PERBEDAAN BESARAN PENCAHAYAAN ALAMI PADA DUA MODEL BUKAAN JENDELA Studi Kasus: Ruang Dasen Jurusan Teknik Sipil dan Perencanaan FT UNY

Abstract

Abstract
A window in building could have double function. The One, it can
permit outdoor air to flow across rooms. The other,it can permit daylight
or sun ray come into the room. The sum of illumination is determined by
some factors: form, size, position, and proportion between window and
room. Overdose of daylight will make air hotter andgJare. While low
daylight intention can make working not to pleasant. Thus, knowing what
is the good window shape is important.
This research used quasi-experiment method. The location one
is in one room of among civil and planning department lecturer rooms.
The object of research is the window of room, on the north side. The
window has been researched are the window with bouvenHcht and the
window without bouvenlicht. The Window without bouvenlicht is
constructed of fixed glass. While, the window \Nith bouvenlichtis the
same as one and it is separated by walL The dependent variable are
wide of window, intensity of sky illumination, the position of window and
points of measurements. The windows width of two models are 27.225
cm2 and 27.195 cm2. The sky illumination is 10.000 lux. The position of
window and the shape of room is fixed. The measurement was
conducted at 11.00 pm to 01.00 am, and it was used Luxmeter NT1332,
the production of Sanwa Electric Inst:-ument co. ltd.
The result of this research explain two thing. The first, there is
significant different in point 1 in al! line. The illumination of window
without bouvenlicht is higher than window with bouvenlicht. While in
point 2 until 6, the illumination of windo'lv without bouvenlicht is lower
than window with bouvenlicht. The second, comparing to illumination
standard for activities, there is no significant different in all line, because
the difference illumination is no more than 100 hundred lux, except at
point 1 line C.
Keywords: daylight, window shape. illumination