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Found 3 essays matching the above criteria.

  1. 1. Air-quality sensor with 10-years lifespan

    University essay from Högskolan Kristianstad/Fakulteten för naturvetenskap

    Author : Rilind Hasanaj; Ahmed Abuhemidan; [2019]
    Keywords : Air-quality sensor; Z-wave; carbon dioxide sensor; VOC sensor;

    Abstract : Sensors with very low power consumption are required so that they can last a long time without the need to replace the batteries very often. Low power sensors can save significant cost and time incurred in battery replacement, especially in establishments and organizations that span over several buildings, floors and rooms. READ MORE

  3. 2. Placing VOC Sensors forAssessing Air Quality : A CFD Study of Indoor VOC Distribution

    University essay from KTH/Tillämpad termodynamik och kylteknik

    Author : Sara Högdahl; [2018]
    Keywords : ;

    Abstract : The Swedish Obligatory Ventilation Control (OVK) was established to ensure that ventilation systemsare clean and work according to design. The control system of today is however not perfect, and thereare many aspects of OVK which could be approached differently for improved efficiency and occupanthealth. READ MORE

  4. 3. Snow cover dynamics and plant phenology documentation using digital camera images and their relation with CO2-fluxes at Stordalen mire, northern Sweden

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Susanne Svensson; [2005]
    Keywords : naturgeografi; climatology; cartography; carbon flux; climate monitoring; physical geography; snowmelt; pedology; geomorphology; geomorfologi; marklära; kartografi; klimatologi; Earth and Environmental Sciences;

    Abstract : This report investigates the utilization of digital camera images (DCIs), sensitive in the visible part of the spectrum, for documentation of seasonal and inter-annual variations in snow cover and plant phenology. The DCIs used were transformed to orthographic images (ortho-image) from ordinary oblique DCIs taken between January 2001 and December 2003 at a sub- arctic mire (Stordalen) in northern Sweden. READ MORE