Thermoeconomic, Sustainability and Environmental Damage Cost Analysis of Air Cooled CT7-7A Turboprop Engine

The study aims to determine rational overweight permit fee using Mechanistic-Empirical (M-E) pavement design and Life-Cycle Cost Analysis (LCCA). The state-of-art pavement design software, Pavement-ME, was utilized to develop Load Equivalency Factors (LEFs) and estimate pavement service life under various traffic loading conditions. LCCA was conducted to calculate Marginal Pavement Damage Cost (MPDC) in terms of Equivalent Uniform Annual Cost (EUAC) considering variations in maintenance strategies, analysis periods, and discount rates. A methodology framework was established to calculate distance based, weight based, weight and distance based, and flat permit fee for overweight trucks. With the local data obtained in New Jersey (United States), example permit fees were determined for the major and local road network with the thick and thin asphalt pavement structure, respectively. It was found that the truck-induced damage cost varied significantly between thin and thick asphalt pavements considering different failure mechanisms in fatigue cracking and rutting. In general, overweight permit fee may not be fair to overweight trucks at different vehicle classifications if only the total overweight tonnage is regulated in the permit fee structure.

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CO2 leakage environmental damage cost – A CCS project in South Korea

Renewable and Sustainable Energy Reviews ◽

10.1016/j.rser.2018.04.074 ◽

2018 ◽

Vol 93 ◽

pp. 753-758 ◽

Cited By ~ 4

Author(s):

Joo Suk Lee ◽

Eun Chul Choi

Keyword(s):

South Korea ◽

Environmental Damage ◽

Co2 Leakage ◽

Damage Cost

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A Parametric Study of Hydrogen Fuel Effects on Exergetic, Exergoeconomic and Exergoenvironmental Cost Performances of an Aircraft Turbojet Engine

International Journal of Turbo and Jet Engines ◽

10.1515/tjj-2019-0043 ◽

2019 ◽

Vol 0 (0) ◽

Cited By ~ 1

Author(s):

Ozgur Balli

Keyword(s):

Jet Fuel ◽

Environmental Damage ◽

Hydrogen Fuel ◽

Fuel Cost ◽

Damage Cost ◽

High Increase ◽

Specific Product ◽

Cost Rate ◽

Turbojet Engine ◽

Fuel Effects

Abstract A comprehensive exergetic, exergoeconomic and exergoenvironmental analyses of a turbojet engine are performed to determine how the hydrogen fuel usage affects the exergetic and exergoeconomic performances of the turbojet engine. The exergy efficiency of the engine reduces from 15.40 % to 14.33 % while the waste exergy rate increases from 22.31 GJ/h to 24.01 GJ/h. However, the high increase in the fuel cost rate and specific fuel exergy cost with the hydrogen fuel causes that the specific product exergy cost rises up from 134.69 US$/GJ to 355.11 US$/GJ. The environmental impact of CO2 decreases by 99.12 % while the environmental damage cost rate lessens by 112.16 % with hydrogen usage. In this regard, the environmental damage cost rate decreases from 322.50 US$/h to 2.85 US$/h. The exergoenvironmental cost rate is determined to be 869.64 US$/h for jet fuel while it is obtained to be 1429.32 US$/h for hydrogen fuel. In this case, the specific exergoenvironmental cost is calculated to be 214.08 US$/GJ for jet fuel and 355.82 US$/GJ for hydrogen fuel.

