Dynamic simulation and exergetic optimization of a Concentrating Photovoltaic/ Thermal (CPVT) system

Karathanassis, Ioannis K.; Papanicolaou, E.; Belessiotis, V.; Bergeles, G.

doi:10.1016/j.renene.2018.12.085

Cited by 28 publications

(13 citation statements)

References 36 publications

(18 reference statements)

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“…For example, Herez et al [26] discuss a triangular geometry SRC-PVT model and consider the PV to be in direct contact with the environment. In contrast, Karathanassis et al [45] present a model of a rectangular-geometry SRC-PVT with seven different layers. The first layer is a glass cover that isolates the PV from the environment.…”

Section: Thermal Resistance Analysis Of the Src-pvtmentioning

confidence: 99%

A Review of the Modeling of Parabolic Trough Solar Collectors Coupled to Solar Receivers with Photovoltaic/Thermal Generation

Chavarría-Domínguez,

De León-Aldaco,

Velázquez-Limón

et al. 2024

Energies

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This paper is a summary of the last ten years of work on the study of parabolic trough collectors (PTCs) and compound parabolic collectors (CPCs) coupled to photovoltaic and thermal solar receiver collectors (SCR-PVTs). While reviewing the state of the art, numerous review papers were found that focused on conventional solar receiver collector (SRC) technology for solar thermal generation. However, there is a lack of review papers summarizing SRC-PVT hybrid technology for solar electric/thermal generation, which would be beneficial for researchers interested in this area of research. This paper provides a review of SRC-PVT hybrid technologies. The theoretical foundations for analyzing and modeling PTC and CPC concentrators coupled to SRC-PVT are described, with an emphasis on modeling through thermal resistances and energy balances. Additionally, this section provides a concise overview of previous studies that have addressed the modeling of PTC and CPC collectors coupled to SCR-PVT, as well as experimental information useful for the validation of new mathematical models of SRC-PVT.

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Section: Thermal Resistance Analysis Of the Src-pvtmentioning

confidence: 99%

A Review of the Modeling of Parabolic Trough Solar Collectors Coupled to Solar Receivers with Photovoltaic/Thermal Generation

Chavarría-Domínguez,

De León-Aldaco,

Velázquez-Limón

et al. 2024

Energies

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“…For example, in agricultural applications, since a variety of objects are to be detected, changes in the environment will have diferent contents to collect information, so it is necessary to collect temperature, humidity, soil salinity, and sunlight information. Te function and energy consumption of each sensor node are diferent, and the node performance is also different [11,12]. Terefore, this type of sensor network is called a "heterogeneous network," and a wireless sensor network is one of the most representative networks.…”

Section: Analysis Of Related Technologies Of Iot Heterogeneousmentioning

confidence: 99%

Display Design Model Based on the Internet of Things Prototype System

Wang

Yan

2023

Mobile Information Systems

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The display design of the Internet of Things prototype system is the top priority of the design of the display space, and it is also a problem to be studied in the future development of the display space. However, the current research on the display design direction of IoT prototype system is not deep enough. This article mainly studies the display design model based on the Internet of Things prototype system. This article mainly uses the related technology of IoT heterogeneous protocol to analyze the structure of the IoT prototype system and proposes to use the heterogeneous network to speculate the future development trend of the IoT. In the aspect of display design, applications such as network information retrieval and data mining at the level of missions are accelerated in depth so that the arrangement of multiple factors is more reasonable. Finally, the data conversion function is used to design each port in the IoT accessor architecture. The protocol is adapted and converted, and the parsed protocol is uniformly encapsulated and uniformly transmitted on the platform. The model in this article integrates various heterogeneous detection networks, realizes the standardized operation of top-level applications, and completes the decoupling of top-level applications. It is encapsulated in a unified protocol and meets the standard operation requirements of web applications. The experimental data in this article show that the frequency of the audio signal designed by the system under normal working conditions is mostly concentrated at about 180 Hz, and the highest frequency value is less than 800 Hz; when the system has a partial discharge failure, the frequency of the audio signal is mostly concentrated between 1400 Hz and 1800 Hz. The experimental results of this article show that the prototype system of the Internet of Things can identify and judge the state of the display design model. Applying it in practice can effectively solve practical problems such as large-scale data storage of the Internet of Things.

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“…The optical performances significantly affect the energy efficiency of a CPV system. In fact, only a well-sized optical system can adequately concentrate the solar radiation on the TJ cells ensuring a high electric producibility [20]. The geometrical concentration factor (C geo ) is equal to the ratio between solar concentrator area (A conc ) and TJ cell area (A c )…”

Section: Modeling Of the Cpv/t Systemmentioning

confidence: 99%

Theoretical and Experimental Evaluation of the Working Fluid Temperature Levels in a CPV/T System

Renno

2020

Energies

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A linear focus Concentrator Photovoltaic and Thermal (CPV/T) system can match the thermal demands of a user. The evaluation of the cooling fluid temperature levels of a CPV/T system is fundamental to understand if this system is capable of satisfying the typical thermal requirements of a residential user (heating, cooling and domestic hot water). First, an experimental line-focus CPV/T system, realized in the Laboratory of Applied Thermodynamics of the University of Salerno (Italy), has allowed to determine the cooling fluid temperature at the CPV/T system outlet. Successively, the cooling fluid temperatures, experimentally obtained, have been compared with the same temperatures calculated by means of a theoretical model under the same operation conditions. A deviation in terms of the percentage relative error between theoretical and experimental results included between about 0.5% and 5%, has been found. The goodness of the theoretical–experimental comparison in terms of the temperature of the operation fluid at the CPV/T system outlet has represented a fundamental point to evaluate theoretically, by means of the TRNSYS software, the other levels of temperature of an integrated system, constituted by CPV/T system, thermal tank and user, for different temporal scenarios (hourly, weekly, monthly and yearly). The input data of the TRNSYS model are: Direct Normal Irradiance (DNI), Triple-Junction (TJ) cell temperature and environmental conditions. A tank model is also adopted to satisfy the thermal energy demand peaks, and the temperature stratification in the tank linked to the CPV/T system, as function of the height, is obtained in winter and summer. It is important to define these thermal levels to verify if a CPV/T system is capable to satisfy the residential user energy demands or a thermal energy integration is necessary in some periods of the year. A good stratification has been noted in the summer season, with temperature values that are variable between about 40 and 90 °C. From April to October, the tank average temperature is generally resulted about 10 °C higher than the temperature required by the fluid sent to the residential user, and a very low integration is then necessary. It has been verified that the CPV/T system covers a large part of the thermal energy needs of the residential user during the year; the coverage is limited only in the winter months.

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Dynamic simulation and exergetic optimization of a Concentrating Photovoltaic/ Thermal (CPVT) system

Cited by 28 publications

References 36 publications

A Review of the Modeling of Parabolic Trough Solar Collectors Coupled to Solar Receivers with Photovoltaic/Thermal Generation

A Review of the Modeling of Parabolic Trough Solar Collectors Coupled to Solar Receivers with Photovoltaic/Thermal Generation

Display Design Model Based on the Internet of Things Prototype System

Theoretical and Experimental Evaluation of the Working Fluid Temperature Levels in a CPV/T System

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