Question

For a 400 m-area concrete middle floor office space of a muti-story office building located in Barcelona, Spain; that is operating from 8:00 a.m. till 4:00 p.m. with 100 m west facing glass and 40 occupants. The space has carpeted floor, one exposed wall, interior gypsum partitions, and drop ceiling find the following @ 3:00 p.m.: a). Cooling load due to Glass (conduction, solar, total). b). Cooling load due to Occupants (sensible and latent). c). Cooling load due to Lighting system. d). Cooling load due to Ventilation (sensible and latent). e). Heating load for the Space. Assum the following conditions: Summer outdoor design af 1%, and; Indoor: T - 24° C and 50% RH; Winter outdoor design at 99%, and, Indoor: T-22° C and 50% RH; U-wall- 1.4 W/m2.K, U-glass= 5.7 W/m2.K, and SC -0.75; Lighting heat gain (LPD): 20 W/m2; Supply temperatue Ts= 130 C; Ventilation as per ASHRAE Standard considering number of people and space floor area.

Answer 1

of Given that, According to the question we have that 400m - aran operating from soo am to 4100 per with room west faire wor occupants find the following at the time of 3.00pm a) finding cooling lead due to Glass, conduction esos, To find : taal low, plass & we have a conclition for cooling load due condition :- is vxAXAT. from the given glass u is 5.700mk. alow substitution = 1.0x400x10.76×(9.2 39596.6 Btu/hr & Solar. Axsexsel - 400x10.7680 75x1.0 3228 stolar b) finding cooling lead clue to Oce upanta (sensible, and a elow at first finding for sensible is - People xags we know we have 40 people = 40x295 = 11800 Btu/kr.

Now finding for the latent hat we have formula latent - People & yos - 40 x 205 8200 Blolha c) finding the cooling load due to lighting system. we have formula for cooling load due to lighting system. - Ax lighting load & Ballast vector x 3.41 from the above assumptions faleinz all the values and substituting in above Assumptions are given in question. xlow 200 x 20 x/ 341 - 8000 + 3.41 - 21280 Brother I finding the cooling load due to ventilation (sensible alate slow cooling load due to ventilation. a coxs - 200 - 400 x 10.16x006-258.29. for finding the Ventilation lead - 200 + 258.29 458:19