Measurements made on a newly installed air-handling system were: 20 rev/s fan speed, 2.4 m³/s airflow rate, 340 Pa fan discharge pressure, and 1.8 kw supplied to the motor. These measurements were made with an air temperature of 20°C, and the system is eventually to operate with air at a temperature of 40°C. If the fan speed remains at 20 rev/s, determine the operating values of:
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Measurements made on a newly installed air-handling system were: 20 rev/s fan speed, 2.4 m³/s airflow...
5. (10 points) A fan is to produce a constant air speed of 40 m/s throughout the 3 m diameter pipe loop shown below. The system is operated with the air at 22°C and 101.33 kPa absolute (Mw=28.97, u=1.846x10 kg/m-s). The 3-m diameter pipes are smooth, and each of the four 90° bends has a loss coefficient of 0.3. Determine the power (kW) that the fan must provide to the air. Values for L2 and L are 20 m and...
summarizr the followung info and write them in your own words and break them into different key points. 6.5 Metering Chamber: 6.5.1 The minimum size of the metering box is governed by the metering area required to obtain a representative test area for the specimen (see 7.2) and for maintenance of reasonable test accuracy. For example, for specimens incorporating air spaces or stud spaces, the metering area shall span an integral number of spaces (see 5.5). The depth of...
summatize the following info and break them into differeng key points. write them in yojr own words apartus 6.1 Introduction—The design of a successful hot box appa- ratus is influenced by many factors. Before beginning the design of an apparatus meeting this standard, the designer shall review the discussion on the limitations and accuracy, Section 13, discussions of the energy flows in a hot box, Annex A2, the metering box wall loss flow, Annex A3, and flanking loss, Annex...