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How to calculate the two parameters in the red box about Required ventilation rate and Calculated CO2-loss?

I dont know how to calculate the two parameters.I think The total energy of the light is 700w/m2*3600s=2520Kj,then I will not do it.
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Refrigerator temperature - compartment gas volume exchange, time to equilibrate?

I open the door for 30s of a 140L capacity 80W (240VAC, 0.8A) barfridge with a 20L freezer compartment (partition open to main compartment at one end) at a temperature of -5℃ with an internal main ...