This study presents a design method to fabricate a novel hybrid-structure flat plate heat pipe (NHSP heat pipe) for a concentrator photovoltaic. The NHSP heat pipe is composed of a flattened copper pipe and a sintered wick structure, and a coronary-stent-like rhombic copper mesh supports the structure. The coronary-stent-like supporting structure enhances the mechanical strength and shortens th...

Rehabilitation of a watermain by grouted sliplining is usually carried out when the existing pipe is only partially deteriorated. Although designs that neglect the structural contributions from the existing pipe and the grout are generally conservative, the performance of the rehabilitated pipe needs to be better understood for effective design and management of buried water pipes. Presented in...

Diameter pipe.robot, called the Multifunctional Robot for IN-pipe inSPECTion. In-pipe robots, which have a long history of development in robotics, can be.This paper describes a mobile feeder pipe inspection robot that can minimize the irradiation dose to human workers by automating the measurement process.Recently, many pipe inspection robot systems have been developed. Initially, development ...

Miniature heat pipe (MHP) with woven-wired wick was used to cool the CPU of a notebook PC. The pipe with circular cross-section was pressed and bent for packaging the MHP on the very limited space of a notebook PC. A cross-sectional area of the pipe is reduced about 30% when the MHP with 4mm diameter is pressed to 2mm thickness. In this study, a performance test has been performed in order to r...

Corrosion in pipe work is a major problem. While most plants have reliable information on most equipment, the least data available is always with respect to their piping. Significant portions of plant piping and pipelines are insulated or buried and hence, even external corrosion cannot be readily observed. Ultrasonic guided waves in the pipe wall provide an attractive solution as the waves are...

Pipeline surface defects such as cracks cause major problems for asset managers, particularly when the pipe is buried under the ground. The manual inspection of surface defects in the underground pipes has a number of drawbacks, including subjectivity, varying standards, and high costs. An automatic inspection system using image processing and artificial intelligence techniques can overcome man...

A method for the measurement of pipe systems from a collection of images is presented. A predefined library of parameterized object models defined by CSG trees is used to describe several types of piping elements. An initial measurement of each component of the pipe system is obtained by selecting the appropriate model from the library, projecting this model into the images and modifying the po...

ABSTRACT Active radon mitigation systems with a large flexibility in their complexity are simulated via computer calculations assuming incompressible gas flow dynamics. When designing more complex, multiple branch systems, insight into the turbulent flow dynamics inside the systems vent pipes may be of advantage in design and optimization of pipe sizing and radon ventilator characteristics. I w...