Cooling Systems
Mostrando 1-12 de 141 artigos, teses e dissertações.
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1. CHARACTERIZATION OF THE THERMAL ENVIRONMENT IN BROILER HOUSES WITH DIFFERENT CLIMATE CONTROL SYSTEMS
ABSTRACT The environment control of broiler houses must be done adequately to provide good thermal conditions to broilers without wasting energy. The objective of this study was to characterize the thermal environment in two mechanically ventilated broiler houses with a negative pressure ventilation system, one with a cellulose pad evaporative cooling system
Eng. Agríc.. Publicado em: 2020-10
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2. PHYSICAL AND THERMAL PROPERTIES OF EUCALYPTUS WOOD CHARCOAL.
ABSTRACT The knowledge of the physical and thermal properties of eucalyptus charcoal is of fundamental importance in the design of equipment and development of cooling technologies. However, literature about physical properties for eucalyptus wood charcoal is largely unavailable, especially the thermal and aerodynamic properties, for the same material. The a
CERNE. Publicado em: 2020-03
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3. Efeito de dois sistemas de resfriamento sobre os hormônios tireoidianos e as variáveis termofisiológicas de matrizes suínas em lactação
RESUMO Avaliaram-se os efeitos do sistema de resfriamento evaporativo com pressão negativa (SRE) e aspersão de água sobre o telhado (AAT), as variáveis termofisiológicas, os hormônios tireoidianos e a relação neutrófilo:linfócito (N:L) em porcas. Utilizaram-se 61 fêmeas em lactação, que foram divididas nos dois ambientes térmicos, sendo 30 em S
Arq. Bras. Med. Vet. Zootec.. Publicado em: 13/12/2019
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4. Evaluation of the Heat and Energy Performance of a Datacenter Using a New Efficiency Index: Energy Usage Effectiveness Design – EUED.
Abstract Data Centers are growing steadily worldwide, and they are expected to continue growing up to 53% in 2020. Energy efficiency, in high power consumption, is a key venue. There are methodologies to measure this efficiency, one example is using the PUE (Power Usage Effectiveness) index. In this paper is proposed a new index for measuring efficiency at
Braz. arch. biol. technol.. Publicado em: 25/11/2019
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5. Potencialidade de uso não potável de água de lagoa de detenção
RESUMO As águas de lagoas de detenção geralmente não são utilizadas produtivamente e o seu potencial é desperdiçado. Por estarem disseminadas nas cidades, a utilização dessas águas pode reduzir os custos com transporte de água, além de permitir a preservação de águas de melhor qualidade para fins mais nobres. Algumas das possíveis utilizaçõ
Eng. Sanit. Ambient.. Publicado em: 25/11/2019
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6. EXTRACTION CAPACITY OF GRASSES GROWN IN CONSTRUCTED WETLAND SYSTEMS USING DIFFERENT ARRANGEMENTS AND SUBSTRATES
ABSTRACT Constructed wetland systems have been used to treat different wastewater; among their essential components are the cultivated plant species and type of substrate used to fill them. The choice of plant species and type of substrate are important for the good system performance in wastewater treatment. This study aimed to evaluate the extraction capac
Eng. Agríc.. Publicado em: 04/11/2019
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7. Avaliação energética de um edifício de serviços: Escola Superior Aveiro Norte, Portugal
Resumo O objetivo deste trabalho é realizar uma avaliação energética da Escola Superior Aveiro Norte (ESAN), situada no município de Oliveira de Azeméis (Portugal). Esse edifício possui tecnologias de climatização pouco convencionais em Portugal, como bombas de calor geotérmicas associadas a piso radiante e ventilação, com pré-aquecimento de ar,
Ambient. constr.. Publicado em: 03/10/2019
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8. Efeito da mesogeometria da broca e das condições de lubrirrefrigeração sobre o acabamento do furo em aço ARBL DIN S700MC
RESUMO O trabalho apresenta um estudo sobre os efeitos decorrentes da modificação da mesogeometria de uma broca helicoidal de metal-duro com revestimento de TiAlN sobre o acabamento superficial do aço de alta resistência e baixa liga DIN S700MC utilizando diferentes condições de aplicação de fluidos lubrirrefrigerantes (em abundância, em mínima qua
Matéria (Rio J.). Publicado em: 20/05/2019
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9. Thermal profiles in pervious concrete during summer rain simulations
ABSTRACT Pervious concrete pavement systems may have many environmental benefits including the mitigation of heat island impacts. This mitigation is a complex combination of pervious concrete’s insulating capability and its ability to store water which may provide evaporative cooling. However, the introduction of water may also bring heat into the system,
Matéria (Rio J.). Publicado em: 18/10/2018
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10. Releasing systems for aerospace industry based upon Shape Memory Alloys: characterization of materials for actuators
ABSTRACT Releasing and deployment maneuvers carried out during space satellites launching are usually performed by utilizing pyrotechnics loads. However, it is considered convenient to replace this technique by others not requiring explosives (Non Explosive Actuators-NEA). This is mainly due to the necessity of reducing high-shock and vibrations induced leve
Matéria (Rio J.). Publicado em: 19/07/2018
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11. Impact of Alloy Composition and Thermal Stabilization on Martensitic Phase Transformation Structures in CuAlMn Shape Memory Alloys
Alloys of CuAlMn are known as cheap, high strength shape memory alloys with an excellent damping capacity within their austenitic-martensitic phase transformation, compared to alloy systems like NiTi, CuZnAl or MnCu. But CuAlMn alloys have disadvantage due to generation of voids by a high shrinkage which further increases the existing proneness to stress cra
Mat. Res.. Publicado em: 19/07/2018
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12. Mathematical Modeling And Numerical Simulation of Dropwise Condensation on an Inclined Circular Tube
ABSTRACT: Dropwise condensation can improve heat transfer process and, consequently, leads to considerable reduction in size and weight of condensers as well as improvement in the dehumidification process in many applications, especially in civil transport aircraft. It can also be used as an efficient cooling tool for electronics and electrical systems in ai
J. Aerosp. Technol. Manag.. Publicado em: 2017-12