Paper Conference

Proceedings of ASim Conference 2014: 2nd Asia conference of IBPSA-China, Japan, Korea


Radiant Cooling : A Case Study of Energy Savings and its Enhancement in an Office Building

Vaibhav Rai Khare, Yasin Khan, Jyotirmay Mathur, Mahabir Bhandari

Abstract: The paper presents the assessment of energy savings of a radiant cooling system installed in an Information Technology (IT) office building in a composite climate of Hyderabad, India. The radiant system consists of both floor and roof mounted tubular installations and is coupled to a Fan Coil Unit (FCU) to meet the latent load requirements of the conditioned space. Based on the building characteristics, system parameters and a few modeling assumptions, the thermal performance and energy consumption of the building was simulated using ANSYS FLUENT and EnergyPlus software. To ensure the accuracy of the building energy model, it was calibrated using the measured data. The calibrated building energy model was modified, by replacing the current radiant cooling system with a conventional all air system, for comparing the performance of these two HVAC systems. To further study the additional energy savings potential of the existing radiant cooling system, the simulation was carried out by replacing the FCU's with an integrated Dedicated Outside Air System (DOAS) and Heat Recovery Wheel (HRW) in of the calibrated model. The results show 21% energy savings of radiant systems over conventional system and an additional potential of 15% savings using DOAS in place of FCU.
Keywords: Radiant Cooling System, Building Energy Simulation, Energy Saving, EnergyPlus, CFD.
Pages: 886 - 893