Indoor and Built Environment最新文献_第10页

Evaluation of heating performances of different ventilation methods in an office 某办公室不同通风方式采暖性能评价

3区工程技术

Indoor and Built Environment Pub Date : 2023-09-11 DOI: 10.1177/1420326x231200561

Teng Li, Emmanuel A. Essah, Yuxin Wu, Chunhui Liao, Yong Cheng

{"title":"Evaluation of heating performances of different ventilation methods in an office","authors":"Teng Li, Emmanuel A. Essah, Yuxin Wu, Chunhui Liao, Yong Cheng","doi":"10.1177/1420326x231200561","DOIUrl":"https://doi.org/10.1177/1420326x231200561","url":null,"abstract":"In this study, 12 cases were investigated in an office-layout room using experiments and computational fluid dynamics (CFD) simulations. The heating performances of four ventilation methods (i.e. mixing ventilation (MV), stratum ventilation (SV), deflection ventilation (DeV) and impinging jet ventilation (IJV)) were comprehensively compared by various evaluation indexes (i.e. predicted mean vote (PMV), draught rate (DR), vertical air temperature difference (△T), air diffusion performance index (ADPI), energy utilization coefficient (EUC), air change efficiency (ACE) and contaminant removal efficiency (CRE)). Better thermal comfort was found in rooms heated by SV and DeV. The PMV, DR and △T under SV and DeV complied with Category B of ISO 7730:2005, and the ADPI was in full compliance with the stipulation of ANSI/ASHRAE 113-2022. For the energy-saving characteristic, the targeted-occupied-zone ventilation methods (i.e. SV, DeV and IJV) can effectively deliver warm air to the occupied zone, with the EUC values higher than unity and thus providing a good potential for energy saving. SV and IJV showed slightly higher ACEs in the breathing zone. The contaminant removal effectiveness of SV, DeV and IJV was comparable. Under the combined influence of occupant thermal plumes and locations of exhausts, MV showed a high CRE. However, the CRE under MV decreased significantly when the exhausts were not above occupants. In the case of supply air parameters in this study, the entropy-weight method indicated that DeV and SV had a better overall performance for winter heating, followed by IJV and then MV.","PeriodicalId":13578,"journal":{"name":"Indoor and Built Environment","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135980494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Healthy and resilient HVAC design for public buildings in post COVID-19 pandemic era 后COVID-19大流行时代公共建筑的健康和弹性HVAC设计

3区工程技术

Indoor and Built Environment Pub Date : 2023-09-08 DOI: 10.1177/1420326x231201440

Na Li, Chunwen Xu, Chuck Wah Francis Yu

引用次数: 0

A thermal sensation model for naturally ventilated indoor environments based on deep learning algorithms 基于深度学习算法的自然通风室内环境热感觉模型

IF 3.6 3区工程技术

Indoor and Built Environment Pub Date : 2023-09-05 DOI: 10.1177/1420326x231200560

Lei Lei, Suola Shao

{"title":"A thermal sensation model for naturally ventilated indoor environments based on deep learning algorithms","authors":"Lei Lei, Suola Shao","doi":"10.1177/1420326x231200560","DOIUrl":"https://doi.org/10.1177/1420326x231200560","url":null,"abstract":"In recent years, with the emphasis on sustainability and energy efficiency, natural ventilation has attracted increasing interest from building designers. Natural ventilation is dependent on the outdoor environments which could change rapidly, and the traditional thermal sensation models such as the predicted mean vote (PMV) are not applicable, correspondingly. The deep belief neural network can reveal nonlinear patterns in processing big data, and it can be used to predict target data with high flexibility and accuracy. This study developed a deep belief neural network model for indoor thermal sensation prediction in naturally ventilated environments with outdoor environment parameters and human factors: outdoor air temperature, average radiant temperature, outdoor air relative humidity, outdoor wind speed, clothing thermal resistance, activity level, gender, age and weight collected in 10 semi-open classrooms and 5 laboratories in April and November when natural ventilation was used. The research compared the performance of deep belief neural networks with three neural networks: BP, Elman and fuzzy neural networks. Results showed that the deep belief neural network can enhance the performance of thermal sensation prediction of natural ventilated indoor environments. The research provides a more flexible and effective solution for thermal comfort prediction of natural ventilated indoor environments.","PeriodicalId":13578,"journal":{"name":"Indoor and Built Environment","volume":" ","pages":""},"PeriodicalIF":3.6,"publicationDate":"2023-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45309074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Are the local sky temperature models and the global thermal standard model EN ISO 6946(2017) numerically compatible? 当地气温模型和全球热标准模型EN ISO 6946（2017）在数值上是否兼容？

