A Solar Energy Solution for Sustainable Third Generation Mobile Networks

Alsharif, Mohammed H.

doi:10.3390/en10040429

Cited by 20 publications

(14 citation statements)

References 26 publications

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“…The main reasons for this trend are the fossil fuel depletion, the climate change, the increasing price of electricity and the increasing energy demand [2][3][4]. The use of renewable and sustainable energy sources, as solar energy, wind energy, geothermal energy, and biomass as well as the waste heat utilization are the main ways for facing the energy problems.…”

Section: Introductionmentioning

confidence: 99%

Optimization of a Solar-Driven Trigeneration System with Nanofluid-Based Parabolic Trough Collectors

Bellos

Tzivanidis

2017

Energies

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Abstract:The objective of this work was to optimize and to evaluate a solar-driven trigeneration system which operates with nanofluid-based parabolic trough collectors. The trigeneration system includes an organic Rankine cycle (ORC) and an absorption heat pump operating with LiBr-H 2 O which is powered by the rejected heat of the ORC. Toluene, n-octane, Octamethyltrisiloxane (MDM) and cyclohexane are the examined working fluids in the ORC. The use of CuO and Al 2 O 3 nanoparticles in the Syltherm 800 (base fluid) is investigated in the solar field loop. The analysis is performed with Engineering Equation Solver (EES) under steady state conditions in order to give the emphasis in the exergetic optimization of the system. Except for the different working fluid investigation, the system is optimized by examining three basic operating parameters in all the cases. The pressure in the turbine inlet, the temperature in the ORC condenser and the nanofluid concentration are the optimization variables. According to the final results, the combination of toluene in the ORC with the CuO nanofluid is the optimum choice. The global maximum exergetic efficiency is 24.66% with pressure ratio is equal to 0.7605, heat rejection temperature 113.7 • C and CuO concentration 4.35%.

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Section: Introductionmentioning

confidence: 99%

Optimization of a Solar-Driven Trigeneration System with Nanofluid-Based Parabolic Trough Collectors

Bellos

Tzivanidis

2017

Energies

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“…Renewable natural resources such as solar radiation that enable the Korean government to achieve the vision of sustainable development and energy security as well as follow policies that combine energy, environment, economy, and society in aspect of solar energy are abundant available in South Korea [3]. Thus, the Korean government has sought to diversify its energy sources by increasing the dependence on renewable energy sources to enhance energy security and protect the environment [4,5]. The strategic vision of the energy sector in South Korea aims to increase the contribution of renewable energy to the total generated power.…”

Section: Motivations Of the Studymentioning

confidence: 99%

Time Series ARIMA Model for Prediction of Daily and Monthly Average Global Solar Radiation: The Case Study of Seoul, South Korea

2019

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Forecasting solar radiation has recently become the focus of numerous researchers due to the growing interest in green energy. This study aims to develop a seasonal auto-regressive integrated moving average (SARIMA) model to predict the daily and monthly solar radiation in Seoul, South Korea based on the hourly solar radiation data obtained from the Korean Meteorological Administration over 37 years (1981–2017). The goodness of fit of the model was tested against standardized residuals, the autocorrelation function, and the partial autocorrelation function for residuals. Then, model performance was compared with Monte Carlo simulations by using root mean square errors and coefficient of determination (R2) for evaluation. In addition, forecasting was conducted by using the best models with historical data on average monthly and daily solar radiation. The contributions of this study can be summarized as follows: (i) a time series SARIMA model is implemented to forecast the daily and monthly solar radiation of Seoul, South Korea in consideration of the accuracy, suitability, adequacy, and timeliness of the collected data; (ii) the reliability, accuracy, suitability, and performance of the model are investigated relative to those of established tests, standardized residual, autocorrelation function (ACF), and partial autocorrelation function (PACF), and the results are compared with those forecasted by the Monte Carlo method; and (iii) the trend of monthly solar radiation in Seoul for the coming years is analyzed and compared on the basis of the solar radiation data obtained from KMS over 37 years. The results indicate that (1,1,2) the ARIMA model can be used to represent daily solar radiation, while the seasonal ARIMA (4,1,1) of 12 lags for both auto-regressive and moving average parts can be used to represent monthly solar radiation. According to the findings, the expected average monthly solar radiation ranges from 176 to 377 Wh/m2.

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“…In addition, dust significantly influences the performance of PV, thereby causing further reduction in overall efficiency. Accordingly, the E of a PV system can be calculated using the following formula [8,18,19]:…”

Section: Pv Modelmentioning

confidence: 99%

Energy Optimization Strategies for Eco-Friendly Cellular Base Stations

Alsharif

Kim

2018

Energies

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This study focuses on the economic and environmental impacts of the deployment of cellular base stations (BSs) in remote/rural areas of South Korea. The optimal system, energy production, and operational costs of various renewable energy systems (RESs), such as solar power systems and hybrid solar power/wind power systems, in supplying third-generation cellular BSs with their required energy are discussed in this paper. To highlight the economic feasibility of the proposed RESs, a comparison between their economic feasibilities is presented. In addition, a comparison between the economic feasibilities of the proposed RESs and the classic energy solution of using a diesel generator (DG) is provided. Results show that the total operating expenses that can be saved can reach up to 56.13% if DG is replaced with the hybrid solar power/wind power system. Moreover, the operating expense savings are increased to 56.99% when a stand-alone solar power system is used. These results can be considered a valuable reference for mobile operators to show that shifting toward renewable energy technology is an attractive option.

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A Solar Energy Solution for Sustainable Third Generation Mobile Networks

Cited by 20 publications

References 26 publications

Optimization of a Solar-Driven Trigeneration System with Nanofluid-Based Parabolic Trough Collectors

Optimization of a Solar-Driven Trigeneration System with Nanofluid-Based Parabolic Trough Collectors

Time Series ARIMA Model for Prediction of Daily and Monthly Average Global Solar Radiation: The Case Study of Seoul, South Korea

Energy Optimization Strategies for Eco-Friendly Cellular Base Stations

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