Calculate the whole-house design cooling load (both sensible and latent loads), using the residential load factor method. 23.0 +2.4 6.1 7.3 1.2x1.8 |0.9×0.9 1.8x2.4 0.9x2.1 MASTER BEDROOM BATH LIVING ROOM GARAGE BATH 0.9x2.1 BEDROOM 2 BEDROOM 1 KITCHEN AND DINETTE UTILITY 1.2x1.2 1.2x1,2 1.2x1.2 0.9x0.9 0.9×2.1 Z'LXZ'L CLOSET STORAGE AND SHOP

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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Given: Project Description A single-family detached house with floor plan shown in Figure 1 is located in Charlotte, NC (Latitude: 35° N). Ceiling height is 2.4 m. The garage is unconditioned while all other spaces are conditioned. The house has the following construction characteristics: Roof: Attic roof with asphalt shingles Ceiling: Flat wood-frame ceiling with blow-in fiberglass insulation, U-factor= 0.18 W/m2-°C Doors: Wood, solid core doors, U-factor = 0.51 W/m2-°C Floor: Slab-on-grade floor with heavy carpet over rubber pad (Thermal resistance of floor covering Rcvr=0.21 m2*°C/W); R-0.9 edge insulation to 1 m below grade; Fp= 0.85 W/m-°C; Windows: All windows are clear double-pane glass in vinyl frames The window in the living room is a fixed picture window. All other windows are vertical sliding windows operable with insect screens White roller interior shades, half closed Overhang: eave overhang along all four sides of the house; overhang depth = 0.6 m; eave edge at the same height as top of glazing The wall between garage and other spaces has the same construction as exterior walls. The design conditions for this house: Indoor temperature: 20°C for heating; 24°C for cooling Indoor relative humidity: 50% for cooling; no humidification Wind speed: 24 km/hr for heating; 12 km/hr for cooling Infiltration: 0.3 ACH for heating; 0.15 ACH for cooling Ventilation: no mechanical ventilation Charlotte weather information 99% design dry-bulb temperature: -3.9°C 1% design dry-bulb temperature: 32.8°C Mean coincident wet-bulb temperature corresponding to 1% design dry-bulb temperature: 23.2°C Mean daily temperature range: 9.9°C A split HVAC system is used for this house. Duct runs in the attic. Assume duct distribution loss factor is 0.13 for heating and 0.27 for cooling.

Calculate the whole-house design cooling
load (both sensible and latent loads), using
the residential load factor method.
23.0
-2.4
6.1
7.3
1.2x1.8
0.9x0.9
1.8x2.4
0.9x2.1
MASTER
BEDROOM
BATH
LIVING ROOM
GARAGE
BATH
0.9x2.1
BEDROOM
2
KITCHEN
AND DINETTE
BEDROOM
UTILITY
1.2x1.2
1.2x1.2
1.2x1.2 0.9x0.9
0.9x2.1
Figure 1. House floor nlon
7'LX7'L
[ CLOSET
STORAGE
AND SHOP
Transcribed Image Text:Calculate the whole-house design cooling load (both sensible and latent loads), using the residential load factor method. 23.0 -2.4 6.1 7.3 1.2x1.8 0.9x0.9 1.8x2.4 0.9x2.1 MASTER BEDROOM BATH LIVING ROOM GARAGE BATH 0.9x2.1 BEDROOM 2 KITCHEN AND DINETTE BEDROOM UTILITY 1.2x1.2 1.2x1.2 1.2x1.2 0.9x0.9 0.9x2.1 Figure 1. House floor nlon 7'LX7'L [ CLOSET STORAGE AND SHOP
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