Paper Conference

Proceedings of BSA Conference 2017: Third Conference of IBPSA-Italy


Implications of Increasing Daylighting in Deep Energy Retrofitting in Norwegian Shopping Centres

Matthias Haase, Andreas Ampenberger

Abstract: The analysis of 11 shopping centres in Europe reveals a lack of availability of indoor natural daylight, especially in shops and sales areas. The aim of this paper is to investigate the consequences on energy consumption and electricity use for lighting that novel retrofitting measures have when applied to Norwegian shopping centres (Haase et al., 2015a). Internal daylight and internal illuminance levels were measured in two shopping centre buildings in Trondheim and Modena together with detailed monitoring of energy use and indoor air quality. Scenarios were modelled to simulate the artificial lighting use patterns and control strategies in the shopping centres by considering occupancy hours and type of activity (illuminance levels), in order to cover different possible combinations used in the energy and daylight simulations. Existing conditions of shopping centres (pre-retrofitting) in Trondheim, Norway were modelled based on drawings and validated with energy use measurements. Energy and daylighting simulations were performed and combinations of use pattern scenarios and facade variables were used to evaluate the influence on the electricity use for lighting and energy use for heating and cooling of the different scenario combinations. There is a trade-off, which is quantified in terms of reduction in electricity use and cooling demand as well as an increase in heating demand. The implications of lighting retrofitting on heating and cooling (aside from the end energy use savings) make the application complicated in shopping centres. Modelling and simulation of a shopping centre can help us understand the holistic consequences of single energy retrofitting measures.
Pages: 19 - 25