Indoor Air Quality Improvement by Simple Ventilated Practice and Sansevieria Trifasciata

Abstract

Optimum thermal comfort and good indoor air quality (IAQ) is important for occupants. In tropical region offices, an air conditioner is indispensable due to extreme high temperatures. However, the poor ventilation causes health issues. Therefore, the purpose of this study was to propose an improving IAQ method with low energy consumption. Temperature, relative humidity, and CO2 and CO concentration were monitored in a poorly ventilated office for one year to observe seasonal variation. The results showed that the maximum CO2 concentration was above the recommended level for comfort. Simple ventilated practices and placing a number of Sansevieria trifasciata (S. trifasciata) plants were applied to improve the IAQ with the focus on decreasing CO2 concentration as well as achieving energy saving. Reductions of 19.9%, 22.5%, and 58.2% of the CO2 concentration were achieved by ventilation through the door during lunchtime, morning, and full working period, respectively. Placing S. trifasciata in the office could reduce the CO2 concentration by 10.47%–19.29%. A computer simulation was created to observe the efficiency of simple practices to find the optimum conditions. An electricity cost saving of 24.3% was projected for the most feasible option with a consequent reduction in global warming potential, which also resulted in improved IAQ.

Computational fluid dynamic (CFD), air flow-droplet dispersion, and indoor CO2 analysis for healthy public space configuration to comply with COVID 19 protocol

“…The notorious of CFD is its ability to model the air flow behavior (Huang and Lin 2014, Pamonpol et al . 2020, Zhang et al .…”

A Model for Working Environment Monitoring in Smart Manufacturing

“…This real-time device proved to be capable of assessing IAQ values. In [39] an assessment of the envelope air permeability of the room was obtained by the infiltration rate calculated by an equation. In both [37,38] the same linear interpolation formula was used in order to the calculate index value of pollutant.…”

Benefits of Using Plants in Indoor Environments: Exploring Common Research Gaps

“…Different measures describing the exchange and the movement of the air within the testing space. Mentioned aspects include: air freshness (mean age of the indoor air [17]), natural ventilation [30], air speed (air flow [11], air velocity [16,26]), turbulence (use of a chamber fan [22,27], air direction [16]), airtight conditions [27,29].…”

“…Plants have been found to have climate-mitigating effects such as thermal [15] and humidity control [1,15,16]-as a direct consequence of the evaporative cooling, differential shade cooling and solar gain heating of the foliage canopies [16]-and also contribute to potential energy savings [17].…”