Version 1
: Received: 21 June 2023 / Approved: 21 June 2023 / Online: 21 June 2023 (07:13:19 CEST)
How to cite:
Zhang, D.; Zhang, L. Experimental and Simulation Research on Indoor CO2 Removal Efficiency and Fresh Air Energy Savings of Living Walls in Office Spaces. Preprints2023, 2023061489. https://doi.org/10.20944/preprints202306.1489.v1
Zhang, D.; Zhang, L. Experimental and Simulation Research on Indoor CO2 Removal Efficiency and Fresh Air Energy Savings of Living Walls in Office Spaces. Preprints 2023, 2023061489. https://doi.org/10.20944/preprints202306.1489.v1
Zhang, D.; Zhang, L. Experimental and Simulation Research on Indoor CO2 Removal Efficiency and Fresh Air Energy Savings of Living Walls in Office Spaces. Preprints2023, 2023061489. https://doi.org/10.20944/preprints202306.1489.v1
APA Style
Zhang, D., & Zhang, L. (2023). Experimental and Simulation Research on Indoor CO2 Removal Efficiency and Fresh Air Energy Savings of Living Walls in Office Spaces. Preprints. https://doi.org/10.20944/preprints202306.1489.v1
Chicago/Turabian Style
Zhang, D. and Lei Zhang. 2023 "Experimental and Simulation Research on Indoor CO2 Removal Efficiency and Fresh Air Energy Savings of Living Walls in Office Spaces" Preprints. https://doi.org/10.20944/preprints202306.1489.v1
Abstract
Elevated indoor CO2 levels might have adverse effects on human health. However, the introduction of outdoor air to lower indoor CO2 concentrations results in significant HVAC energy consumption. Aligning with office hours and the natural light cycle, the utilization of photosynthesis in living walls offers an energy-efficient and sustainable solution for the mitigation of high CO2 levels in office spaces. This study experimentally investigates the impacts of the carbon fixation pathways, light intensity, and substrate moisture content on the CO2 removal rate of living walls at the room scale. Furthermore, the fresh air energy-saving effects of living walls under different scenarios are accurately simulated in EnergyPlus. The results demonstrate that choosing C3 plants over CAM plants in living walls yields higher CO2 removal efficiency. In a 30-m2 office room accommodating 2-3 occupants, living walls can reduce the demand for fresh air by 12.3%-27.8% and decrease fresh air energy consumption by 11.2%-28.2%. The city with the highest energy savings has energy savings that are 4.5 times greater than those of the city with the lowest energy savings. The findings of this research promote the application and development of living walls, thus providing a viable solution for improving indoor air quality.
Keywords
CO2 concentration; living walls; fresh air energy consumption; Energyplus; indoor air quality
Subject
Engineering, Architecture, Building and Construction
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
