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ORIGINAL RESEARCH
Integrated Analysis for Evaluating
Efficiency and Cost-Benefit of Indoor CO2
Improvement: an Innovative Approach
1
College of General Education, Chihlee University of Technology, Taiwan, No. 313,
Sec. 1, Wenhua Rd., Banqiao Dist., New Taipei City 22050, Taiwan
2
University of Technology, 1, Sec. 3, Chung-Hsiao E. Rd. Taipei City 106, Taiwan
Submission date: 2024-03-11
Final revision date: 2024-07-08
Acceptance date: 2024-08-23
Online publication date: 2024-10-21
Publication date: 2025-11-04
Corresponding author
Chao-Heng Tseng
Institute of Environmental Engineering and Management, National Taipei University of Technology, 2F-1, No.143, Sec. 1, Keelung Rd., Xinyi Dist., 110, Taipei City, Taiwan
Institute of Environmental Engineering and Management, National Taipei University of Technology, 2F-1, No.143, Sec. 1, Keelung Rd., Xinyi Dist., 110, Taipei City, Taiwan
Pol. J. Environ. Stud. 2025;34(6):6843-6856
KEYWORDS
computational fluid dynamicsindoor air quality (IAQ)carbon dioxideenergy recovery ventilation systemefficiency
TOPICS
ABSTRACT
This study contributes by emphasizing the effectiveness of indoor air quality improvement
technologies. Initially, it quantifies the outdoor air demand and proposes various combinations of ventilation
equipment and improvement strategies. Through flow field simulations, it anticipates optimal ventilation
configurations to ensure better mixing and dilution of introduced fresh air indoors. Furthermore, it
evaluates the costs associated with effective improvement technologies by assessing different improvement
schemes comprehensively, considering installation costs as well as long-term expenditures, including
operational and maintenance costs. The study reveals that Scheme 3 (Two ERV units) has the highest
installation cost but achieves the greatest improvement effectiveness. However, when evaluating across
other cost dimensions such as operational costs, maintenance costs, and improvement benefits, Scheme 2
(One ERV with one exhaust fan) emerges as the optimal choice. Scheme 2 demonstrates the best unit
cost improvement benefit at 0.77 ppm/US$, whereas Scheme 3 exhibits the lowest at 0.59 ppm/US$.
These findings underscore the importance of considering not only initial setup costs but also ongoing
expenses when assessing the benefits of indoor air quality improvement technologies, as these factors can
significantly influence decision-making regarding improvement measures.
CONFLICT OF INTEREST
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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| eISSN: | 2083-5906 |
| ISSN: | 1230-1485 |
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