transportation in the naturally ventilated buildings. Research about the fluctuating characteristics of the airflow in naturally ventilated buildings was carried on in t
Ventilation and indoor air characteristics were measured in 63 apartments for elderly people in Finland and residents were inquired about indoor climate. Results are shown and analysed.
Literature was reviewed about underfloor systems and engineers having experienced these systems on completed projects were interviewed. Underfloor air distribution systems improve thermal comfort , indoor air quality and user satisfaction.
Thermal comfort (PMV and PPD indices) of a floor return underfloor ventilation system was evaluated through experiments with different supply air temperatures and internal heat loads. Results are shown and analysed.
This paper describes the precautions that have to be taken in design and installation of ventilation systems in order to reduce their noise. They concern fans, ducts and ductwork, air inlet and outlet, air diffusers, air handling unit.
A personalized ventilation system located underneath the front edge of a desk was tested regarding to its ventilation efficiency using a heated mannequin and tracer gas. The air change effectiveness ranged from 1.4 to 2.7.
Thermal comfort obtained with a ceiling cooling system was investigated through experiments with human subjects. Results give their perception of thermal comfort and its relationships with skin temperatures measured at several parts of the body.
Login