Characterization of the thermal environment of the metal industry workers (with foundry)

2016 ◽  
pp. 405-408
Keyword(s):  
Thermal Environment ◽  
Metal Industry

scholarly journals Thermal environment characterization of laying hen-housing systems

2022 ◽  
Vol 10 (1) ◽  
pp. 1-9
Author(s):  
Nágela Maria Henrique Mascarenhas ◽  
Dermeval Araújo Furtado ◽  
Bonifácio Benício de Souza ◽  
Airton Gonçalves de Oliveira ◽  
Antonio Nelson Lima da Costa ◽  
...  
Keyword(s):  
Thermal Environment ◽  
Laying Hen ◽  
Housing Systems

Testing of the Mars Exploration Rovers to Survive the Extreme Thermal Environments

2007 ◽  
Vol 4 (4) ◽  
pp. 145-154
Author(s):  
Kin F. Man ◽  
Alan R. Hoffman
Keyword(s):  
Thermal Environment ◽  
Extreme Temperature ◽  
System Level ◽  
Thermal Testing ◽  
Mars Exploration ◽  
Thermal Environments ◽  
Diurnal Cycles ◽  
Operational Temperature ◽  
Science Laboratories

NASA's Mars Exploration Rover (MER) project involved delivering two mobile science laboratories (rovers) on the surface of Mars to remotely conduct geologic investigations, including characterization of a diversity of rocks and soils. The rovers were launched separately in 2003 and have been in operation on the surface of Mars since January 2004. The rovers underwent a comprehensive pre-launch environmental assurance program that included assembly/subsystem and system-level testing in the areas of dynamics, thermal, and electromagnetic (EMC), as well as venting/pressure, dust, radiation, and solid-particle (meteoroid, orbital debris) analyses. Due to the Martian diurnal cycles of extreme temperature swings, the susceptible hardware that were mounted outside of the thermal controlled zones also underwent thermal cycling qualification of their packaging designs and manufacturing processes. This paper summarizes the environmental assurance program for the MER project, with emphasis on the pre-launch thermal testing program for ensuring that the rover hardware would operate and survive the Mars surface temperature extremes. These test temperatures are compared with some of the Mars surface operational temperature measurements. Selected anomalies resulting from operating the rover hardware in the Mars extreme thermal environment are also presented.

Evaluation of satellite-derived products for the characterization of the urban thermal environment

2012 ◽  
Vol 6 (1) ◽  
pp. 061704 ◽  
Author(s):  
Iphigenia Keramitsoglou ◽  
Ioannis A. Daglis ◽  
Vassilis Amiridis ◽  
Nektarios Chrysoulakis ◽  
Giulio Ceriola ◽  
...  
Keyword(s):  
Thermal Environment ◽  
Urban Thermal Environment

Characterization of the Thermal Environment and Poultry Performance in Different half-acclimatized Facility Systems under Brazilian Winter Conditions

2007 ◽  
Author(s):  
Irene M.S MENEGALI ◽  
Ilda de Fátima Ferreira TINÔCO ◽  
Fernando da Costa; BAÊTA ◽  
Lívio Guilherme Marcelino DUARTE ◽  
Keles Regina Antony; INOUE ◽  
...  
Keyword(s):  
Thermal Environment ◽  
Winter Conditions

PID temperature controller in pig nursery: spatial characterization of thermal environment

2017 ◽  
Vol 62 (5) ◽  
pp. 773-781 ◽  
Author(s):  
Juliana de Souza Granja Barros ◽  
Luiz Antonio Rossi ◽  
Zigomar Menezes de Souza
Keyword(s):  
Thermal Environment ◽  
Temperature Controller ◽  
Spatial Characterization

Thermal Characterization of Bi-Material Microcantilevers: Thermal Conductance and Microscale Convection

2009 ◽  
Author(s):  
Arvind Narayanaswamy ◽  
Ning Gu
Keyword(s):  
Heat Transfer ◽  
Thermal Environment ◽  
Coefficient Of Thermal Expansion ◽  
Ambient Pressure ◽  
Thermal Conductance ◽  
Thermal Characterization ◽  
Temperature Changes ◽  
Atomic Force ◽  
The Heat Transfer Coefficient

