scholarly journals Measurement and Operational Improvement in an Office with Thermo Active Building System

2019 ◽  
Vol 111 ◽  
pp. 02065
Author(s):  
Toshiki Namai ◽  
Jun Shinoda ◽  
Ryoya Furukawa ◽  
Shin-ichi Tanabe ◽  
Kosuke Sato ◽  
...  
Keyword(s):  
Indoor Environment ◽  
Thermal Environment ◽  
Thermal Sensation ◽  
Field Measurements ◽  
First Year ◽  
High Satisfaction ◽  
Measurement Results ◽  
Operational Improvement ◽  
Building System ◽  
Questionnaire Surveys

Thermo Active Building System (TABS) is applied in office buildings in many European countries as a promising energy-efficient solution with a comfortable thermal environment. However, TABS is rarely applied in Japanese buildings because of the risk of dew condensation during the hot and humid summer season. In this study, the indoor environment and thermal sensation in an office building equipped with TABS was investigated; the building is located in an urban area in Tokyo, Japan. Soon after occupancy, field measurements and questionnaire surveys were conducted during the summer and winter seasons for two consecutive years. The operation of TABS was improved based on first-year measurement results. As a result, the ceiling surface setpoint temperature was relaxed, maintaining high satisfaction in summer. In winter, it was confirmed that the operation of TABS was not necessary, and, as a result, satisfaction improved.

scholarly journals Indoor Thermal Environment of Various Semi-Enclosed Atrium Configurations of Institutional Building in Tropical Climate

2021 ◽  
Vol 8 (2) ◽  
pp. 35-48
Author(s):  
Wardah Fatimah Mohammad Yusoff
Keyword(s):  
Thermal Environment ◽  
Thermal Sensation ◽  
Field Measurements ◽  
Tropical Climate ◽  
Air Velocity ◽  
Local Climate ◽  
Indoor Thermal Environment ◽  
Heat Penetration ◽  
Questionnaire Surveys ◽  
Involved Field

The consideration of local climate is essential for the application of atrium in building. Different strategies and approaches in atrium configuration are required for different climates in ensuring its effectiveness.  Nevertheless, the final aim is still similar which is to provide a comfortable environment for the users. Hence, this study was executed to examine the effects of top and side configurations on the indoor thermal environment of semi-enclosed atrium in the tropical climate. The methodologies involved field measurement and questionnaire survey. The field measurements were executed at two different configurations of semi-enclosed atriums in the tropical climate of Malaysia. Meanwhile, the questionnaire surveys were executed simultaneously with the field measurements in obtaining the users’ thermal sensation and satisfaction. The findings indicated that the top configuration had more influence to the indoor thermal environment compared to the side configuration as it determined the amount of solar heat penetration into the atrium area. Meanwhile, the side configuration influenced the air velocity inside the atrium. The Faculty of Engineering and Built Environment’s atrium that has opaque top finishes was found to have the average indoor operative temperature of less than 30 °C throughout the day, though the average outdoor air temperature was more than 30 °C. It also had more hours with neutral thermal sensation felt by the users compared to the Faculty of Economics and Management’s atrium that has transparent materials for the top finishes. The study is useful in guiding the selection of appropriate strategy for an atrium in tropical climate

scholarly journals The PMV and PPD indices in the selected boiler room

2018 ◽  
Vol 44 ◽  
pp. 00021 ◽  
Author(s):  
Robert Cichowicz ◽  
Artur Stelęgowski
Keyword(s):  
Indoor Environment ◽  
Thermal Environment ◽  
Thermal Sensation ◽  
Thermal Conditions ◽  
Thermal Processes ◽  
Technological Equipment ◽  
Work Area ◽  
Boiler Room ◽  
Industrial Boiler ◽  
Made In

