University of Twente Student Theses


ORC Evaporator fouling by biomass combustion

Derkink, I.H. (2015) ORC Evaporator fouling by biomass combustion.

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Abstract:This report is the result of my internship at Triogen. Triogen is a company that develops and produces Organic Rankine Cycles. Triogen encountered fouling of the evaporator when the ORC was heated with flue gasses from solid biomass combustion. The main goal of the internship was assessing the feasibility of commercially available, technical solutions to increase the uptime for a relatively small scale heat exchanger which evaporates toluene. Several methods to improve the uptime of heat exchangers in fouling conditions were investigated: 1. Online cleaning to clean the heat exchanger while the machine is running. 2. New heat exchanger design to decrease the amount of fouling collected and ease cleaning. 3. Sensitivity analysis on different parameters to optimize the current heat exchanger design. The work for done during the internship was contacting and meeting several suppliers and discussing the options for the first two methods. A selection of the systems was made and a test plan was made. The third method to improve the uptime was investigated by using Triogen’s software to design heat exchangers. A revised design was made which was able to handle the fouling better. The revised design was ordered by the end of the internship.
Item Type:Internship Report (Master)
Tri-O-Gen, the Netherlands
Faculty:ET: Engineering Technology
Subject:52 mechanical engineering
Programme:Sustainable Energy Technology MSc (60443)
Keywords:Biomass, Organic Rankine cycle, ORC, Triogen, heat exchanger, fouling
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