Essays about: "propan"

Showing result 1 - 5 of 6 essays containing the word propan.

1. 1. Performance Analysis of CO2 Heat Pumps in Different Applications

   University essay from KTH/Skolan för industriell teknik och management (ITM)

   Author : Jaykumar Thanggavelu; [2022]
   Keywords : CO2 Heat pump; COP; District heating; commercial buildings; residential buildings; field measurement data; Propane; Ammonia; R-134a; CO2 Värmepump; COP; Fjärrvärme; kommersiella byggnader; bostadshus; fältmätningsdata; Propan; Ammoniak; R-134a;

   Abstract : This study focuses on researching the performance of CO2 heat pumps in different real-time applications and in some studies, it compares the performance to synthetic and other natural refrigerants based on heat pump data provided from buildings. The research on the performance of the CO2 heat pump is performed based on Sweden's climatic conditions. READ MORE

3. 2. Chemical modification of regenerated-cellulose films with determined patterns and different regeneration mediums to achieve superhydrophobic properties

   University essay from Mittuniversitetet/Institutionen för kemiteknik

   Author : Pornpan Kongthong; [2021]
   Keywords : Surface roughness; regeneration of cellulose; Regenerated-cellulose; superhydrophobic surfaces; Alkyl Ketene Dimer AKD ; Scanning Electron Microscope SEM and X-Ray diffraction XRD ;

   Abstract : In our modern society there is a need to find a material that is biodegradable to reduce the use of plastic for a greener society. By means of superhydrophobic surfaces there is a possibility to replace plastic with cellulose and use Alkyl Ketene Dimer (AKD) as a sizing agent to make the surface hydrophobic. READ MORE

4. 3. Evaluation of an economizersolution for a heat pump

   University essay from KTH/Skolan för industriell teknik och management (ITM)

   Author : Elsa Forsgren; [2020]
   Keywords : ;

   Abstract : This thesis evaluates the performance of a heat pump intended to be used as an economizer. The idea is to use the heat from still hot refrigerant after the condenser in a larger heat pump, running on propane, as the heat source for the economizer pump. READ MORE

5. 4. Analysis of short chain fatty acids in faecal samples : development and validation of a new method

   University essay from SLU/Dept. of Food Science

   Author : Nils Ewald; [2016]
   Keywords : short chain fatty acids; SCFA; faeces; dietary fibre; quantification; gas chromatography; flame ionization detector; GC-FID;

   Abstract : Short chain fatty acids (SCFA) are produced by the gut microflora following the intake of complex carbohydrates and have been suggested as a contributor for some of the health benefits associated with dietary fibre (DF) intake. For further research of the mechanisms and effects of SCFA, reliable and accurate methods for analysis of SCFA in different biological samples are needed. READ MORE

6. 5. Development of optimized Raman Spectroscopy setup for species detection in flames

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

   Author : Henrik Johansson; [2016]
   Keywords : multi-pass; Raman; spectroscopy; species concentration; flames; combustion; Stokes; high-power laser; Physics and Astronomy;

   Abstract : A multi-pass Raman spectroscopy setup, consisting of a measuring cell built as a cavity, using two concave circular mirrors, has been constructed and optimized. As the light reflects between the mirrors, the Stokes Raman signal is enhanced with every pass through the cavity. READ MORE