Metabolic heat from occupants and dissipated heat from appliances
Hourly and weekly schedules of heat flow rate for metabolic heat from occupants, and dissipated heat from appliances, are determined, as a function of building use, occupancy class. For cove.tool's simulation method the thermal radiative and convective portions are each 50 %, unless otherwise stated.
Dissipated heat from lighting devices
The value for the internal heat flow rate from lighting is the sum of the following.
The value for the internal heat flow rate from the light fixtures, calculated as a fraction of the energy use of lighting systems calculated in accordance with the relevant standard . A fraction less than 1 is allowed in the case of heat being directly removed by exhaust ventilation via the light fixtures. If (part) of the exhaust air is recirculated, this heat shall be accounted for as a heat source in the ventilation system.
The value for the internal heat flow rate from other lighting elements that are not covered in the previous category, such as decorative lighting, removable lighting, special-task lighting, building-grounds lighting, process-related lighting. For these other lighting elements, values are specified based on building type and energy code. For our simulation method the thermal radiative and convective portions are each 50 %, unless otherwise stated.