Environmental Adjustment Systems of Honda Wako Building

摘要

"Honda Wako Building (hereinafter called HWB)" is a high efficiency saving energy office building with six floors having 52,138-m~2 of total floor area. Honda Motor Co., Ltd (hereinafter called Honda Motor) required reducing 50 % of emission of life cycle CO_2 as compared with a standard building at the design stage. To realize energy saving building, the architectural plan has two distinguishing characteristics.Firstly, both of whole of south and north of facade consist of low-e coating glassesand aluminum panels. Secondly, HWB has the following three atriums, a south side atrium of five floors along the facade (Fig 2), a north side atrium of four floors along the facade and a center atrium of six floors (Fig 3). The two office spaces are located between three atriums. These atriums provide a thermal buffer effect against exterior environment with the distance between the office space and the windows to realize perimeter-less air-conditioning.Moreover, high efficiency centrifugal chillers and large temperature differential system are used as energy saving systems.The above saving energy systems got result the annual energy consumption was 15-20% less than the average of the latest office buildings with more than 40,000-m~2 of total floor area in Japan (ECCJ, 2006).