国产自慰在线资源|国产精品亚洲中文欧美|亚洲欧美日韩精品专区|在线免费国产视频一区二区|免费一级A级高清毛片人妻|亚洲欧美在线制服丝袜国产|伊人久久大杳蕉夜夜揉夜夜爽|最新哺乳亚洲AV日韩AV二区

Description

The Armfield Axial Fan Demonstration Unit is fitted with electronic sensors to measure the pressure head developed across the fan, the pressure across the orifice plate (and hence the flow rate), the rotational speed of the fan and the air temperature.

The fan speed is controlled by modulated dc supply complete with current sensing to enable the power drawn by the fan to be measured.

The Armfield axial fan demonstration unit is mounted on a stainless steel plinth. Transparent air inlet and air outlet ducts allow the fan construction to be clearly observed. A manually operated adjustable aperture allows the air flow rate to be varied.

A calibrated orifice plate is used on the discharge to measure the air flow rate. Electronic sensors measure the pressure head developed across the fan, the pressure across the orifice plate (and thus the flow rate), the rotational speed of the fan and the air temperature.

The fan speed is controlled by modulated DC supply complete with current sensing to allow the power drawn by the fan to be measured.

Demonstration Capabilities

• Measurement of inherent-speed machine performance in terms of static and total pressures, rotor speed and motor input power as a function of inlet flow
• Measurement of overall efficiency and estimation of impeller power efficiency
• Measurement of performance at constant speeds
• Introduction to similarity laws for scale-up
• Comparison of student calculations with computer results

Dimensions

Length: 0.85m

Width: 0.45m

Height: 0.95m