Improving the efficiency of a steam power plant cycle by integrating a rotary indirect dryer

This article deals with the integration of a rotary indirect dryer, heated by low pressure extraction steam, into the Rankine cycle. The article evaluates the power generation efficiency of a steam power plant, with an integrated indirect dryer, which combusts waste biomass with a high moisture content and is further compared to the same plant without the dryer. The benefits of the dryer’s integration are analysed in respect to various moisture contents of biomass before and after the drying. The evaluation of the power generation efficiency is based on parameters evaluated from experiments carried out on the steam-heated rotary indirect dryer, such as specific energy consumption and evaporation capacity. The dryer’s integration improves the efficiency of the cycle in comparison to a cycle without a dryer, where moist biomass is directly combusted. This improvement increases along with the difference between the moisture content before and after the drying. For the reference state, a fuel with a moisture content of 50% was dried to 20% and the efficiency rised by 4.38 %. When the fuel with a moisture content of 60% is dried to 10 %, the power generation efficiency increases by a further 10.1 %. However, the required dryer surface for drying the fuel with a moisture content of 60% to 10% is 1.9 times greater as compared to the reference state. The results of the work can be used both for the prediction of the power generation efficiency in a power plant with this type of dryer based on the moisture content in the fuel and the biomass indirect dryer design.

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DAMPAK PEMBANGUNAN PEMBANGKIT LISTRIK TENAGA UAP (PLTU) TANJUNG JATI B TERHADAP PERUBAHAN MATA PENCAHARIAN DAN TINGKAT PENDAPATAN (Desa Tubanan Kecamatan Kembang Kabupaten Jepara)

Harmony: Jurnal Pembelajaran IPS dan PKN ◽

10.15294/harmony.v5i2.43670 ◽

2020 ◽

Vol 5 (2) ◽

pp. 155-164

Author(s):

Ayuuk Nooraliza ◽

Rudi Salam

Keyword(s):

Power Plant ◽

Steam Power ◽

Income Levels ◽

Steam Power Plant ◽

The People ◽

Before And After ◽

Negative Impacts

Tanjung Jati B Steam Power Plant (PLTU) is a power plant located in Tubanan Village, Kembang District, Jepara Regency. The existence of the PLTU construction causes various impacts on the surrounding community, such as changes in livelihoods and income levels. This article aims to 1) Describe the livelihoods of the people of Tubanan Village before and after the construction of PLTU Tanjung Jati B, 2) Describe the level of income of the people of Tubanan Village before and after the construction of PLTU Tanjung Jati B, (3) to describe the impacts caused by the existence of development of PLTU Tanjung Jati B. The results of this study found that 1) There were changes in livelihoods due to the construction of PLTU Tanjung Jati B such as housewives becoming parking guards, 2) Increased income of the people of Tubanan Village, 3) There were positive and negative impacts felt by the people of Tubanan Village. Pembangkit Listrik Tenaga Uap (PLTU) Tanjung Jati B merupakan salah satu pembangkit listrik yang berada di Desa Tubanan Kecamatan Kembang Kabupaten Jepara. Adanya pembangunan PLTU menyebabkan berbagai dampak terhadap masyarakat sekitar seperti perubahan mata pencaharian dan tingkat pendapatan. Artikel ini bertujuan untuk 1) Mendeskripsikan mata pencaharian masyarakat Desa Tubanan sebelum dan sesudah adanya pembangunan PLTU Tanjung Jati B, 2) Mendeskripsikan tingkat pendapatan masyarakat Desa Tubanan sebelum dan sesudah adanya pembangunan PLTU Tanjung Jati B, (3) untuk mendeskripsikan dampak yang diakibatkan oleh adanya pembangunan PLTU Tanjung Jati B. Hasil penelitian ini menemukan bahwa 1) Adanya perubahan mata pencaharian akibat pembangunan PLTU Tanjung Jati B, 2) Peningkatan pendapatan masyarakat Desa Tubanan, 3) Adanya dampak positif dan dampak negatif yang dirasakan oleh masyarakat Desa Tubanan.

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Using Design to Teach Thermodynamic Cycles: Designing a 250 MW Steam Power Plant Using the Rankine Cycle

Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award ◽

10.1115/2001-gt-0106 ◽

2001 ◽

Author(s):

Ken Van Treuren ◽

Nicole DeJong

Keyword(s):

Power Generation ◽

Power Plant ◽

Rankine Cycle ◽

System Optimization ◽

Student Interest ◽

Steam Power ◽

Thermodynamic Cycles ◽

Design Project ◽

Steam Power Plant ◽

Typical Component

Power generation is increasingly important in the turbine industry. Students need exposure to the complexities of such systems as found in this design project. This project is part of the second of a two-course thermodynamic sequence designed to provide a foundation in thermodynamics and expose the students to various power generation cycles. One way to teach students the Rankine Cycle is to involve them in the various aspects of the cycle through a design project. Students, in teams of four or five, are given the task of designing a 250 MW steam power plant based on the Rankine Cycle. Calculations are made using the software of choice, usually Engineering Equation Solver (EES). Students are required to make an oral and written presentation. In addition to the presentation of calculations and graphs, an emphasis is placed on describing the general considerations of the design problem and the presentation of the unique advantages of the design. Students gain valuable experience in system optimization and better learn to justify their design decisions. Based on student evaluations the project was well received and increased student interest in the field of power generation. However, there is a need to include an economic component to the problem, and more time must be spent in class discussing typical component operating parameters.

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