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The ITS Research Center (RC) building as one of the new buildings in ITS has a unique architecture compared to ITS building architecture in general. The shape of this architecture is interesting to study because the side of the building facing north and south is the majority of tinted glass, which is given a frame on the left and right sides with a thickness of 4 meters each. The wall protrudes inside with a certain slope angle, so that it protects the glass window from solar radiation (from the east and from the west) directly. The 11th floor sheath is tinted glass that curves downward with a certain tilt angle, so it can provide a shade effect on the glass floor below. This type of building design is a passive design (one of the green building methods) to reduce thermal transfer through the building envelope. Thermal transfer through the envelope of the Research Center building will be presented in this paper, through the calculation of overall thermal transfer value (OTTV) covering the north and south side of the building from the second floor to the 11th floor. The covering from the 3rd to the 10th floor consists of spandrel, tinted glass and parapet, while the sheath on the 2nd and 11th floors is tinted glass. The calculation results show that the total OTTV from the north and south side of the building envelope is 6.18 Watt / m2, this shows that the design of ITS research center building architecture is effective in reducing the thermal transver through the sheath.

Passive design (building envelope) impact to cooling load of researh centre building ITS