scholarly journals Conforto térmico em trabalhadores de aviários

2021 ◽  
Vol 4 (1) ◽  
pp. 47-59
Author(s):  
Ana Ferreira ◽  
Hélder Simões ◽  
João Paulo Figueiredo ◽  
Susana Paixão ◽  
Lúcia Simões Costa ◽  
...  
Keyword(s):  
Predicted Mean Vote

Enquadramento: podendo existir vulnerabilidade dos trabalhadores avícolas face às temperaturas do interior dos aviários em comparação com as do exterior é importante analisar a sua exposição ocupacional em termos de conforto térmico. Objetivos: avaliar o conforto térmico em trabalhadores do setor avícola no ambiente interior e exterior dos aviários e analisar a sua possível relação com a fase de desenvolvimento do frango. Metodologia: o estudo efetuado foi observacional, transversal, com uma amostra por conveniência de 6 trabalhadores de 8 aviários. A recolha de dados foi realizada através de um questionário dirigido a todos os trabalhadores seguida da medição dos valores de Predicted Mean Vote (PMV) e Predicted Percentage of Dissatisfied (PPD). Resultados: em aviários de frangos com 8 dias de idade verificou-se uma total concordância entre os valores de PMV e PPD, nos de 35 dias uma concordância significativa e nos de 85 dias uma considerável concordância. Conclusão: existe desconforto térmico nos trabalhadores avaliados, especialmente nos que trabalham em aviários para frangos com 8 e 35 dias de idade. O desconforto térmico foi pior nos aviários de frangos com 8 dias, revelando assim a relação entre o índice de conforto térmico e a fase de desenvolvimento do frango.

Gradient auto-tuned Takagi–Sugeno Fuzzy Forward control of a HVAC system using predicted mean vote index

2012 ◽  
Vol 49 ◽  
pp. 254-267 ◽  
Author(s):  
Raad Z. Homod ◽  
Khairul Salleh Mohamed Sahari ◽  
Haider A.F. Almurib ◽  
Farrukh Hafiz Nagi
Keyword(s):  
Hvac System ◽  
Predicted Mean Vote ◽  
Takagi Sugeno

scholarly journals Thermal Comfort Study Based on PMV-PPD in the Building of a Screening Center for COVID-19

2021 ◽  
Author(s):  
Danial Mohammadi ◽  
Simin Nasrabadi
Keyword(s):  
Thermal Stress ◽  
Energy Consumption ◽  
Thermal Comfort ◽  
Air Conditioning ◽  
Thermal Condition ◽  
R Software ◽  
Air Conditioning System ◽  
Thermal Index ◽  
Predicted Mean Vote ◽  
Hot Climate

Background: One way to achieve a standard heating, ventilating, and air conditioning system with maximum satisfaction is to use a thermal index to identify and determine the thermal comfort of people. In this study we intend to evaluate thermal comfort based on PMV-PPD (Predicted Mean Vote/Predicted Percentage Dissatisfied) model in workers of screening center for COVID-19. Methods: The study period was from March 1 to October 31, 2020. In this study, we used the ISO 7730 model to determinate PMV-PPD index. PMV index was used to determine thermal comfort at different scales in Birjand city with arid and hot climate. All data were analyzed using R software (version 3.3.0) and IBM SPSS statistics softwares. Results: The maximum and minimum recorded physical PMV values in the study period were observed in June as (2.09 ± 0.03) and March as (-1.27 ± 0.14), respectively. The amplitude of the thermal sense in the study period was varied between slightly cool (-1.5) and warm (+2.5). The PPD in spring was 40% which indicated slightly warm to hot condition. Conclusions: The October was the only month during the study in which thermal stress was in comfort or neutral thermal condition.  Our results suggest that thermal comfort has dimensions and indices which are helpful in managing energy consumption.

scholarly journals Respon Pengunjung dan Pedagang Terhadap Kondisi Lingkungan Termal (Suhu Udara) Di Pasar Wolowona Kota Ende

TEKNOSIAR ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 1-6
Author(s):  
Petrus Jhon Alfred Depa Dede
Keyword(s):  
Predicted Mean Vote

