Effects of circumsolar radiation on the optimal performance of a Stirling heat engine coupled with a parabolic dish solar collector

Malali, Praveen; Chaturvedi, Sushil K.; Agarwala, Ranjeet

doi:10.1016/j.applthermaleng.2019.113961

Cited by 25 publications

(5 citation statements)

References 30 publications

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“…Despite that, observing Fig 4 it is seen that the overall behavior does resemble a cycle and working through the P-V diagram it is possible to create a mathematical representation of the real cycle [ 45 ]. To achieve that a cubic spline with 6 control points is fitted to the dots presented in Fig 5 , where the squared error is minimised, similarly to applications in [ 46 ]. Through this procedure the black line of Fig 5 is produced, which closely resembles the depictions of real Otto cycles in thermodynamics [ 47 , 48 ].…”

Section: Resultsmentioning

confidence: 99%

A possible thermodynamic definition and equation of state for a model of political election cycles

Domenikos,

Mantzaris

2024

PLoS ONE

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This work demonstrates how a simulation of political discourse can be formulated using variables of the agents’ behaviors in a simulation, as thermodynamic variables. With these relations the methodology provides an approach to create a correspondence between the variables of an agent based social system and those of a thermodynamic system. Extended from this observation, diagrams akin to a P-V diagram for gases can be created for this social system. The basic thermodynamic variables of temperature, pressure and volume are defined from a system of agents with political and non-political actions engaged in simulated political discourse. An equation of state is defined for the simulated political phenomenon. Through this equation of state the full thermodynamic map of the system is presented under a P-V diagram with isothermal and isentropic lines, which is able to represent the political situation of the system at each point of time. The classic election cycle that takes place can be represented on this thermodynamic map (corresponding to an Otto cycle). This provides a possibility for researching macroscopic social cycles as a thermodynamic/informational cycle as the traces on the thermodynamic map show similarities to an Otto cycle. Such a formulation reinforces the endeavours of social physics to view social phenomena with physical principles.

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Section: Resultsmentioning

confidence: 99%

A possible thermodynamic definition and equation of state for a model of political election cycles

Domenikos,

Mantzaris

2024

PLoS ONE

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“…Additionally, Subramani et al [ 150 ] analyzed PDR using a conical cavity receiver, where the results showed the maximum collector efficiency is 77.3% for a mass flow rate of 0.0089 kg s −1 . Malali et al [ 151 ] investigated the effect of circumsolar radiation on the optimal performance of the PDR, and Alnaqi et al [ 152 ] conducted a numerical investigation of the PDR hydrothermal efficiency with a hybrid nanofluid fluid.…”

Section: Swh Specifications and Characteristicsmentioning

confidence: 99%

Review on the Progress of Solar Water Heaters and Their Future Perspectives

2023

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A solar water heater (SWH) converts solar radiation into thermal energy for various purposes, and its technology has experienced numerous developments. Many studies have focused on developing, optimizing, and analyzing the technological configurations of SWH to improve its thermal efficiency, but they rarely achieve 80% efficiency. This review aims to provide a broad overview of SWH, including the energetic and exergetic approaches and analyses, technological development, and examines advantages, disadvantages, and further developments. Various collectors of the SWH and related studies are also highlighted, and the results identify the technical and policy challenges of the implementation. Suggested potential solutions to these challenges are presented with further directions. Furthermore, this study also discusses the limitations of the current SWH technology by presenting the specifications and characteristics. It also presents the mathematical equation model often used, the technology potential, and the results of the latest studies and developments regarding SWH technology. The prospects for further development of the most promising SWH should be analyzed.

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“…The thermal efficiency was calculated using PTC's heat performance and the five criteria of this model. The efficiency of a PT solar collector was investigated on an annual basis [21]. Three separate solar tracking systems in different climate zones of China were used to build a transient heat transfer model that simulated the dynamic behaviour of a PTC device.…”

Section: Introductionmentioning

confidence: 99%

Optimizing Thermal Performance in Parabolic Trough Solar Power Systems: An Experimental Design and Analysis

et al. 2024

E3S Web of Conf.

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The efficiency of a Parabolic Trough (PT) Solar Power Plant heavily relies on its thermal performance. Modern technology has allowed for the creation of more efficient methods of producing steam and of collecting solar energy for thermal power generation. Ministry of New & Renewable Energy (MNRE) built and tested an 11.1 m2 parabolic trough concentrator (PTC). A system that generates steam indirectly by using concentrating solar power (CSP) is examined. The study examined absorbers' thermal properties, thermal efficiency of combined thermal exchangers, concentration ratio, heat efficiency, and steam generation to determine their influence on energy efficiency. The experimental findings display that 557.85 watts of energy are absorbed by the PTC receiver. The PT solar plant system has a thermal energy efficiency of 25 to 29 % and a concentration factor of about 200 on average. The parabolic trough concentrator generates a maximum of 9.1 kg.h-1 of steam.

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Effects of circumsolar radiation on the optimal performance of a Stirling heat engine coupled with a parabolic dish solar collector

Cited by 25 publications

References 30 publications

A possible thermodynamic definition and equation of state for a model of political election cycles

A possible thermodynamic definition and equation of state for a model of political election cycles

Review on the Progress of Solar Water Heaters and Their Future Perspectives

Optimizing Thermal Performance in Parabolic Trough Solar Power Systems: An Experimental Design and Analysis

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