Air-conditioning load estimation

The cooling load to maintain steady temperature and humidity in 

Heat leakage through the fabric by conduction from warmer surroundings 

Heat gain by radiation through transparent surfaces - usually solar but occasionally by other means (radiant heat from a process, such as furnaces) 

Heat gain by forced or natural convection - air infiltration and fresh air supply - sensible and latent heat 

Internal heat sources - lights, people, machines, etc. - sensible and latent heat 

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