Thomas Glatzl

TL;DR: In this article, the authors presented a novel air flow sensor for measuring flow velocities in heating, ventilating, and air conditioning systems, which relies on printed circuit board technology allowing the fabrication of robust, design flexible, and cost-effective devices.

TL;DR: Investigation of non-invasive flow rate measurements in heating, ventilation, and air conditioning (HVAC) systems utilizing thermal transduction instead of commonly used ultrasonic techniques confirms the feasibility of this approach, however with some constraints regarding response time.

TL;DR: In this article, two approaches for measuring fluid quantities like flow velocity over the whole cross section are investigated in this context, one relies on hot-film transduction and stands out for its simplicity, but also shows some severe limitations, which can be circumvented by the second approach based on calorimetric transduction.

TL;DR: A thermal flow sensor designed for measuring air as well as water flow velocities in heating, ventilation, and air conditioning (HVAC) systems and the results of the FEM simulations are compared to measurements in real environments proving the credibility of the model.

TL;DR: A distributed data acquisition system for large-scale AC systems based on low-cost flow sensors implemented by means of standard printed circuit board technology and interconnected via a wireless sensor network is introduced.