Thermal microclimate in a boiler room is formed by factors resulting from thermal processes that are taking place in combustion units. These factors are negatively affecting the indoor environment by worsening the air quality, and therefore it is crucial to maintain adequate air parameters in the room. It is a consequence of the fact that in the boiler room the operation of technological equipment results in an exposure of workers to adverse effects caused by thermal factors. Therefore, the evaluation of thermal conditions in the work area of people was made for the selected industrial boiler room using PMV and PPD indices (which allow to determine the thermal sensation of employees, regarding their surrounding thermal environment, based on the methodology of ISO 7730 standard). The analysis was based on own experimental measurements and numerical calculations made in the DesignBuilder program.

scholarly journals Assessment of Thermal Comfort in the Intelligent Buildings in View of Providing High Quality Indoor Environment

Energies ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1973
Author(s):  
Grzegorz Majewski ◽  
Łukasz J. Orman ◽  
Marek Telejko ◽  
Norbert Radek ◽  
Jacek Pietraszek ◽  
...  
Keyword(s):  
Thermal Comfort ◽  
Indoor Environment ◽  
Thermal Environment ◽  
Thermal Sensation ◽  
Carbon Dioxide Concentration ◽  
Well Being ◽  
Environment Quality ◽  
Intelligent Buildings ◽  
Indoor Environment Quality ◽  
Very High

The paper analyses the indoor environment in two modern intelligent buildings located in Poland. Measurements of air and globe temperatures, relative humidity and carbon dioxide concentration in 117 rooms carried out in the space of 1.5 years were presented. Thermal comfort of the occupants has been investigated using a questionnaire survey. Based on 1369 questionnaires, thermal sensation, acceptability and preference votes were analysed in view of their interdependency as well as their dependency on operative temperature, which proved to be very strong. It has been found that the respondents did not completely rate thermal comfort and indoor environment quality as very high, although the overwhelming sensations were positive. Apart from the operation of heating, ventilation and air conditioning (HVAC) systems, this might have also been the cause of individual human factors, such as body mass index, as tested in the study, or the finding that people were generally in favour of a warmer environment. Moreover, thermal environment proved to be the most important element for ensuring the well-being of the occupants.

scholarly journals Mood state and human evaluation of the thermal environment using virtual settings

2019 ◽  
Vol 30 (1) ◽  
pp. 70-86
Author(s):  
Anwar Ibrahim ◽  
Hikmat Ali ◽  
Aroub Zghoul ◽  
Suha Jaradat
Keyword(s):  
Indoor Environment ◽  
Thermal Environment ◽  
Mood State ◽  
Thermal Sensation ◽  
Design Method ◽  
Mood States ◽  
Physical Parameters ◽  
Thermal Environments ◽  
Human Evaluation ◽  
Mental Reaction

Many complaints about indoor conditions are related to unsatisfactory thermal environments. Most research on thermal comfort (TC) considered physical parameters for settings and users yet marginalized the influence of user’s psychological aspects in the process of thermal sensation. Immersive virtual reality (VR) has been used in the built environment to simulate real scenarios. This research examines the effect of mood states on human evaluation of the thermal environment in virtual settings. Forty-four university students from Jordan participated. The experiment followed the ‘Experimental Design Method’ using thermally controlled chamber and TC evaluation using psychological responses developed by Fanger. The participants completed the PANAS-X pre-mood test before watching a video that targeted eliciting predetermined mood states: anger and happiness. The participants were then immersed in two virtual environments and asked to complete ASHRAE 7-point scale of TC. General Linear model was used to analyse the data. The results revealed a relationship between TC, mood state and quality of the indoor environment. Humans’ judgment on TC is a variable mental reaction. The research presents differences between the evaluation of angry and happy people to their thermal environments. This study expands research on the indoor environment quality and develops TC evaluation strategies.

scholarly journals Indoor Thermal Environment and Occupant’s Living Pattern of Traditional Timber Houses in Tropics

Designs ◽  
2021 ◽  
Vol 5 (1) ◽  
pp. 10
Author(s):  
Rezuana Islam ◽  
Khandaker Shabbir Ahmed
Keyword(s):  
Architectural Design ◽  
Thermal Environment ◽  
Thermal Sensation ◽  
Well Being ◽  
Construction Technology ◽  
Design Strategies ◽  
Policy Makers ◽  
Indoor Thermal Environment ◽  
Local Construction ◽  
Questionnaire Surveys

