An Onboard Air Conveyer Oil Skimmer
A high power air conveyer oil skimming system and implementation on a real oil recovery vessel are presented. Port and Airport Research Institute (PARI) has succeeded in development of a new type of onboard oil recovery system. Development of the project has been in cooperation with the Shikoku Regional Bureau, Ministry of Land Infrastructure and Transport Japan (MLIT). The system employs a high-power vacuum blower for sucking liquid in gas-liquid multiphase form. Its applicability to an onboard oil recovery system has been experimentally investigated. The experiments have shown that the method can respond to the wide range of viscosity of the spilled oil and works well even in wavy sea condition. These results have been applied to the oil skimming system mounted on ISHIZUCH - an oil recovery vessel owned and operated by MLIT recently refitted by Mitsui Engineering & Shipbuilding Co., LTD
PRESSURE DROP OF TWO PHASE FLOW OF HIGHLY VISCOUS LIQUID AND AIR INSIDE PIPE
Characteristics of two phase flow composed of air and viscous liquid in pipes were investigated. Pressure drop in horizontal pipes was measured for some working fluid pairs such as viscous oil/air or viscous polymer/air. Test results showed good agreement with the Lockhart-Martinelli equation in a range of viscosity up to several thousand cP. It was found that water added to the two phase flow drastically decreases the pressure loss. In addition to the pressure drop measurements, suction experiments using several types of suction inlets were carried out and a basic design concept for the shape of the inlet was obtained.
R&D users guide to the Ohmsett Oil Spill Response Test Facility
Abstract Ohmsett – the National Oil Spill Response Test Facility, is the world's largest tow/wave tank designed to evaluate the performance of equipment that detects, monitors and clears up oil spills under environmentally safe conditions. Ohmsett is the only facility capable of testing and training with oil, using full-scale response equipment.