Low-concentrating water-cooled PV-thermal hybrid systems for high latitudes

Brogren, Maria; Karlsson, Björn

doi:10.1109/pvsc.2002.1190956

Cited by 19 publications

(17 citation statements)

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“…Therefore, in order to achieve higher electrical performance and longer lifetime, a CPV module must be forcedly cooled, and simultaneously, the available thermal energy captured and stored by coolant can be used for other useful applications. It is generally accepted that hybrid concentrating photovoltaic/ thermal (HCPV/T) systems [3][4][5][6][7][8] have higher and more stable performance when compared to individual solar devices.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of a Combination System of Concentrating Photovoltaic/Thermal Collector and Thermoelectric Generators

Zhou

Meyers

et al. 2014

Journal of Electronic Packaging

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Thermoelectric (TE) modules utilize available temperature differences to generate electricity by the Seebeck effect. The current study investigates the merits of employing thermoelectrics to harvest additional electric energy instead of just cooling concentrating photovoltaic (CPV) modules by heat sinks (heat extractors). One of the attractive options to convert solar energy into electricity efficiently is to laminate TE modules between CPV modules and heat extractors to form a CPV-TE/thermal (CPV-TE/T) hybrid system. In order to perform an accurate estimation of the additional electrical energy harvested, a coupled-field model is developed to calculate the electrical performance of TE devices, which incorporates a rigorous interfacial energy balance including the Seebeck effect, the Peltier effect, and Joule heating, and results in better predictions of the conversion capability. Moreover, a 3D multiphysics computational model for the HCPV-TE/T water collector system consisting of a solar concentrator, 10 serially connected GaAs/Ge photovoltaic (PV) cells, 300 couples of bismuth telluride TE modules, and a cooling channel with heat-recovery capability, is implemented by using the commercial FE-tool Comsol Multiphysics V R . A conjugate heat transfer model is used, assuming laminar flow through the cooling channel. The performance and efficiencies of the hybrid system are analyzed. As compared with the traditional photovoltaic/thermal (PV/T) system, a comparable thermal efficiency and a higher 8% increase of the electrical efficiency can be observed through the PV-TE hybrid system. Additionally, with the identical convective surface area and cooling flow rate in both configurations, the PV-TE/T hybrid system yields higher PV cell temperatures but more uniform temperature distributions across the cell array, which thus eliminates the current matching problem; however, the higher cell temperatures lower the PV module's fatigue life, which has become one of the biggest challenges in the PV-TE hybrid system.

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Section: Introductionmentioning

confidence: 99%

Performance Analysis of a Combination System of Concentrating Photovoltaic/Thermal Collector and Thermoelectric Generators

Zhou

Meyers

et al. 2014

Journal of Electronic Packaging

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“…Brogren et al [98] developed a ready-to-use façade element, including parabolic aluminum reflectors, Cu(In, Ga)Se 2 -based Siemens ST5 thin-film PV modules and an EPS insulation. After that, the thin film module presented above was exchanged by a PVT hybrid module using c-Si solar cells as the receiver [99], as illustrated in Fig. 15.…”

Section: Parabolic Reflector and Troughmentioning

confidence: 99%

A review of concentrated photovoltaic-thermal (CPVT) hybrid solar systems with waste heat recovery (WHR)

Jü

Liao

et al. 2017

Science Bulletin

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“…To remedy this situation, excess heat is transferred to a fluid circulating in channels below the cells. The authors claim that heat at 50 o C can be produced from this system, and that about 300 kWh/m 2 of heat, and 100 kWh/m² of electricity, will be produced annually in Sweden, compared to a conventional (selective surface) thermal system that delivers approximately 400 kWh/m² of heat annually [15]. The authors note that the major benefit of the system is the relative reduction in PV area required when using the reflectors and the benefit of providing both electricity and heat energy such as is done in co-generation applications.…”

Section: Domestic Hot Watermentioning

confidence: 99%