IF 3.6 3区工程技术

Indoor and Built Environment Pub Date : 2023-09-01 DOI: 10.1177/1420326x231198729

Tomáš Ficker

{"title":"Are the local sky temperature models and the global thermal standard model EN ISO 6946(2017) numerically compatible?","authors":"Tomáš Ficker","doi":"10.1177/1420326x231198729","DOIUrl":"https://doi.org/10.1177/1420326x231198729","url":null,"abstract":"Local sky temperature models are often used by researchers to improve the estimation of building heat losses. Besides the local sky temperature models, there is a global temperature model implemented in EN ISO 6946(2017) that may also produce reasonable results if it is conveniently applied. To assess the competitiveness of global and local models, it is desirable to perform a direct numerical comparison of their results. Such a comparison has not been published so far. This study aims to analyze the computational differences between three models of sky temperature, namely, the Swinbank model, the universal model and the standard model implemented in EN ISO 6946(2017). The study verifies the robustness of the global thermal standard model to account for the acting of the cold sky on building envelopes compared to local sky models specially designed for this purpose. The quasi-nocturnal conditions are supposed to reveal the main features of the long-wave infrared interactions between the building facade and the sky. The study has proved the capability of the global standard model to successively compete with the local sky temperature models at least within the conditions of the quasi-nocturnal environment.","PeriodicalId":13578,"journal":{"name":"Indoor and Built Environment","volume":" ","pages":""},"PeriodicalIF":3.6,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49596148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Childhood respiratory diseases related to indoor and outdoor extreme thermal environment (air temperature) in Shanghai, China 上海市儿童呼吸道疾病与室内外极端热环境（气温）的关系

IF 3.6 3区工程技术

Indoor and Built Environment Pub Date : 2023-08-28 DOI: 10.1177/1420326x231198137

Shijie Hong, Yajing Luo, Yongsong Zhu, Chen Huang, Yilin Li, Chanjuan Sun

{"title":"Childhood respiratory diseases related to indoor and outdoor extreme thermal environment (air temperature) in Shanghai, China","authors":"Shijie Hong, Yajing Luo, Yongsong Zhu, Chen Huang, Yilin Li, Chanjuan Sun","doi":"10.1177/1420326x231198137","DOIUrl":"https://doi.org/10.1177/1420326x231198137","url":null,"abstract":"Ambient air temperature could be the most significant factor impacting childhood respiratory health. This paper aims to analyze the relationship between air temperature and childhood respiratory diseases (RDs). Field measurements and meteorological parameters recorded from the weather website were conducted. Health outcomes regarding respiratory diseases amongst preschool children were reported. Multiple logistic regression analyses were conducted. Results from logistic regression analyses illustrate that extreme air temperature was significantly associated with a high prevalence of RDs amongst children. Indoor high temperature (>28°C) was positively correlated with the long duration of a common cold (≥2 weeks), and outdoor high temperature (>35°C) was positively related to the high prevalence of pneumonia. Indoor and outdoor low temperature (<18°C and <4°C, respectively) was a risk factor for rhinitis amongst children. The largest indoor air temperature difference (IATD) (the 4th quartile, >4°C) and outdoor air temperature difference (OATD) (the 4th quartile, >8°C) were positively related to the high prevalence of pneumonia and diagnosed asthma amongst children. Large differences between indoor and outdoor air temperatures and large indoor air temperature variations should be avoided to reduce the adverse effects on respiratory health, especially in extreme climates.","PeriodicalId":13578,"journal":{"name":"Indoor and Built Environment","volume":" ","pages":""},"PeriodicalIF":3.6,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43703508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Removal of indoor aerosol particles generated in a medically relevant space using a portable airborne particle filtration device 使用便携式空气悬浮颗粒过滤装置去除在医学相关空间产生的室内气溶胶颗粒

IF 3.6 3区工程技术

Indoor and Built Environment Pub Date : 2023-08-27 DOI: 10.1177/1420326x231197187