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CULTURAL FISH CULTIVATION IN FLOATING NETWORK IN KELURAHAN BELAWAN SICANANG KOTA MEDAN

ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat ◽

10.32734/abdimastalenta.v4i1.2375 ◽

2019 ◽

Vol 4 (1) ◽

pp. 32-37

Author(s):

Salmiah ◽

Charloq ◽

Thomson Sebayang

Keyword(s):

Cost Analysis ◽

Oil And Gas ◽

Technology Development ◽

Natural Habitat ◽

Economic Value ◽

High Price ◽

Environmental Damage ◽

Marine Aquaculture ◽

Luxury Hotels ◽

Tiger Grouper

Grouper is one of the non-oil and gas export commodities that has the potential to be developed. As fish, fish consumption is much needed for restaurants and luxury hotels. The weight range of 500 - 100 grams / head, especially in living conditions, has a high price compared to in the form of dead fish.In 1999, research and development for multi-species harchery carried out jointly by the Gondol Marine Aquaculture Research Center with JICA first successfully produced mass of duck grouper seeds, cromileptes altivelis and tiger grouper seeds (Kawahara, et. Al ., 2000; Sugama et.al., 2001). Whereas to mass produce sunu grouper seeds in 2005. Technology development has been disseminated to government and private hatcheries, so that the production of duck grouper seeds has increased dramatically and more than 1 million seeds in 2001 (Kawahara and Ismi, 2003). This technology is also applied to the production of tiger grouper seeds, Ephinephelus fuscoguttatus by private hatcheries. In 2002, tiger grouper seed production was more than 2.6 million. For sunu groupers up to now, more than 0.5 million in 2006.Belawan Sicanang Village Medan Belawan District Medan City is an island surrounded by several tributaries which empties into the Deli River. 40% of the population are fishermen who are looking for shrimp or fish in the river and land pond farmers. Grouper is one of the fish that lives naturally in the waters of Belawan Sicanang Village which has high economic value. But environmental damage such as logging of mangroves due to the low alternatives of community livelihoods, changes in the function of land, continuous capture of the land causes the grouper population to continue to decline.The use of the river for floating cages in grouper aquaculture can reduce the reduced supply of groupers from the natural habitat of fishermen's catches produced by this region. Cheaper cost analysis compared to terrestrial aquaculture can improve the welfare of fishermen and support culinary commodities in the development of Mango Sicanang ecotourism which is being promoted by the community and the local government.

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Exergetic, Exergoeconomic, Sustainability and Environmental Damage Cost Analyses of J85 Turbojet Engine with Afterburner

International Journal of Turbo and Jet Engines ◽

10.1515/tjj-2017-0019 ◽

2020 ◽

Vol 37 (2) ◽

pp. 167-194 ◽

Cited By ~ 3

Author(s):

Ozgur Balli

Keyword(s):

Environmental Damage ◽

Exergetic Efficiency ◽

Damage Cost ◽

Cost Index ◽

Cost Analyses ◽

Total Cost ◽

Cost Rate ◽

Sustainability Index ◽

Turbojet Engine ◽

Performance Analyses

AbstractThis paper deals with the performance analyses of exergetic, exergoeconomic, sustainability and environmental damage cost for J85 turbojet engine at Idle (ID), Intermediate (INT), Military (MIL) and Afterburner (AB) operation modes. The exergetic efficiency of whole engine is calculated to be 0.24 % at ID, 18.67 % at INT, 29.81 % at MIL and 22.77 % at AB modes, respectively. The unit exergy cost of product is accounted to be 30,423.94 $/GJ at ID, 269.35 $/GJ at INT, 121.47 $/GJ at MIL and 133.47 $/GJ at AB modes. The sustainable cost index is found to be 30,350.92 $/GJ at ID, 224.45 $/GJ at INT, 85.26 $/GJ at MIL and 103.0 $/GJ at AB modes while the sustainability index is obtained to be 1.0 at ID, 1.2 at INT, 1.43 % at MIL and 1.3 at AB modes. On the other hand, the environmental damage cost rate of engine are calculated to be 180.22 $/h at ID, 271.34 $/h at INT, 657.95 $/h at MIL and 1992.55 $/h at AB modes while the total cost rates of engine are determined to be 974.07 $/h at ID, 1357.15 $/h at INT, 2641.76 $/h at MIL and 6573.04 $/h at AB modes, respectively. The results indicate that J85 engine operates the exergetic-efficiently and cost-effectively at MIL mode.

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