A novel solar concentrator system for combined heat and power application in residential sector

Ancona, Maria Alessandra; Bianchi, Michele; Diolaiti, Emiliano; Giannuzzi, Alessandra; Melino, F.; Peretto, A.

doi:10.1016/j.apenergy.2016.03.026

Cited by 15 publications

(5 citation statements)

References 37 publications

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“…Especially cells are connected in series. In order to characterize the degree of mismatch of the module, η net is used as a network efficiency, which can be defined as follows [54] η net ¼ P m i¼1 P act;cellÀi P m i¼1 P max;cellÀi (31) where P act,cellÀi is the ith cell's actual output power in the module; P max,cellÀi is the ith cell's maximum output power of the module; m is the number of cells under the average irradiance intensity for all i.…”

Section: Model Description and Performance Evaluationmentioning

confidence: 99%

“…Due to the low density of photonic modes in monochromatic light, the main challenge of the narrow-band TPV approach is establishing high quasimonochromatic thermal irradiance at a high-power density. [31] Therefore, some focusing lens and geometry cavities have been considered in the literature to improve the high irradiance of thermal radiant sources. [32][33][34] Lindberg et al [35] present an internally reflecting egg-shaped double cone with the emitter at one edge, an edge filter at the wide center, and the TPV array at the other end.…”

Section: Introductionmentioning

confidence: 99%

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A Single Spectral Optical Path Design of the Thermophotovoltaic System for Improving Irradiance Intensity and Uniformity

Liu

Chen

et al. 2022

Energy Tech

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In the thermophotovoltaic (TPV) system, thermophotovoltaic cells can produce a high output power density. According to existing research results, concentrated irradiance is adopted to achieve high‐level thermophotovoltaic cell output. However, irradiance nonuniformity on the surface of the thermophotovoltaic cell can occur when the energy is concentrated. Such nonuniformity will destroy the balance of temperature and cause a spectrum mismatch of the cell, which will also reduce the reusability. To address these problems, a single spectral TPV optical path with spectral selectivity is proposed. Between the filter and the thermophotovoltaic cell module, a four‐prismatic straight funnel is designed and added. The Monte Carlo ray‐tracing method is used to examine the irradiance intensity and uniformity of the cell surface. The current–voltage characteristics of the cell module are computed using a single‐diode model. The results indicate that the uniformity of the TPV cell module can be maintained above 90% and the average cell module power density is 0.0861 W cm−2 with the addition of a four‐prismatic straight funnel. Meanwhile, the network efficiency and the system efficiency are 82.76% and 4.56%, respectively.

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Section: Model Description and Performance Evaluationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Single Spectral Optical Path Design of the Thermophotovoltaic System for Improving Irradiance Intensity and Uniformity

Liu

Chen

et al. 2022

Energy Tech

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“…Finally, for what regards the EER of the absorption chiller (see HY-S-AC strategy in Figure 9), a constant value equal to 0.67 was considered [51]. A cylindrical insulated tank has been considered as thermal storage device, assuming a global heat exchange coefficient equal to 0.5 W/m 2 K [52]. As previously mentioned, the choice of the optimal volume of the tank is a result of the developed analysis.…”

Section: Energy Systems Off-design Operation and Other Assumptionsmentioning

confidence: 99%

Efficiency improvement on a cruise ship: Load allocation optimization

Ancona¹,

Baldi

Bianchi³

et al. 2018

Energy Conversion and Management

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Last years have been characterized by a worldwide increasing attention towards the reduction of fuel consumption and carbon dioxide emissions. Several industrial fields, as well as the civil and residential sector, have introduced innovative approaches for the design and the operation of energy systems. These actions are aimed to reach higher values of energy conversion efficiency, also including an increase in the use of renewable resources. In this context, especially in the sector of cruise ships, further efforts are required to improve the energy efficiency of the employed energy systems. The aim of this paper is to propose an optimization framework based on genetic algorithms in order to maximize the energy efficiency and minimize both the fuel consumption and the thermal energy dissipation, by optimizing the load allocation of the ship energy systems. To this purpose, different strategies for the energy systems on board of an existing cruise ship are proposed and analyzed. In particular, two main engines configurations have been defined: standard (current logic of operation maintained) and hybrid configuration. For each proposed strategybeing the ship a particular and interesting application of isolated energy grid (i.e. a grid without connections with electric and fuel national grids)an in-house-developed software has been adapted and applied to optimize the load allocation of the various energy systems. Furthermore, an economic and environmental analysis has been carried out, in order to point out the benefitsor the eventual limitsrelated to the proposed solutions. The considered approach is based on the concept of introducing economically and structurally suitable modifications to the current cruise energy systems configuration, in order to reach the goal of increasing the energy efficiency. The carried out analysis shows that the hybrid strategies allow to reach the best results in terms of energy (fuel consumption and heat dissipation reduction), economic and environmental points of view.

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“…The experimental results demonstrated the validity of the proposed control scheme over a stand-alone real photovoltaic system. In paper [36], a new photovoltaic solar concentrator model based on non-imaging optics and embedding high efficiency multi-junctions cells was presented. The concentrator has been optimized to maximize the electricity production but it is thought to work in cogeneration to allow also for thermal energy by recovering the residual heat.…”

Section: Renewable Energymentioning

confidence: 99%