Development of simulation-based strategy for mixed-mode operation of buildings
Harshal Singh*, Maddali Ramgopal
IIT Kharagpur, Kharagpur, India
DOI: 10.62744/CATE.45273.1129-269-277
Email: 22420.harshal@gmail.com
Abstract:
This study examines optimal operation strategies for mixed-mode buildings located in 8 tropical Indian cities. In order to evaluate the potential for mixed-mode operation, a small, single storey building with provision for natural ventilation (NV) is considered. The building performance is simulated using OpenStudio-EnergyPlus. EnergyPlus Typical Meteorological Year (TMY) data is used for generating the results. Depending upon the predicted inside conditions, decisions are taken whether to operate the building in non-air conditioned mode or air conditioned mode. PMV-PPD based thermal comfort model is used when the building is operated in air conditioned mode, while suitable adaptive thermal comfort model is used when the building is operated in non- air conditioned mode. An algorithm for optimal mixed-mode operation is developed, utilizing simulation data to guide window usage and HVAC systems. The algorithm enables users to input location, date, and time to determine whether to keep windows open or closed and whether to use mechanical cooling or heating systems. Results show that mixed-mode operation has a huge potential for saving energy without sacrificing thermal comfort.
Keywords: Mixed-Mode Buildings, Thermal Comfort, Algorithm, OpenStudio-EnergyPlus, Indian Tropical Climate