The Electricity Power Potency Estimation from Hot Spring in Indonesia with Temperature 70-80°C Using Organic Rankine Cycle

Pikra, Ghalya; Rohmah, Nur; Pramana, Rakhmad Indra; Purwanto, Andri Joko

doi:10.1016/j.egypro.2015.03.227

Cited by 8 publications

(4 citation statements)

References 9 publications

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“…To do so, several considerations are assumed as illustrated in sections 4.1-4.7. R227ea as a non-flammable and non-toxic organic fluid refrigerant is suitable for low pressure, lowtemperature applications with high efficiency [42][43][44][45][46], especially when the hot source temperature is lower than 92 °C [47,48]. Since changes of the entropy with the temperature in R227ea is positive, it is known as dry organic fluid; hence, this organic fluid does not need the superheat before its expansion process in ORC [48] while R227ea is selected for the low-temperature ORC system.…”

Section: Sizing the Orc Systemmentioning

confidence: 99%

Guideline for electricity generation from hot springs (natural energy storage systems): A techno-enviro-economic assessment

Ghoddousi

Rezaie

Ghandehariun

2021

Sustainable Energy Technologies and Assessments

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The scattered hot springs on the globe are natural thermal energy storages that are available for industrial and recreational advantages. A hot spring is a hydrothermal system that can be used for power generation purposes as well as deep-well geothermal plants. In the present study, a techno-enviro-economic study is conducted to determine the power generation potential of hot springs as a heat source of the Organic Rankine Cycle (ORC). The hot water temperature and discharge mass flow rate from hot springs varies from 60 to 90 ᵒC and 5 to 50 kg/s, respectively. The ORC plant is modeled by Aspen Plus V9. The impacts of the temperature and mass flow rate of discharge from hot springs on the thermodynamics and economics of the plants are investigated. The results indicate that increasing the hot spring temperature and discharge mass flow rate improves the thermal efficiency and power generation capacity of ORC plant while Payback Period (PP), Levelized Energy Cost (LEC), and Specific Investment Cost (SIC) shrink. The power generation capacity varies from 9.3 kW to 303 kW and the LEC range is from 0.03 $/kWh to 0.13 $/kWh based on the hot spring and water discharge mass flow rate.

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Section: Sizing the Orc Systemmentioning

confidence: 99%

Guideline for electricity generation from hot springs (natural energy storage systems): A techno-enviro-economic assessment

Ghoddousi

Rezaie

Ghandehariun

2021

Sustainable Energy Technologies and Assessments

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“…ORC merupakan sebuah sistem yang dapat bekerja pada temperatur rendah. Oleh karena itu, sistem ini cocok digunakan untuk menghasilkan listrik dengan menggunakan air panas di bawah temperatur 100°C (Pikra et al, 2015;Wang et al, 2013). Pemanasan fluida kerja menggunakan solar kolektor merupakan salah sumber termal dengan hasil temperatur yang tidak begitu tinggi.…”

Section: Pendahuluanunclassified

Desain Dan Uji Eksperimental Evaporator Pada Organic Rankine Cycle

Sobar

Gaos

Alkindi

2019

AME

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<p>Penelitian desain dan uji eksperimental evaporator pada organic rankine cycle telah dilakukan. Metode uji dilakukan berdasarkan pada perpindahan panas yang terjadi pada evaporator sistem ORC. Material tube yang digunakan adalah SA 304 dengan diameter luar tube 10mm, diameter dalam tube 7,11mm, panjang tube 1000 mm, jumlah tube 158 dengan susunan tube segi tiga, pitch tube 13 mm, dan diameter shell 200 mm, jumlah baffle 4. Dari hasil perhitungan yang dilakukan diperoleh perpindahan panas hasil pengujian sebesar 1,07 kW sedangkan perpindahan panas hasil desain sebesar 5,05 kW atau baru tercapai 21,19% perpindahan dari desain. </p>

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“…Indonesia is a country with more than 200 volcanoes which are located along Sumatra, Java, Bali, and the eastern islands of the country with an expected potential of about 28 GWe composed of 312 geothermal potential locations, but the utilization of this geothermal energy is still low [11,12]. Mostly, geothermal energy (GE) in Indonesia are characterized as low enthalpy geothermal and have shallow depth such as hot spring which is utilized for bathhouse, cooking, building heating, and agricultural drying [13][14][15]. Therefore, GE as a renewable energy can be used in drying processes as a heat source replacing the high energy costs of fossil fuels [16].…”

Section: Introductionmentioning

confidence: 99%

Utilization the Heat Pipe Heat Exchanger Techniques at Low Enthalpy Geothermal Energy to Coffee Drying Process

Hakim

Putra

Margono

et al. 2020

ARFMTS

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Coffee is one of Indonesia's main commodity which competes in international market. However, Indonesia's coffee production still faces some problems. One of the main problems is for the drying process. Moisture contents of coffee need to be reduced to 12%. All this time, most coffee producers use conventional method by using heat source from sunlight. However, uncertain weathers become one of the factors which slows down the drying process. Therefore, the purpose of this research is to find and utilize an alternative energy to solve the drying process problem. One of energy sources which is possible to be used for those criteria is geothermal energy especially with low enthalpy that usually is used for daily activities such as bathing, cooking, and warming houses. In this research, Heat Pipe Heat Exchanger (HPHE) which consists of 42 straight heat pipes with staggered configuration is used for utilizing geothermal energy. The heat pipe has a length of 700 mm OD 10 mm with filling ratio of 50% and added by 181 pcs of aluminum with dimension size of 76 x 345 x 0.105 mm as a fin. Geothermal fluid is simulated by water that heated by 9000 watt heater. Temperature of hot water with range of 50, 60, and 70˚C and air speed of 0.2, 0.4, 0.6 m/s are variations for the experiment. The result shows that the highest effectiveness of HPHE is 78.8% with the temperature of 70˚C and 0.2 m/s air speed while the lowest effectiveness is 68.8% with the temperature of 50˚C and 0.6 m/s air speed. Other than that, the drying process with the temperature of 70˚C and 0.6 m/s air speed is the fastest while the slowest is at 50˚C and air speed of 0.2 m/s. This result proves that increasing the temperature and air speed lead to the less time needed for the drying process.

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The Electricity Power Potency Estimation from Hot Spring in Indonesia with Temperature 70-80°C Using Organic Rankine Cycle

Cited by 8 publications

References 9 publications

Guideline for electricity generation from hot springs (natural energy storage systems): A techno-enviro-economic assessment

Guideline for electricity generation from hot springs (natural energy storage systems): A techno-enviro-economic assessment

Desain Dan Uji Eksperimental Evaporator Pada Organic Rankine Cycle

Utilization the Heat Pipe Heat Exchanger Techniques at Low Enthalpy Geothermal Energy to Coffee Drying Process

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