Passive Cooling Strategies in Summer for Office Buildings in Temperate Clear Sky Climates: Assessment of Effectiveness With Zero-Energy Building Criteria

D´AMANZO, MICAELA; ANDREONI-TRENTACOSTE, SOLEDAD ELISA; MONTIEL, VIRGINIA; BETMAN, ALICIA; GANEM-KARLEN, CAROLINA

ASME Journal of Engineering for Sustainable Buildings and Cities

The American Society of Mechanical Engineers, ASME

Lugar: Washington DC; Año: 2023 vol. 4

2642-6641

Passive energy-efficient design in temperate climates with clear-sky conditions and highsolar radiation can lead to a significant reduction in energy use while promoting occupantcomfort. This paper presents an optimization of the performance of an office building with amixed-mode run, including night ventilative cooling and shading strategies in summer. Theobjective is to assess their effectiveness with zero-energy building criteria. The buildingdesign integrates an efficient envelope and renewable energy generation from photovoltaicsolar panels on-grid. On-site measurements were taken to collect hygrothermal data andenergy demand information. Two office configurations were discussed, open plan and individual office, both options with a high trend to overheat. For all orientations tested, multiplehorizontal overhangs have better performance than vertical ones. Results from the netenergy balance in the base model present a primary energy demand of 116 kWh/m2/yearand the optimization model of 55 kWh/m2/year. To conclude, the positive impact of theimplementation of passive design strategies rises the comfort hours in-use period in theopen plan office a 70% and in the individual office a 55% and a decrease of 60% ofprimary energy demand