Option 2 (Economizer & Heat Excharger) is more optimum than option in analytical techniques. Treatment time to second option is 42.03 hours. Pessure drop 38.697 kPa at thermal oil after economizer and 28.476 kPa after heat excharger. Over design 5.85% at Economizer and 3.49%5 at heat excharger. Second option having a duty 3.38 MegaWatts at economizer and 3.1227 MegaWatts at heat excharger. Treatment time to this option is 44.424 hors. Pessure drop 63.287 kPa at thermal oil after economizer and 68.196 kPa after bundles. Over design 2.01% at Economizer and 7.1%5 at bundles. First option having a duty 2.503 MegaWatts at economizer and 1.9567 MegaWatts at bundles. For all calculation and anaalysis is using softwere HTRI. And from economizer to heat excharger is using thermal oil as a heat medium. The second option is using economizer and heat excharger where a same heat source, but sea water from ballast tank sirculated to heat excharger. First option is using economizer and bundles to transfer a heat from a source heat of exhaust gas then medium by thermal oil circulated. This study was aimed to calculate and analysis the effectiveness of the system treatment between Option 1 (Economizer & Bundle) and Option 2 (Economizer & Heat Excharger) then it will compare. The decision-making tools such as ballast water heater, flow-through system and others where possible these tools can minimize waste species in ballast water at a certain temperature or pressure of the flow according to the calculations. To safe ships space the service tank is recommended put in the main deck to prevent the use of protective cofferdam.īased on the International Ballast Water Management regulations (IBWM), waste water ballast itself has the attention of some researchers to reduce the amount of waste species present in the ballast water with a variety of methods, as of biological, physical, mechanical, and chemical. The specific fuel consumption will be increased by factor 46% compared to fuel oil SFOC and the storage tank shall be protected by cofferdam that takes a lot of space. Implementation the regulation on board ship resulting loses the payload of their cargo. To make it safe, the thick one should be used. Calculation method to selecting pipes thickness also different. Some regulation also doesn't mention about the detail material that should be use in the system. The result shows that there still some different opinion on the three regulations that regulate the methanol as ship fuel. Comparing the three regulations and selecting the regulation that has high safety level is the best way to design the methanol-fueled ship. Classification society that has the regulation for using methanol is LR and DNV GL. The document that can be found to represent the draft of IMO IGF Code is report of SubCommittee of Carriage Cargo and Containers (CCC) 3-3. IMO has not release regulation of using methanol as fuel but there is some draft is in process. Methanol is one of new fuel in the shipping industry because of that there are lack of regulation for this fuel. It is one of promised solution for being shipping fuel because of it feedstock and produces less pollution than fossil fuel. Such a variance only amounts to ☒ units for every 100,000 units of volume or 0.002% (2/1000ths of 1%).Methanol is a safe, cost-effective alternative marine fuel. Because the calculations are based on exact numbers, coefficients, and constants, there may be a variance of up to 0.00002 between the computed values below and those found in the traditional tables. The calculator below omits the tables and computes the required values for you. Such methods are often time-consuming and tedious. Traditionally, CTL/VCF values are found in books/tables provided by the American Petroleum Institute, matching the temperature and density to find the CTL/VCF values. These two numbers will be computed with the coefficient of thermal expansion at 60☏ (α₆₀) based on the selected commodity and return the CTL/VCF Value. Using the calculator below, enter the Temperature in degrees Fahrenheit ( ☏ ), and the Density in Degrees API. As such, the CTL/VCF value is computed using the observed temperature and density of a liquid. The CTL/VCF is typically a number between 0 and 2, rounded to 5 decimal places, which when multiplied by the observed volume of a liquid, will return the corrected value to a standardized base temperature and density. Volume Correction Factor (VCF) – The Correction for the effect of Temperature on Liquid (CTL)ĬTL, commonly referred to as VCF, is a standardized computed factor used to correct for the thermal expansion of liquids, primarily, liquid hydrocarbons.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |