Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN: 9781305578296
Author: John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher: Cengage Learning
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Chapter 34, Problem 21RQ
Describe the difference between an evaporative and an atomizing humidifier.
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this is answer to a vibrations question. in the last part it states an assumption of x2, im not sure where this assumption comes from. an answer would be greatly appreciated
Please answer with the sketches.
The beam is made of elastic perfectly plastic material. Determine the shape factor for the cross
section of the beam (Figure Q3). [Take σy = 250 MPa, yNA = 110.94 mm, I = 78.08 x 106 mm²]
y
25 mm
75 mm
I
25 mm
200 mm
25 mm
125
Figure Q3
Chapter 34 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 34 - List five different sources of indoor air...Ch. 34 - ASHRAE Standard "Ventilation for Acceptable Indoor...Ch. 34 - Radon is a (n) _____, _____, and _____gas.Ch. 34 - Three different biological contaminants are...Ch. 34 - What are two substances molds need in order to...Ch. 34 - Three methods of controlling indoor air...Ch. 34 - If radon gas is suspected, what should be done?Ch. 34 - How does ventilation help to improve air quality?Ch. 34 - Three general types of air cleaners are_______....Ch. 34 - True or False: Carbon monoxide is produced by...
Ch. 34 - Describe the difference between absorption and...Ch. 34 - True or False: Fiberglass filter media is...Ch. 34 - An electrostatic precipitator is the same as A. an...Ch. 34 - The purifier ingredient in an activated charcoal...Ch. 34 - Ion generators_______particles m an area. A....Ch. 34 - The relative humidity in heated homes is generally...Ch. 34 - The recommended relative humidity for a home is...Ch. 34 - True or False: Some humidifiers have their own...Ch. 34 - Static electricity is more commonly a problem when...Ch. 34 - The plenum-mounted humidifier is installed in the...Ch. 34 - Describe the difference between an evaporative and...Ch. 34 - Why is it essential for the furnace to be...
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- A beam of the cross section shown in Figure Q3 is made of a steel that is assumed to be elastic- perfectectly plastic material with E = 200 GPa and σy = 240 MPa. Determine: i. The shape factor of the cross section ii. The bending moment at which the plastic zones at the top and bottom of the bar are 30 mm thick. 15 mm 30 mm 15 mm 30 mm 30 mm 30 mmarrow_forwardA torque of magnitude T = 12 kNm is applied to the end of a tank containing compressed air under a pressure of 8 MPa (Figure Q1). The tank has a 180 mm inner diameter and a 12 mm wall thickness. As a result of several tensile tests, it has been found that tensile yeild strength is σy = 250 MPa for thr grade of steel used. Determine the factor of safety with respect to yeild, using: (a) The maximum shearing stress theory (b) The maximum distortion energy theory T Figure Q1arrow_forwardAn external pressure of 12 MPa is applied to a closed-end thick cylinder of internal diameter 150 mm and external diameter 300 mm. If the maximum hoop stress on the inner surface of the cylinder is limited to 30 MPa: (a) What maximum internal pressure can be applied to the cylinder? (b) Sketch the variation of hoop and radial stresses across the cylinder wall. (c) What will be the change in the outside diameter when the above pressure is applied? [Take E = 207 GPa and v = 0.29]arrow_forward
- so A 4 I need a detailed drawing with explanation し i need drawing in solution motion is as follows; 1- Dwell 45°. Plot the displacement diagram for a cam with flat follower of width 14 mm. The required 2- Rising 60 mm in 90° with Simple Harmonic Motion. 3- Dwell 90°. 4- Falling 60 mm for 90° with Simple Harmonic Motion. 5- Dwell 45°. cam is 50 mm. Then design the cam profile to give the above displacement diagram if the minimum circle diameter of the か ---2-125 750 x2.01 98Parrow_forwardFigure below shows a link mechanism in which the link OA rotates uniformly in an anticlockwise direction at 10 rad/s. the lengths of the various links are OA=75 mm, OB-150 mm, BC=150 mm, CD-300 mm. Determine for the position shown, the sliding velocity of D. A 45 B Space Diagram o NTS (Not-to-Scale) C Darrow_forwardI need a detailed drawing with explanation so Solle 4 يكا Pax Pu + 96** motion is as follows; 1- Dwell 45°. Plot the displacement diagram for a cam with flat follower of width 14 mm. The required 2- Rising 60 mm in 90° with Simple Harmonic Motion. 3- Dwell 90°. 4- Falling 60 mm for 90° with Simple Harmonic Motion. 5- Dwell 45°. cam is 50 mm. Then design the cam profile to give the above displacement diagram if the minimum circle diameter of the 55 ---20125 750 X 2.01 1989arrow_forward
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