Investigation of phosphoric acid fuel cell, linear Fresnel solar reflector and Organic Rankine Cycle polygeneration energy system in different climatic conditions

Sun, Qizhen; Lin, Deli; Khayatnezhad, Majid; Taghavi, Mohammad

doi:10.1016/j.psep.2021.01.035

Cited by 93 publications

(25 citation statements)

References 52 publications

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“…Recently, many works has been done on dish solar systems to achieve acceptable efficiency, low production costs and high temperature levels, 17 as well as extension systems of bottoming cycles 18 . On the other hand, most recently, more attention has been paid to one of the applications of the PDC that drives the unit of Stirling engine‐generator 19 . A PDC‐Stirling system generates electrical and/or mechanical power.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of a new combined energy system includes parabolic dish solar collector, Stirling engine and thermoelectric device

et al. 2021

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Summary According to new findings, the use of clean energy sources such as solar energy to supply energy (both electricity and heat) to human societies is essential. On the other hand, choosing the appropriate technology to convert solar energy into useful energy in the form of individual or combined systems is a fundamental issue. Individual solar energy systems have inherently low performance. However, their use in hybrid energy systems with other energy generation devices is key solution and shows high performance. The present work provides the performance of a new combined energy system composed of the parabolic dish solar collector (PDC), Stirling engine (SE) and thermoelectric device (TD) under various parameters. Sun is the main source of energy in this system, where, sunlight is focused on the PDC focal point by the parabolic shaped mirrors. Thus, the useful thermal power is produced by PDC and then feeds to the SE. The operating fluid of the engine is heated by this heat and converted into mechanical energy. Then, the mechanical energy is converted into electricity by a generator connected to the SE and the excess heat is lost from the engine. The exhaust of the SE transferred to the TEG hot end and produces further electricity. In addition, the TEC module absorbs the cooled environment heat and produces cooling energy (by consuming electricity from the TEG). Therefore, the proposed combined process provides the electricity, heat and cooling. The paper is based on the following three scenarios: (1) the system performance is evaluated under constant climatic conditions, (2) climate data from five various cities in Europe and Asia are used for system operation and (3) this scenario presents the general comparison between the two different hybrid energy systems driven by PDC and linear Fresnel reflector (LFR). In addition, multi‐objective optimization is provided to obtain the optimal performance of the developed hybrid system. The optimization results showed that, the optimum total output electricity and overall efficiency were 26.21 kW and 39.17%, respectively. It was also found that, average daily useful power generated by PDC in Moscow on 14‐June is 373.97 W/m2, which is about 11.1%, 1.55%, 33.3% and 14.23% more than Tehran, Beijing, Geneva and Kiev, respectively. Furthermore, increasing the temperature of PDC absorber improves the performance of SE and TD and subsequently improves the overall operation. Also, in terms of the PDC numbers, the system in the cities of Tehran, Beijing and Moscow has a better justification compared to the other two cities (Geneva and Kiev).

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Section: Introductionmentioning

confidence: 99%

Numerical investigation of a new combined energy system includes parabolic dish solar collector, Stirling engine and thermoelectric device

et al. 2021

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“…Climate change is the variation in the average long-term values of a climatic and statistical parameter, which here the average is taken at certain intervals, for example in some decades (Zhang et al 2019a(Zhang et al , 2019bSun et al 2021). Climate change is one of the global challenges that, with its long-term adverse effects, is slowing down the process of achieving sustainable development around the world.…”

Section: Introductionmentioning

confidence: 99%

Evaluating the climate change effects on temperature, precipitation and evapotranspiration in eastern Iran using CMPI5

2021

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In this study, the trend of climate changes during a future period from 2020 to 2039 has been evaluated using the data of the Fifth Climate Change Report under two emission scenarios RCP 4.5 and RCP 8.5 for Neishabour plain, Iran. Eleven models such as CESM, EC EARTH, HADGEM, MPI, NORESM, CANESM, CSIROM, GFDLCM2, GISS E2, IPSL and MIROC ESM have been used to evaluate changes in minimum and maximum temperatures, precipitation, and evapotranspiration. The results showed that GFDLCM2, MPI and IPSL models were more accurate in terms of precipitation and GISS E2 and GFDLCM2 models were the suitable option for predicting the maximum and minimum temperatures and evapotranspiration. Considering the evaluated parameters, minimum temperature, maximum temperature and evapotranspiration had approximately the constant trends and were accompanied by a slight increase and decrease for the next two decades, but for the precipitation, large fluctuations were predicted for the next period. Moreover, in the study years for the four parameters in all simulated models, the RCP 8.5 scenario has estimated a higher amount than the RCP 4.5 scenario.

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“…That system resulted in a reduction in LOEC of about 7.5%. Sun et al, 20 in a combined energy cycle composed of a fuel cell and a Stirling engine, was prepared the heat duty of the organic Rankine cycle by the heat generated of Fresnel. In addition, the fuel cell heat dissipation was supplied the engine duty.…”

Section: Introductionmentioning

confidence: 99%

Numerical evaluation of energy system based on Fresnel concentrating solar collector, Stirling engine, and thermoelectric generator with electrical energy storage

et al. 2021

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Summary The purpose of this paper is to present a conceptual study of energy cycle performance consisting of two subsystems of electricity generation and storage. The introduced cycle is based on a linear Fresnel reflector (LFR) technology with a Stirling engine and thermoelectric generator (TG) to generate electricity and pumped‐hydro‐compressed air (PHCA) technology to store energy. Solar energy is converted into thermal energy through parabolic mirrors of the Fresnel and heating the fluid inside the collector. The resulting heat energy provides the required heat duty of the engine. This heat enters the Stirling cycle as input heat, and the mechanical energy convert into electricity. In addition, TG is thermally connected to the engine exhaust to generate additional electric energy. Then, the energy produced from the power generation subsystem is stored by the energy storage subsystem. Although many works had been done on the integrating of various solar thermal collectors and intermediate and/or downstream cycles, efforts had not been created to develop research on the combination of LFR, Stirling engine, TG, and PHCA system. Results showed that the power generation subsystem could generate 1.46 kW of electricity. The share of Stirling engine and TG in electricity generation was 72.6% and 27.4%, respectively. In addition, the power generation and energy storage efficiencies were 39.52% and 63.75%, respectively. Two different cases are offered for the design of the Fresnel solar field based on the useful power obtained.

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Investigation of phosphoric acid fuel cell, linear Fresnel solar reflector and Organic Rankine Cycle polygeneration energy system in different climatic conditions

Cited by 93 publications

References 52 publications

Numerical investigation of a new combined energy system includes parabolic dish solar collector, Stirling engine and thermoelectric device

Numerical investigation of a new combined energy system includes parabolic dish solar collector, Stirling engine and thermoelectric device

Evaluating the climate change effects on temperature, precipitation and evapotranspiration in eastern Iran using CMPI5

Numerical evaluation of energy system based on Fresnel concentrating solar collector, Stirling engine, and thermoelectric generator with electrical energy storage

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