In this study, a step by step process has been used for the development of deemed-to-satisfy design solutions, that cope with the energy efficiency - thermal comfort - indoor air quality dilemma (EE-TC-IAQ Dilemma), for a performance based code. A distinction is made between improving building design variables and improving ventilation schemes.
Air distribution solutions to lower air velocities and good temperature control are studied in that paper. Measurements and temperature simulatins were carried out in 6 schools.
For that paper, used supply air filters have been studied by sensory and chemical methods. Thermodesorption/cold trap (TCT) and headspace (HS) devices were used too to examine the filter dust. Results and conclusions are presented.
A numerical study has been done to determine the effect of the perimeter heating load on the air diffusion performance iindex (ADPI) of an air diffuser for different air flow rates and different heating loads.
A model for displacement ventilation prediction based on plume rise of single point heat source was developed for that study. Numerical and experimental data are compared .
The purpose of this case study is to analyze stack effect problems and to develop the method minimizing stack effect in the tall complex building in the winter season. The main problems in tall complex building occur in high-rise elevators. Such problems in the elevator doors that do not close or exhaust air flows result in excessive pressure difference across elevator doors due to stack effect. Under the expected conditions causing the pressure difference, computer simulations with CONTAMW computer program and field measurement were performed in tall complex building.
Indoor Air Quality and thermal climate in schools is problematicin many countries. The status quo in the Netherlandsis presented (e.g. average CO2 levels in schools, problems with ventilation). The goal of a first study was to evaluate the performance of exhaust-only ventilation systems. In a following study, 6 schools with different ventilation systems were studied. Main conclusions from these studies were: IAQ in the evaluated schools did not meet the requirements and more ventilation was essential for better IAQ.
To predict ventilation and related air flow parameters, a lot of calculation techniques could be utilized; however the main difficulties concern ease of use and the providingof input data. Today, many advances are taking place, especially in the areas of user friendly access and embedded databases. To find reliable result in designingprocess and evaluate the performance of ventilation simulating methods are increasingly needed in every step of designing. They are especially important for making preliminary evaluations of complex ventilation and air flow strategies.
Results of survey on residential active cooling as the diffusion rate of air conditioner in five principal cities of in Japan, and those associated “human temperature sensitivity” for passive and low energy cooling are described. Increase in air-condition
The ENPER-EXIST project was initiated and coordinated by Centre Scientifique et Technique du Bâtiment (CSTB) within the framework of the Intelligent Energy Europe (IEE) programme. ENPER-EXIST involved partners from seven countries (Belgium, Denmark, Franc
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