THUMB RULE FOR AIR CONDITIONING LOAD CALCULATION for bangladesh

THUMB RULE FOR AIR CONDITIONING LOAD CALCULATION

For Bangladesh

The average air-conditioning load (for places other than auditorium, cinema halls, conference Hall etc.

(a) can be estimated on the basis of floor area of 150 sq. feet per refrigeration ton i.e. 150 ft²/RT.This thumb rule is applicable for spaces with insulated roof or intermediate floors with occupancy = 6sq. Meter per person, power & lighting level = 20 watts per sq. meter and external glazing area of the order of 15% of floor area (For 10 feet height).

(b) For auditorium, Cinema Halls or Large public places, the thumb rule is to use 1 RT for 5 persons or 1 RT per 11 sq.m of floor area having standard height of 12 feet.

Note:

i) Due to location of the room & partition wall, Location of the window towards the direction of the sunlight, in case of glass wall above thumb rule may vary case to case.

ii)  A/C with HEPA Filter shall be used in OT, ICU, CCU and Recovery Rooms of a Hospital.

iii) Adequate positive Air flow as per BNBC shall be maintained in OT, ICU, CCU and Recovery  Rooms of a Hospital

Source: PWD Schedule 2014.