Heat Reservoir
Mostrando 1-12 de 42 artigos, teses e dissertações.
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1. HYBRID SOLAR HEAT PUMP SYSTEM FOR WATER HEATING
ABSTRACT A comparative test of water heating between the hybrid system - solar collector with heat pump - and a system with conventional supplementary heating - with high electric power - was performed. For this, a small capacity heat pump was installed, which was later installed together with a solar heating system, composed of a 250 L thermal reservoir and
Eng. Agríc.. Publicado em: 12/08/2019
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2. Comparison of 1D and 3D reservoir heat transport models and temperature effects on mass transport
RESUMO Modelos 1D e 3D de transporte de calor são comparados em um reservatório dentrítico no Brasil. Os períodos de estratificação para ambos modelos foram estimados usando índices físicos e gradientes de temperatura. O modelo tridimensional reproduz a temperatura da coluna d'água com mais acurácia, no entanto, o cálculo de índices físicos (nú
RBRH. Publicado em: 01/07/2019
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3. SimulaÃÃo e avaliaÃÃo de um sistema de aquecimento solar de Ãgua utilizando balanÃo energÃtico / Simulation and evaluation of a system of solar water heating using energy balance
This work was developed at the State University of West of Paranà â UNIOESTE, campus de Cascavel and was aimed at developing a computer program to simulate and scale, optimally, a system of solar water heating. To determine the efficiency parameters of the system were installed three solar collectors of 1.05 m2 each, brand Pro Sol, coupled to a thermal res
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/02/2012
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4. Estudo da perda de carga e calor no poço injetor no processo De drenagem gravitacional assistida por vapor (SAGD)
The oil companies in the area in general are looking for new technologies that can increase the recovery factor of oil contained in reservoirs. These investments are mainly aimed at reducing the costs of projects which are high. Steam injection is one of these special methods of recovery in which steam is injected into the reservoir in order to reduce the vi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/09/2011
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5. RESTARTABILITY OF VISCOPLASTIC MATERIALS IN PIPES / REINÍCIO DE ESCOAMENTO DE MATERIAIS VISCOPLÁSTICOS EM UM TUBO
On of the main problems in the operation of subsea pipelines that convey paraffin oils is the flow startup after long stoppages. Along the path from the reservoir to the platform, the oil experiences significant heat losses, especially to the low-temperature water at the sea bottom. When there is no flow, the oil may reach very low temperatures. Cooling indu
Publicado em: 2011
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6. Estudo experimental da combustão molhada na recuperação de oleo pesado / Experimental study of the wet combustion on heavy oil recovery
One way to improve the performance of the oil recovery method, known as dry forward in situ combustion, is to inject water either simultaneously or intermittently with the air, named as wet forward in situ combustion. The specific heat of the dry air is considerably lower than that of water, such that water may render a better transport of the heat generated
Publicado em: 2010
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7. Avaliação de sistemas de aquecimento de água solar-gás / Evaluation of heating water solar-gas
Neste trabalho realizou-se a simulação computacional de sistemas de aquecimento de água solar-gás através do programa TERMOSIM, visando atender o consumo de uma casa popular hipotética situada em Porto Alegre. Foram simulados sistemas combinando reservatórios de 300, 400, 500 e 600 litros acoplados a 1, 2, 3, 4 e 5 coletores. Os resultados mostraram q
Publicado em: 2010
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8. Sistema de captaÃÃo de energia solar para uma torre de dessalinizaÃÃo tÃrmica com recuperaÃÃo de calor / System of captation of solar energy for a tower of thermal dessalinizaÃÃo with heat recovery
This dissertation presents the experimental result of a system to absorb solar energy to heat up a desalination tower with heat recovery mechanism and a change made in the heated water distribution at the heat storage tank. The system to absorb solar energy consists of solar thermal flat plate collectors for high temperatures and it responsible for the conve
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/09/2009
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9. Optimal paths for minimizing lost available work during heat transfer processes with a generalized heat transfer law
A common of finite-time heat transfer processes between high- and low-temperature sides with a generalized heat transfer law [q ∝ (Δ(Tn ))m] are studied in this paper. The optimal heating and cooling configurations for minimizing lost available work are derived for the fixed initial and final temperatures of the working fluid of the system (low-temperatur
Brazilian Journal of Physics. Publicado em: 2009-03
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10. Análise do desempenho térmico de um sistema de aquecimento solar utilizando coletor com superfície absorvedora em chapas de PVC
Its presented a solar collector to be used in a system for heating bath water, whose main characteristic is its low cost. The collector consists of five plates of PVC with 10 mm thick, 200 mm in width and 1400mm in length, with an area equal to 1.4 square meters. The plates were connected in parallel to the ends of PVC tubes of 40 mm and 32
Publicado em: 2009
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11. 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
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12. Estudo térmico de um sistema solar de aquecimento de água residencial para duas configurações de superfície absorvedora
It presents a solar collector to be used in a system for heating water for bathing, whose main characteristics are its low cost and easy manufacturing and assembly. The absorbing surface of the collector is formed by an aluminum plate with eight flaps where they lodge PVC pipes. The catchment area of solar radiation corresponds to 1.3 meters. The collector b
Publicado em: 2009