Advanced search

Found 5 essays matching the above criteria.

1. 1. Detection of nitrous oxide through IR-DFWM in gas flows with future application in ammonia flames

   University essay from Lunds universitet/Förbränningsfysik; Lunds universitet/Fysiska institutionen

   Author : Martin Passad; [2021]
   Keywords : Physics; Optics; Lasers; Environment; Hydrogen; Hydrogen Energy; Ammonia Energy; DFWM; Ammonia; Nitrous Oxide; Ammonia Flame; Ammonia Combustion; Physics and Astronomy;

   Abstract : This thesis report on an investigation into the applicability of mid-infrared degenerate four-wave mixing (IR-DWFM) as a method to detect N\(_2\)O in ammonia flames. DFWM has previously been used for concentration measurements on other molecules, but has never, to the author's knowledge, been applied to measure N\(_2\)O in ammonia flames before. READ MORE

3. 2. Transient Flow Simulations in Exhaust After Treatment Systems

   University essay from Linköpings universitet/Mekanisk värmeteori och strömningslära

   Author : John Walder; [2020]
   Keywords : Computational Fluid Dynamics; exhaust after treatment system; ammonia mixing;

   Abstract : The exhaust after treatment system is responsible for removing particulates and contaminants from the exhaust gases. The flow entering the SCR, a catalyst utilizing ammonia to reduce NOx emissions, was studied. The quality and distribution of flow entering the SCR plays an important role in the efficiency of the systems. READ MORE

4. 3. Novel Ammonia Storage Materials for SCR Systems : Carbon Materials – Salt Composites

   University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Author : Nicolas Grimaldos Osorio; [2019]
   Keywords : magnesium chloride; ammonia; carbon materials; SCR; NOx reduction; sorption;

   Abstract : The emissions of nitrogen oxides (NOx) are a serious environmental problem due to its relationship with the formation of smog, acid rain and because they are dangerous for human and animal health. These gases are produced in high quantities in diesel engines used for automotive applications, and different strategies are being used to reduce them, among which are the Selective Catalytic Reduction (SCR) systems. READ MORE

5. 4. Graphene-based Coatings for Heat Exchangers

   University essay from Lunds universitet/Centrum för analys och syntes

   Author : Marie Långberg; [2015]
   Keywords : Polyaniline; graphene; materials chemistry; materialkemi; Chemistry;

   Abstract : This master thesis is a part of a larger interwork between SP, KTH and Alfa Laval funded by the SIO graphene programme, which end goal is to formulate an anti-corrosion coating based on graphene or graphene related materials (GRMs). The investigation is partly based on an article “Novel anticorrosion coatings prepared from polyaniline/graphene composites” from 2012 by Chang et al in combination of knowledge acquired during a previous EU project, www. READ MORE

6. 5. An Interdisciplinary Study on Farm Based Biogas Production in Southern Brazil

   University essay from Sektionen för ekonomi och teknik (SET)

   Author : Anders Hjort; Simon Norin; [2008]
   Keywords : Applications; Biogas; Brazil; Digestate; Environmental impact; Pig slurry;

   Abstract : Today the use of anaerobic digestion technique emerges as an alternative to the conventional treatment method of pig slurry to the pig producers in Brazil because of the energy demanding intensive pig production and the negative environmental impact that arises during storage and use. The end products of AD technique are biogas as an energy source and digestate that can be used as a fertilizer. READ MORE