Is it possible that during sensible heating process the condition of air reaches a relative humidity of 0% ?
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Is it possible that during sensible heating process the condition of air reaches a relative humidity of 0% ?
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- Is it possible that during sensible cooling process the condition of air reaches a relative humidity of more than 100%.How much heat must be removed in order to cool air at 37oC dry bulb and 40% relative humidity to a temperature of 30oC without any loses in moisture? a.Draw the process on the psychrometric Chart on this page(labelstate 1 and state 2)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.
- How high a relative humidity must be for a 35°C air in order to obtain a saturated air at 18°C by sensible cooling? How much heat is involved? Assume barometric pressure to standard.Elaborate the challenges and importance of humidity and wind conditions in outdoor condition in cryogenic plant| If the relative humidity at a sea-level site is 50% for a dry-bulb temperature of 80°F (26.5°C), calcu- late the moist-air enthalpy.
- How high a relative humidity must a 35°C air have in order to obtain saturated airat 18°C by evaporative cooling? solve with complete diagramQUESTION 1 Water at 60°C leaving a condenser at the rate of 22.5kg/s is sprayed into a natural-draught cooling tower and leaves it at 27°C. Air enters the tower at 1.013bar, 13°C and 50% relative humidity and leaves it at 38°C, saturated. Take Cp for the superheated vapour as 1.86 kJ/kgK. Calculate: 1.1. the air flow rate required in m/s; 1.2. the make-up water required in kg/s.Calculate the relative humidity if the specific humidity is5g/kg and the capacity of the air (saturation specifichumidity) is 25g/kg. Options are :
- What happens when relative humidity (RH) = 100%? a)if the air is continued to be cooled, at what temperature will the saturation point be reached? b)What happens if the air is continued to be cooled below the DBT you just found? (psychrometric chart image)Using a psychrometric diagram, illustrate the heating and humidifier process from the following data. Initially the air was at dry bulb temperature (DBT) 40 ˚C and RH 30%. Air is heated to DBT 90 ˚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)4- Outside air at -7°C and relative humidity of 60%, infiltration air enters the conditioned room at rate of 60 m³/hr. (a) calculate amount of required vapor water to evaporate in each hour to keep relative humidity of 40% and temperature of 18 °C (b) calculate the required heat for humidification.