Controlled adjustments of indoor microclimate parameters for building's energy demand management

Arseniy Sleptsov, Alexander Ryzhov, Ilia Luchnikov, Ashkan Haji Hosseinloo, Henni Ouerdane, Aldo Bischi

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Indoor air quality and thermal comfort are regulated by heating, ventilation, and air-conditioning (HVAC) system modules, which play an increasing role in integrating buildings into future energy networks as active nodes permitting flexible consumption management. A building's HVAC devices are controlled by automation and control systems consisting of basic and supervisory control layers. Local discrete-mode controllers of HVAC system devices, which receive control signals proposed by a supervisory control method, cause a performance gap between these control layers. Here, we study the performance gap of discrete-mode controllers and examine how such controllers can maintain set-points, using simulation studies developed in the TRNSYS software environment. Considering a set of different devices operating within one room to manage its indoor air temperature and quality, we show that coordination of their discrete-mode controllers may yield a sizeable, larger than 10%, reduction of the heat use and average thermal load. However, such coordination may also entail indoor comfort violation, meaning that there should be a trade-off between comfort and energy performance. We propose controlled adjustments of indoor microclimate parameters to manage heat use (kWh) and thermal load (kW) within demand-side management programs. According to our simulation studies for discrete-mode controllers, the heat use and average thermal load may be reduced by up to 14.1%, ceding the indoor temperature set-point profile by 1 °C and the proportion of fresh air in the room by 50%. Hence, the controlled adjustments of various indoor microclimate parameters would be an excellent approach for integrating HVAC system field devices with discrete-mode controllers, and thereby buildings, into future energy networks providing them extra flexibility.

Original languageEnglish
Pages (from-to)216-224
Number of pages9
JournalEnergy Reports
Publication statusPublished - Sep 2021


  • Building energy performance
  • Demand-side management
  • Discrete-mode controller
  • HVAC system control
  • Indoor air quality
  • Thermal comfort


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