Thermal isolation of steel pipelines employed in the transportation of hot fluids from thermal sprayed coatings
Journal Title: TecnoLógicas - Year 2017, Vol 20, Issue 40
Abstract
Ceramic coatings of Al2O3, Al2O3-TiO2, and Al2O3-ZrO2commercial powders were thermally sprayed on the external surface of ASTM A106 Grade-B carbon steel pipelines (with and without a bond coat ofa commercial nickel alloy) to reduce the loss of heat contained in hot fluids that are transported through this kind of ducts. The bond coat, as well as the ceramic coatings, were deposited by means of oxy-acetylene thermal spray; afterwards, the heat transfer in transitory state was evaluated by placing heated silicone oil at 160°C inside the pipelines. The temperature variation over time of the silicone oil and the external wall of each pipeline was measured. Besides the low thermal conductivity of the ceramic materials, a thicker and more porous coating provides a more effective means for thermal isolation. Additionally, the bond coat acts as a thermal resistance, which consumes heat and contributes to the reduction of the superficial temperature of the pipeline.
Authors and Affiliations
Daniel García-Muñoz, Fabio Vargas-Galvis
Keywords
Related Articles
- EP ID EP346277
- DOI 10.22430/22565337.705
- Views 65
- Downloads 0
Development and Testing of a Real-Time LoRawan Sniffer Based on GNU-Radio
This paper shows the vulnerabilities present in a wireless sensor network implemented over a long-range wide area network (LoRaWAN) LoRaWAN, and identifies possible attacks that could be made to the network using sniffin...
Performance of clustering techniques for solving multi depot vehicle routing problem
The vehicle routing problem considering multiple depots is classified as NP-hard. MDVRP determines simultaneously the routes of a set of vehicles and aims to meet a set of clients with a known demand. The objective funct...
Technical-economic feasibility analysis of micro grids integrating fuel cells in non-interconnected zones in Colombia
The sustainable power solutions provided tonon-interconnected zonesshould bebased on the renewable energy resources available in each area. Thispresents a challenge for the techno-economic feasibility of alternativ...
Subharmonic ripple analysis of an interleaved buck converter based on the Filippov method
In many papers, the averaged model of power switching converters is used to design the control system due to its simple manipulation, which can be approximated by linear transfer functions. Therefore, the power converter...
IMU-Mouse: design and implementation of a pointing device for people with disabilities
The correct application of ICTs (information and communications technologies) to the education of people with physical disabilities requires studies aimed to adapt interfaces. Controlling the desig...