Lab 3-4.docx - ABE 225 Introduction to Bioenvironmental...

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ABE 225 Introduction to Bioenvironmental Engineering Prof. Yuanhui Zhang ABE 225 Introduction to Bioenvironmental Engineering Lab 3: Heat Transfer Through an Air Cabin and Lab 4: Determination of Ventilation Rate in a Ventilated Airspace March 1, 2016 Submitted by Group name: Group B-2 Group member: Alex Brauman Nathaniel Bidner 1
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ABE 225 Introduction to Bioenvironmental Engineering Prof. Yuanhui Zhang University of Illinois at Urbana - Champaign, 2016 Department of Agricultural & Biological Engineering Abstract This lab demonstrates potential methods for calculating heat transfer and ventilation in a mockup aircraft cabin. It also demonstrated some of the potential pitfalls in using these methods and what factors you have to take into account when calculating real-world RSI values and measurements based on these values. There were many sources of error and simplifications that affected our values, but there were still a lot of useful information to learn from this lab. Introduction These labs provide heat and ventilation rates for a mockup of a Boeing 767 cabin. We used the properties of the cabin and the heating and ventilation systems to determine a lot of information about this cabin and demonstrate the equations we learned in class. Objectives Determine the R values and heat transfer rates of materials in the aircraft cabin and compare them to literature values. Determine the ventilation rate of airplane cabin mockup based on pollutants, moisture, and temperature balance. Apply mass and energy conservation laws in real life. Learn to conduct tracer gas studies and operate a hot-wire anemometer. Materials & methods Materials: Lab 3 Two 1,500 W electrical heaters 2 “T-type” thermocouples IO Tech Personal DAQ 56 data acquisition unit 2
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ABE 225 Introduction to Bioenvironmental Engineering Prof. Yuanhui Zhang DAQ View software Raytek infrared noncontact thermometer (Raytek ST30) Thermal Imager Power meter measuring the heater capacity (in kW) Lab 4 Boeing airplane cabin mock-up 28 heating pads attached to mannequins, each is 53 W (total: 28x53 = 1484W) Carbon dioxide tank, adjusted to a flow rate of 4 L/min 1 portable fan Hand held anemometer/thermometer CO2 meter and desktop computer Stopwatch and tape measure Methods: Lab 3: Determine the surface area and materials of all surfaces of the cabin. Turn on the heaters. Record the temperature every 10 minutes of both the interior and exterior surfaces of the cabin. Take thermal images of the exterior of the cabin.
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  • Spring '18
  • Yuanhui Zhang
  • Heat, Heat Transfer, Abe, Prof. Yuanhui Zhang, Bioenvironmental Engineering

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