Form for approximate calculation of cooling load

Approximate cooling load of single rooms

An exact calculation according to the current VDI 2078 must be carried out separately and will not be replaced under any circumstances. The suggestions and calculations are based on average values; in case of deviating conditions or special features on site, the calculation must be carried out differently!

Please note, that the calculation cannot be used for rooms with ceiling heights of higher than 3,50 m.


Thermal ingress through vertical transparent surfaces with direct sun radiation (e.g. windows and outside doors)

Cardinal point Surface Sun screen Cooling load  
  m² = W/m²
W
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  Surface / number Multiplier Cooling load  
Maximum value for direct radiation  
W
Diffuse sunlight  m² W/m²
W
Windows in roof areas  m² = W/m²
W
Transmission through external wall north  m² W/m²
W
Transmission through remaining external walls  m² W/m²
W
Only non-air conditioned adjacent rooms  m² W/m²
W
Ceiling /roof  m² = W/m²
W
Floor non-air conditioned  m² W/m²
W
Number of people  W/person = W/person
W
Laptop / PC work stations  piece W/piece
W
Printer  piece W/printer
W
Input of lit basic area  m²
Light sources:
Lighting:
= W/m²
W
Other cooling loads  W

Total cooling load  
W