Traditional timber houses in tropics have specific environmental characteristics that evolved considering material constraints, local construction technology and climate. To provide occupants with the necessary comfort, these naturally ventilated houses adopted several passive design strategies. Moreover, occupants have unique living patterns which may have contributed towards achieving indoor thermal comfort. However, scientific knowledge regarding these issues is still limited. Therefore, considering traditional timber houses of Bangladesh as sample cases, this study aims to investigate existing relationship between an indoor thermal environment and an occupant’s living pattern within these tropical houses. Physical measurement of thermal parameters and questionnaire surveys followed by personal observations were conducted. Findings show that indoor air temperature (AT °C) fluctuates readily with that outdoors without a timelag resulting in daytime overheating. The occupant’s daytime thermal sensation is mostly slightly warm to hot. Semi-open and outdoor shaded spaces become a way to cope with the daytime overheating period. Occupants frequently use indoor spaces during the night when thermal sensation ranges between neutral to slightly cool. Finally, from the findings an interpretational graph has been developed relating indoor thermal environment with occupant’s living pattern within a traditional timber house. Findings will contribute to professionals and policy-makers developing architectural design strategies that may impact the occupant’s well-being in future.

Study on the Thermal Performance of the Vernacular Dwellings in Wei-He Plain of Shaanxi Province

2012 ◽  
Vol 476-478 ◽  
pp. 1589-1595
Author(s):  
Yi Ping Zhu ◽  
Xi Liao ◽  
Shu Yun Wu ◽  
Jing Luo ◽  
Yuan Jiang ◽  
...  
Keyword(s):  
Energy Saving ◽  
Thermal Insulation ◽  
Thermal Performance ◽  
Thermal Environment ◽  
Local Area ◽  
Shaanxi Province ◽  
Indoor Thermal Environment ◽  
Questionnaire Surveys

Based on indoor thermal environment test and questionnaire surveys, the paper studies on thermal insulation capacity and indoor thermal environment of the vernacular dwellings in Wei-he Plain of Shaanxi Province, China, and analyses their heating methods and application status. Besides, the popularity of sustainable techniques in local area has been evaluated and summarized. Moreover, the paper discusses the present problems in local indoor thermal environment and energy-saving status.

scholarly journals Indoor Thermal Comfort Analysis: A Case Study of Modern and Traditional Buildings in Hot-Arid Climatic Region of Ethiopia

Urban Science ◽  
2021 ◽  
Vol 5 (3) ◽  
pp. 53
Author(s):  
Haven Hailu ◽  
Eshetu Gelan ◽  
Yared Girma
Keyword(s):  
Thermal Comfort ◽  
Significant Role ◽  
Indoor Environment ◽  
Thermal Sensation ◽  
Climatic Region ◽  
Contributing Factors ◽  
Objective Measurements ◽  
Indoor Thermal Comfort ◽  
Adaptive Comfort

Indoor thermal comfort is an essential aspect of sustainable architecture and it is critical in maintaining a safe indoor environment. Expectations, acceptability, and preferences of traditional and modern buildings are different in terms of thermal comfort. This study, therefore, attempts to evaluate the indoor thermal comforts of modern and traditional buildings and identify the contributing factors that impede or facilitate indoor thermal comfort in Semera city, Ethiopia. This study employed subjective and objective measurements. The subjective measurement is based on the ASHRAE seven-point thermal sensation scale. An adaptive comfort model was employed according to the ASHRAE standard to evaluate indoor thermal comfort. The results revealed that with regards to thermal sensational votes between −1 and +1, 88% of the respondents are satisfied with the indoor environment in traditional houses, while in modern houses this figure is 22%. Likewise, 83% of occupants in traditional houses expressed a preference for their homes to remain the same or be only slightly cooler or warmer. Traditional houses were, on average, in compliance with the 80% acceptability band of the adaptive comfort standard. The study investigated that traditional building techniques and materials, in combination with consideration of microclimate, were found to play a significant role in regulating the indoor environment.

