Abstract. Erosion corrosion is a common problem that affects boiler tubes, particularly those in power plants and industrial settings where hard water abrasive particles are present the flow. These can cause physical erosion to surface of which then lead further corrosion. This type often accelerated by high temperatures pressures system, as well presence oxygen. The combination chemical attack...

The stability of the ow of an incompressible, viscous uid through a pipe of circular cross-section, curved about a central axis is investigated in a weakly nonlinear regime. A sinusoidal pressure gradient with zero mean is imposed, acting along the pipe. A WKBJ perturbation solution is constructed, taking into account the need for an inner solution in the vicinity of the outer bend, which is ob...

Ground-source heat pump (GSHP) utilizes the immense renewable storage capacity of the ground as a heat source or sink to provide space heating, cooling, and domestic hot water. GSHP systems are generally comprised of water source heat pumps and ground heat exchangers (GHX). Vertical closed-loop GHX is used predominantly in commercial and institutional applications. Closed loop GHX consists of a...

Abstract Pressure drop and flow pattern of oil–water flows were investigated in a 19-mm ID clear polyvinyl chloride pipe consisting U -bend with radius curvature 100 mm. The range for oil water superficial velocities tested was $$0.04 \le U_{{{\text{so}}}} 0.950 \;{\text{m/s}}$$ 0.04≤<...

Although inlet bent pipes are usually adopted due to limited installation space, the influences of different bend on flow characteristics and performance centrifugal compressors still unclear. The numerical simulation a compressor is established validated by experimental results with case straight pipe. Then, internal 90-degree pipe (p90) Z-shaped (pz) simulated discussed. show that adoption tw...

The authors evaluations using CFD analysis to calculate the rate of pipe bend erosion utilised in fluid-circulating technological installations along with solid particles on small size nature bottom ash are described this work. examined bends have various degrees curvature and same wall thickness diameter is made stainless steel. regions values main goals study. extrados where mostly happens. t...

This work deals with the application of temperature oscillation method to measure local values heat transfer coefficient in laminar flow a straight horizontal pipe and bend. method, applied here for first time such experimental conditions, uses time-varying flux as boundary condition, which is condition third kind. Since an analytical solution conditions could not be identified existing literat...

The safe operation of petrochemical plant requires screening of the pipework to ensure that there are no unacceptable levels of corrosion. Unfortunately, each plant has many thousands of metres of pipe, much of which is insulated or inaccessible. Conventional methods such as visual inspection and ultrasonic thickness gauging require access to each point of the pipe which is time consuming and v...