General strategies for cooling and heating loads:
Heating Loads:
1. Calculate ∑ UA (including slab edge and infiltration/ventilation) of items on first page to get an answer in BTU/(hr °F) or W/°C.
2. Multiply by design temperature difference.
3. The result is your raw uncorrected heating load [W].
Cooling Loads (all steps should be in [BTU/hr or W])
1. Calculate cooling load (similar to raw uncorrected heating load but using the cooling design temperature difference).
2. Calculate conduction through opaque surfaces (walls and roofs) which is typically done with a modified temperature difference.
3. Add solar gain through windows.
4. Add sensible internal gains.
5. The result is your raw sensible cooling load.
6. Calculate latent internal gains.
7. Calculate latent gains due to ventilation and infiltration.
8. The sum of 6 and 7 is your raw latent cooling load.
