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Saturday, 1 December 2012

Factors To Be Considered In Load Estimation Sheet For "Comfort" Application.



1. Load estimate sheets are designed for limited application with respect to building type,construction,                          internal  heat  gains and exposure.


2.Application of load forms require estimates of time peak loads or range of time of peak loading.

3. Commercial load forms are based on significant internal heat gains and relatively lower external heat gain.Do not use residential forms for commercial applications and vice-versa.

4. FW sunlit windows,doors and walls :
        a. Determine the exposure at peak load time.
        b. In calculating the solar load.orientation of wall is Critical.
        c. Walls--use wall area exposed to sun during the day.

 5. Transmission gain for walls,windows,doors and partition :
        a. Area to include all windows exposed to outside air.
       b. Partitions may be considered as shaded walls if no factor is listed.Partitions exposed to unusual conditions such as kitchen,boiler room etc,may be handled by multiplying partition factors by 2,if no special allowance factor is listed.

6. Internal heat gains
       a. Evaluate occupancy load carefully
      b. Adequate exhaust and hoods over appliances may reduce the loads from these appliances by as much as 50%
      c. Careful consideration should be given for lighting load , frequently this is the major internal load               particularly in office space or brilliantly lighted stores.

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