Sökning: "Distributed Temperature Sensing"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden Distributed Temperature Sensing.

  1. 1. Distributed Temperature Sensing för kontroll av inläckage i spillvattenledningar

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Sandberg Moa; [2021]
    Nyckelord :DTS; Distributed Temperature Sensing; Infiltration and Inflow; foul sewer; tillskottsvatten; spillvatten; spillvattenledningar; DTS; Distributed Temperature Sensing;

    Sammanfattning : Infiltration and inflow (I/I) are common problems in the foul sewer system. A method to detect I/I that is not commonly used in Sweden is DTS, Distributed Temperature Sensing. DTS is based on continuous measurements of temperature over a predetermined distance in the sewer system. LÄS MER

  3. 2. Distributed Temperature Sensing Using Phase-Sensitive Optical Time Domain Reflectometry

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Simon Ek; [2020]
    Nyckelord :Applied physics; Distributed optical fiber sensing; Rayleigh scattering; OTDR; phase-OTDR; Temperature; Refractive index; Strain; Correlation; RISE; Single mode fiber; SMF; Tillämpad fysik; Distribuerad optisk fibermätning; Rayleigh-spridning; OTDR; phase-OTDR; Temperatur; Brytningsindex; Töjning; RISE; Korrelation; Singelmodfiber; SMF;

    Sammanfattning : This thesis explores and evaluates the temperature measuring capabilities of a phase-sensitive optical time-domain reflectometer (φ-OTDR), which exploits Rayleigh backscattering in normal single mode optical fibers. The device is constructed and its setup explained, and a protocol for making temperature measurements with it is developed. LÄS MER

  4. 3. Classification of leakage detections acquired by airborne thermography of district heating networks

    Master-uppsats, Datorseende; Tekniska högskolan

    Författare :Amanda Berg; [2013]
    Nyckelord :Machine learning; remote sensing; infrared images;

    Sammanfattning : In Sweden and many other northern countries, it is common for heat to be distributed to homes and industries through district heating networks. Such networks consist of pipes buried underground carrying hot water or steam with temperatures in the range of 90-150 C. Due to bad insulation or cracks, heat or water leakages might appear. LÄS MER

  5. 4. Variations and correlations among climatic and environmental variables in Australia using GIS and remote sensing

    Master-uppsats, Institutionen för naturgeografi och kvartärgeologi (INK)

    Författare :Robert Hellmark; [2013]
    Nyckelord :;

    Sammanfattning : This study was performed because of the potential vulnerability to climate change of the Australian continent. For example, global warming may increase the frequency and severity of drought [McAlpine, C.A., Syktus, J. LÄS MER

  7. 5. Comparison of different Line Source Model approaches for analysis of Thermal Response Test in a U-pipe Borehole heat Exchanger.

    Uppsats för yrkesexamina på avancerad nivå, KTH/Tillämpad termodynamik och kylteknik

    Författare :Patricia Monzó; [2011]
    Nyckelord :Borehole Thermal Energy Storage; Borehole Heat Exchanger; Ground Heat Pump System; Thermal Response Test;

    Sammanfattning : Ground Source Heat Pumps (GHSPs) is a relevant application and around 3 million installations are setting up at the beginning of 2010 (IEA ECES Annex 21). The improvements in GSHPs are currently focused on the optimization of the system and the reduction of costs installations. LÄS MER