Heater
Mostrando 25-36 de 64 artigos, teses e dissertações.
-
25. Experimental investigation of thermal conductivity coefficient and heat exchange between fluidized bed and inclined exchange surface
The paper presents experimental research of thermal conductivity coefficients of the siliceous sand bed fluidized by air and an experimental investigation of the particle size influence on the heat transfer coefficient between fluidized bed and inclined exchange surfaces. The measurements were performed for the specific fluidization velocity and sand particl
Brazilian Journal of Chemical Engineering. Publicado em: 2009-06
-
26. Estudo de desempenho do aquecedor solar de baixo custo
One alternative to reduce consumption of electric energy to heat water will be popularize the use of solar energy. This work comes to contribute of studies about the Low Cost Solar Heater , ASBC, which is a new concept of solar water heater for home, all made by polymeric materials with relatively small investment and can be built manually. The plate of the
Publicado em: 2009
-
27. Building systems of gas water heating: parameters of design and management / Sistemas prediais de aquecimento de água a gás: Parâmetros de dimensionamento e gerenciamento
The building systems of water heating are responsible for a significant parcel of energy consumption in country, and the efficiency of use of this energy is related to the quality of projects and constructive alternatives that allow rationalizing the use of natural resources. With the trend of incorporating the measurement of individual water and solar heati
Publicado em: 2009
-
28. Desempenho produtivo e tolerância térmica de juvenis de acará-bandeira (Pterophyllum scalare) alimentados com diferentes fontes de lipídeos / Productive performance and thermal tolerance of juvenile freshwater angelfish (Pterophyllum scalare) fed with different lipid sources
The present study was conducted to evaluate the influence of diets with different fatty acids composition, on the productive performance, as well as cold and heat tolerance of juvenile freshwater angelfish (Pterophyllum scalare). The experiment was accomplished in three phases. During phase one, the productive performance of freshwater angelfish was evaluate
Publicado em: 2009
-
29. The Brazilian solar heater : theory and practice in favor of a sustainable transfer of technology / O aquecedor solar brasileiro : teoria e pratica em prol de uma transferencia de tecnologia sustentavel
This research represents a contribution to the hydric resources, energetics and environmental, serving as a technical aid to the energetical planning per the demand side, acting favorably on the stability of the conventional electrical systems. It has been studied a reduction on the manufacturing cost of an industrialized solar heater that performs well duri
Publicado em: 2008
-
30. Avaliação comparativa do ciclo de vida entre sistemas de aquecimento solar de água utilizados em habitações de interesse social
The industrialized solar hot water systems are produced with high cost materials for the acquisition of low income population, because of that, many alternative systems, that aims a reduction of cost of the product for the user, have been proposed. The present work compares the environmental impacts caused by industrialized and alternative solar hot water sy
Publicado em: 2008
-
31. A inserção da escola na comunidade : desenvolvendo projetos na perspectiva de uma educação pelo trabalho
This work was developed in the perspective of offering to high school teachers an alternative for carrying out in their schools a pedagogical work that has as directing axis the articulation of school with work, youth and community. The way in which school is structured does not satisfy youths need for knowledge, abilities and moral values so that young peop
Publicado em: 2008
-
32. UtilizaÃÃo da energia solar em sistemas de aquecimento de Ãgua residencial / The solar energy uses in home water heater systems
A conscientizaÃÃo da importÃncia do meio ambiente tem incentivado o estudo de novas fontes energÃticas renovÃveis e menos poluentes. Dentre essas fontes, a energia solar se destaca por ser perene e limpa. A utilizaÃÃo da energia solar em sistemas de aquecimento de Ãgua residenciais, pela substituiÃÃo do chuveiro elÃtrico, pode colaborar com a econ
Publicado em: 2008
-
33. Avaliação numérica e experimental de técnicas de controle para conforto térmico em edificações
Abstract: This work addresses the problem of numerical and experimental analysis of comfort control algorithms for air conditioning systems with one manipulated variable. This is a frequent case present in HVAC (Heating, Ventilating and Air Conditioning) systems. The aim of HVAC equipment is to promote thermal comfort for building occupants. So, in order to
Publicado em: 2008
-
34. Uso do óleo vegetal em motor estacionário de ciclo diesel / Vegetable oil use in stationary engine of diesel cycle
In terms of liquid biofuels, the questions related to alcohol are in a developed level with the creation of a productive chain where all the processes are technologically decided since the production of the sugar cane until the alcohol consumption with the development of the multifuel cars. As for the use of vegetable oils, some barriers must be overcome, ma
Publicado em: 2008
-
35. Eficiência energética: metodologia para avaliação de aquecedores de água residenciais de acumulação elétricos. / Energy efficiency: methodology for evaluation of residential storage electrical water heater.
This work proposes a method with objective of evaluating the energy efficiency of electrical residential storage water heaters. The heaters were submitted to an operation cycle simulating a use condition for the calculation of the efficiency. This cycle with duration of one day is composed by the phases: hot water withdrawal, temperature recovery and standby
Publicado em: 2007
-
36. Análise de imagens na avaliação do comportamento, do bem-estar e do desempenho de pintos de corte submetidos a diferentes sistemas de aquecimento / Images analysis in the behavior evaluation, welfare and performance of the young chicken submitted to different heating systems
Currently Brazil is the country that owns the biggest number of relative information to the thermal requirement of opened buildings in summer conditions of tropical climates. However, exists the need of investigations concerning the energy expense, efficiency of the heating systems, animal welfare and contamination levels of the air for the architectural and
Publicado em: 2007