VIABILITY OF USING ENGINE ROOM SIMULATORS FOR EVALUATION MACHINERY PERFORMANCE AND ENERGY MANAGEMENT ONBOARD SHIPS

2021 ◽  
Vol 161 (A3) ◽  
Author(s):  
I S Seddiek
Keyword(s):  
Adverse Effects ◽  
Energy Management ◽  
Current Paper ◽  
Fuel Saving ◽  
Saving Energy ◽  
Maritime Education ◽  
Engine Room ◽  
Passenger Ships ◽  
Oil Tanker

The maritime institutions aim at contributing to reducing the adverse effects arising from the ships, machinery operation through the possibilities exit in the engine room simulators. The current paper explains the importance of engine room simulators in maritime education in general and focuses on their use in the field of evaluation and management of machinery within the engine room space. As a case study, an electric powered passenger ship and an oil tanker ship are investigated regarding applying ship energy management onboard. This investigation could be achieved using the possibilities available in TRANSIS ERS 5000. With reference to passenger ships, the results show the possibility of saving energy with a reduction of CO, SOx, CO2 and C emissions by about 7.97, 10.54, 12.36, and 20.11%, respectively. However, regarding tanker ships, the results reveal that a reduction of speed by 10% will achieve fuel saving by about 25%.

Viability of Using Engine Room Simulators for Evaluation Machinery Performance and Energy Management Onboard Ships

2019 ◽  
Vol 161 (A3) ◽  
Keyword(s):  
Adverse Effects ◽  
Energy Management ◽  
Current Paper ◽  
Fuel Saving ◽  
Saving Energy ◽  
Maritime Education ◽  
Engine Room ◽  
Passenger Ships ◽  
Oil Tanker

The maritime institutions aim at contributing to reducing the adverse effects arising from the ships, machinery operation through the possibilities exit in the engine room simulators. The current paper explains the importance of engine room simulators in maritime education in general and focuses on their use in the field of evaluation and management of machinery within the engine room space. As a case study, an electric powered passenger ship and an oil tanker ship are investigated regarding applying ship energy management onboard. This investigation could be achieved using the possibilities available in TRANSIS ERS 5000. With reference to passenger ships, the results show the possibility of saving energy with a reduction of CO, SOx, CO2 and C emissions by about 7.97, 10.54, 12.36, and 20.11%, respectively. However, regarding tanker ships, the results reveal that a reduction of speed by 10% will achieve fuel saving by about 25%.

Behavioral flexibility in Belief-Desire- Intention (BDI) architectures

2020 ◽  
Vol 16 (4) ◽  
pp. 343-377
Author(s):  
Adel Saadi ◽  
Ramdane Maamri ◽  
Zaidi Sahnoun
Keyword(s):  
Critical Review ◽  
Practical Reasoning ◽  
Behavioral Flexibility ◽  
The Other ◽  
Current Paper ◽  
Simple Experiment ◽  
Bdi Agents ◽  
Popular Approach ◽  
Other Hand

The Belief-Desire-Intention (BDI) model is a popular approach to design flexible agents. The key ingredient of BDI model, that contributed to concretize behavioral flexibility, is the inclusion of the practical reasoning. On the other hand, researchers signaled some missing flexibility’s ingredient, in BDI model, essentially the lack of learning. Therefore, an extensive research was conducted in order to extend BDI agents with learning. Although this latter body of research is important, the key contribution of BDI model, i.e., practical reasoning, did not receive a sufficient attention. For instance, for performance reasons, some of the concepts included in the BDI model are neglected by BDI architectures. Neglecting these concepts was criticized by some researchers, as the ability of the agent to reason will be limited, which eventually leads to a more or less flexible reasoning, depending on the concepts explicitly included. The current paper aims to stimulate the researchers to re-explore the concretization of practical reasoning in BDI architectures. Concretely, this paper aims to stimulate a critical review of BDI architectures regarding the flexibility, inherent from the practical reasoning, in the context of single agents, situated in an environment which is not associated with uncertainty. Based on this review, we sketch a new orientation and some suggested improvements for the design of BDI agents. Finally, a simple experiment on a specific case study is carried out to evaluate some suggested improvements, namely the contribution of the agent’s “well-informedness” in the enhancement of the behavioral flexibility.

scholarly journals Monetising behavioural change as a policy measure to support energy management in the residential sector: A case study in Greece

Energy Policy ◽  
2022 ◽  
Vol 161 ◽  
pp. 112759
Author(s):  
Konstantinos Koasidis ◽  
Vangelis Marinakis ◽  
Alexandros Nikas ◽  
Katerina Chira ◽  
Alexandros Flamos ◽  
...  
Keyword(s):  
Energy Management ◽  
Behavioural Change ◽  
Policy Measure ◽  
Residential Sector

scholarly journals Ayurvedic Management of Infertility W.S.R. Anovulation: A Case Study

2019 ◽  
Vol 9 (5-s) ◽  
pp. 151-153
Author(s):  
Neha Pandya ◽  
Hetal P. Baraiya
Keyword(s):  
Adverse Effects ◽  
Ovulatory Cycle ◽  
Menstrual Cycles ◽  
Married Life ◽  
Anovulatory Cycle ◽  
Present Case Study

Patient was anxious to conceive after active married life of 5 years. The present case study was done to evaluate the role of Ayurvedic Shodhana therapy i.e. Yogabasti for two consecutive menstrual cycles in the management of anovulation. After completing two courses of Yogabasti, improvement was noticed i.e. Ovulation study (during treatment - anovulatory cycle, After treatment - ovulatory cycle). The line of treatment was followed in this case was to treat the provoked Vata Dosha and vitiated Rasa Dhatu. There were no adverse effects found during the Ayurvedic Panchakarma procedure i.e. Yogabasti. Keywords: Anovulation, Panchakarma, Shodhana, Yogabasti

scholarly journals ANALYSIS OF HEAT RELEASE RATE IN ENGINE ROOM FIRES OF 300 GT FERRY RO-RO PASSENGER BY USING WATER MIST SYSTEM AND CO2 SYSTEM

2021 ◽  
Vol 15 (2) ◽  
Author(s):  
Wira Setiawan ◽  
Distyan Kotanjungan
Keyword(s):  
Heat Release ◽  
Heat Release Rate ◽  
Release Rate ◽  
Fire Suppression ◽  
Water Mist ◽  
Engine Room ◽  
Passenger Ships ◽  
Dynamic Simulator ◽  
Fire Dynamic Simulator ◽  
Suppression System

Based on statistical data in recent years, there are still quite a number of ship accidents due to fires, including on passenger ships. The water mist system is a fire suppression system that allows it to be used in the engine room with the advantage that it can keep the heat production rate low during the extinguishing process and can be operated earlier than the CO2 system. The research is conducted by using fire dynamic simulator in the engine room of a 300 GT ferry ro-ro passenger to compare the heat release rate of fire without an extinguishing system, an existing CO2 system, and a water mist system. The result shows that the CO2 fire suppression system reduces the heat release rate more rapidly to the decay phase at 375 seconds while the water mist takes more than 900 seconds. However, the fully developed phase of the water mist suppression system occurs more quickly than CO2 because the sprinklers are activated shortly after a fire occurs. Unlike water mist, the CO2 system is activated at 60 seconds so that the pre-combustion, growth, flashover, and fully developed phases are at the same HRR and time as the natural one.

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