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Coincidental Peak Loads
Coincident means that the cabins of the "night-time" area and the "day-time" areas are air-conditioned at the same time. The heat load calculation considers the maximum load for each room.
For day-time areas; ie lounges, saloons, dinettes, galleys, wheelhouses etc. the peak load is generally between 13.00 and 15.00 hrs when the sun is at its height.
For the night-time cabins, the peak is generally reached in the first few hours of the night when there is still surplus day-time heat, and the cabin is at its maximum occupancy. Activity levels could also become the subject of further study into heat and moisture generation at these times, but this is not the time or the place!
To summarise; if the night-time area is to be air-conditioned at the same time as the day-time area, then sufficient cooling capacity should be installed to cover this. All quotations should be checked to ensure a "like for like" comparison of equipment offered.
Some equipment suppliers may refer to this as a diversity factor.
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