How do i calculate the entropy of dry air and humid air? I am trying to...
How do i calculate the entropy of dry air and humid air?
I am trying to do exergy analysis on cooling tower and it requires
me to get the entropy of humid air and dry air. Tried looking
online, cant seem to solve it or find any values
For example, what is the specific entropy for
air at 60% relative humidity at 20 degrees Celcius?
air at 90% relative humidity at 26 degrees Celcius?
dry air at 20-degree Celcius?
Homework Answers
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How do i calculate the entropy of dry air and humid air?
I am trying to...
2) Very humid air enters a dehumidifier at 500 ft^3/min. The air is at a dry-bulb...
2) Very humid air enters a dehumidifier at 500 ft^3/min. The air is at a dry-bulb temperature of 85 degrees F and a relative humidity of 90%. The specific humidity of the mixture must be brought to 30 grains of water per pound mass of air. Assume atmospheric mixture pressure. A) How low must the dry-bulb temperature go to achieve this? B) What is the rate at which energy must be removed to accomplish the reduction in specific humidity, in...
I am trying to figure out the mass flow rate of air required to dry 310...
I am trying to figure out the mass flow rate of air required to
dry 310 kg of water from the product.
Wet product Mass = 400kg Water Mass = 320kg. Temprature = SOC Solid mass = Boky. M=? Humidity Ratio: 0.017kg DRIER Rhz ? Relative hum: 5.7% Enth 22 Euthlapy = 10.7285 Mass = 90 kg Specific Volume water mass= lokg. Speglie Volume = 102m3 Solid mass 2 Soka ng V DRY Product Water Removal rate : 44.26 kq
Problem 7 O/5 points (0%) Humid air at 1 atm, 42 °C dry bulb and 55 % relative humidity is cooled...
Problem 7 O/5 points (0%) Humid air at 1 atm, 42 °C dry bulb and 55 % relative humidity is cooled at constant pressure to a temperature 9 °C below its dew-point temperature. Sketch the psychrometric diagram for the process and determine the heat transfer from the air o kJ/kg dry air Cooling coils T2 φ2 T1 ф! 101.3 kPa i H-4」+'Condensate Condensate removal Now Problem (resets attempts) Resets Remaining: 10 Attempts Remaining: 10 Submit
Problem 7 O/5 points (0%)...
Figure 8.4-1 is provided: Using the Psychrometric chart (Fig 8.4-1 in your Textbook or the attached...
Figure 8.4-1 is provided:
Using the Psychrometric chart (Fig 8.4-1 in your Textbook or the attached copy), estimate the following physical properties of humid air at latm, 40 °C and having a relative humidity hr =20 %. (a) Dew point (Tdp), Wet bulb Temperature (Twb). What is the difference between the two temperatures? (b) Specific enthalpy of the humid air, and the volume of 10kg of the humid air. (C) If the air is humidified in an adiabatic spray tower,...
SKMM 2423 QUESTION 4 a) Cold water flows through a metal pipe, which is not insulated The pipe is loc ated in am am...
SKMM 2423 QUESTION 4 a) Cold water flows through a metal pipe, which is not insulated The pipe is loc ated in am ambient air, which is at a higher temperature and humidity, What do you think would be observed on the surface of the pipe? Describe briefly the reason for this 5 marks) b) A sling psychrometer shows a dry bulb and wet bulb temperature readings of 25°C and 20°C, respectively. The atmospheric pressure is 101 325 kPa. Using...
H1- COOLING TOWER [10 p] 1. What is the wet bulb temperature? How can you measure...
H1- COOLING TOWER [10 p] 1. What is the wet bulb temperature? How can you measure it? Is the wet-bulb temperature greater than dry-bulb temperature? Why? [10 p] 2. A cooling tower is to be designed to cool 8 kg/s of water from 37°C to 29 °C. Entering air is 25 °C and at 30 % relative humidity. Leaving air is 22 °C and at 90% relative humidity. a) Calculate the air flow rate, G. b) Determine the possible lowest...
On the psychrometric chart provided mark clearly the point for air with a dry bulb temperature...
On the psychrometric chart provided mark clearly the point for
air with a
dry bulb temperature of 30oC and a Percentage Saturation
of 80%.
At this air condition, by referring to the same chart, what are the
values of
wet bulb temperature, specific volume, moisture content in kg/kg
(dry air)
and enthalpy.
If the air is air-conditioned to 15oC dry bulb and a
Percentage Saturation of
60, what is the associated enthalpy drop.
NAT BEBE Reduced scale CIBSE psychrometric chart...
I am trying to calculate simple interest for an M115 college course online. To do this...
