Comparative Analysis of CIBSE Admittance and ASHRAE Radiant Time Series Cooling Load Models

Due to the impacts of carbon emissions on climate change and expected dramatic increase in global cooling demand by 2050, it is a paramount importance that required energy cool buildings accurately predicted. This ensures equipment appropriately sized, which ultimately reduces consumption emissions. CIBSE ASHRAE standards are both widely adopted for load predictions, but they adopt different calculation methods, with adopting admittance radiant time series (RTS), produce significantly results load. study comparatively qualitatively evaluates RTS models analysing their structures key input parameters mock-up building identify inconsistencies between two methods. There were flaws within resulted method underpredicting load, whereas typically overpredicting it. maximal average difference over 60%. The substantial predicted was mainly caused model, highly receptive solar gains, consequently led overprediction when compared model.