Bi–material atomic force microscope cantilevers have been used extensively over the last 15 years as physical, chemical, and biological sensors. As a thermal sensor, the static deflection of bi–material cantilevers due to the mismatch of the coefficient of thermal expansion between the two materials has been used to measure temperature changes as small as 10−5 K, heat transfer rate as small as 40 pW, and energy changes as small as 10 fJ. Bi–material cantilevers have also been use to measure “heat transfer - distance” curves a heat transfer analogy of the force–distance curves obtained using atomic force microscopes. In this work, we concentrate on characterization of heat transfer from the microcantilever. The two quantities that we focus on are the thermal conductance of the cantilever, Gcant (units WK−1), and the thermal conductance due to microscale convection from the cantilever to the ambient fluid, Gconv (units WK−1). The deflection of the cantilever to changes in its thermal environment is measured using the shift in position, on a position sensitive detector, of a laser beam focused at the tip of the cantilever. By determining the response of the microcantilever to (1) uniform temperature rise of the ambient, and (2) change in power absorbed at the tip, the thermal conductance of heat transfer from the cantilever can be determined. When the experiment is performed at low enough ambient pressure so that convection is unimportant (¡ 0.1 Pa), Gcant can be measured. When the experiment is performed at atmospheric pressure the heat transfer coefficient due to convection from the cantilever can be determined.

scholarly journals CONFORTO TÉRMICO E DESEMPENHO DE LEITÕES CRIADOS EM GAIOLAS ENRIQUECIDAS COM PISO DE RESÍDUOS DE EVA (ETILENO-ACETATO DE VINILA)

2019 ◽  
Vol 34 (2) ◽  
pp. 230-240 ◽  
Author(s):  
Silvia Noelly Ramos de Araújo ◽  
José Pinheiro Lopes Neto ◽  
José Wallace Barbosa do Nascimento ◽  
Fernanda Fernandes de Melo Lopes ◽  
Maria Luíza de Souza Rezende
Keyword(s):  
Thermal Comfort ◽  
Thermal Environment ◽  
Productive Performance ◽  
Weaned Piglets ◽  
Alternative Material ◽  
Globe Temperature ◽  
And Performance ◽  
Comfort Indices ◽  
Black Globe Temperature

CONFORTO TÉRMICO E DESEMPENHO DE LEITÕES CRIADOS EM GAIOLAS ENRIQUECIDAS COM PISO DE RESÍDUOS DE EVA (ETILENO-ACETATO DE VINILA)   SILVIA NOELLY RAMOS DE ARAÚJO1, JOSÉ PINHEIRO LOPES NETO2, JOSÉ WALLACE BARBOSA DO NASCIMENTO3, FERNANDA FERNANDES DE MELO LOPES4, MARIA LUIZA DE SOUZA REZENDE5   Engenharia Agrícola, Universidade Federal de Campina Grande, Rua Aprígio Veloso, 882 – Universitário, 58429-900, Campina Grande, Paraíba, Brasil, [email protected]; [email protected]; [email protected]; [email protected]; [email protected].   RESUMO: Objetivou-se analisar o conforto térmico de leitões na fase de creche, mantidos em instalações com piso de placas de resíduos EVA, utilizadas para reduzir a transferência de calor dos animais para a superfície de contato, utilizando-se 24 leitões desmamados, com idade média de 23 + 2 dias, distribuídos em 8 baias, utilizando-se dois tipos de pisos: tratamento 1- Placas de EVA + piso plástico vazado e o tratamento 2- piso plástico vazado. O delineamento experimental foi inteiramente casualizado (DIC) e a comparação entre as médias através do teste de Tukey (P<0,05). A caracterização do ambiente térmico foi realizada por meio do registro da temperatura do ar, umidade relativa, temperatura de globo negro, luminosidade e velocidade do vento. Para a análise do conforto térmico proporcionado pelos pisos utilizou-se os índices de conforto térmico (temperatura de globo negro e umidade e a carga térmica de radiação), o mapeamento térmico superficial (pisos e leitões) e o desempenho produtivo dos animais. Os resultados indicaram que, as placas sobre o piso mostraram ser eficiente na redução da transferência de calor sensível entre o piso-leitão, o que tornou o aquecimento mais eficaz para os animais.   Palavras-chaves: conforto térmico, creche suína, material alternativo, piso plástico.   THERMAL COMFORT AND PERFORMANCE OF PIGLETS CREATED IN ENRICHED CAGES WITH EVA WASTE FLOOR (VINYL ETHYLENE ACETATE)   ABSTRACT: The aim of this study was to analyze the thermal comfort of piglets in nursery phase, maintained in systems with EVA waste plates floor, used to reduce the animal heat transfer to the contact surface, using 24 weaned piglets, average age 23 + 2 days, distributed in 8 bays, using two types of floors: treatment 1: EVA plates + leaked plastic floor and treatment 2: leaked plastic floor. The experimental design was completely randomized (CRD) and the means were compared using Tukey's test (P<0.05). The characterization of the thermal environment was performed by recording the air temperature, relative humidity, black globe temperature, luminosity and wind speed. Thermal comfort indices (black globe temperature and humidity and thermal radiation load), thermal thermal mapping (floors and piglets) and the productive performance of animals were used to analyze the thermal comfort provided by the floors. The results indicated that the boards on the floor were shown to be efficient in reducing the transfer of sensible heat between the floor-piglet, which made heating more effective for the animals.   Keywords: thermal comfort, nursery, alternative material, plastic floor.

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