Sintese otimizada de sistemas de aquecimento solar de agua

AUTOR(ES)
DATA DE PUBLICAÇÃO

2000

RESUMO

The optimal design of a solar water heater is regarded as achieved when the set of design variables is such that produces the minimum cost of the equipment during its life-cycle. For summing up this cost, it is necessary to take account of acquisition costs, maintenance costs and expenses with auxiliary energy. In this work, a computational procedure for finding the optimal design was produced. The procedure takes in account several design conditions, such as daily water load profile, a typical meterological year, cost of components, and several other parameters. In the heart of this procedure, a non-linear programming algorithm was coupled to a long-term transient simulation routine in order to obtain optimal design solutions of multi-variable problems. This algorithm uses the conjugate gradient method. A case study was proposed for finding the optimal design of a domestic solar water heater with flat-plate collectors and thermosyphon circulation, for Brazilian Southeastern climate conditions. When a two parameters example is executed, it is possible to comprovate a good model performance by visualizing the optimum seek on a 3D surface. Case studies are presented, with up to seven design variables. The model has synthetised technical solutions of minimum cost that complies with the given load conditions

ASSUNTO(S)

pesquisa operacional programação não-linear aquecimento solar otimização matematica

ACESSO AO ARTIGO

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