uring humidification process, __________ increases. (A) Wet bulb temperature (B) Relative humidity (C) Dry bulb temperature (D) Specific humidity
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A: Solution:
During humidification process, __________ increases.
- (A) Wet bulb temperature
- (B) Relative humidity
- (C) Dry bulb temperature
- (D) Specific humidity
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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 (%)?what is the relationship and formula of relative humidity and temperature?ASHRAE standard 62.2 states that the minimum acceptable rate of airflow into and out of a room is 15cfm (cubic feet per minute). If air is supplied at 68°F with a relative humidity of 45%, how many gallons of water (minimum) must be added to a portable room humidifier before you go to sleep if you would like to maintain the room at 65% humidity for 7 hours?
- JUST NEED QUESTION 2 NOT 1 1. Air at a dry bulb temperature (dbt) of 40 oC and a relative humidity of 30% is heated to a dbt of 80 oC. Using psychrometric chart to determine: a. The change in moisture content per kg of dry air. b. The change in enthalpy from the initial unheated air to heated air. 2. The previous heated air is then conveyed through a humidifier to raise its relative humidity to 25%. Using psychrometric chart to determine: a. The change in moisture content per kg of dry air. b. The change in enthalpy from the heated air to final humidified air. Hint: the humidifier changes the humidity ratio without changing dry bulb temperature.PLEASE SOLVE ANY TWO QUESTIONS. a) Air at 80°F DB and 50% RH is cooled and dehumidified to 50°F and 100% RH. What is the rate of latent heat removed from 1,000 CFM of air? b) If 500 CFM of outside air at 96°F DB and 76°F WB is mixed with 1,500 CFM of return air at 80°F DB and 50% RH, what is the specific humidity of the mixed air stream? c) A room has a sensible cooling load of 32,000 Btu/hr. The room latent load is 12,000 Btu/hr. What sensible heat factor results from these loads? d) Air at 40°F DB enters a furnace with a heating capacity of 50,000 Btu/hr. If the temperature of the air is increased to 90°F, what is the air flow rate supplied to the furnace? e) Find the enthalpy of air whose dry bulb temperature is 76°F with a humidity ratio of 60 grains/lb f) Air at 30°F DB and 80% RH is heated to 75°F DB by passing it over a heating coil (i.e. sensible heating only) What is the wet-bulb temperature of the heated air?Air at 24 °C dry-bulg and 15 °C wet-bulb enters a humidifier and leaves at 41 °C dry-bulb and 21 °C wet-bulb. How much moisture has been added per kilogram of dry air?
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