Gregory T. Carroll, D. Kirschman

{"title":"Removal of indoor aerosol particles generated in a medically relevant space using a portable airborne particle filtration device","authors":"Gregory T. Carroll, D. Kirschman","doi":"10.1177/1420326x231197187","DOIUrl":"https://doi.org/10.1177/1420326x231197187","url":null,"abstract":"Aerosol generating procedures expose operating room personnel to pathogens. Applying localized negative pressure within the proximity of a patient’s airway is expected to reduce the amount of bioaerosols dispersed within the vicinity of a healthcare worker applying an aerosol generating procedure. Nebulized saline was used as a proxy for bioaerosols and was produced with an aerosol generator placed near the centre of a simulated operating room. A particle counter was placed nearby to detect aerosols and determine their size distribution. A portable filtration unit was placed at fixed distances from the site of aerosol emittance to reduce the concentration of aerosols. In the presence of vacuum at distances of 10, 20, 30 and 40 cm from the site of aerosol emittance, the reduction in the average concentrations of 0.5, 0.7, 1.0 and 3.0 μm particles relative to the control ranged from 87 to 99% depending on the distance and particle size. The efficiency of particle capture was dependent on the distance of the vacuum inlet to the aerosol outlet. At all distances tested, significant aerosol reduction was observed ( p < 0.05), indicating that the portable filtration unit has the potential to increase safety without contacting the patient.","PeriodicalId":13578,"journal":{"name":"Indoor and Built Environment","volume":" ","pages":""},"PeriodicalIF":3.6,"publicationDate":"2023-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48048087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The comparison between architecture students’ peer learning in informal situations within physical and virtual environments during the COVID-19 pandemic 2019冠状病毒病大流行期间，建筑学生在物理和虚拟环境中非正式情境下的同伴学习比较

IF 3.6 3区工程技术

Indoor and Built Environment Pub Date : 2023-08-22 DOI: 10.1177/1420326x231193576

Jierui Wang

{"title":"The comparison between architecture students’ peer learning in informal situations within physical and virtual environments during the COVID-19 pandemic","authors":"Jierui Wang","doi":"10.1177/1420326x231193576","DOIUrl":"https://doi.org/10.1177/1420326x231193576","url":null,"abstract":"This paper aims to evaluate British architecture students’ peer learning experiences in informal situations, that is, outside formal timetables. Due to the COVID-19 pandemic, the study made a comparison between those students’ learning experiences within physical and virtual environments, to find out if there are changes, difficulties and novelties when those students were introduced to unfamiliar learning contexts. Using the theoretical lens of the community of practice, the author conducted interviews and questionnaires to collect students’ learning experiences and stories when they were engaged in those two environments, respectively. It was found that the physical design studio environment and mutual engagements within it are essential to those students’ individual learning. Therefore, even if those students learned within the virtual environment, they still tried their best to simulate a design studio atmosphere to learn as the form of a community. Another obvious issue is that students normally lack peer-to-peer support, such as architectural knowledge, IT skills and mental health, when they are engaged in virtual environments. Comparatively, those supports are easily obtained via peer learning within physical environments, especially design studios. Based on the finding, future work should determine what architectural knowledge, skills, values and attitudes students developed from the community of practice.","PeriodicalId":13578,"journal":{"name":"Indoor and Built Environment","volume":" ","pages":""},"PeriodicalIF":3.6,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47033119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The association of voice problems with exposure to indoor air contaminants in health care centres – the effect of remediation on symptom prevalence: A follow-up study 声音问题与卫生保健中心暴露于室内空气污染物的关系——补救措施对症状流行率的影响：一项后续研究

IF 3.6 3区工程技术

Indoor and Built Environment Pub Date : 2023-08-22 DOI: 10.1177/1420326x231197184

L. Vilén, J. Atosuo, T. Putus

{"title":"The association of voice problems with exposure to indoor air contaminants in health care centres – the effect of remediation on symptom prevalence: A follow-up study","authors":"L. Vilén, J. Atosuo, T. Putus","doi":"10.1177/1420326x231197184","DOIUrl":"https://doi.org/10.1177/1420326x231197184","url":null,"abstract":"Voice problems are common in occupations where there is noise, dust, odours or fumes and microbial contamination. The purpose of this study is to find out the prevalence of hoarseness, its changes over the follow-up and the effect of the remediation on the prevalence. A total of 13 health care buildings were followed, 10 with indoor air problems and 3 as reference buildings. Three buildings were thoroughly remediated, and their effects were analyzed. A health questionnaire was used, before and after the remediation. Blood samples and skin prick tests were performed on all volunteers. Based on findings, 17.0% of the respondents reported hoarseness at least every week. The skin test findings for common environmental allergens, moisture damage microbes and mites were approximately similar in the exposed and reference groups, respectively. Hoarseness had a strong correlation with indoor air problems. Before the remediation, hoarseness and voice problems were more prevalent in the problem buildings. After the remediation, hoarseness was reduced by 50%. In conclusion, this study shows a connection between indoor air exposure and technical damage in buildings. The remediation significantly reduced the prevalence of hoarseness. Mould allergy is rare and does not explain the voice problems.","PeriodicalId":13578,"journal":{"name":"Indoor and Built Environment","volume":" ","pages":""},"PeriodicalIF":3.6,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43620741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of indoor air quality in coal-heating rural residential buildings in Northern China based on longtime monitoring 基于长期监测的北方燃煤农村居民楼室内空气质量调查