scholarly journals APLIKASI E-KMS UNTUK PENDATAAN DAN REKAPITULASI TUMBUH KEMBANG BALITA DI POSYANDU MEKAR ARUM 18

2020 ◽  
Vol 4 (2) ◽  
pp. 216
Author(s):  
Rohmat Tulloh ◽  
Dadan Nur Ramadan ◽  
Dendi Gusnadi
Keyword(s):  
Data Collection ◽  
Technology Implementation ◽  
Growth And Development ◽  
Participation Rate ◽  
High Satisfaction ◽  
Measurement Results ◽  
Service Activity ◽  
History Of ◽  
Indicators Of Success ◽  
The Village

E-KMS Application for Data Collection and Recapitulation of Toddler Growth in Posyandu Mekar Arum 18Abstract. Mekar Arum Posyandu 18, which located in Lengkong village, has a low to moderate participation rate of mothers and toddlers, ranging from 15% to 25%. Besides, the registration of growth and development of infants is done manually or handwritten by the cadre on a Kartu Menuju Sehat (KMS). KMS loss often occurs so that parents and Posyandu officials have difficulty finding a history of growth and development of infants. The purpose of this activity is to increase the number of toddlers who come to the Posyandu. Besides that, this activity intends to make it easier for parents of toddlers to get information about Posyandu activities schedules, data on children's growth and development, health information also Posyandu programs. While for Posyandu cadres, this activity can help to collect data and recapitulate the growth of children and also make it easier to reports to the village office or Puskesmas. This activity uses the technology implementation method through the creation of the Posyandu mobile application (mPosyandu). This application is an electronic KMS (e-KMS) based on Android. Electronic-based data collection methods are used as a basis for planning and implementing activities. From the measurement results, this community service activity can meet all the indicators of success. Those indicators are including, the number of mothers of toddlers who use the application reaches 90%, the number of toddlers who come to Posyandu has increased to 90%, all toddlers in Posyandu Mekar Arum 18 recorded digitally, the level of high satisfaction society and the level of suitability of activities that reach 100%.Keywords: Posyandu, e-KMS, toddler.Abstrak. Posyandu Mekar Arum 18 yang berlokasi di desa Lengkong memiliki tingkat partisipasi ibu dan balita yang terbilang rendah hingga sedang, berkisar antara 15 sampai dengan 25 persen. Selain itu pencatatan tumbuh kembang balita dilakukan secara manual atau ditulis tangan oleh kader pada selembar Kartu Menuju Sehat (KMS).  Kehilangan KMS sering terjadi sehingga para orang tua dan petugas posyandu kesulitan mencari riwayat tumbuh kembang balita. Tujuan dari kegiatan ini adalah untuk meningkatkan jumlah balita yang datang ke posyandu. Disamping itu kegiatan ini ditujukan untuk memudahkan orang tua balita untuk mendapatkan informasi tentang jadwal kegiatan posyandu, data tumbuh kembang anak dan informasi kesehatan serta program-program posyandu. Sedangkan bagi kader posyandu, kegiatan ini dapat membantu untuk pendataan dan rekapitulasi pertumbuhan balita dan juga dapat memudahkan dalam pelaporan ke kelurahan atau puskesmas. Kegiatan ini menggunakan metode penerapan teknologi melalui pembuatan aplikasi mobile Posyandu (mPosyandu). Aplikasi ini merupakan sebuah elektronik KMS (e-KMS) berbasis android. Metode pendataan berbasis elektronik digunakan sebagai landasan perencanaan dan pelaksanaan kegiatan. Dari hasil pengukuran, kegiatan pengabdian masyarakat ini mampu memenuhi semua indikator keberhasilan diantaranya, jumlah ibu balita yang memakai aplikasi mencapai 90%, jumlah balita yang datang ke posyandu meningkat hingga 90%, semua balita di posyandu mekar arum 18 sudah terdata secara digital, tingkat kepuasan masyarakat yang tinggi dan tingkat kesesuaian kegiatan yang mencapai 100%.Kata Kunci: Posyandu, e-KMS, Balita.

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