scholarly journals Kajian Dispersi Panas Dampak Rencana Pembangunan PLTU Sampit-Kotawaringin Timur Propinsi Kalimantan Tengah

2018 ◽  
Vol 16 (1) ◽  
pp. 86 ◽  
Author(s):  
Mardi Wibowo ◽  
Wahyu Hendriyono
Keyword(s):  
Waste Water ◽  
Power Plant ◽  
Water Temperature ◽  
River Flow ◽  
Cooling System ◽  
High Tide ◽  
Cooling Water ◽  
Aquatic Life ◽  
The Impact ◽  
Mike 21

ABSTRAKSaat ini untuk memenuhi kebutuhan energi listrik pemerintah mencanangkan program pembangunan pembangkit listrik 10.000 MW. Salah satu implementasinya dengan membangun Pembangkit Listrik Tenaga Uap (PLTU) berbahan bakar batubara seperti PLTU Sampit di Kabupaten Kotawaringin Timur, Propinsi Kalimantan Tengah. Permasalahan utama kegiatan PLTU adalah suhu air buangan yang jauh lebih tinggi dari suhu perairan di sekitarnya. Kenaikan suhu iniselain akan mengurangi efisiensi system pendinginan juga dapat membahayakan kehidupan aquatik. Untuk meminimalkan dampak perlu dilakukan pemodelan adveksi/dispersi panas sebelum dilakukan pembangunan PLTU. Dengan pemodelan ini akan diketahui sebaran panas buangan PLTU sehingga sejak awal dapat dilakukan upaya-upaya untuk mengurangi dampak negatif yang muncul. Selain itu model ini dapat dipakai sebagai bahan pertimbangan dalam penentuan lokasi intake dan outfall sistem air pendingin. Studi ini dilakukan dalam beberapa skenario dengan menggunakan perangkat lunak MIKE-21. Berdasarkan hasil pemodelan diketahui bahwapola arus di perairan sekitar PLTU Sampit lebih dipengaruhi pasang surut dan debit sungai dari hulu. Pada musim timur, suhu air pada lokasi intake cukup terpengaruh oleh suhu air bahang pada outfall khususnya ketika air laut pasang. Perubahan temperaturair pada intake berkisar antara 30,1 – 32 oC. Kenaikan tertinggi terjadi ketika air menuju pasang naik maksimum. Pada musim angin barat, suhu air pada lokasi intake hanya sedikit terpengaruh oleh suhu air bahang pada outfall, perubahan temperatur air pada intake hanya berkisar antara 29,99 – 30,1 oC. Kenaikan tertinggi terjadi ketika air menuju pasang naik maksimum. Resirkulasi air pendingin dengan intensitas cukup besar (+ 2oC) diprediksi terjadi saat air pasang. Hal ini dapat menjadi lebih parah bila debit sungai dari hulu berkurang yaitu ketika musim kemarau.Kata kunci: dispersi panas, PLTU, air bahang, intake, outfallABSTRACTNow to comply the electricity needs, government announced the construction of 10,000 MW power plant. One of its implementation by building Steam Power Plant (PLTU) with coal-fired power such as Sampit in the District of Eastern Kotawaringin, Province of Center of Kalimantan. The main problem of power plant activities is the waste water temperatures much higher than the temperature of the surrounding waters. The rise of temperature will not only reduce the efficiency of the cooling system but also be harmful to aquatic life. To minimize the impact needs to be done advection/dispersion modeling of heat water prior to the construction of the power plant. With this modeling will be known distribution of heat waste from power plant in 2-dimensional, so that can be done since the beginning of efforts to reduce the negative impacts that arise. In addition, this model can be used as a consideration in the determination of the location of the intake and outfall system cooling water. This study was conducted in several scenarios using software MIKE-21. Based on modeling results is known that the current pattern in the waters around the Sampit power plant is more affected by tidal and river flow from upstream. In east monsoon, the water temperature at the intake is quite affected by the heat water temperature at the outfall especially when high tides. Water temperatur changes in intake ranged from 30.1 to 32 oC. The highest increase occurred when the water toward the maximum high tide. In the west monsoon, the water temperature at intake only slightly affected by the heat water temperature on the outfall. Eater temperatur changes on the intake only ranged from 29.99 to 30.1°C. The highest increase occurred when the water toward the maximum high tide. Recirculation cooling water with considerable intensity (+ 2°C) could occur during high tide. It can be more severe if the river flow from upstream is reduced like as at the dry season.Keywords: thermal dispersion, steam powerplant, heat waste water, intake, outfallCitation: Wibowo, M., Hendriyono, W., Nugroho, S., Al Hakim, B., Velly Asvaliantina. V.  (2017). Kajian Dispersi Panas Dampak Rencana Pembangunan PLTU Sampit-Kotawaringin Timur Propinsi Kalimantan Tengah. Jurnal Ilmu Lingkungan, 16(1), 86-97, doi:10.14710/jil.16.1.86-97