I am trying to calculate simple interest for an M115 college course online. To do this I take the formula I=Prt. So, to figure out this problem: Assume that an investment of $2000 earns an APR of 6% compounded monthly for 16 months. How much money is in your account after 16 months? I do this: 2000 × 0.06 × 1.33333= 159.9996 Then I add 2,000 That equals 2,159.9996 After I round up, I get 2,160 My computer program says...
HOW DO I FIND NET CREDIT SALES OF A COMPANY? I AM TRYING TO CALCULATE BEST...
HOW DO I FIND NET CREDIT SALES OF A COMPANY? I AM TRYING TO CALCULATE BEST BUY ACCOUNT RECEIVABLE TURNOVER FOR THE YEAR 2018 BUT I CANNOT FIGURE OUT THE NET CREDIT SALES.
3. 1 kg of moist air at mixture pressure 100 kPa has a dry bulb temperature...
3. 1 kg of moist air at mixture pressure 100 kPa has a dry bulb temperature of 30°C and relative humidity of 60%. It is then cooled to a dry bulb temperature of 5°C where it reaches saturation. Without using the psychrometric chart, determine: (35 pts) i) Initial humidity ratio ii) Mass of dry air (kg) iii) Mass of condensate (kg) 720 Tables in SI Units Sal U; X 10 Temp. "C 01 00 ON A 10 11 12 13...
I am trying to figure out the mass flow rate of air required to
dry 310 kg of water from the product.
Wet product Mass = 400kg Water Mass = 320kg. Temprature = SOC Solid mass = Boky. M=? Humidity Ratio: 0.017kg DRIER Rhz ? Relative hum: 5.7% Enth 22 Euthlapy = 10.7285 Mass = 90 kg Specific Volume water mass= lokg. Speglie Volume = 102m3 Solid mass 2 Soka ng V DRY Product Water Removal rate : 44.26 kq
Problem 7 O/5 points (0%) Humid air at 1 atm, 42 °C dry bulb and 55 % relative humidity is cooled at constant pressure to a temperature 9 °C below its dew-point temperature. Sketch the psychrometric diagram for the process and determine the heat transfer from the air o kJ/kg dry air Cooling coils T2 φ2 T1 ф! 101.3 kPa i H-4」+'Condensate Condensate removal Now Problem (resets attempts) Resets Remaining: 10 Attempts Remaining: 10 Submit
Problem 7 O/5 points (0%)...
Figure 8.4-1 is provided:
Using the Psychrometric chart (Fig 8.4-1 in your Textbook or the attached copy), estimate the following physical properties of humid air at latm, 40 °C and having a relative humidity hr =20 %. (a) Dew point (Tdp), Wet bulb Temperature (Twb). What is the difference between the two temperatures? (b) Specific enthalpy of the humid air, and the volume of 10kg of the humid air. (C) If the air is humidified in an adiabatic spray tower,...
SKMM 2423 QUESTION 4 a) Cold water flows through a metal pipe, which is not insulated The pipe is loc ated in am ambient air, which is at a higher temperature and humidity, What do you think would be observed on the surface of the pipe? Describe briefly the reason for this 5 marks) b) A sling psychrometer shows a dry bulb and wet bulb temperature readings of 25°C and 20°C, respectively. The atmospheric pressure is 101 325 kPa. Using...
H1- COOLING TOWER [10 p] 1. What is the wet bulb temperature? How can you measure it? Is the wet-bulb temperature greater than dry-bulb temperature? Why? [10 p] 2. A cooling tower is to be designed to cool 8 kg/s of water from 37°C to 29 °C. Entering air is 25 °C and at 30 % relative humidity. Leaving air is 22 °C and at 90% relative humidity. a) Calculate the air flow rate, G. b) Determine the possible lowest...
On the psychrometric chart provided mark clearly the point for
air with a
dry bulb temperature of 30oC and a Percentage Saturation
of 80%.
At this air condition, by referring to the same chart, what are the
values of
wet bulb temperature, specific volume, moisture content in kg/kg
(dry air)
and enthalpy.
If the air is air-conditioned to 15oC dry bulb and a
Percentage Saturation of
60, what is the associated enthalpy drop.
NAT BEBE Reduced scale CIBSE psychrometric chart...
3. 1 kg of moist air at mixture pressure 100 kPa has a dry bulb temperature of 30°C and relative humidity of 60%. It is then cooled to a dry bulb temperature of 5°C where it reaches saturation. Without using the psychrometric chart, determine: (35 pts) i) Initial humidity ratio ii) Mass of dry air (kg) iii) Mass of condensate (kg) 720 Tables in SI Units Sal U; X 10 Temp. "C 01 00 ON A 10 11 12 13...
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