1222 Air enters a heating section at 100 kPa, 9oC, 45% relative humidity at rate of...

1222

Air enters a heating section at 100 kPa, 9^oC, 45% relative humidity at rate of 10m³/min, and it leaves at 22^oC. Determine (a) the rate of heat transfer (Q^?) in the heating section and (b) the relative humidity (??) at the exit. (c) What-if Scenario: What would the relative humidity at the exit be if the relative humidity of the mixture changed to 75%?

Solutions

Expert Solution

@thanks

Chart 1 for 1st question

Chart 2for 2nd question

samet mamat answered 2 years ago

Next > < Previous

Related Solutions

Air enters an adiabatic compressor at 100 kPa (absolute) and 20 ºC at a rate of...

Air enters an adiabatic compressor at 100 kPa (absolute) and 20 ºC at a rate of 0.075 m3 /s, and it exits at a pressure of 900 kPa (absolute). The compressor has an isentropic efficiency of 70 percent. Neglecting the changes in kinetic and potential energies, determine (a) the exit temperature of air and (b) the power required to drive the compressor.

Air enters an air conditioning unit at 32oC, 80% relative humidity, and with a mass flowrate...

Air enters an air conditioning unit at 32oC, 80% relative humidity, and with a mass flowrate of 12 kg/min. It is to be conditioned to 25oC and 50% relative humidity. In order to do this, part of the moisture in the air must be removed as condensate at 30oC. Be able to draw the path that the atmospheric air takes on the psychrometric chart. Find a. The rate of moisture removal from the air, mw  b. The rate of...

Air enters a window air conditioner at 1 atm, 36oC and 75% relative humidity (??) at...

Air enters a window air conditioner at 1 atm, 36oC and 75% relative humidity (??) at a rate of 12m3/min and it leaves as saturated air at 18oC. Part of the moisture in the air which condenses during the process is also removed at 18oC. Determine (a) the rate of heat (Q?) and (b) moisture removal from the air. (c) What-if Scenario: What would the rate of heat removal be if moist air entered the dehumidifier at 95 kPa instead...

Air enters a 30-cm-diameter cooling section at 1 atm, 35 C, and 60 percent relative humidity...

Air enters a 30-cm-diameter cooling section at 1 atm, 35 C, and 60 percent relative humidity at 120 m/min. The air is cooled by passing it over a cooling coil through which cold water flows. The water experiences a temperature rise of 8 C. The air leaves the cooling section saturated at 20 C. (a) Determine the rate of heat transfer. Round your answer to the nearest tenth. Qout = _____ kJ/min (b) Determine the mass flow rate of...

Air enters the compressor at 100 kPa, 300 K and is compressed to 1000 kPa. The...

Air enters the compressor at 100 kPa, 300 K and is compressed to 1000 kPa. The temperature at the inlet to the first turbine stage is 1400 K. The expansion takes place isentropically in two stages, with reheat to 1400 K between the stages at a constant pressure of 300 kPa. A regenerator having an effectiveness of 100% is also incorporated into the cycle. The turbine and the compressor each have am isentropic efficiency of 80%. Determine the following: (a.)...

Humid air at 300 kPa, 10°C, and 90% relative humidity is heated in a pipe at...

Humid air at 300 kPa, 10°C, and 90% relative humidity is heated in a pipe at constant pressure to 50°C. Calculate the amount of heat, in kJ/kg dry air, required

An air-conditioned zone is at 72°F and 40% relative humidity. The total heating load of the...

An air-conditioned zone is at 72°F and 40% relative humidity. The total heating load of the space is 300,000 Btu/hr, out of which 60,000 Btu/hr is latent heating load. To maintain an appropriate indoor air quality 1000 CFM of outdoor air at 30°F and 80% relative humidity is required. Determine: a) flow rate of supplied air at 25 °F above the zone temperature b) total heating unit load c) amount of water required for the humidifier Please show diagrams in...

Outside air at 10 degC, 1 bar and 40% relative humidity enters an air conditioner operating...

Outside air at 10 degC, 1 bar and 40% relative humidity enters an air conditioner operating at steady state with a mass flow rate of 1.5kg/s. The air is first heated at essentially constant pressure to 30 degC. Liquid water at 15 degC is then injected, bringing the air to 25 degC, 1bar. Determine (a) the rate of heat transfer to the air passing through the heating section, in kJ/s. (b) the rate of water is injected, in kg/s. (c)...

If at 30F the air has 25% relative humidity, what is the relative humidity at 70F...

If at 30F the air has 25% relative humidity, what is the relative humidity at 70F and how much moisture must be added to get it up to 50% relative humidity.

Air enters the compressor of an ideal air standard Brayton cycle at 100 kPa and 290...

Air enters the compressor of an ideal air standard Brayton cycle at 100 kPa and 290 K with a mass flow rate (m⋅) of 6 kg/s. The compressor pressure ratio is 10. The turbine inlet temperature is 1500 K. If a regenerator with an effectiveness of 70% is incorporated in the cycle, determine (a) the thermal efficiency (ηth,Brayton) of the cycle. Use the PG model for air. (b) What-if Scenario: What would the thermal efficiency be if the regenerator effectiveness...

Subjects