Abstract
Ceiling Plenum Building Structure Thermal Storage (CP-BSTS) HVAC system is a system, which utilizes building structure such as beams, columns and floors composed of concrete as a thermal storage device. Its ceiling plenum is a chamber to which cold air is supplied for storing heat in the structure at night in summer. It has been recently taken up as a technique to level hourly electricity demands for HVAC in a day. This paper describes how various factors for the design and operation of the CP-BSTS HVAC system quantitatively affect the charge/discharge performances of its system through some experiments. The results can be obtained as follows:1) The average charged heat is 347kJ/m2 (flour area) for 5 heat storage operation hours and 190 kJ/m2 for 2.5 hours respectively.2) The significant factors for the charged heat are heat storage operation hours, supply air volume and supply air temperature.
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