Ventilation Rates and Unsatisfied Percentage from Indoor CO 2 Concentration

This research investigated resident behaviours in relation to kitchen ventilation in residential buildings in order to improve kitchen indoor air quality (IAQ) in South Korean living spaces. The research involved a survey study of 182 households, which identified resident behaviour with respect to ventilation, their satisfaction level regarding the IAQ, and their use and maintenance of range hoods in the kitchens. This paper describes the kitchen CO2 concentrations with both natural and mechanical ventilation. The adequacy of the ventilation behaviour was determined by monitoring the CO2 concentration and ventilation behaviours in 10 sampled households of residential buildings. The results showed that natural ventilation was conducted for less than 20 min once a day and that 23.3% of respondents used both natural ventilation and mechanical ventilators. Moreover, the results demonstrated that mechanical ventilators were not properly maintained. In addition, the average CO2 concentration was greater than 1000 ppm during cooking, and natural ventilation was more effective than were mechanical ventilators. Most residents performed inadequate kitchen ventilation to achieve comfortable IAQ. This study suggests ways to improve the ventilation behaviours of residents. The findings of this research should aid in the development of IAQ standards for Korean residential buildings and may contribute to the establishment of ventilation guidelines.

Section: Introductionmentioning

confidence: 99%

The Improvement of Ventilation Behaviours in Kitchens of Residential Buildings

Lee

Park

et al. 2011

“…Moreover, under the same ventilation conditions, the elderly are more dissatisfied with the air quality than the young. 41 Due to physiological differences, the elderly are often troubled by dry skin caused by uncomfortable indoor hot and humid environment. 42 The same is true for the elderly in the RCFs.…”

Section: Discussionmentioning

confidence: 99%

Evaluating the objective and subjective physical environments of residential care facilities

Kang

Zheng

2023

The aim of this research was to explore the objective and subjective physical environments of residential care facilities (RCFs) by studying 34 facilities in Harbin, Changchun, Shenyang and Dalian. A study that combines questionnaires and instrumental testing. Pearson’s correlation and regression analysis were used to analyse the correlation between the measured value and the evaluation result and the impact on the results of the participants’ personal background evaluations. The results showed that the brightness intensity ranged from 100 to 450 cd/m2, illuminance 200–550 lx and sound pressure level (SPL) 40–58 dBA. In reconstructed RCFs (RCFs converted from other buildings), the odour and other factors were significantly positively correlated with the satisfaction of participants. Seasonal changes had a significant impact on the level of different physical environments, particularly in the assessment of the thermal environment. Temperatures were highest in bedrooms, reaching 27°C. The correlation between the measured value and the evaluated satisfaction was high. The education level of participants was related to their satisfaction with the overall Indoor environmental quality (IEQ). Participants in the study were satisfied with the overall IEQ of the RCFs. These results can provide data-based support and act as a reference for IEQ research on RCFs.

“…For example, there are domestic electricals (e.g., cooker and fridge), household items (e.g., taps, bed and sofa), temperature handling devices (e.g., air conditioning, radiators) etc. The benefits of these devices may consist in: (1) raising safety and security by monitoring lifestyle patterns or the behaviours and providing support, should a possibly harmful situation occur; (2) providing comfort by controlling temperature and ventilation [21,22] automatically; (3) enhancing economy by adjusting unused lights [19].…”

Section: Smart Home Servicementioning

confidence: 99%

The Service Pattern-Oriented Smart Bedroom Based on Elderly Spatial Behaviour Patterns

Lee

Park

Kim

et al. 2012

This paper stresses the importance of the service patterns matching the behaviours of residents in improving comfort, safety, convenience, etc in homes for the aged. The paper particularly focuses on the smart services (SVs) a bedroom can provide for the elderly. This paper derives three service patterns (SVPs) based on the elderly spatial behaviour patterns (SBP). The first pattern is SVP1 (intrusion/theft prevention → temperature/humidity control → health care/emergency system) for solving potential problems during sleep in mobility and cognition of the elderly. The second pattern is SVP2 (temperature/humidity control → health care, medical examination → smart furniture) for controlling interior environmental conditions such as temperature, humidity, ventilation, lighting, etc. The final pattern is SVP3 (entertainment → remote control, smart furniture → intrusion/theft prevention → temperature/humidity control, lighting control → health care, emergency call) that offers entertainment and leisure for the elderly to relieve their loneliness. Suggested service patterns largely place a great deal of weight on such aspects as comfort, health and emergency, because smart technologies are included for the convenience of old people who are fragile from physical, psychological and social perspectives. All service patterns provide a healthy management of the elderly. Moreover, each service pattern can be customized to behaviour patterns determined by habit, lifestyle and needs.