IF 3.6 3区工程技术

Indoor and Built Environment Pub Date : 2023-08-21 DOI: 10.1177/1420326x231196753

Shengming Dong, Yao Luo, Xiaowei Hu, Weijia Zhu

{"title":"Investigation of indoor air quality in coal-heating rural residential buildings in Northern China based on longtime monitoring","authors":"Shengming Dong, Yao Luo, Xiaowei Hu, Weijia Zhu","doi":"10.1177/1420326x231196753","DOIUrl":"https://doi.org/10.1177/1420326x231196753","url":null,"abstract":"Indoor air quality (IAQ) is closely related to resident health and has been drawing extensive consideration from academics as well as government regulators. However, few studies have quantitatively investigated IAQ in rural buildings during the heating period, in which the resident time indoors is relatively longer. This study has monitored and quantitatively analyzed the indoor air parameters (temperature, CO2, formaldehyde and PM2.5) of 20 rural houses in Northern China during the heating season (15 days out of 120). After quantitatively analyzing the IAQ parameters, the Pearson correlation model was also adopted to evaluate the relationships between them. Results showed that only 4 households could keep the indoor temperature above 18°C for more than 50% of the heating period. Additionally, there were 7, 2 and 18 households, of which the over-standard time of CO2, formaldehyde and PM2.5 took up more than 40%. The concentration of indoor PM2.5 was higher than outdoors most of the time. Therefore, indoor PM2.5 was mainly caused by indoor activities rather than transported from outside. Correlation analysis showed that CO2 was positively correlated with formaldehyde and PM2.5 in 16 and 12 households.","PeriodicalId":13578,"journal":{"name":"Indoor and Built Environment","volume":" ","pages":""},"PeriodicalIF":3.6,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47530285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The benefit of Daylight-Simulcasted Dynamic Lighting: An experiment isolating simultaneousness from dynamicity 日光模拟动态照明的好处:一项将同时性与动态性分离的实验

IF 3.6 3区工程技术

Indoor and Built Environment Pub Date : 2023-08-17 DOI: 10.1177/1420326x231196218

Hang Su, Yuqing Sun, Gang Yu, Biao Yang

{"title":"The benefit of Daylight-Simulcasted Dynamic Lighting: An experiment isolating simultaneousness from dynamicity","authors":"Hang Su, Yuqing Sun, Gang Yu, Biao Yang","doi":"10.1177/1420326x231196218","DOIUrl":"https://doi.org/10.1177/1420326x231196218","url":null,"abstract":"Most people today stay in a constant artificial lighting environment for a long time. Lack of sufficient daylight exposure may lead to circadian, sleep or mental problem. Dynamic lighting is an effective countermeasure in consideration of its dynamicity. However, besides its changeability, whether the daylight simultaneousness of dynamic lighting has a beneficial effect is unclear. A lab-based study was carried out to explore the effect of Daylight-Simulcasted Dynamic Lighting (DSDL), which simulates the simultaneous information of daylight conveyed by its variation. A reversed pattern of DSDL (Re-DSDL) was also introduced as one of the test conditions for comparison. The within-subject experiment was performed by 24 participants in four conditions: two dynamic lighting patterns (DSDL and Re-DSDL) in two periods (dawn and dusk). The dependent variables were psychological states, physiological indicators and cognitive performance. The results showed that DSDL brought greater benefit to the psychological state than Re-DSDL in general. During dawn, participants experienced less anger and depression in DSDL than in Re-DSDL; during dusk, participants experienced less anger and vigour in DSDL than in Re-DSDL. DSDL also had a significant effect on some of the physical indicators compared with Re-DSDL, but no effect on cognitive performance.","PeriodicalId":13578,"journal":{"name":"Indoor and Built Environment","volume":" ","pages":""},"PeriodicalIF":3.6,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47595009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0