Investigation on Radiative Load Ratio of Chilled Beams on Performances of Solar Hybrid Adsorption Refrigeration System for Radiant Cooling in Subtropical City

Abstract

The effectiveness of solar adsorption system for space conditioning would be enhanced through radiant ceiling cooling, since a higher chilled water temperature can be supplied. In such provision, desiccant dehumidification should be involved in order to cater for the latent cooling load. A solar hybrid adsorption refrigeration system is therefore formulated. In this study, the effect of radiative load ratio R of active chilled beams (ACB) and passive chilled beams (PCB) for the solar hybrid adsorption refrigeration system was investigated. Through the year-round dynamic simulation, it was found that the performances, like solar fraction and primary energy consumption, of the system with ACB or PCB would be improved along with the decrease of R from 0.3 to 0.1. At the same R, the system with PCB would have better performances than that with ACB. With suitable design and control, the solar hybrid adsorption refrigeration system with PCB at low R would be more technically feasible for office use in the subtropical climate.