Design and modeling of a concentrating photovoltaic thermal (CPV/T) system for a domestic application

Renno, Carlo; Petito, Fabio

doi:10.1016/j.enbuild.2013.02.040

Cited by 86 publications

(33 citation statements)

References 16 publications

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“…Hence, there are neither significant convective losses nor radiative losses. In particular, it has been observed in [10] that the thermal losses related to the CPV/T system and calculated according to the equations reported in [26], are included between 1% and 3%.…”

Section: Electric and Thermal Powermentioning

confidence: 99%

“…A CPV/T system coupled with an air conditioning plant in order to separate latent load from sensitive load is shown in [9]. Referring to the electric, heating and cooling loads of a domestic user, in [10] the design and model of a concentrating photovoltaic thermal system are studied. Moreover, in [11] the optimized value of the concentration factor able to decrease the CPV/T system size and to provide a fluid outlet temperature, that satisfies the thermal and cooling demands, is determined in each working condition.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic Simulation of a CPV/T System Using the Finite Element Method

Renno

Giacomo

2014

Energies

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Abstract:The aim of this paper is the determination of a concentrating thermo-photovoltaic (CPV/T) system dynamic model by means of the finite element method (FEM). The system consist of triple-junction InGaP/InGaAs/Ge (indium-gallium phosphide/indium-gallium-arsenide/germanium) solar cells connected to a metal core printed circuit board (MCPCB) placed on a coil circuit used for the thermal energy recovery. In particular, the main aim is to determine the fluid outlet temperature. It is evaluated corresponding both to a constant cell temperature equal to 120 °C, generally representing the maximum operating temperature, and to cell temperature values instantly variable with the direct normal irradiation (DNI). Hence, an accurate DNI analysis is realized adopting the Gordon-Reddy statistical model. Using an accurate electric model, the cell temperature and efficiency are determined together with the CPV/T module electric and thermal powers. Generally, the CPV system size is realized according to the user electric load demand and, then, it is important to evaluate the necessary minimum concentration ratio (Cmin), the limit of CPV system applicability, in order to determine the energy convenience profile. The fluid outlet temperature can be then obtained by the FEM analysis to verify if a CPV/T system can be used in solar heating and cooling applications. OPEN ACCESSEnergies 2014, 7 7396

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Section: Electric and Thermal Powermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dynamic Simulation of a CPV/T System Using the Finite Element Method

Renno

Giacomo

2014

Energies

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“…The theoretical study of an HCPV/T system by Renno and Petito [58], showed that the system can be used to satisfy electric, heating and cooling demand for domestic application in the south of Italy. In Italy, the typical annual household electricity and hot water demand in 2016 werẽ 2000 kWh/household/year each [21,22].…”

Section: Energy and Environmental Impact Performance Gapmentioning

confidence: 99%

“…Therefore, the operational HCPV/T 2000x system located in Palermo, Sicily (south of Italy) can be applied as a stand-alone system used to satisfy almost 80% of electricity for a typical residential house as well as 100% of hot water demand. The application of the HCPV/T 2000x system as a stand-alone system instead of grid-connected eliminates the infrastructural challenges of grid connection (including its associated environmental impacts) and replaces the need for traditional system non-RES [58].…”

