Ricerc@Sapienza

The paper reports laboratory tests to evaluate the thermal behavior of thermal-magnetic protection circuit-breakers. They are characterized by a rather variable intervention mode according to the environmental and operating thermal conditions. The scope is verify a relationship between the thermal image of the circuit-breaker and the phenomena that lead the actuator mechanism to tripping. The work shows a various types of temperature sensors and location, highlighting their performance, according to these measurement tests.

This study focuses on the development and integrated design over a 24-month period of a high efficiency Energy Harvesting (EH) temperature sensor, based on piezoelectric materials, with applications for the sustainability of smart buildings, structures and infrastructures. The EH sensor, harvests the airflow inside Heating, Ventilation and Air Conditioning (HVAC) systems, using a piezoelectric component and an appropriate customizable aerodynamic fin that takes advantage of specific air flow effects, and is implemented for optimizing the energy consumption in buildings.