Efficiency of a Combined Solar Concentrator Cell and Thermal Power Engine System

Goetzberger, A.; Bronner, W.; Wettling, W.

doi:10.1007/978-94-011-3622-8_3

Cited by 2 publications

(19 citation statements)

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“…Even though the model of the hybrid converter is here kept unchanged, some details will be modified. Thus, a theoretical solar cell model is developed in section 3 and compared with the simple model of PV conversion from [3]. Then, an endoreversible thermal engine is supposed to be used to convert heat into mechanical work.…”

Section: Model Of Solar Hybrid Convertermentioning

confidence: 99%

“…Consequently, the energy losses due to heat transfer into, and from, the thermal engine are taken into account and the efficiency η T E is smaller than the unrealistically high Carnot efficiency (which is often used as a theoretical tool). Note that in [3] an empirical formula for the engine efficiency (equation (5.4), below) was used. Details of our thermal engine model are given in section 4.…”

Section: Model Of Solar Hybrid Convertermentioning

confidence: 99%

“…Computations are performed for materials currently used for PV conversion. The results are compared with those obtained using the 0022-3727/96/010246+07$19.50 c 1996 IOP Publishing Ltd model of Goetzberger et al [3]. Some details concerning the optimum operating temperature of hybrid solar converters are presented.…”

Section: Introductionmentioning

confidence: 99%

“…High efficiency solar cells have much potential for applications in future power generating systems because the costs of energy production are drastically reduced due to improved efficiency [1,2]. Efficiencies above 35% have already been realized and further improvement is expected if tandem or multijunction configurations are used [3]. However, there always exists a part of the incoming solar radiation flux which cannot be converted directly into electrical power and which is dissipated as heat.…”

Section: Introductionmentioning

confidence: 99%

“…In this paper we deal with the optimization of a combined solar system. For this purpose we use the simple model of a solar hybrid converter proposed by Goetzberger et al [3]. Essentially, this model consists of three parts: (i) a simple solar cell model, (ii) an empirical thermal engine model and (iii) a hybrid converter model, which mainly shows how the efficiencies of the two conversion units (i.e.…”

Section: Introductionmentioning

confidence: 99%

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Thermodynamic optimization of non-concentrating hybrid solar converters

Bădescu

Landsberg

Dinu

1996

J. Phys. D: Appl. Phys.

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A model of a hybrid solar converter proposed by Goetzberger et al was used to optimize the overall efficiency of the combined system in two different situations. Firstly, the original semi-empirical models for the solar cell and the thermal engine were used. Secondly, more general theoretical models were proposed for each of the two components of the combined converter. The theoretical model of the solar cell produces results in good agreement with the simple empirical model when the ideal cell with no reflection losses is considered. Both the theoretical model and the empirical model of the thermal engine give similar results in the range of temperatures allowed for the proper usage of a solar cell. Reasonable low optimum temperatures could be reached by using materials with a band gap of less than 2 eV. Some ways of improving the hybrid solar converter model proposed by Goetzberger et al are discussed at the end of the paper.

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Section: Model Of Solar Hybrid Convertermentioning

confidence: 99%

Section: Model Of Solar Hybrid Convertermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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