English

This paper explains how to enhance the energy performance of a chiller plant designed with chillers ofequal size or unequal size and having superior coefficient of performance (COP) at part load operation.A simulation study was carried out on an air-cooled centrifugal chiller plant serving an office building.Four design options with respect to the number and nominal capacity of chillers were investigated(OP1: 6 x 1124kW; OP2: 8 x 810kW; OP3: 4 x 1213kW + 2 x 810kW; OP4: 2 x 1350kW + 2 x 1107kW +2 x 801kW).

Whether one considers the issues related to office workers’ well-being and productivity, or the issues from an energy and environmental perspective, there are clear evidences in favor of improving the quality of office built environment. This paper is con

Whether one considers the issues related to office workers’ well-being and productivity, or the issues from an energy and environmental perspective, there are clear evidences in favor of improving the quality of office built environment. This paper is con

With growing concerns about the impact of indoor environment quality on office workers’ well-being and productivity, coupled with the concern over the rising energy costs for space heating and cooling in office building sector, ventilation principles that

An Earth-to-Air Heat Exchanger (ETAHE) uses the ground’s thermal storage capacity to dampen ambient air temperature oscillations by delivering the outdoor air to the indoors through a horizontally buried duct. Most ETAHE simulation models assume the airfl

The objective of this work package was to develop a quality/performance control tool-box model – a concept from design to post construction life long management, using also BEMS/REMS-type procedures and prevailing methods. Quality control toolbox concept

In comfort control strategy there is an exciting development based on inclusive design: the user’s preferences and their behaviour have become central in the building services control strategy. Synergy between end-user and building is the ultimate in the

In recent years, the aspect and behavior inside a bathroom and an appurtenant changing room havebeen changing. With these changes, the thermal insulation quality of a dwelling has improved, so itseems that the amount of moisture generated in a dwelling has changed. In this study, amount ofmoisture produced in a bathroom and a changing room was surveyed in order to grasp the thermal andhumid environment in bathroom and a changing room. From the result of the survey, it was found thatthe amount of moisture in bathing was bigger than before.

Motorized sun-controlled louvers and electrically heated glasses are installed in NIKKEN SEKKEITokyo Bldg. A lot of highly effective equipment systems are set up in this building. In this research,these energy conservation systems are measured and analyzed. This report explains the specificationof the building, equipments, and the window system. . As a result, it was confirmed that the exteriorblinds and a heat generating double glazing was effective in keeping thermal environment comfortableand saving energy.

The concentrations of ozone, particles (PM10 and PM2.5) and ultra-fine particles were measured duringdriving the automobile and during standing. Two ventilation modes were prepared; 1) all fresh air modeand 2) all re-circulation mode. The windows of the automobile had been always closed during thismeasurement. The indoor/outdoor ratio of the concentrations and the correlation among thosesubstances were reported. The concentrations of particles (PM10 and PM2.5) and ultra-fine particleswere dramatically had been increased while the automobile followed the trailer bus.