Answer the following statement(s) true (T) or false (F)
1. A series circuit has multiple paths for current flow.
2. Total resistance in a series circuit is equal to the sum of all resistors.
3. Voltage is determined by observing the direction of current flow.
4. Voltages add for power sources connected in series aiding.
1. FALSE
2. TRUE
3. FALSE
4. TRUE
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Formaldehyde is emitted from a furniture manufacturing plant at 20 ppm. The process only operates 12 hours per week over 4 different days. The exhaust gas temperature is 25°C. What type of control system would you recommend? You are an engineer for Wood Spec, Inc., a low-cost furniture manufacturer. The owners are planning to significantly expanding their manufacturing facility in a rural area of the Northwest. The U.S. EPA has asked them to estimate the plant expansion effects on local air quality. The plant expansion will process 3 million m2 of particle board (std, UF) daily. You, the engineer, are given the following information based on previous sampling events:
o Exhaust gas temperature from the stack is on average 300 K and exits the stack at 145 m/s.
o Typical meteorological conditions were obtained from a local weather station:
- Strong solar radiation
- Ambient temperature = 299 K
- Wind speed at 10 m = 2 m/s
- Actual lapse rate = -0.015 K/m.
o Both formaldehyde and particulates are a concern. Use emission factors for the most conservative estimate of formaldehyde emissions. Also, assume that 1 mole of formaldehyde reacts in the atmosphere to form 1 mole of ozone.
o The data in Table 5.26 were collected from meteorological stack testing, o Calculate the emission rate of formaldehyde and total particulate matter (PM) in mg/s.
Note: Assume the height of the physical stack is 10 meters
a. What region of the respiratory system is most likely to be affected by each type of PM?
i. Chips
ii. Sawdust
iii. Fine PM
b. What region is least likely to be affected by each type of PM?
c. What is the concentration of formaldehyde in units of PPM in the exhaust stack prior to being emitted into the atmosphere?
d. What is the permissible exposure level (PEL) for formaldehyde?
e. Does this concentration exceed the PEL for workers in the building?
f. How high will the plume rise from the stack in meters?
g. Use Excel to determine the distance in kilometers from the stack will the plume concentration at ground level be greatest (maximum)?
h. What is the maximum predicted ground-level concentration of formaldehyde and total PM assuming these pollutants are reflected?
i. The background concentration of PM is 10 ?g/m3 and ozone is 45 ?g/m3.
Will this location remain in compliance with the United States NAAQS PM and ozone standards based upon the maximum predicted concentration of the pollutants?
What will be an ideal response?
Label the following furnace
The amount of mass that flows through something per unit of time is called
a. mass moment of inertia b. volumetric flow rate c. mass flow rate d. none of the above
The advantage of using laser technology is the greater amount of bandwidth available and, most important, the free ________ available
Fill in the blank(s) with correct word