Refrigeration and Air-Conditioning, 2008, CP Arora Problem 14.2 14.2 A sample of moist air has a dry bulb temperature of 43°C and a wet bulb temperature of 29°C. Calculate the following without making use of the psychrometric chart: (a) Partial pressure of water vapour. (c) Relative humidity. (e) Humid specific heat. (g) Degree of saturation. (b) Specific humidity. (d) Dew point temperature. (f) Enthalpy. (h) Sigma heat function.

Refrigeration and Air-Conditioning, 2008, CP Arora Problem 14.2 14.2 A sample of moist air has a dry bulb temperature of 43°C and a wet bulb temperature of 29°C. Calculate the following without making use of the psychrometric chart: (a) Partial pressure of water vapour. (c) Relative humidity. (e) Humid specific heat. (g) Degree of saturation. (b) Specific humidity. (d) Dew point temperature. (f) Enthalpy. (h) Sigma heat function.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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RH2 = 43% What is the specific humidity of the air stream #1, w1 (lbm H2O/lbm air)? What is the specific humidity of the air stream #2, w2 (lbm H2O/lbm air)? What is mass flow rate of dry air in stream #1 (lbm/s)? What is mass flow rate of dry air in stream #2 (lbm/s)? What is the relative humidity of the outlet (%)?
Using a psychrometric diagram, describe the heating and humidification process and the following data. Initially, the air at dry bulb temperature (DBT) 25 ° C and RH55% The air is heated to DBT 75 C. The heated air is then flowed through a humidifier to increase the RH to 25%. For this process, calculate, a Change in the absolute humidity of the air from initial to final conditions air b. The change in air enthalpy from initial to final conditions = (kg of water / kg (kJ / kg air
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Dry air inlet temperature 23.9 (t1) Wet air inlet temperature 20.5 (t2) Dry air outlet temperature 24.3 (13) Wet air outlet temperature 23.1 (14) Inlet (A) Outlet (B) Set 2 Set 1 T [°C] Inlet (A) Outlet (B) (b) By using the psychrometric chart, fill up the table below for mass balance. Set 1 v[m/kg dry w[kg/kg dry air] Inlet (A) Outlet (B) 0.0183 0.017 [kg/kg dry air] 61 Set 2 T [°C] 68 24.2 20.8 25.4 24.5 aur] 0.86 v[m³/kg dry air m (c) By using the psychrometric chart, fill up the table below for energy balance. het [kJ/kg dry air] het [kJ/kg dry air [kg dry air/s] 0.0586 m [kg dry air/s] 6
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Using a psychrometric diagram, describe the heating and humidification process from the following data. Initially the air was at dry bulb temperature (DBT) 30 ° C and RH 35%. The air is heated to DBT 80 ° C. The heated air is then flowed through a humidifier to increase the RH to 25%. For this process, calculate: a. Change in absolute humidity of air from initial to final conditions = ... (kg water / kg air) b. The change in enthalpy of air from initial to final conditions = ... (KJ / Kg of air)
Using a psychrometric diagram, describe the heating and humidification process from the following data. Initially the air was at a dry bulb temperature (DBT) of 30 ° C and RH60%. The air is heated to DBT 80 ° C. The heated air is then flowed through a humidifier to increase the RH to 25%. For this process, calculate,a. Change in absolute humidity of air from initial to final conditions = (kg water / kg air).b. The change in air enthalpy from initial to final conditions. = (kJ / kg air)