Homework Answers
Add Answer to:
explain please
3. 0.5 m3/s of return air from the room at 24°C DB temperature and...
Air at 80 F db and 50 percent relative humidity is recirculated from a room and mixed with outdoo...
Air at 80 F db and 50 percent relative humidity is recirculated from a room and mixed with outdoor air at 97 F db and 83 F wb at sea level. Determine the mixture dry bulb and wet bulb temperatures if the volume of recirculated air is three times the volume of outdoor air.
Example 5: Ambient air at 38°C db-temperature and 20°C wb- temperature enters an evaporative cooler with...
Example 5: Ambient air at 38°C db-temperature and 20°C wb- temperature enters an evaporative cooler with a dry air mass flow rate of 0.75 kg/s. The pressure is constant at 95 kPa. The air leaves at a db-temperature of 25°C. Calculate (i) the relative humidity of the air at inlet, (ii) the relative humidity of the air at exit, (iii) the rate of flow of water to the cooler, and (iv) the saturation effectiveness of the cooler.
Please show clear working Qn.7. Adiabatic mixing 300 m3/min of fresh air at 30 °C DBT...
Please show clear working
Qn.7. Adiabatic mixing 300 m3/min of fresh air at 30 °C DBT and 50% RH is to be mixed with 800 m3/min of recirculated air at 22 °C DBT and 10 °C wet bulb temperature. Determine the (1) enthalpy, (2) specific volume, (3) relative humidity, (4) dry-bulb temperature and (5) dew point temperature of the mixture. Ans. [(1) 38.24 kJ/kg, (2) 0.849 m/kg (3) 29%, (4) 24.2 °C, (5) 5°C]
b) A cooling coil of an Air Handling Unit has dew-point of 8'C dry-bulb (db) temperature, and outdoor air enters the cooling equipment at 28 C d.b temperature and leaves at 16'C d.b temper...
b) A cooling coil of an Air Handling Unit has dew-point of 8'C dry-bulb (db) temperature, and outdoor air enters the cooling equipment at 28 C d.b temperature and leaves at 16'C d.b temperature with mass flow rate of lkg/s determine: i) the contact factor (CF) ii) the volume flow rate iii) the by-pass factor iv) the sensible heat that removed from the outdoor air (1.5 mark) (1.5 marks) (1 mark) (2.0 marks) c) Explain the difference between "relative humidity...
b) A cooling coil of an Air Handling Unit has dew-point of 8'C dry-bulb (db) temperature, and outdoor air enters the cooling equipment at 28 C d.b temperature and leaves at 16'C d.b temper...
b) A cooling coil of an Air Handling Unit has dew-point of 8'C dry-bulb (db) temperature, and outdoor air enters the cooling equipment at 28 C d.b temperature and leaves at 16'C d.b temperature with mass flow rate of lkg/s determine: i) the contact factor (CF) ii) the volume flow rate iii) the by-pass factor iv) the sensible heat that removed from the outdoor air (1.5 mark) (1.5 marks) (1 mark) (2.0 marks) c) Explain the difference between "relative humidity...
1) In a low-temperature drying operation, air at 60°C and 10% RH is being passed over...
1) In a low-temperature drying operation, air at 60°C and 10% RH is being passed over diced carrots at the rate of 20 kg dry air/s. The constant rate of evaporation of water from the carrots was measured as 0.16 kg moisture/s. Estimate the temperature and RH of the air leaving the dryer. (8 pts) 2) 100 kg of bulghur with an initial moisture content of 80% on wet basis and a surface area of 12 m² is dried in...
Example 5: Ambient air at 38°C db-temperature and 20°C wb- temperature enters an evaporative cooler with a dry air mass flow rate of 0.75 kg/s. The pressure is constant at 95 kPa. The air leaves at a db-temperature of 25°C. Calculate (i) the relative humidity of the air at inlet, (ii) the relative humidity of the air at exit, (iii) the rate of flow of water to the cooler, and (iv) the saturation effectiveness of the cooler.
Please show clear working
Qn.7. Adiabatic mixing 300 m3/min of fresh air at 30 °C DBT and 50% RH is to be mixed with 800 m3/min of recirculated air at 22 °C DBT and 10 °C wet bulb temperature. Determine the (1) enthalpy, (2) specific volume, (3) relative humidity, (4) dry-bulb temperature and (5) dew point temperature of the mixture. Ans. [(1) 38.24 kJ/kg, (2) 0.849 m/kg (3) 29%, (4) 24.2 °C, (5) 5°C]
b) A cooling coil of an Air Handling Unit has dew-point of 8'C dry-bulb (db) temperature, and outdoor air enters the cooling equipment at 28 C d.b temperature and leaves at 16'C d.b temperature with mass flow rate of lkg/s determine: i) the contact factor (CF) ii) the volume flow rate iii) the by-pass factor iv) the sensible heat that removed from the outdoor air (1.5 mark) (1.5 marks) (1 mark) (2.0 marks) c) Explain the difference between "relative humidity...
b) A cooling coil of an Air Handling Unit has dew-point of 8'C dry-bulb (db) temperature, and outdoor air enters the cooling equipment at 28 C d.b temperature and leaves at 16'C d.b temperature with mass flow rate of lkg/s determine: i) the contact factor (CF) ii) the volume flow rate iii) the by-pass factor iv) the sensible heat that removed from the outdoor air (1.5 mark) (1.5 marks) (1 mark) (2.0 marks) c) Explain the difference between "relative humidity...
1) In a low-temperature drying operation, air at 60°C and 10% RH is being passed over diced carrots at the rate of 20 kg dry air/s. The constant rate of evaporation of water from the carrots was measured as 0.16 kg moisture/s. Estimate the temperature and RH of the air leaving the dryer. (8 pts) 2) 100 kg of bulghur with an initial moisture content of 80% on wet basis and a surface area of 12 m² is dried in...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago