WasteHeat.mo#

Information#

Package containing the waste heat Management system object (WasteHeatSystem) and model for the power load of waste heat management of Magnets, H&CD, Cryo and WaterDetrit (WasteHeatPower).

Model Description and Method#

The purpose of this model is to extract the waste heat from the air. It does this by taking in waste power from other models and performing a cooling with dehumidification calculation.

The settable user input values for this model are given, alongside their default values:

• Waste power from other models (1000 W)
• Height of room
• Length of room
• Width of room
• Efficiency of Waste Heat system (0.8)
• simulation stop time (60 s)

Assumptions#

• Cooling with Dehumidification process
• Steady flow process
• mass flow rate of air constant
• Air behaves and an ideal gas
• Kinetic energy and Potential energy negligible
• Heat transfer through floor is negligible
• If the waste power is under 5000 W, the dehumidification calculation is disregarded. This is due to several reasons.
  • The temperature difference is calculated using the waste power, and at low powers this can be very small.
  • The mass flow rate of the moisture in the air is calculated as a fraction of the mass flow rate of the air, and at these low powers it would dominate the calculation and give a negative overall power.