Final Environmental Assessment and Finding of No Significant Impact: Small-Scale Geothermal Power Plant and Direct-Use Geothermal Application at AmeriCulture Inc., Cotton City, NM

2002 ◽  
Author(s):  
N
Keyword(s):  
Power Plant ◽  
Environmental Assessment ◽  
Small Scale ◽  
Geothermal Power Plant ◽  
Geothermal Power ◽  
Direct Use

scholarly journals Testing of Early Stage of BPPT-3MW Condensing Type Small Scale Geothermal Power Plant – Kamojang - Indonesia

2019 ◽  
Vol 1376 ◽  
pp. 012014
Author(s):  
Bambang Teguh Prasetyo ◽  
Suyanto ◽  
MAM Oktaufik ◽  
Himawan Sutriyanto
Keyword(s):  
Power Plant ◽  
Early Stage ◽  
Small Scale ◽  
Geothermal Power Plant ◽  
Geothermal Power

Economic and environmental assessment using emergy of a geothermal power plant

2021 ◽  
Vol 228 ◽  
pp. 113666
Author(s):  
Mohammad Jalili ◽  
Ata Chitsaz ◽  
Mehran Hashemian ◽  
Marc A. Rosen
Keyword(s):  
Power Plant ◽  
Environmental Assessment ◽  
Geothermal Power Plant ◽  
Geothermal Power

scholarly journals Kajian Terbentuknya Scaling pada Komponen Turbin Uap Pembangkit Listrik Tenaga Panas Bumi Skala Kecil

2019 ◽  
Vol 20 (1) ◽  
pp. 29
Author(s):  
Amiral Aziz ◽  
Kornelis K Ola
Keyword(s):  
Power Plant ◽  
Steam Turbine ◽  
Flow Rate ◽  
Steam Flow ◽  
Small Scale ◽  
X Ray Diffraction ◽  
Geothermal Power Plant ◽  
X Ray ◽  
Steam Flow Rate ◽  
Geothermal Power

ABSTRACTScaling and corrosion are two major problems in operation of the Small Scale Geothermal Power Plant. This paper discusses some results of the study that was conducted to assess the scaling formation in the Kamojang 3 MW Small Scale Geothermal Power Plant. The result of the study concluded that scaling occurred on the nozzle and steam turbine blade where the main minerals contained in sample A (solid) are Tridymate (SiO2), Pyrite (FeS2) and Chlorite (ClO2). While in sample B (sand) where the main mineral contained in the sample is Tridymate (SiO2), Pyrite (FeS2), Plagioclase (Na,Ca)(Si, Al)4O8 and Chlorite (ClO2). The analysis of this scaling was done by XRD (X-Ray Diffraction) method.  Scaling of the nozzle of the steam turbine causes the steam flow rate to decrease, thus lowering the power that the Small-Scale Geothermal Power Plant generates because the power generated by the Small-Scale Geothermal Power Plant is directly a function of the steam flow rate and the enthalpy difference between the inlet side and the outlet side of the turbine. However, scaling does not occur on the exit side of the wellhead KMJ 68 because the concentration of silica is very small that is 0.05 ppm at geothermal steam temperature 200.5°C.Keywords: geothermal steam, scaling, corrosion, Small Scale Geothermal Power Plant ABSTRAKScaling dan korosi merupakan dua masalah yang sangat serius ditemukan pada pengoperasian PLTP Skala Kecil. Tulisan ini membahas sebagian hasil studi yang dilakukan untuk mengkaji pembentukan scaling pada PLTP Skala Kecil Kamojang 3 MW dan pengaruhnya pada daya listrik yang dihasilkan oleh PLTP Skala Kecil. Dari hasil kajian dapat disimpulkan bahwa scaling terjadi pada Nozzle dan sudu-sudu turbin dimana mineral utama yang terdapat didalam sampel A (berupa endapan/padat) adalah Tridymate (SiO2), Pyrite (FeS2) dan Chlorite (ClO2). Sedangkan pada sampel B (endapan lepas/pasiran) dimana mineral utama yang terdapat didalam sampel adalah Tridymate (SiO2), Pyrite (FeS2), Plagioclase (Na,Ca)(Si,Al)4O8 dan Chlorite (ClO2). Analisis scaling ini dilakukan dengan menggunakan metoda XRD.(X-Ray Diffraction). Scaling yang terjadi pada bagian nozzle dari turbin uap menyebabkan laju aliran uap berkurang sehingga menurunkan daya yang dihasllkan PLTP Skala Kecil karena daya yang dihasilkan PLTP Skala Kecil secara langsung merupakan fungsi dari laju aliran uap dan perbedaan entalpi antara sisi masuk dan sisi keluar dari turbin. Akan tetapi, tidak terjadi scaling pada sisi keluar kepala sumur KMJ 68 karena kosentrasi silika sangat kecil yaitu sebesar 0,05 ppm pada temperatur uap panas bumi 200,5oC .Kata kunci : uap panas bumi, scaling, korosi, PLTP Skala Kecil, 

scholarly journals LCA and Exergo-Environmental Evaluation of a Combined Heat and Power Double-Flash Geothermal Power Plant

2021 ◽  
Vol 13 (4) ◽  
pp. 1935
Author(s):  
Vitantonio Colucci ◽  
Giampaolo Manfrida ◽  
Barbara Mendecka ◽  
Lorenzo Talluri ◽  
Claudio Zuffi
Keyword(s):  
Life Cycle ◽  
Power Plant ◽  
Environmental Analysis ◽  
Combined Heat And Power ◽  
Hot Water ◽  
Environmental Cost ◽  
Published Data ◽  
Geothermal Power Plant ◽  
Geothermal Power ◽  
Double Flash

This study deals with the life cycle assessment (LCA) and an exergo-environmental analysis (EEvA) of the geothermal Power Plant of Hellisheiði (Iceland), a combined heat and power double flash plant, with an installed power of 303.3 MW for electricity and 133 MW for hot water. LCA approach is used to evaluate and analyse the environmental performance at the power plant global level. A more in-depth study is developed, at the power plant components level, through EEvA. The analysis employs existing published data with a realignment of the inventory to the latest data resource and compares the life cycle impacts of three methods (ILCD 2011 Midpoint, ReCiPe 2016 Midpoint-Endpoint, and CML-IA Baseline) for two different scenarios. In scenario 1, any emission abatement system is considered. In scenario 2, re-injection of CO2 and H2S is accounted for. The analysis identifies some major hot spots for the environmental power plant impacts, like acidification, particulate matter formation, ecosystem, and human toxicity, mainly caused by some specific sources. Finally, an exergo-environmental analysis allows indicating the wells as significant contributors of the environmental impact rate associated with the construction, Operation & Maintenance, and end of life stages and the HP condenser as the component with the highest environmental cost rate.

scholarly journals Method for imitating magnesium silicate scale formed at the geothermal power plant in Obama Hot Spring, Japan

Geothermics ◽  
2021 ◽  
Vol 96 ◽  
pp. 102203
Author(s):  
Motoaki Morita ◽  
Ayumu Yamaguchi ◽  
Sota Koyama ◽  
Shinichi Motoda
Keyword(s):  
Power Plant ◽  
Hot Spring ◽  
Magnesium Silicate ◽  
Geothermal Power Plant ◽  
Geothermal Power
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