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Dry steam cycle application for excess steam utilization: Kamojang geothermal power plant case study
Prananto L.A.a, Juangsa F.B.a, Iqbal R.M.b, Aziz M.a, Soelaiman T.A.F.b
a Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology, Tokyo, Japan
b Department of Mechanical Engineering, Institut Teknologi Bandung, Bandung, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2017 Elsevier LtdThis study investigated the utilization of available excess steam by the Kamojang geothermal power plant, which, owing to the vapor-domination of the steam, utilizes a dry steam cycle. A model of the system was validated against actual Kamojang Unit-2 data and found to produce accurate results within a low discrepancy level (<5% error). The modeled performance of the proposed system was obtained through optimization of the non-condensable gases (NCGs) gas removal system (GRS) based on heat balance calculations and assuming content of NCGs in the working fluid based on real operational data. To optimize the model, five GRS configurations were investigated: one-stage steam ejector, two-stage steam ejector, one-stage liquid ring vacuum pump (LRVP), two-stage LRVP, and hybrid system (ejector plus LRVP). To set constraints on the optimization, the allowable condenser pressure was defined based on the cooling water temperature and the maximum temperature difference. Under the best design configuration (a one-stage LRVP), the proposed plant generated a gross electric power of 15.9 MW with a parasitic power consumption of 755.2 kW. The proposed system to convert unused discharge steam into electricity suggests that its installation will result in an increase of the Kamojang geothermal power plant capacity.[/vc_column_text][vc_empty_space][vc_separator css=".vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}"][vc_empty_space][megatron_heading title="Author keywords" size="size-sm" text_align="text-left"][vc_column_text]Cooling water temperature,Design configurations,Dry steam,Heat balance calculations,Kamojang,Maximum temperature differences,Parasitic power consumption,Steam jet ejectors[/vc_column_text][vc_empty_space][vc_separator css=".vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}"][vc_empty_space][megatron_heading title="Indexed keywords" size="size-sm" text_align="text-left"][vc_column_text]Dry steam cycle,Geothermal power plant,Kamojang,Liquid ring vacuum pump,Steam jet ejector[/vc_column_text][vc_empty_space][vc_separator css=".vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}"][vc_empty_space][megatron_heading title="Funding details" size="size-sm" text_align="text-left"][vc_column_text]The authors would like to express their deep thanks to Indonesia Power Ltd. for the assistance in providing some data required in this study. This study is supported by the Indonesia Endowment Fund for Education (LPDP).[/vc_column_text][vc_empty_space][vc_separator css=".vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}"][vc_empty_space][megatron_heading title="DOI" size="size-sm" text_align="text-left"][vc_column_text]https://doi.org/10.1016/j.renene.2017.10.029[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]