Section: Energy and Environmental Impact Performance Gapmentioning

confidence: 99%

Environmental Impact of the High Concentrator Photovoltaic Thermal 2000x System

2019

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High Concentrator Photovoltaic Thermal (HCPV/T) systems produce both electrical and thermal energy and they are efficient in areas with high Direct Normal Irradiance (DNI). This paper estimates the lifecycle environmental impact of the HCPV/T 2000x system for both electrical and thermal functionalities. Process-based attributional method following the guidelines and framework of ISO 14044/40 was used to conduct the Life Cycle Assessment (LCA). The midpoint and endpoint impact categories were studied. It was found that the main hotspots are the production of the thermal energy system contributing with 50% and 55%, respectively, followed by the production of the tracking system with 29% and 32% and the operation and maintenance with 13% and 7%. The main contributor to the lifecycle environmental impact category indicators was found to be the raw materials acquisition/production and manufacturing of the thermal energy and tracking systems. The results indicate that the lifecycle environmental impact of the HCPV/T 2000x system is lower compared to fuel-based Combined Heat and Power (CHP) and non-Renewable Energy Sources (non-RES) systems.Sustainability 2019, 11, 7213 2 of 21 and HCPV/T systems include low Energy Payback Time (EPBT), land use reduction, and the potential increase in power density. CSP converts DNI into electrical and thermal energy by using concentrators and conventional power block such as steam turbines, gas turbines and Stirling engines [5].Concentrator solar energy technologies could be directly applied to the buildings or utility-scale and potentially contribute to the global electricity requirements with 7 and 25% by 2030 and 2050, respectively [6][7][8]. However, the application of those technologies could be limited in the regions of high DNI such as MENA (Middle East and North Africa), Mediterranean and the Sun Belt (vast areas of the United States and New Mexico) [6]. In terms of environmental impact, those technologies demonstrated much lower Global Warming Potential (GWP) in comparison to the fossil fuels sources [8,9]. Life Cycle Assessment (LCA) as a useful tool for assessing environmental impact has been applied on the LCPV, LCPV/T, HCPV, HCPV/T and CSP [8][9][10][11][12]. It was found that the use of HCPV/T system for domestic application replacing the traditional systems like electric national grid, boiler and electric heat pump, could reduce annual carbon dioxide (CO 2 ) by 3376 kg [10], while LCPV in building application by 93-101 g /kWh with 2.4 years EPBT and less than 142 g/kWh with 0.7 years EPBT [11,12]. The low values of EPBT are mainly as a result of reduced primary energy demand required for production of the HCPV/T and LCPV systems and their increased efficiency during energy production [10,13,14]. The GWP for HCPV was reported to vary between 16 and 45 g CO 2 -eq/kWh [8,9,15]. The lifecycle CO 2 emission of a parabolic trough and CSP power plant was estimated to be 26 g CO 2 -eq/kWh [16], and 36.3 g CO 2 -eq/kWh [17], respectively. All those studies carried out an environm...

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“…Finally, after sensitivity analysis on the system, the environmental permutations of the parameters have an effect on these analyses. In 2013, Renno et al conducted the design and modeling of a CPVT unit for the domestic application, and assessed the system economically and energetically. In 2013, Buonomano et al conducted a study on a solar trigeneration system based on CPVT collectors, which ultimately achieved the results that were appropriate for the different electrical and thermal properties.…”

Section: Introductionmentioning

confidence: 99%

Optical modeling and optimization of parabolic trough concentration photovoltaic/thermal system

Alayi

Kasaeian

Atabi

2019

Env Prog and Sustain Energy

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In this research, a genetic algorithm has been used to optimize the focal area of the parabolic trough concentration photovoltaic/thermal. First, based on the physical and thermodynamic variables, the system modeling was performed; then, by changing the variables were calculated the effect of these parameters on the electrical and thermal efficiencies. In the next step, the optimization was conducted by the mentioned algorithms. The objective function consists of two targets of electrical efficiency combined with thermal efficiency. The optimization variables include the length of the system, the pipe diameter, the collector diameter, mass flow rate, and the photovoltaic cell width. After running the program in the normal mode, the highest electrical and thermal efficiencies were 0.2063 and 0.4473 for the length of 10 m, the collector diameter of 1.2 m, the flow rate of 0.15 kg/s, the pipe diameter of 0.03 m, and the photovoltaic cell width of 0.02 m. According to the genetic algorithm, the optimal answer for the total efficiency of this system is 0.84737.

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Design and modeling of a concentrating photovoltaic thermal (CPV/T) system for a domestic application

Cited by 86 publications

References 16 publications

Dynamic Simulation of a CPV/T System Using the Finite Element Method

Dynamic Simulation of a CPV/T System Using the Finite Element Method

Environmental Impact of the High Concentrator Photovoltaic Thermal 2000x System

Optical modeling and optimization of parabolic trough concentration photovoltaic/thermal system

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