Which of the following statements is true regarding the energy-recovery wheel?
A) The energy-recovery wheel does not allow more indoor air into the system without significantly increasing operating costs.
B) The energy-recovery wheel does not rotate when exiting air passes through it.
C) The energy-recovery wheel mixes outdoor and exhaust air as the air streams pass through it.
D) The energy-recovery wheel is configured so that exhaust air exits the top and outdoor air enters the bottom.
D
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Problem 1.67 Link BC is 6 mm thick and is made of a steel with a 450-MPa ultimate strength in tension. What should be its width w if the structure shown is being designed to support a 20-kN load P with a factor of safety of 3?
Capturing gases and odors using gas-phase filtration occurs through a process known as _____.
a. adsorption b. mitigation c. particle capture d. sterilization
A 67° angle is called what type of angle?
Fill in the blank(s) with the appropriate word(s).
When testing an ECT sensor on a vehicle, a digital multimeter can be used and the signal wire back probed. What setting should the technician use to test the sensor?
A) Ohms B) Amperes C) DC volts D) AC volts