Measuring air flow in an HVAC duct can be a tricky business. Paddle wheel and turbine flow meters introduce not only resistance but maintenance issue due to accumulated dust and debris.

His experiments in air duct flow measurements, which previously delved into ultrasonic flow measurement, led him to try mechanical means. That calls for some kind of turbine producing a signal ...

air flows through the duct, streaming across the wheel. To understand how this reduces drag, we need to look at two aspects: The terrible things that spinning wheels and tires do to the air, and how ...

One-dimensional duct showing control volume ... the difference between the pressure sensed by the Pitot tube and the pressure of the surrounding air flow, it can give a very accurate measure of the ...

If you're concerned about reducing allergens in your home, improving your HVAC's efficiency and maintaining good indoor air ...

An air duct between the air filter housing and the throttle body; Between two rubber or plastic air filter housing ducts or air intake snorkels (which look like accordion pleats). With disposable ...

Air flow sensors are inserted into a duct or pipe through an access hole to measure air velocity. In other instances a capture hood is used to measure volumetric flow from a grill or exhaust diffuser.

Duct heaters are used to heat moving gas streams. They are installed in the middle of a moving air / gas stream in order to provide forced flow heat convection. A duct heater can also be used to ...

Living in Dubai, where temperatures can soar and air conditioning is a year-round necessity, having a clean and efficient AC ...

The triangular inlet design was created by the National Advisory Committee for Aeronautic in the Forties but have since appeared on countless race cars.

AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, PR China Laboratory of Flexible Electronics Technology, Tsinghua University, Beijing 100084, PR China The peculiar ...