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Calorimetric flow sensors are easy to fabricate and can be tailored in length if appropriate technologies are used. Such long devices can be favorably employed, e.g., in ventilation systems to judge the distribution of the mass flow. This paper presents a flow sensor based on Ag-Ni thermopiles printed on a flexible PET substrate. It reviews the basic sensor principle and its feedback controlled operation...
Air conditioning systems need permanent monitoring of the mass and energy flows in the air ducts to assess their proper operation and detect and correct changes that may occur over time. This is a prerequisite for energy efficiency and demanded by recent legislation like the Energy Performance of Buildings Directive issued by the European Union. Such distributed monitoring systems require low-cost...
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