Effects of setting up of humidifiers on thermal conditions and subjective responses of patients and staff in a hospital during winter

Hashiguchi, Nobuko; Hirakawa, Megumi; Tochihara, Yutaka; Kaji, Yumi; Karaki, Chitake

doi:10.1016/j.apergo.2007.05.009

Cited by 26 publications

(10 citation statements)

References 18 publications

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“…Some intervention studies have shown that an increase of RH may alleviate the perceived dry air. [47][48][49] Others, however, have shown that perceived dry air is not necessarily associated with the actual air humidity. 50 Instead, perceived dry air can indicate the presence of air pollutants.…”

Section: Discussionmentioning

confidence: 99%

Associations of indoor carbon dioxide concentrations, air temperature, and humidity with perceived air quality and sick building syndrome symptoms in Chinese homes

et al. 2021

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The indoor environment influences occupants' health. From March 1, 2018, to February 28, 2019, we continuously monitored indoor temperature (T), relative humidity (RH), and CO 2 concentration in bedrooms via an online system in 165 residences that covered all five climate zones of China. Meanwhile, we asked one specific occupant in each home to complete questionnaires about perceived air quality and sick building syndrome (SBS) symptoms at the end of each month. Higher CO 2 concentration was significantly associated with a higher percentage of perceived stuffy odor and skin SBS symptoms. Higher relative humidity was associated with higher percentage of perceived moldy odor and humid air, while lower RH was associated with a higher percentage of perceived dry air. Occupants who lived in residences with high RH were less likely to have mucosal and skin SBS symptoms (adjusted odds ratio (AOR): 0.73-0.78). However, the benefit of high humidity for perceived dry air and skin dryness symptoms is weaker if there is a high CO 2 concentration level. K E Y W O R D SCO 2 , home, odors, perceived dry air, relative humidity, sick building syndrome | 1019 HOU et al.

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Section: Discussionmentioning

confidence: 99%

Associations of indoor carbon dioxide concentrations, air temperature, and humidity with perceived air quality and sick building syndrome symptoms in Chinese homes

et al. 2021

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“…Two studies carried out by Hashiguchi et al in 2008 [15] and 2005 [16], focused on patient and staff thermal comfort, performed in situ measurements in patient rooms, nurse stations and corridors in winter. The levels of relative humidity were in the range of 29-37% and the humidity ratio stayed around 5 g/kg over a 24 h period, values known to promote the spread of influenza viruses.…”

Section: Introductionmentioning

confidence: 99%

Experimental Data and Simulations of Performance and Thermal Comfort in a Patient Room Equipped with Radiant Ceiling Panels

et al. 2020

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Hospitals require the highest energy demands in non-residential buildings. They provide healthcare 24/7/365 and, at the same time, they ensure indoor air quality, thermal comfort and sterility. However, several studies reveal that high indoor temperatures and low relative humidity (RH) are often perceived in patient rooms during the heating season, suggesting an important energy saving potential. Against this background, radiant ceiling panel (RCP) systems result to be one of the most appropriate solutions as they allow to achieve significant energy savings while providing the highest level of thermal and acoustic comfort, as well as of infection control. In the present study the microclimatic survey of a patient room at Maggiore Hospital in Bologna, Italy, equipped with an air conditioning system integrated with RCP, has reported occupant thermal discomfort. Experimental data were used to calibrate a building model and dynamic building energy simulations were carried out to analyse indoor air temperature, relative humidity, predicted mean vote (PMV) and predicted percentage of dissatisfied (PPD) indexes under different inlet air temperatures, to identify the best design conditions for energy efficiency and thermal comfort improvement. It was found that the highest advantages can be obtained when neutral air is supplied.

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“…Adamu et al (2012) has revealed that 25% ducts ventilation opening fraction is needed to achieve required air flow rates and convenience thermal comfort in winter. Hashiguchi et al (2008) has expressed the need for increase the humidity in winter which caused by the use of central heating systems. In fact, low relative humidity could have an effect not only on comfort, but also on health.…”

Section: Health Care Buildingsmentioning

confidence: 99%

Impact of Building Function on Thermal Comfort: A Review Paper

Alwetaishi¹

2016

American Journal of Engineering and Applied Sciences

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One of the most problems for achieving thermal comfort in buildings is disregarding the impact of different types of building use. They are differ depending on the activity style they perform inside. In residential buildings, for instance, variations in indoor temperature is more acceptable than the case in hotels or hospitals. This review is leading to seek a solution for this problem which usually found neglected. Consequently, the selection of the reviewed papers was based on building use. Main factors affecting thermal comfort will be discussed. In addition, focus on the effect of building's function on thermal comfort such as residential buildings, office buildings, heath care buildings and educational buildings. As far as environmental aspects affecting thermal comfort, air temperature was found to be the most effective one among the rest. Moreover, the effect of building function on adaptive thermal comfort has been discussed with reference to residential, office, healthcare and educational buildings. It has to be considered that there is a noticeable effect on the different types of building in terms of its impact on the users.

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Effects of setting up of humidifiers on thermal conditions and subjective responses of patients and staff in a hospital during winter

Cited by 26 publications

References 18 publications

Associations of indoor carbon dioxide concentrations, air temperature, and humidity with perceived air quality and sick building syndrome symptoms in Chinese homes

Associations of indoor carbon dioxide concentrations, air temperature, and humidity with perceived air quality and sick building syndrome symptoms in Chinese homes

Experimental Data and Simulations of Performance and Thermal Comfort in a Patient Room Equipped with Radiant Ceiling Panels

Impact of Building Function on Thermal Comfort: A Review Paper

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