Information for Lerwick Residents “Thermal drone surveys are a clear improvement on previous asset management tools. The drone flies at an altitude of 90 meters above ground, and quiet propellers ensure near silence. High-intensity anti-collision beacons mean you will see it more than you will hear it. It is equipped with numerous safety systems, including dual batteries and multiple sensors that feed real- time information back to the pilot. The whole operation has been entirely risk assessed to mitigate all hazards and safety risks. A crew of two operate the drone: the Remote Pilot has complete control of the aircraft and systems, and an observer monitors the drone’s flight path at all times in the air. The thermal sensor on the drone does not take ordinary pictures; it measures 7.5 - 14 µm wavelength electromagnetic radiation. The software converts radiation intensity to a temperature reading, the temperature values are then assigned a color, and this is what generates the thermal image we can interpret. The survey takes place at night and should require no more than two nights’ flying. Environmental conditions must be ideal to guarantee good results. The optimum situation is no rain or wet surfaces, low wind speeds, and low relative humidity. It can therefore be challenging to plan exactly when the survey will take place, but we provide continuous updates about planned and completed flights.”
inspections,” explains DBDH Business Development Manager Morten Jordt Duedahl. He adds: “This successful matchmaking achieved three things: we helped cut down on CO 2 emissions, we supported exports by one of our members, and we improved district heating in a cold, wet area. As our mission is to promote district energy for sustainable city transformation, we are delighted with this outcome.” Information for Lerwick residents “Thermal drone surveys are a clear improvement on previous asset management tools. The drone flies at an altitude of 90 meters above ground, and quiet propellers ensure near silence. High- intensity anti-collision beacons mean you will see it more than you will hear it. It is equipped with numerous safety systems, including dual batteries and multiple sensors that feed real-time informa- tion back to the pilot. The whole operation has been entirely risk assessed to mitigate all hazards and safety risks. A crew of two operate the drone: the Remote Pilot has complete control of the aircraft and systems, and an observer monitors the drone’s flight path at all times in the air. The thermal sensor on the drone does not take ordinary pictures; it measures 7.5 - 14 µm wavelength electromagnetic radiation. The software converts radiation intensity to a temperature reading, the temperature values are then assigned a color, and this is what generates the thermal image we can interpret. The survey takes place at night and should require no more than two nights’ flying. Environmental conditions must be ideal to guar- antee good results. The optimum situation is no rain or wet surfac- es, low wind speeds, and low relative humidity. It can therefore be challenging to plan exactly when the survey will take place, but we provide continuous updates about planned and completed flights.” Low carbon waste to energy heat Shetland Heat Energy & Power Ltd. provides low carbon, waste to energy heat to Lerwick in the Shetland Islands, North of Scotland. The district heating company supplies hospitals, leisure centers, local government buildings, care homes, commercial entities, and more than a thousand domestic homes. https://sheap-Ltd.co.uk/ Over 400 leaks found… all over the world Danish Drone Systems’ specialist technology delivers 100% ther- mal coverage and shows the complete picture of a district heating network. In contrast, traditional inspection methods (handheld or car-mounted infrared camera on the ground) only cover around 50-70%. As well as providing complete visibility of an entire net- work, the thermal drone survey also delivers greater precision. It pinpoints leaks and points of interest (including minor leaks on return pipes) within a meter. Built on Danish high-tech know-how, the company delivers ther- mal drone inspections of district heating networks worldwide. It operates in every landscape and terrain – including inaccessi- ble locations, often in collaboration with professional local drone pilots. The Shetland Island survey was carried out by local drone pilot Shetland Flyer Aerial Media, who delivered the thermal data to Denmark for processing and analysis. To date, Drone Systems has successfully inspected over 16,000 kilo- metres (9,942 miles) of district heating network pipelines. During this work Drone Systems has identified and located more than 1,400 leaks, 4,800 emerging leaks, and 2,900 components (above 5 degrees in delta temperature), all with notable heat loss – damag- ing both the economy and the climate.
For further information please contact: Gina Nielsen, Gina.Nielsen@dronesystems.dk
30 HOTCOOL no.4 2021
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