Pangestu, Muhammad Nasution (2021) Analisis sistem Pendinginan Absorpsi pada Intake Udara PLTGU. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Performa turbin gas dapat bervariasi diakibatkan oleh banyak faktor. Salah satu faktor yang mempengaruhi performa turbin gas adalah temperatur udara lingkungan turbin gas. Salah satu cara untuk mendinginkan temperatur udara lingkungan turbin gas yaitu dengan menggunakan sistem pendinginan absorption chiller. Absorption chiller memanfaatkan sumber energi panas sebagai sebagai input daya utama sehingga sistem tidak memerlukan kompresor. Fluida kerja yang dipakai pada sistem pendinginan absorption chiller ini adalah campuran litium bromida dan air yang berfungsi masing-masing sebagai absorben dan refrigeran.
Pada penelitian ini dilakukan analisis secara termodinamika sistem pendinginan absorption chiller dengan binary working fluid single effect water/lithium bromide menggunakan bantuan Engineering Equation Solver dan Cycle Tempo. Engineering Equation Solver digunakan untuk menganalisis sistem pendinginan absorpsi dan Cycle Tempo digunakan untuk mengsimulasikan sistem pembangkit listrik tenaga gas. Dilakukan variasi temperatur kondenser dan temperatur flue gas dengan nilai variasi masing-masing 30;35;40;45;50 dan 101;103;105;107;109 dan variasi skema operasi pembebanan pada simulasi sistem pembangkit listrik tenaga gas dengan nilai variasi 224MW;323MW;383MW; 480MW. Dari penelitian ini diharapkan analisis yang dihasilkan dapat digunakan sebagai rekomendasi pendinginan pada intake udara PLTGU. Hasil analisis menunjukkan sistem pendinginan intake udara PLTGU memanfaatkan waste heat HRSG pada PLTGU UP IP Grati POMU menggunakan absorption chiller Kalt CHP 150. Sistem pendinginan berkapasitas 5272 kW dengan nilai COP sebesar 0,7357. Daya net turbin gas naik sebesar 8,07%.
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Gas turbine performance can vary due to many factors. One of the factors that affect the performance of a gas turbine is the ambient air temperature of the gas turbine. One way to cool the ambient air temperature gas turbine is by using a cooling system absorption chiller. The absorption chiller utilizes a heat energy source as the main power input so that the system does not require a compressor. The working fluid used in this cooling system absorption chiller is a mixture of lithium bromide and water, which function as absorbent and refrigerant, respectively.
In this study, a thermodynamic analysis of the cooling system was carried out with an absorption chiller with binary working fluid single effect water/lithium bromide using the Engineering Equation Solver and Cycle Tempo. The Engineering Equation Solver is used to analyze the absorption cooling system and Cycle Tempo is used to simulate the gas power generation system. Variations in condenser temperature and temperature were flue gas carried out with variation values of 30;35;40;45;50 and 101;103;105;107;109, respectively. From this research, it is hoped that the resulting analysis can be used as a cooling recommendation for the combined cycle power plant’s air intake.
The results of the analysis show that the cooling system on the combined cycle power plant’s air intake utilizes waste heat HRSG at the PLTGU UP IP Grati POMU using an absorption chiller Kalt CHP 150. The cooling system has a capacity of 5272kW with a COP value of 0,7357. Gas turbine net power increased by 8,07%.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Absorption Chiller, Waste Heat, Air Intake Refrigeration, Heat Recovery Steam Generator, Combined Cycle Power Plant. |
| Subjects: | Q Science Q Science > Q Science (General) Q Science > QC Physics Q Science > QC Physics > QC162 Adsorption and absorption |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Muhammad Nasution Pangestu |
| Date Deposited: | 10 Aug 2021 12:24 |
| Last Modified: | 10 Aug 2021 12:24 |
| URI: | http://repository.its.ac.id/id/eprint/85397 |
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