Implementation of Life Cycle Assessment Method (LCA) and Analytical Hierarchy Process (AHP) to Determine the Development of Recycling Unit of Waste Water in Grati CCPP PT Indonesia Power up Perak Grati

2018 ◽  
Vol 874 ◽  
pp. 18-26
Author(s):  
Mila Tartiarini ◽  
Udisubakti Ciptomulyono
Keyword(s):  
Waste Water ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Power Plant ◽  
Power Plants ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Waste Water Treatment Plant ◽  
Service Water ◽  
The Impact

Waste water result from operating activities of Grati Combined Cycled Power Plant (CCPP) is significant amount and has potentially to be reutilized. A recycling unit as the pilot project has been applied in Grati CCPP PT Indonesia Power UP Perak Grati for capacity 4 tons/hour of service water product. Development plant of Grati CCPP up to year 2018 will produce more amounts of waste water, and potentially increase the pollution load in the unit area.Considering the use of alternative development for unit recycled waste water effluent from the Waste Water Treatment Plant (WWTP) has implications to the environmental and cost aspects, therefore a proper assessment to decide the alternative is needed. Proposed method of Life Cycle Assessment (LCA) is to measure the impact to the environment. And the Cost Benefit Analysis (CBA) is to measure the economic criteria. To integrate the results of the two methods, it is used and calculated by using Hierarcy Analytical Process (AHP).The result of the study about the environmental impact and economic analysis, the development of the recycling unit is required to process all waste water produced by power plants. Focus group by experts in power plant operation using AHP is based on the results of SimaPro 7.0 and CBA. The most beneficial result is with a single score of 0.2314 Pt / 1 ton of water service, the payback period of 2.5 years, 37.5% IRR and NPV US$ 88,577.23 and the MMF-RO unit for total capacity of 14 tons/hour has become the most alternative of development.

The Design Analysis of a Water Sourced District Heating and Cooling System for a Neighborhood Development Project

2011 ◽  
Author(s):  
Hongxi Yin ◽  
Yuefeng Cai ◽  
Hengxing Lv ◽  
Ming Qu ◽  
Guowei Ao ◽  
...  
Keyword(s):  
Cooling System ◽  
Cooling Water ◽  
Energy Systems ◽  
Development Project ◽  
Hunan Province ◽  
Neighborhood Development ◽  
Xiangjiang River ◽  
Absorption Chillers ◽  
Chilled Water ◽  
The Impact

On the basis of the principles of Green Infrastructure and Building (GIB) in LEED for Green Neighborhood Development (LEED-ND), this paper studies the technical feasibility, economic soundness, and environmental effectiveness of a water-sourced energy system in a 6.5 million square feet mixed-use neighborhood development project in Changsha, Hunan Province, China. Two energy systems proposed for the project are compared in the study by using scientific fundamentals and engineering principle. The two energy systems are: • System One: Use Xiangjiang River as cooling water for absorption chillers to generate chilled water for all buildings. • System Two: Use traditional cooling towers providing cooling water for absorption chillers to generate chilled water for all buildings. The system performance analyses of study show that system one has better energy, environmental and economic performance than system two. Compared to system two, system one is predicted to have a saving of 32% in electricity, 11% in natural gas, and 675 ton/year in CO2 emission; and its system payback year is 8 years. This paper also investigated the impact of system one on the Xiangjiang River by using Fluent computational fluid dynamics (CFD). The results of the CFD simulation indicated that there no significant changes of river temperature over time.. Finally, some suggestions on design and operation have been provided for system one to be implemented.

Study on the Impact of Water Environmental Factors on Dominant Species of Phytoplankton around the Power Plant in Xiangshan Bay

2012 ◽  
Vol 610-613 ◽  
pp. 3371-3374 ◽  
Author(s):  
Hong Yang ◽  
Ying Zhao ◽  
Hui Rong Zhang ◽  
Gui Xiang Dai ◽  
Jun Ding ◽  
...  
Keyword(s):  
Power Plant ◽  
Environmental Factors ◽  
Statistical Model ◽  
Water Temperature ◽  
Temperature Increase ◽  
Dominant Species ◽  
Thermal Discharge ◽  
Xiangshan Bay ◽  
The Impact ◽  
Growth And Reproduction

