Anemometer is the instrument we use to measure wind speed. Use the hole punch to make one hole in the side of four of the paper cups (all roughly in the same place) and four equally-spaced holes ...

As HVACR technicians, job number one is ensuring the comfort of the customer. For an HVACR system, it is effective heat transfer and efficient conditioning in all intended zones of the system.

A recent Design Idea presents a circuit to measure an airflow rate up to 2000 fpm using two transistors in a Darlington configuration. One transistor works as a self-heated thermal sensor and the ...