Ventilation Study

air conditioner Natural Ventilation/ opening

Cool Wind

Hot Wind

By law, clause-39, natural ventilation minimum requirement of 5% for natural ventilation

THERMAL ZONING

The area with direct sunlight zoning will gain more hear, whereas the best zone for user is the maximum illumination zone as it has moderate temperature and adequate lightings CALCULATION

Room area = LxW = 8.4 x 4.2 = 35.3 m2 = 115.8 ft3

by seventh schedule, accommodation is under purpose group vii, therefore occupant loads is 1.5 per sqm = 7.18 per sqft

by third schedule, it requires 0.14m3 of air per minutes per occupants = 4.94 CFM per occupant

No. of occupants = 115.8(room area in ft) / 7.18 = 0.294

Ventilation, CFM = 115.8 x 4.94 = 572 CFM

CFM to Tons 1 Ton of Cooling = 400 CFM 1 Ton of Cooling = 12000 BTU/hr

572(ventilation, CFM) / 400 CFM = 1.43Tons 13,389,600 / 12000 BTU/hr = 1115.8 BTU/hr

Cooling capacity of the air conditioner selected is 12000 BTU/hr Hence, No. of Unit Required = 115.8 / 12000 = 13,389,600

Proposed wall mounted air conditioner 1 unit of wall mounted series air conditioner is provided

Calculation for Natural Ventilation required = Total floor area x 5% = 35.3 m2 x 5% = 1.06 m2

Natural Ventilation provided = 2.32 m2 > (1.06m2)

LEMBAGA ARKITEK MALAYSIA

................................................ PROFESIONAL ARCHITECT

ASSOCIATED MECHANICAL ENGINEERS

CIVIL AND STRUCTURAL ENGINEERING

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