The SPSS19.0 software was used to analyse the data of enclosure experiments last for 7 days in summer of 2011. Water temperature increase as a factor to establish the statistical model, and the response relation of thermal discharge warming and Coscinodiscus Jonesianus biomass was analyzed quantitatively. The results showed that, it would promote Coscinodiscus Jonesianus growth and reproduction with the water warming at 0.2°C to 0.79°C , which would be restrained at the water warming at 0.8°C to 2.0°C. When the water temperature increase 0.1°C, 0.4°C and 0.7°Cwill respectively result in Coscinodiscus Jonesianus biomass grow 216.12%, 72.87% and 15.05%. While the water temperature increase 1.0°C, 1.5°C and 2.0°C will respectively result in Coscinodiscus Jonesianus biomass reduce 6.38%, 17.95% and 26.17%.

scholarly journals Analysis of the evaporative towers cooling system of a coal-fired power plant

2012 ◽  
Vol 16 (suppl. 2) ◽  
pp. 375-385 ◽  
Author(s):  
Mirjana Lakovic ◽  
Slobodan Lakovic ◽  
Milos Banjac
Keyword(s):  
Energy Efficiency ◽  
Power Plant ◽  
Theoretical Analysis ◽  
Power Plants ◽  
Cooling Tower ◽  
Cooling System ◽  
Low Cost ◽  
Cooling Water ◽  
Energy Efficiency Improvement ◽  
Condensing Pressure

The paper presents a theoretical analysis of the cooling system of a 110 MW coal-fired power plant located in central Serbia, where eight evaporative towers cool down the plant. An updated research on the evaporative tower cooling system has been carried out to show the theoretical analysis of the tower heat and mass balance, taking into account the sensible and latent heat exchanged during the processes which occur inside these towers. Power plants which are using wet cooling towers for cooling condenser cooling water have higher design temperature of cooling water, thus the designed condensing pressure is higher compared to plants with a once-through cooling system. Daily and seasonal changes further deteriorate energy efficiency of these plants, so it can be concluded that these plants have up to 5% less efficiency compared to systems with once-through cooling. The whole analysis permitted to evaluate the optimal conditions, as far as the operation of the towers is concerned, and to suggest an improvement of the plant. Since plant energy efficiency improvement has become a quite common issue today, the evaluation of the cooling system operation was conducted under the hypothesis of an increase in the plant overall energy efficiency due to low cost improvement in cooling tower system.

scholarly journals Some Considerations for EM Cooling Systems

1997 ◽  
Vol 5 (6) ◽  
pp. 18-21
Author(s):  
Allan Mitchell
Keyword(s):  
Electron Microscope ◽  
Water Temperature ◽  
Cooling System ◽  
Cooling Water ◽  
Chloride Concentration ◽  
Closed Circuit ◽  
Water Cooling ◽  
High Chloride Concentration ◽  
Local Water ◽  
Water Cooling System

For numerous reasons a closed-circuit water cooling system is the preferred option for providing cooling water to the electron microscope. Cooling water is required by the electron microscope to cool the diffusion pumps and to keep the electronics' and coiumn temperature stable.A closed-circuit water cooling system is essential if the local water supply has a high chloride concentration, has floating particles, is acidic, has a water temperature that fluctuates and is uncontrollable. This potentially leads to specimen drift problems in the TEW, and/or has a water temperature that is very cold. This potentially leads to condensation problems or diffusion pumps not functioning properly in the TEM.

scholarly journals Study of the Rostov nuclear power plant efficiency operation under increased vacuum value

2020 ◽  
Vol 329 ◽  
pp. 03049
Author(s):  
Aleksey Babushkin ◽  
Sergey Skubienko ◽  
Ludmila Kinash
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Water Temperature ◽  
Nuclear Power ◽  
Cooling Water ◽  
Climatic Conditions ◽  
Pressurized Water Reactor ◽  
Pressurized Water ◽  
Cooling Water Temperature ◽  
Turbine Condenser

In this study, the influence of the cooling water temperature on the thermal efficiency of a conceptual pressurized-water reactor nuclear- power plant is studied. The change in the cooling water temperature can be experienced due to the seasonal changes in climatic conditions at plant site. The article presents the results of technical and economic parameters study of nuclear power unit’s operation under increased vacuum value. Investigated seasonal variations of cooling water temperature, cooling water temperature influence on the vacuum temperature in the turbine condenser, and changing the basic technical and economic performance of nuclear power station. The mathematical model of calculation the nuclear power plant operation for a 1000 MW power unit was developed.

Sign in / Sign up

Export Citation Format

Share Document