Supply flow into an occupied space is generally a mixture of return air and fresh outdoor air that has been filtered and then conditioned through heating or cooling coils. This volume of supply air ...

Room pressures can be measured using a micromanometer to determine if one room is at a different pressure than an adjacent room or hallway. Isolation rooms in hospitals, for example, maintain a ...

Problem: build a combined anemometer and wind vane where the pivots for both sensors are coaxial. Solution: turn an old universal motor into a step-wise potentiometer for the wind vane, and then pull ...