Performance Analysis of Indoor Smart Environmental Control Factors: Using Temperature to Control the Rate of Formaldehyde Emission

Chih Yuan Chang,Sy-Jye Guo,San-Shan Hung,Yi-Ting Lin

doi:10.1109/access.2019.2950142

Chih Yuan Chang, Sy-Jye Guo + Show 2 more

Open Access

https://doi.org/10.1109/access.2019.2950142

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Journal: IEEE Access	Publication Date: Jan 1, 2019
Citations: 7	License type: CC BY 4.0

Affiliation: Feng Chia University, National Taiwan University

Abstract

Formaldehyde is one of the indoor air quality pollutants produced by indoor decoration. The World Health Organization has listed Formaldehyde as a primary carcinogen. Wood planks for house interior decoration are common sources of formaldehyde. Based on the technology research and development of monitoring and control of the smart home, the air quality should be effectively improved through emission and suppression. This study uses extremely unventilated student renters in Taiwan as simulation spaces. Two classes of wood plank construction materials, F1 and F3, which are classified according to as different concentrations of formaldehyde standard board grades by Taiwanese. Through three different temperature control experiments, each group of experiments use electrochemical formaldehyde detectors to measure at least two consecutive days of data to analyze the influence to which temperature, the control factor, affected formaldehyde emission rate. The results revealed that the F3 class wood planks can increase the rate of formaldehyde emission through heating, which has a significant effect on home environment control, but they need a temperature below 10 °C to barely maintain within the regulations in Taiwan. The F1 class wood planks have an emission rate of nearly zero in a low-temperature environment due to its low formaldehyde emission. The emission rate of the F1 in a high-temperature environment is not as effective as the F3. The addition of experimental data can be used as a reference basis for AI decision making, which is conducive to the establishment of indoor intelligent control systems.

Highlights

Formaldehyde, HCHO, is one of the most common toxic pollutants found in indoor air
On the base of formaldehyde emission rate which be found from this research, indoor formaldehyde problems can be controlled by intelligent temperature control system and air-interchange system, especially the houses located in the temperate and subtropical zone
This study investigated how temperature affected the formaldehyde emission rate by wooden materials

Summary

Introduction

Formaldehyde, HCHO (formaldehyde chemical formula), is one of the most common toxic pollutants found in indoor air. Formaldehyde, as one indoor air pollutant, has attracted more and more attention because of its underlying influence upon human comfort and health when presenting at a high concentration (900 μg/m3) [2]. Its classification as a human carcinogen by the International Agency for Research on Cancer in 2004, the EU in 2015 has given rise to further studies into possible indoor. Emission sources and the World Health Organization listed formaldehyde as a Group 1 carcinogen [3], [4]. Even exposure to low concentrations of formaldehyde can cause health hazards, resulting in damage to their central nervous systems, immune system and abnormal stimulation of the neural network that controls normal stable reaction [5]–[8].

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