Thermal comfort index and infrared temperatures for lambs subjected to different environmental conditions

ABSTRACT Evaluation of the comfort and animal welfare parameters enables determining the best environmental conditions for livestock creation. The present study was aimed to determine the thermal comfort index for beef cattle using interpolation techniques for the State of Mato Grosso do Sul during extreme summer and winter seasons for a period of 10 years. The analysis was performed on the climatic variables data provided by the National Institute of Meteorology, Brazil. The maximum (THImax) and minimum (THImin) temperature and humidity indices (THIs) of 28 weather stations distributed across the state were calculated, and the thematic maps of the THIs (maximum and minimum) calculated for the summer and winter seasons were prepared. The results revealed a state of emergency in the two largest animal-producing cities in the state; namely, Corumbá and Ribas do Rio Pardo, while two other cities, Chapadão do Sul and Costa Rica emerged as favorable regions for the production of beef cattle. The Spline method used in the present study, therefore, proved to be a suitable tool for analyzing a small number of weather stations distributed over a large territorial area.

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ASHRAE Likelihood of Dissatisfaction: a new right-here and right-now thermal comfort index for assessing the Likelihood of Dissatisfaction according to the ASHRAE adaptive comfort model

Energy and Buildings ◽

10.1016/j.enbuild.2021.111286 ◽

2021 ◽

pp. 111286

Author(s):

Salvatore Carlucci ◽

Silvia Erba ◽

Lorenzo Pagliano ◽

Richard de Dear

Keyword(s):

Thermal Comfort ◽

New Right ◽

Comfort Index ◽

Adaptive Comfort

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Animal thermal comfort index for the state of Paraíba, Brazil: trend, influencing factors, and mitigating measures

Theoretical and Applied Climatology ◽

10.1007/s00704-021-03849-w ◽

2021 ◽

Author(s):

Valquiria Cordeiro da Silva ◽

Robson de Sousa Nascimento ◽

José Pinheiro Lopes Neto ◽

Fernanda Fernandes de Melo Lopes ◽

Jaciara Ribeiro Miranda ◽

...

Keyword(s):

Thermal Comfort ◽

Influencing Factors ◽

The State ◽

Comfort Index

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Thermal comfort control via air conditioning system using fuzzy neural network feedback controller

Indonesian Journal of Electrical Engineering and Computer Science ◽

10.11591/ijeecs.v19.i2.pp586-592 ◽

2020 ◽

Vol 19 (2) ◽

pp. 586

Author(s):

Somaye A. Mohamadi ◽

Abdulraheem J. Ahmed

Keyword(s):

Neural Network ◽

Thermal Comfort ◽

Environmental Conditions ◽

Air Conditioning ◽

Fuzzy Controller ◽

Environmental Parameters ◽

Thermal Conditions ◽

Real Time Control ◽

Air Conditioning System ◽

Air Conditioning Systems

<span>Despite their complexity and uncertainty, air conditioning systems should provide the optimal thermal conditions in a building. These controller systems should be adaptable to changes in environmental parameters. In most air conditioning systems, today, there are On/Off controllers or PID in more advanced types, which, due to different environmental conditions, are not optimal and cannot provide the optimal environmental conditions. Controlling thermal comfort of an air conditioning system requires estimation of thermal comfort index. In this study, fuzzy controller was used to provide thermal comfort in an air conditioning system, and neural network was used to estimate thermal comfort in the feedback path of the controller. Fuzzy controller has a good response given the non-linear features of air conditioning systems. In addition, the neural network makes it possible to use thermal comfort feedback in a real-time control.</span>

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Thermal comfort index in lactating cows in an adapted free-stall facility

Revista Agrogeoambiental ◽

10.18406/2316-1817v11n420191371 ◽

2020 ◽

Vol 11 (4) ◽

Author(s):

João Marcos de Carvalho Vasconcelos ◽

Sindynara Ferreira ◽

Elisa De Souza Junqueira Rezende ◽

José Luiz de Andrade Rezende Pereira

Keyword(s):

