Essays about: "Low-cost air"
Showing result 1 - 5 of 45 essays containing the words Low-cost air.
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1. Air quality around preschools in Gothenburg: an evaluation of measurement methods
University essay from Göteborgs universitet / Institutionen för biologi och miljövetenskapAbstract : In this study the air quality around four different preschools, chosen to represent different local traffic environments, was measured and the measurement methods used were evaluated. The aim was to compare the information retrieved using different methods, discuss the possible applications of them and finally see if more specific activities, in this case pick-ups and drop-offs, could be seen in the data retrieved. READ MORE
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2. The Development and Testing of Low-Cost Heat Transfer Enhancements for Solar Dryers
University essay from Lunds universitet/Institutionen för energivetenskaperAbstract : In the mountainous regions of Bhutan and Nepal, post-harvest losses cause significant challenges for producers. Open air sun drying is usually used by farmers to preserve their produce. There are many disadvantages to this method. READ MORE
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3. Testing aerosol vertical profiling methods with portable instruments on unmanned and manned aircraft
University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskapAbstract : This thesis employed several portable sensors on board an unmanned aerial vehicle (UAV) and manned aircraft in order to test new methods of measuring vertical profiles of aerosol particles and contribute to knowledge of aerosol distributions in the atmosphere. More data in this area is required to improve atmospheric modelling and future climate scenarios. READ MORE
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4. Mitigating Post-Harvest Losses in Bhutan through Solar Food Drying: Optimization and Analysis
University essay from Lunds universitet/Institutionen för arkitektur och byggd miljö; Lunds universitet/Avdelningen för Energi och byggnadsdesignAbstract : Bhutan is the world’s most mountainous country which comes with some logistical difficulties. Due to slow transportation times and lackluster food preservation are the post-harvest losses high which especially affects the rural parts of Bhutan negatively. READ MORE
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5. Conductive interferences from multiple EC-motor installation : To measure and mitigate harmonics
University essay from Uppsala universitet/Signaler och systemAbstract : Products produced by a Swedish company are requested to be investigated regarding their harmonic and inter-harmonic currents injected into the public supply system to comply with the Swedish standard SS-EN IEC 61000-3-2, Electromagnetic compatibility (EMC). On behalf of Systemair Sweden AB, this bachelor thesis aims firstly to investigate if their product, PAFEC 4225 WH (Air Curtain), complies with standard SS-EN IEC 61000-3-2, and if not, what measures should be taken; and secondly to develop a low-cost instrument for the measurement of harmonics and inter-harmonics according to standard IEC 61000-4-7 related to the requirements on equipment used in standard SS-EN IEC 61000-3-2. READ MORE