A bibliometric analysis of the application of solar energy to the organic Rankine cycle

Permana, Diki Ismail; Rusirawan, Dani; Farkas, I.

doi:10.1016/j.heliyon.2022.e09220

Cited by 20 publications

(14 citation statements)

References 81 publications

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“…The heat sources can be categorized into three classes depending upon the temperature range: low, medium, and high. 20 The geothermal heat source temperature (low temperature) can range between 353 and 423 K. 35 Moreover, for solar collectors and waste heat recovery (WHR) (medium or high heat source temperature), it can be up to 700 K. [36][37][38][39] The heat sink can be an air cooler or water with a temperature range 283-298 K. 40,41 In the current study, the cycle modeling assumptions are summarized in Table 1. Namely, maximal and minimal temperature, typical efficiencies for the expander and pump, mass flow, and temperature increments were assumed.…”

Section: Design Assumptionsmentioning

confidence: 99%

Assessment of the thermal efficiency of subcritical power generation cycles using environmentally friendly fluids at various heat source temperatures

Ahmed

2022

Energy Science & Engineering

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This study aims to investigate the effect of the various heat source temperature (T max ) on thermal efficiency (η th ) for the organic rankine cycle (ORC), trilateral flash cycle (TFC), and partial evaporator (PE-ORC). For this purpose, HFE7000, HFE7100, and HFE7500 were used as working fluids (WFs). The results indicate that by using HFE7000, the maximum η th was obtained for all used power cycles and temperature ranges. Compared to HFE7100, HFE7500 has higher η th at TFC, and PE-ORC at low T max , while HFE7100 has the maximum value at high T max . The η th at T max = 353 K for TFC were 8.71%, 8.34%, and 8.59%, while for ORC 12.38%, 11.82%, and 11.71% for HFE7000, HFE7100, and HFE7500, respectively. At T max = 423 K for TFC were 17.65%, 16.26%, and 16.52%, while for ORC were 18.56%, 17.38%, and 16.59% for HFE7000, HFE7100, and HFE7500, respectively. The η th results indicate that the maximum improvement at TFC by using HFE7000, and the minimum was at HFE7100, while for ORC, the maximum was at HFE7000, and the minimum was at HFE7500. Therefore, the HFE7000 fluid behaves as normal dry fluids at any used temperature, while HFE7100 as normal dry WFs at low T max while behaving as very dry WFs at T max extremely close to its T cr . HFE7500 behaves as very dry working fluids. The η th intersections temperature was at T max = 425.2 K and T max = 455.9 K for HFE7500 and HFE7100, respectively. However, there is no η th intersection for HFE7000.

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Section: Design Assumptionsmentioning

confidence: 99%

Assessment of the thermal efficiency of subcritical power generation cycles using environmentally friendly fluids at various heat source temperatures

Ahmed

2022

Energy Science & Engineering

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“…Bahan bakar fosil ini tidak dapat diperbaharui dan efek pembakarannya berdampak buruk bagi lingkungan seperti pemanasan global dan hujan asam [1]. Kunci dalam mengurangi penggunaan bahan bakar fosil untuk menghasilkan listrik adalah penggunaan sumber energi terbarukan seperti panas matahari, sumber panas limbah industri, panas bumi dan biomassa [2]. Saat ini, energi terbarukan memainkan peran penting dalam ekonomi global karena keberlanjutan, keamanan, dan kebersihannya [3].…”

Section: Pendahuluanunclassified

“…Surya adalah sumber utama energi terbarukan yang menopang kehidupan di bumi. Sekitar 1.75 x 10 5 TW, seluruh energi matahari diterima oleh bumi secara terus menerus dan telah melemah dua kali oleh kedua atmosfer (penyerapan 16%, refleksi 6%) dan awan (penyerapan 3%, pantulan 20%) [2]. Solar daya biasanya dihasilkan dari dua metode.…”