Pasar Wolowona merupakan salah satu pasar yang ada di Kota Ende yang menyediakan kebutuhan pokok masyarakat dengan aneka jenis jualan. Aktifitas jual beli di pasar ini sangat itens. Kenyamanan lingkungan (suhu udara) di pasar di saat terjadinya aktifitas jual beli merupakan salah satu faktor penting yang dapat mempengaruhi hasil penjualan dan daya tarik pembeli. Penelitian ini bertujuan untuk mencari tahu tentang bagaimana respon dari para pengunjung dan penjual terhadap kondisi suhu udara di pasar Wolowona sebagai bagian dari kenyamanan termal dalam desain arsitektur. Penelitian dilakukan dengan metode kualitatif diskriptif. Dalam penelitian ini pengumpulan data dilakukan dengan survey, observasi dan studi literatur. Jumlah responden yang di wawancara adalah 30 orang, terdiri dari 13 orang pedagang, 13 orang pengunjung dan 4 orang petugas, yang berusia 15 - 60 tahun. Waktu wawancara dilakukan pada pagi, siang dan sore hari yaitu pada pukul 09:00, pukul 13:00 dan pukul 17:00. Kuesioner respon diambil menggunakan indeks PMV (Predicted Mean Vote) dengan 7 poin skala sensasi termal, yaitu -3 (Dingin), -2 (Sejuk), -1 (Agak sejuk), 0 (Netral), 1 (Agak hangat), 2 (Hangat), dan 3 (Panas). Hasil penelitian menunjukkan, bahwa para pengunjung dan penjual merasa tidak pus dengan kondisi kenyamanan (suhu udara) yang ada. Data dari 30 orang responden yang di wawancara hanya 5 orang responden yang merasakan nyaman/ netral dan 12 orang merasakan hangat serta 13 orang lainya merasakan panas. Oleh karena itu diperlukan tindakan dengan menata kembali lingkungan dan desain pasar.

Extending Predicted Mean Vote using adaptive approach

2020 ◽  
Vol 171 ◽  
pp. 106665 ◽  
Author(s):  
Sheng Zhang ◽  
Zhang Lin
Keyword(s):  
Adaptive Approach ◽  
Predicted Mean Vote

scholarly journals Thermal Comfort Control Based on a Simplified Predicted Mean Vote index

2014 ◽  
Vol 61 ◽  
pp. 970-974 ◽  
Author(s):  
Hyesim Han ◽  
Jinsook Lee ◽  
Jonghun Kim ◽  
Cheolyong Jang ◽  
Hakgeun Jeong
Keyword(s):  
Thermal Comfort ◽  
Predicted Mean Vote

Optimization of Predicted Mean Vote index within Model Predictive Control framework: Computationally tractable solution

2012 ◽  
Vol 52 ◽  
pp. 39-49 ◽  
Author(s):  
Jiří Cigler ◽  
Samuel Prívara ◽  
Zdeněk Váňa ◽  
Eva Žáčeková ◽  
Lukáš Ferkl
Keyword(s):  
Model Predictive Control ◽  
Predictive Control ◽  
Predicted Mean Vote ◽  
Control Framework

scholarly journals PENGARUH BUKAAN SAMPING (CLERESTORY) TERHADAP KUALITAS KENYAMANAN TERMAL PADA FOOD CARNIVAL, MALL AEON BSD

Vitruvian ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 47
Author(s):  
Tathia Edra Swasti
Keyword(s):  
Wind Speed ◽  
Thermal Comfort ◽  
Air Temperature ◽  
Effective Temperature ◽  
Air Humidity ◽  
Air Velocity ◽  
Predicted Mean Vote ◽  
Air Speed ◽  
The Right

