Rijn, Stijn, van (2020) Designing and calibrating an aerosol measurement infrastructure in Lutjewad. Master's Research Project 1, Energy and Environmental Sciences.
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Abstract
In this thesis an aerosol measurement infrastructure is designed for the Lutjewad station of atmospheric research. This infrastructure must constantly sample air from 20 meters height and transport the sample to the ground level. After an subsampling, the sample is transported through a sample pipe and a manifold to three measurement devices: a Scanning Mobility Particle Sizer, a Cloud Condensation Nuclei Counter and an Aerosol Chemical Speciation Monitor. Using theoretical equations of aerosol transport efficiency, a model is built to calculate the transport efficiency in the inlet as a result of particle loss due to diffusion, gravitational settling, impaction and isokinetic sampling. The particle transport efficiency from the sample pipe is also tested experimentally, focussing on losses due to diffusion. The actual aerosol transport efficiency was slightly lower compared to the theoretical values from the model. Since the model describes a perfect system, it represents the maximum theoretical efficiency. The lower aerosol transport efficiency was expected, for the inlet in reality in not perfect. A proper calibration with the entire infrastructure is advised for the future.
| Item Type: | Thesis (Master's Research Project 1) |
|---|---|
| Supervisor name: | Dusek, U. and Scheeren, H.A. |
| Degree programme: | Energy and Environmental Sciences |
| Thesis type: | Master's Research Project 1 |
| Language: | English |
| Date Deposited: | 16 Apr 2020 08:41 |
| Last Modified: | 16 Apr 2020 08:41 |
| URI: | https://fse.studenttheses.ub.rug.nl/id/eprint/21774 |
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