Modelling and performance analysis of directly coupled vapor compression solar refrigeration system

Salilih, Elias M.; Birhane, Yilma T.

doi:10.1016/j.solener.2019.08.017

Cited by 67 publications

(16 citation statements)

References 17 publications

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“…They verified that the cooking power of a solar concentric cooker with PCM is two times that of a solar concentric cooker without PCM. Salilih and Birhane (2019) proposed a method for analyzing a vapor compression refrigeration system under real-life situations using PV and compressor characteristics from the datasheets. Manokar et al (2018) experimentally investigated the performance of PV module-integrated solar still that generates power and desalinates water simultaneously.…”

Section: Introductionmentioning

confidence: 99%

An Experimental and Comparative Performance Evaluation of a Hybrid Photovoltaic-Thermoelectric System

Khan

Kazim

et al. 2021

Front. Energy Res.

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The majority of incident solar irradiance causes thermalization in photovoltaic (PV) cells, attenuating their efficiency. In order to use solar energy on a large scale and reduce carbon emissions, their efficiency must be enhanced. Effective thermal management can be utilized to generate additional electrical power while simultaneously improving photovoltaic efficiency. In this work, an experimental model of a hybrid photovoltaic-thermoelectric generation (PV-TEG) system is developed. Ten bismuth telluride-based thermoelectric modules are attached to the rear side of a 10 W polycrystalline silicon-based photovoltaic module in order to recover and transform waste thermal energy to usable electrical energy, ultimately cooling the PV cells. The experiment was then carried out for 10 days in Lahore, Pakistan, on both a simple PV module and a hybrid PV-TEG system. The findings revealed that a hybrid system has boosted PV module output power and conversion efficiency. The operating temperature of the PV module in the hybrid system is reduced by 5.5%, from 55°C to 52°C. Due to a drop in temperature and the addition of some recovered energy by thermoelectric modules, the total output power and conversion efficiency of the system increased. The hybrid system’s cumulative output power increased by 19% from 8.78 to 10.84 W, compared to the simple PV system. Also, the efficiency of the hybrid PV-TEG system increased from 11.6 to 14%, which is an increase of 17% overall. The results of this research could provide consideration for designing commercial hybrid PV-TEG systems.

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Section: Introductionmentioning

confidence: 99%

An Experimental and Comparative Performance Evaluation of a Hybrid Photovoltaic-Thermoelectric System

Khan

Kazim

et al. 2021

Front. Energy Res.

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“…This modeling helped to choose the suitable battery capacity that met the cooling load. Salilih and Birhane [ 85 ] developed a simulation method and modeled variable speed compressors directly coupled with PV panels. They collected the data from some PV and refrigeration manufacturers to design the required elements.…”

Section: Refrigeration Cycles Powered By Photovoltaicmentioning

confidence: 99%

Photovoltaic and Photovoltaic Thermal Technologies for Refrigeration Purposes: An Overview

Alsagri

2022

Arab J Sci Eng

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Refrigeration systems have a broad range of applications, playing a critical role in human life. Especially, vaccine preservation in rural regions has become more critical than in the past during the COVID19 era. In this sense, meeting the cooling process's energy need with renewable energy is critical, as the grid cannot support it. Thus, solar energy has been extensively studied for use in refrigeration cycles. Compression, absorption, adsorption, desiccant, and ejector refrigeration cycles are frequently used in this configuration. This article discusses multiple studies showing various attributes' impact on a system's overall efficiency. Most previous reviews did not cover PV with refrigeration cycles. So, this paper surveys the literature on PV-powered cooling cycles. For better classification, PV technologies are categorized into three types: PV, PVT, and CPVT. With this regard, CPVTs still have a way to progress due to a lack of studies compared to PV. The works are divided into three main sections as Exergy Studies, Experimental Studies, and Simulation and Numerical Studies. This review paper categorizes and rates refrigeration-assisted solar systems based on exergy destruction, exergy efficiency, and COP of cooling cycles. The results showed that PV panels have the highest exergy destruction in most of the systems. It is concluded that using PV technologies has a great potential to supply cooling demand, especially in a hot climate condition. Moreover, the study's findings are anticipated to aid designers in scaling up photovoltaic-based cooling systems, resulting in more efficient and sustainable designs.

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“…Axaopoulos and Theodoridis [33] successfully presented an autonomous battery-less solar-powered ice maker. Salilih et al [36] performed an analysis and simulation of solar PV-driven VCRS in a real weather condition without battery storage. National Renewable Energy Laboratory (NREL) projects the energy storage cost in using Li-ion battery at a utility-scale solar PV is about 80% of the total cost of a PV installation [37].…”

Section: Relevant Workmentioning

confidence: 99%

Techno-Economic Trade-Off between Battery Storage and Ice Thermal Energy Storage for Application in Renewable Mine Cooling System

et al. 2020

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This paper performs a techno-economic assessment in deploying solar photovoltaics to provide energy to a refrigeration machine for a remote underground mine. As shallow deposits are rapidly depleting, underground mines are growing deeper to reach resources situated at greater depths. This creates an immense challenge in air-conditioning as the heat emissions to mine ambient increases substantially as mines reach to deeper levels. A system-level design analysis is performed to couple PV with a refrigeration plant capable of generating 200 tonne of ice per day to help to mitigate this issue. Generated ice can directly be used in cooling deep underground mines via different types of direct heat exchangers. State-of-the-art technology is used in developing the model which aims to decrease the size and cost of a conventional refrigeration system run on a diesel generator. Costs associated with deploying a solar system are computed as per the recent market value. Energy savings, carbon emissions reduction, and net annual savings in employing the system are quantified and compared to a diesel-only scenario. In addition, two different energy storage strategies: an ice storage system and a battery storage system, are compared. A detailed economic analysis is performed over the life of the project to obtain the net cash flow diagram, payback period, and cumulative savings for both systems. Moreover, a sensitivity analysis is proposed to highlight the effect of solar intensity on solar system size and the area required for installment. The study suggests that the use of solar PV in mine refrigeration applications is technically feasible and economically viable depending on the sun-peak hours of the mine location. Additionally, the economics of deploying an ice storage system compared to the battery storage system has a better payback period and more cumulative savings.

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Modelling and performance analysis of directly coupled vapor compression solar refrigeration system

Cited by 67 publications

References 17 publications

An Experimental and Comparative Performance Evaluation of a Hybrid Photovoltaic-Thermoelectric System

An Experimental and Comparative Performance Evaluation of a Hybrid Photovoltaic-Thermoelectric System

Photovoltaic and Photovoltaic Thermal Technologies for Refrigeration Purposes: An Overview

Techno-Economic Trade-Off between Battery Storage and Ice Thermal Energy Storage for Application in Renewable Mine Cooling System

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