Comfort in air condition/luminance

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In these two scenarios the administrator of the smart room specifies the desired conditions in terms of air quality and luminance respectively. For instance, desired luminance could be set to 120 lux and the desirable air conditions to 25 oC temperature and 50% relative air humidity. The scenarios automatically try to combine information gathered from sensors deployed to the interior and the exterior of the smart room with the electromechanical actuators of the room in order to achieve and maintain the specified comfort levels. The administrator may also select the level of aggression (in terms of energy consumption) with which the room will try to achieve the desired comfort levels. That is a more aggressive effort will probably be more energy consuming (e.g. all lights will be on or the AC unit will operate for longer periods), while a more mild approach will try to achieve an energy efficiency vs comfort trade-off.

We evaluate three policies of HVAC control in an office building:

  • Global policy: Conditions in all offices are centrally controlled
  • 2-zone policy: Offices are separated in two zones
  • Distributed control policy: Using WSNs, conditions in each office are separately controlled
Results demonstrate important improvements in air-quality, adaptation to human presence and optimisation of the HVAC usage.

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