ABSTRAK Mall saat ini marak menggunakan clerestory sebagai salah satu upaya untuk penerangan alami pada siang hari. Namun, cahaya matahari pada sore hari (barat) akan menghasilkan cahaya matahari yang lebih panas dan silau dibandingkan cahaya matahari pada pagi hari (timur). Oleh karena itu, dengan pemakaian clerestory yang cukup besar pada bangunan, masalah panas tentu tak dapat dihindari. Begitu pula dengan glare yang berasal dari pantulan sinar matahari. Salah satu Mall yang menggunakan clerestory adalah Mall AEON BSD. Pengukuran suhu udara, temperatur efektif, kelembaban udara, kecepatan angin, PMV (Predicted Mean Vote) dan PPD (Predicted Percentage of Dissatisfied) dilaksanakan pada 4 waktu dengan 5 lokasi titik ukur yang memiliki kondisi berbeda untuk membuktikan bahwa clerestory dapat mempengaruhi kenyamanan termal. Disimpulkan bahwa titik 2 yaitu titik yang berdekatan dengan clerestory sisi kanan (ukurannya lebih kecil daripada clerestory sisi kiri) memiliki temperatur efektif dan kelembaban udara yang lebih rendah dari titik lain, dan kecepatan udara (dipengaruhi oleh hembusan AC) lebih tinggi dari titik lain. Responden merasa nyaman saat berada di titik tersebut.Titik paling nyaman menurut responden adalah titik 2 dengan TE rata-rata berkisar 27,4˚C, kelembaban udara rata-rata berkisar 52,2%, kecepatan udara rata-rata berkisar 0,15 m/s, PMV berkisar 0,5 dan PPD berkisar 12,7%. Dengan begitu semakin kecil ukuran skylight terbukti mempengaruhi kenyamanan termal dan membuat kenyamanan termal dapat tercapai. Kata Kunci: Mall, Clerestory, PMV, PPD, Kenyamanan Termal ABSTRACT Nowadays mall is decorated with clerestory as an effort to lighten naturally during the day. However, sunlight in the afternoon (west) will produce more sunlight and glare than sunlight in the morning (east). Therefore, with the use of a fairly large clerestory in buildings, the problem of heat certainly can not be avoided. Similarly, glare that comes from the reflection of sunlight. One of the malls that use clerestory is BSD AEON Mall. Measurement of air temperature, effective temperature, air humidity, wind speed, PMV (Predicted Mean Vote) and PPD (Predicted Percentage of Dissatisfied) carried out at 4 times within 5 measuring spots that have different conditions, proving that clerestory can affect thermal comfort. It was concluded that point 2, which is the point adjacent to the right side clerestory (smaller in size than the left side clerestory) has an effective temperature and lower air humidity than other points, and air velocity (affected by blowing AC) is higher than other points. Respondents felt comfortable when they were at that point. The most comfortable point according to respondents was point 2 with TE averaging around 27.4˚C, air humidity averaged 52.2%, the average air speed ranged from 0.15 m / s, PMV ranges from 0.5 and PPD ranges from 12.7%. Thus, the smaller size of the clerestory is affecting thermal comfort and thermal comfort can be achieved. Keywords: Mall, Clerestory, PMV, PPD, Thermal Comfort

scholarly journals Experimental Investigation of Adaptive Thermal Comfort in French Healthcare Buildings

Buildings ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 551
Author(s):  
Zoubayre El Akili ◽  
Youcef Bouzidi ◽  
Abdelatif Merabtine ◽  
Guillaume Polidori ◽  
Amal Chkeir
Keyword(s):  
Thermal Comfort ◽  
Thermal Environment ◽  
Winter Season ◽  
Environmental Parameters ◽  
Physical Parameters ◽  
Predicted Mean Vote ◽  
Adaptive Thermal Comfort ◽  
Important Research Topic ◽  
Radiant Temperature ◽  
The Relationship

The thermal comfort requirements of disabled people in healthcare buildings are an important research topic that concerns a specific population with medical conditions impacted by the indoor environment. This paper experimentally investigated adaptive thermal comfort in buildings belonging to the Association of Parents of Disabled Children, located in the city of Troyes, France, during the winter season. Thermal comfort was evaluated using subjective measurements and objective physical parameters. The thermal sensations of respondents were determined by questionnaires adapted to their disability. Indoor environmental parameters such as relative humidity, mean radiant temperature, air temperature, and air velocity were measured using a thermal microclimate station during winter in February and March 2020. The main results indicated a strong correlation between operative temperature, predicted mean vote, and adaptive predicted mean vote, with the adaptive temperature estimated at around 21.65 °C. These findings highlighted the need to propose an adaptive thermal comfort strategy. Thus, a new adaptive model of the predicted mean vote was proposed and discussed, with a focus on the relationship between patient sensations and the thermal environment.

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