Load management for high speed ships | |
| Author | Atipun Sawadditanasarn |
| Call Number | AIT Thesis no.ET-96-13 |
| Subject(s) | Architecture and energy conservation Ships--Hydrodynamics Marine engineering |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | This thesis is about the Load Management and Energy Efficiency Methods for maximum power reduction and energy saving of power generating plants and main propulsion plants in high speed ships. The electrical equipment and electrical power generating system are the second most important payload next to the ship's hull and construction. The peak demand of these systems directly affects the size of the electrical power generating plants while the weight affects the size of the main power plants. Not only the initial costs of the electrical system are reduced, but also the storage capacity and amount of energy consumed per operating period can be reduced. From many literature reviews, there has been much effort to reduce the energy consumption of the main propulsion system, but an alternative method of Load Management in High Speed Ships has not been found. Some of the energy audit procedure and system modeling and simulation are formulated to find comparison methods. This begins with the field measurements to assure the results of simulation. The type, amount, electrical power consumption have been surveyed in the preliminary audit and power factor, apparent power, load characteristic have been investigated in the detailed audit. For studying the details of peak components, MICROVIP 3 was used to measure the total load and duty cycling load, and the time interval of use in every five minutes were recorded for each connected load in the total twenty four hours in detailed audit stage. The next step is to create the model to find electrical energy consumption and fuel consumption under the load curve from the field simulation. Moreover, main propulsion model from Aneson Marine Inc. (AMI) were conducted to find power demand of main engine. The technical data of the manufacturer were supplied for finding fuel consumption. A study of the alternative energy efficiency methods were conducted on: high efficacy lights, high efficiency air conditioners and engine heat recovery water heater. High efficacy lights has the least opportunity to reduce peak power while initial costs is increased highest. The high efficiency air conditioners also reduces the peak power and energy but for the peak demand reduction, this methods saves not much enough to decrease the size of power generating plants. Engine heat recovery water heater can save the maximum peak but less in energy savings however it could save the biggest part of power among the three alternative methods. Since the potential of this method is not enough for the next smaller power generating plant alternation then there is not significant change in the main propulsion plant. Demand clipper can not save electrical energy but can save fuel consumption because it does not only cut the peak from the system but also makes the engine operating at more steady state and in the high efficiency range. All of these methods are useful for saving both power and energy if all of them could be combined together. The maximum opportunity of combined method is the initial costs saving of power generating plants while the power reduction and the energy saving is only slightly for the main propulsion plants. The next topic for the further studying in power and energy savings should be "Energy Management for High Speed Ships". |
| Year | 1996 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Energy Technology (ET) |
| Chairperson(s) | Surapong Chiraratananon; |
| Examination Committee(s) | Yu, Cun Yi;Kumar, Sivanappan; |
| Scholarship Donor(s) | Asian Institute of Technology Partial Scholarship ; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1996 |