Kindly size up the units using CLTD.
Area (UPS room): 1st floor (27 sqm, ceiling height 3m) x N + 1 air-cooled wall mounted split unit
Room requirement: RH 45% +- 10%; 21 deg C +- 1 deg C
Design criteria:
lighting: 20W / sqm
occupancy: 90W sensible & 40W latent
Small power load: 40W/sqm
Heat load 60 kVA UPS
16 L/s /person
10 sqm/person
air movement should be maximum 0.25m/s at 1800mm
Deadline for submission: 8/8/07, 8.30a.m
Tuesday, July 31, 2007
ACR3933 - 1ST ASSIGNMENT
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4 comments:
Sir,
Regarding about assignment, CLTD Method required to use U-factor, so is it any data on wall u-factor. in your question mention about : air movement should be maximum 0.25m/s at 1800mm, what mean by 1800mm?infiltration?
Thanks,
Nor Firdaus Yunus
ACIR 7
0124840079
nor_firdaus@yahoo.com
You can use any data for U-factor, as long as you mentioned in your submission.
The 1800mm is the height to have that air movement.
Sir,
What is the "N+1" means? Is it facing 'north' or something else?
Regards,
Ahmad Farid
ACIR7
N means number of duty units + 1 means 1 standby unit.
If you need 3 duty units, meaning that you have to install 3 units (N) as duty and 1 standby unit.
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