Body Temperature ◽

Relative Humidity ◽

Thermal Comfort ◽

Experimental Period ◽

Temporal Variations ◽

Holstein Cattle ◽

Black And White ◽

Comfort Index ◽

Lactating Cows ◽

Comfort Indices

This study was conducted to investigate the thermoregulation of Holstein cattle in an adapted free-stall facility at IFSULDEMINAS, Campus Inconfidentes, by measuring thermal comfort indices. The experimental period was from the end of December 2012 to the start of January 2013, in a total of 16 days. 12 multiparous, lactating, black-and-white Holstein cows were used in a free-stall system. Rectal temperature, respiratory frequency, ambient temperature and relative humidity were recorded at 3:00 a.m., 7:00 a.m., 11:00 a.m., 3:00 p.m., 7:00 p.m. and 11:00 p.m. The results demonstrate that despite the temporal variations that occurred throughout the evaluation days, the confined animals maintained their body temperature in balance.

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Outdoor Universal Thermal Comfort Index Climatology for Alaska

Atmospheric and Climate Sciences ◽

10.4236/acs.2019.94036 ◽

2019 ◽

Vol 09 (04) ◽

pp. 558-582 ◽

Cited By ~ 1

Author(s):

Nicole Mölders

Keyword(s):

Thermal Comfort ◽

Comfort Index

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THERMAL COMFORT INVESTIGATION ON HOLY MOSQUE IN BANDUNG Case Study : Lautze 2 Mosque Bandung

Journal of Architectural Research and Education ◽

10.17509/jare.v2i1.24105 ◽

2020 ◽

Vol 2 (1) ◽

pp. 82

Author(s):

Agung Prabowo

Keyword(s):

Thermal Comfort ◽

Quantitative Research ◽

Thermal Environment ◽

Tropical Climate ◽

Air Humidity ◽

Air Velocity ◽

Related Factors ◽

Climate Conditions ◽

Comfort Index ◽

Main Factors

Abstract -Thermal comfort is a state of mind that expresses satisfaction with the thermal environment. There are two main categories in the effort to obtain a comfort index; empirical and analytical. Empirical is based on social surveys, while analysis is based on the physics principle of heat flow.Bandung city is one of the historical cities in Indonesia which has many historical heritage buidings. One of them which is commonly known as colonial buildings in Bandung is Lautze 2 Mosque, located at Tamblong Street in the city center of Bandung. This research was conducted to analyze the thermal comfort in the Lautze 2 Mosque Bandung. The analytical method used in this study is a quantitative research method by measuring the main factors namely air temperature, air humidity and air velocity. The main factors become obstacles to get thermal comfort data at the Lautze 2 Mosque Bandung is the location of buildings located in areas with tropical climate conditions with high air temperatures, high air humidity, and low air velocitys.The research conclude that thermal comfort in the Lautze 2 Mosque Bandung building can be categorized as uncomfortable, it can be seen from the measurement results of related factors, namely the temperature and humidity that exceeds the comfort limit and the low air velocity in the building becomes an obstacle to obtain thermal comfort. Keywords: colonial buildings, mosque, thermal comfort, tropical climate.

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Study of Universal Thermal Comfort Index in Hosing Estate Public Space in Bangkok, Thailand

Journal of Design and Built Environment ◽

10.22452/jdbe.vol21no2.2 ◽

2021 ◽

Vol 21 (2) ◽

pp. 10-18

Author(s):

Pitiwat Wattanachai ◽

Chawanat Sundaranaga ◽

Thidarat Kridakorn Na Ayutthaya ◽

Non Phichetkunbodee ◽

Damrongsak Rinchumphu

Keyword(s):

Thermal Comfort ◽

Public Space ◽

Public Spaces ◽

Thermal Reduction ◽

External Temperature ◽

Comfort Index ◽

Large Trees ◽

Public Areas ◽

Outdoor Comfort ◽

Air Circulation

A lower external temperature increases comfort and reduces the chance of heat stress; it can be impacted by the density of the urban area, and this is an important issue for the residents in housing estate developments. Therefore, to sustainably reduce this issue, the external temperature is important to manage for urban public spaces’ development. This article reports the results of studies on increasing thermal comfort in public areas by adding different types of shading into computer programs, Rhinoceros and Grasshopper, to calculate the Universal Thermal Comfort Index (UTCI). Increasing the outdoor comfort can be done by adding shaded areas via large trees that can result in thermal reduction and humidity increase, but they do not obstruct air circulation. The result can be used as a guideline for the design of public spaces in housing estates to meet the outdoor comfort efficiently and support the users’ expectations.

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