geography

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Question 29838

Verified

Geography

Air with a dry bulb temperature of 75 F and a wet bulb temperature of 65 F is at a barometric pressure of 14.2 psia. Using the program PSYCH, find (a) the relative humidity of the air,(b) enthalpy, (c) dew point, (d) humidity ratio, and (e) the mass density of the dry air.

Question 29837

Verified

Geography

5.The inside surface temperature of a window in a room is 40 F (4 C) where the air has a temperature of 72 F (22 C) db, 50 percent relative humidity, and a pressure of 14.696 psia (100 kPa)pressure. Will moisture condense on the window glass?

3. Continue problem 3-5. What is the high relative humidity to avoid condensation

4. Problem 3-9 of the textbook (change barometric pressure to 14.7Psi and use equations rather than PSYCH to calculate them) (50)

Question 29836

Verified

Geography

1. At standard sea level, calculate required moist air properties based on two given properties only using equations and the water saturated temperature and pressure table and then compare your results with psychrometric chart. Do not forget units.

a) Calculate specific volume, relative humidity, and enthalpy of moist air with the dry bulb temperature of 85F and humidity ratio of 0.013 lbmv/lbma. (30)

e) Calculate humidity ratio of moist air with dry bulb temperature of 75F and relative humidity of 45.1% (20)

b) Calculate relative humidity of moist air with the dry bulb temperature of 85F and dew point of 60F. (20)

d) Calculate humidity ratio of moist air with the dry bulb temperature of 75F andenthalpy of 28.01Btu/lbma. (10)

c) Calculate humidity ratio of moist air with the dry bulb temperature of 85F and wet bulb temperature of 70F. (20)

Mark all points with the letter (a to e) on the psychrometric chart and compare the calculated properties with the properties that are obtained from the chart. Give your conclusions. (5x7)

Question 29835

Verified

Geography

Air with a dry bulb temperature of 75 F and a wet bulb temperature of 65 F is at a barometric pressure of 14.2 psia. Using the program PSYCH, find (a) the relative humidity of the air,(b) enthalpy, (c) dew point, (d) humidity ratio, and (e) the mass density of the dry air.

Question 29834

Verified

Geography

The inside surface temperature of a window in a room is 40 F (4 C) where the air has a temperature of 72 F (22 C) db, 50 percent relative humidity, and a pressure of 14.696 psia (100 kPa)pressure. Will moisture condense on the window glass?

3. Continue problem 3-5. What is the high relative humidity to avoid condensation(10)

(10)4. Problem 3-9 of the textbook (change barometric pressure to 14.7Psi and use equations rather than PSYCH to calculate them) (50)

Question 29833

Verified

Geography

1. At standard sea level, calculate required moist air properties based on two given properties only using equations and the water saturated temperature and pressure table and then compare your results with psychrometric chart. Do not forget units.

a) Calculate specific volume, relative humidity, and enthalpy of moist air with the dry bulb temperature of 85F and humidity ratio of 0.013 lbmv/lbma. (30)

b) Calculate relative humidity of moist air with the dry bulb temperature of 85F and dew point of 6OF. (20)

c) Calculate humidity ratio of moist air with the dry bulb temperature of 85F and wet bulb temperature of 70F. (20)

e) Calculate humidity ratio of moist air with dry bulb temperature of 75F andrelative humidity of 45.1% (20)

d) Calculate humidity ratio of moist air with the dry bulb temperature of 75F and enthalpy of 28.01Btu/lbma. (10)

Mark all points with the letter (a to e) on the psychrometric chart and compare thecalculated properties with the properties that are obtained from the chart. Giveyour conclusions. (5x7)

Question 17220

Verified

Geography

. Based on the range of topics covered in Unit 5, discuss one ethical dilemma or debatable issue related to "anthropogenic impacts on the environment" that you find interesting. Present the various aspects of the issue and craft a logical argument for your own opinion. (5 pts)

Include two references beyond those presented in the lectures. One must be a primary source of some kind (i.e., a scientific article, publication from a government website, etc), but the second can be more informal (ex: a news article) if you wish.

Question 17219

Verified

Geography

4. Describe one direct anthropogenic impact related to land use. What biome is affected? What are some important environmental impacts? (5 pts)

Question 17218

Verified

Geography

. What is the fate of municipal waste in the United States? How does this compare to the fate of municipal waste in Sweden and Mexico? What are the key components of a successful municipal waste program? (5 pts)

Question 17217

Verified

Geography

. Describe the process of treating wastewater. What part of the process is the most energy intensive? (5 pts)

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