Well depends on how middle the middle east isPersian Gulf is only the most humid place in the worldIf your ventilation air is included in those rules of thumb you could be in trouble you could be 100 Btu per CFM of fresh airI am in a humid environment and 300 to 400 sqaure feet per ton would mean a sparsely populated office, like a person for every 300 to 400 square feet, so 1/4 to 1/3 the amount of office equipment you would expect, 1/4 to 1/3 the ventialtion load you would expectTake the 'V' out of HVAC and you are left with a HAC(k) job. RE: Cooling load - Rule of thumb (Mechanical) 12 Jan 09 17:08.
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Lighting, people, and heat conducted from the surrounding spaces will also contribute to the overall heat load. As a very general rule-of-thumb, consider no less than 1-ton (12,000 BTU/Hr / 3,516 watts) per 400 square-feet of IT equipment floor space. The equipment heat load can be obtained by identifying the current requirements for each piece of.