User comfort analysis of inkjet-printed electrochromic glass

Abstract

This thesis investigates the performance of inkjet-printed electrochromic (EC) glass compared to traditional triple glazing with roller shades in an office setting in the Netherlands. The study aims to assess thermal and visual comfort, via a live experiment conducted in a controlled environment. Key performance indicators (KPIs) include thermal sensation & preference, solar heat perception & satisfaction, (day)light adequacy, colour rendering satisfaction, view clarity satisfaction, and glare perception. Results indicate that EC glass outperforms traditional glazing in maintaining thermal comfort, particularly in darker scenarios, although both glazing types keeping room temperatures within a comfortable range. Visual comfort results are mixed; EC glass provided better daylight sufficiency in low-light conditions, while traditional glazing offered better performance in bright conditions. User satisfaction regarding colour rendering and glare did not show significant differences between the two façade types. This study was limited to the winter period of the Dutch climate. Ideally, to obtain a complete picture of the performance between both facades, this experiment should be conducted again during the summer period or in a warmer climate.