This paper presents an airflow energy harvester in
a local exhaust ventilation (LEV) system based on differential
pressure between the inside and outside of the system to power the
airflow controller of the system. This helps to realize a distributed
system with fewer wiring requirements, which helps to reduce
system costs ...
This paper presents an airflow energy harvester in
a local exhaust ventilation (LEV) system based on differential
pressure between the inside and outside of the system to power the
airflow controller of the system. This helps to realize a distributed
system with fewer wiring requirements, which helps to reduce
system costs and installation complexity. The energy requirement
of the airflow controller was determined and an appropriate
turbine design was selected. A prototype was built and tested with
an airflow speed of 3.5–16 m/s in a test rig. The energy harvester
can generate 0.2 – 20 W of power in the tested conditions, which is
sufficient to meet the energy requirement of the LEV system.