National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Možnosti využití bezpilotních prostředků při hodnocení efektivity zateplení budov zemědělského charakteru
Čubík, Josef
The bachelor thesis deals with the measurement of heat leakage in agricultural buildings. Depending on the dimensions of these buildings, it is necessary to consider how to improve the assessment of their heat losses. The most used technology for measuring heat leakage is by using handheld thermal cameras. Considering the large areas and the time required, it is suggested to use an unmanned vehicle with suitable characteristics for this task. However, the measurements were done using a thermal imaging camera, which led to selecting an area under which conditions it is more efficient to use a drone. The difference between internal and external temperatures is essential for a conclusive measurement. Therefore, sheds requiring higher temperatures designed for chicken fattening, were chosen for the experiment. The result showed that heat leakage is a significant problem. All the buildings investigated showed heat loss. The leakage varied depending on the specific type of hall measured and the insulation used. Losses were particularly evident in older buildings with leaks and exposed structural construction. Leakages were mainly in the form of significant thermal bridges.
Diagnostics and acoustics of timber buildings at pictures
David, Jan
Use and benefits of acoustic cameras and thermal cameras
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Impact of local heat leakage on vegetation and participation of non-native species
SVĚTLÍKOVÁ, Petra
Human-induced climate change is a recent phenomenon affecting vegetation structure and functioning. As a proxy of climate change, impact of long-term heat leakage from an underground pipeline on vegetation structure was investigated during a two-year study. Zone above the pipeline was considered as a heat island for non-native, potentially invasive plant species. To test this hypothesis, comparative field and laboratory germination experiments were conducted on closely related invasive and native species. Results of this study provide further evidence that climate change can alter vegetation composition and support invasion of non-native, especially C4 species.

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