Section: Pendahuluanunclassified

Pengatur Suhu Otomatis Pada Solar Water Heater Berbasis IoT

Rosiana

Abdurahman

Gunastuti

et al. 2022

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Humans in everyday life really need energy. Energy use is expected to be sustainable, safe and clean. Solar is a renewable energy source that sustains life on earth, it can be utilized through photovoltaic and solar thermal systems. Solar thermal systems that capture solar energy can be used directly for water heating purposes. So that an environmentally friendly water heater can be created. This water heater is a solar water heater. Another problem is that the temperature setting for hot water is still manual, causing waiting time and wasted energy when mixing water is not according to your wishes and needs. The solution requires an automatic temperature regulator is needed on a solar water heater. The DS18B20 temperature sensor is used to read the water temperature, the Wemos D1 R2 microcontroller will consider whether the temperature read is appropriate or not according to the user wishes. If it is not suitable, it will instruct the relay to be active and turn on the water pump to circulate water to the heating collector. Setting the desired temperature can be done remotely using Internet of Things technology. From the results of testing the tool, the solar water heater that has been made is capable of providing hot water temperatures of 50.25 °C, 46°C, 43.12 °C when the tank contains 10 liters, 20 liters and 30 liters of water. The set point setting was successfully done using the blynk platform

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“…However, it uses hydrocarbons/refrigerants with a lower boiling point than water, so using ORC from various sources is possible. These include heat sources from geothermal waste heat, [4][5][6] biomass and biogas, 7,8 and industrial or power plants flue gas.…”

Section: Introductionmentioning

confidence: 99%

The theoretical approach of the solar organic Rankine cycle integrated with phase change material for the Hungarian region

Permana,

Rusirawan,

Farkas

2023

Energy Science & Engineering

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Hungary is not only dependent on imports of natural gas and fossil fuels, but Hungary is also the lowest in renewable energy utilization; otherwise, only 11.3% compared to other Central European countries in renewable energy utilization, above 13%. The percentage of renewables in power generation quadrupled from 8% to 16% between 2010 and 2020, with most of the gains coming from the rapid expansion of solar energy, particularly after 2016. Regarding solar energy resource potential, Hungary has a daily total of around 3.2–3.6 kWh/m2 and a yearly total of about 1168–1314 kW.h/m2. This makes it a suitable location for putting solar thermal collectors in conjunction with an organic Rankine cycle (ORC) system. In this study, the authors analyzed solar thermal as a heat source to generate electricity with ORC using two types of working fluids (R245fa and R123). Hungary's weather data for a whole year is used as primary data to look for solar radiation characteristics and ambient temperature. Based on the general solar collector equation, the parabolic tube collector was selected as the best solar collector to utilize solar radiation by producing a maximum heat of around 654.68 kW. Therefore, the evacuated flat plate collector was selected as the solar collector that can produce the maximum outlet temperature of around 372.15 K with a similar size aperture area. Producing a temperature output from the solar collector for heat transfer in the ORC system and from the performance showed that R245fa resulted in better Wnet performance compared with R123 with values of 45.82 and 28.17 kW, respectively, under the same solar collector. Meanwhile, the material suitable for the thermal energy storage‐evaporator combination is organic phase change material using N‐Octacosane, which in the same temperature range (350–375 K) has the smallest ζ(T) value (1.08–1.103), so the mass required for the system is very efficient.

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A bibliometric analysis of the application of solar energy to the organic Rankine cycle

Cited by 20 publications

References 81 publications

Assessment of the thermal efficiency of subcritical power generation cycles using environmentally friendly fluids at various heat source temperatures

Assessment of the thermal efficiency of subcritical power generation cycles using environmentally friendly fluids at various heat source temperatures

Pengatur Suhu Otomatis Pada Solar Water Heater Berbasis IoT

The theoretical approach of the solar organic Rankine cycle integrated with phase change material for the Hungarian region

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