This paper is a presentation of a concept for a new automated tool that uses the capabilities of Building Energy Management Systems (BEMS). Some parts of the commissioning process can be automatized and can generate benefits over the whole life of a building.
A satisfying building commissioning depends on both using right models and using models right. Through 3 case studies, this paper shows how to use simulation models correctly, to commission HVAC systems.
Floor return (FR) type underfloor ventilation system was installed in the assembly hall of aprimary school in Hong Kong. Experimental investigations on the airflow and temperaturecharacteristics were conducted. Pollutant distributions were also measured with different freshair supply rates. Results reveal that the use of low momentum floor supply panels reduced therisk of draught discomfort and created a more significant temperature stratifications comparedto those with fan boosted type floor air terminals. Ventilation of polluted air was localized upto the occupants breathing level.
In this paper, the results of the elaboration of the experimental data from 1-year longmonitoring of the performances of an innovative HVAC system installed in a multi-roomscinema of the Warner Bros Village near Venice is presented. This system is based on a rooftopexpressly designed for cinemas applications.The behaviour is analysed to verify the machine design choices in terms of reliability,energy efficiency and comfort level achieved. The study confirms the validity of the designwhich characterizes this HVAC system.
The aim of the study was to develop solutions to the problems and deficiencies encountered inventilation systems of day care centres, and which were manifested as poor IAQ or excessiveenergy consumption in the buildings at the maintenance stage of their ventilation systems.During the afternoon rest hour the IAQ was monitored and other measurements of ventilationcapacity were made. The directors and maintenance personnel of the day care centres wereinterviewed and a questionnaire was presented to the staff.
The ventilation system of a hospital operating theatre is designed to provide a comfortable andhealthy environment for the patient and the surgical team. A healthy environment can beachieved by minimizing the risk of contamination through an appropriate filtration and airdistribution scheme. The design and construction of operating theatres in Hong Kong,including the upgrading of the older ones, are based on the UK Health Building Notes andHealth Technical Memoranda.
This paper deals with a pilot study in portable classrooms where neither adequate ventilation nor associated conditioning of indoor air for occupant comfort were provided. Concentrations of pollutants should be mitigated with an appropriate ventilation and should lead to a reduction of symptoms of "sick building syndrome"
The focus of this paper is on cost effectiveness of remedial measures for existing buildings in order to reduce high summer time indoor temperatures. A typical Finnish office building was selected for the analysis. The cost items included in the analysis are: the capital cost of the remedial measure (increase of ventilation, mechanical cooling added in central air handling unit), cost of the used energy (heat and electricity), and the cost of deteriorated productivity due to high temperatures.
In this paper the author develops the key factors that influence the performance of ventilation systems mainly in large office buildings. Information for the efficient operation of these systems is provided.
This article sums up a detailed analysis of variable air volume (VAV) box control. Sizing criteria are provided in order to minimize the life-cycle cost in typical application.
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