Q.3 Saturated ambient air with a db-temperature of 5°C and a mass flow rate of 0.9 kg/s is dividedinto two streams. One stream passes through a heating section and leaves it with a relative humidityof 25%. The conditions of the other stream that bypasses the heater remains unchanged. The twostreams are then mixed to produce the supply air stream at 24°C. The pressure is constantat 101.3 kPa. Determine (i) heat input by the heating coil, and (ii) the mass flow of airthrough the bypass section.

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Answered: Q.3 Saturated ambient air with a…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

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Moist air at 30oC and 50% relative humidity is cooled to 10oC. If the air has a volumetric flow rate of 20m3/min, and condensate water at 10oC is collected, draw the cycle on the attached chart and determine: c) The rate of heat required to cool the air, in KW.
Air is to be conditioned to have a final humidity ratio of 0.0194. If 50 cu. meter/min of this saturated air enters the conditioner at 15.64 C and increases its temperature by 20.35.C, using the thermodynamic properties of air formula determine the: NOTE: DO NOT USE PSYCHROMETRIC CHART!!! -Draw the schematic diagram of the problem -the total amount of heat transferred in kW -amount of latent heat added in kW -the sensible heat ratio.
Solve all please i give thumb up? Outside air at 15°C and 20% relative humidity is admitted at a volumetric rate of 15m³/min into an air conditioning system composed of a simple heating section followed by a humidification section, which must supply air at 27 °C and 65% relative humidity. The airflow temperature between the heating and humidifying sections is 22°C and the entire air conditioner operates at 70kPa. Determine, using calculations: (a) the rate of heat supply to the heating section, in kW, is ______. (b) the wet bulb temperature of the air after the heating section, in °C, is ______. (c) the mass flow rate of steam in the humidification section, in g/s, is ______. (d) the temperature of the steam injected into the humidification section for a steam pressure of 200kPa, in °C, is _______
300 kPa pressure and 20 oC water flowing with a mass flow rate of 2 kg / s,300 kPa pressure and 300 oC mixed with superheated steam during mixing. if it comes out at 65 oC temperature from the mixing chamber;a. Draw the system schematically and examine it.b. Determine the initial mass flow rate of the superheated steam.
Q5/ A small auditorium is required to be maintained at 22°C dry bulb temperature and 70% relative humidity. The ambient conditions are at 30°C dry bulb temperature and 75% relative humidity. The amount of free air circulated is 200m³/min. The required conditions are achieved by first cooling
Moist air at 21 C° DBT and 15 C° WBT and standard atmospheric pressure is humid by water spray. If for each one kg of dry air passing through the duct 0.002 kg of wa 100 C° is injected and totally evaporated. Draw the psychometric and schematic figu process and calculate for the air leaving the a- The moisture content. spray chamber: b- The enthalpy c- Dry bulb temperature.
5. Dry winter atmospheric air at latm, 8°C and 50% bumidity enter an HVAC system at a rate of 10m/hr, where it is isobarically conditioned to 21°C, 50% humidity. A water line supplies saturated water vapour. Determine heating or cooling rate required to accomplish this process. Also determine the rate wat which water must be supplied in the system in KW. Take heat of vaporization of water to be 2539.9kJ/kg. Note IKJ/S = 1KW
An air conditioning plant supplies air to a room at a rate of 1.26 kg/s, the supply air being made up of equal parts by weight of outdoor and recirculated air. The mixed air passes through a cooler coil fitted with a by-pass duct, face-and-by-pass dampers being used for humidity control. The air then passes through an after-heater and supply fan. In a test on the plant, the following conditions were measured: a. Make neat sketches showing the plant arrangement and the psychrometric cycle and identify corresponding points on both diagrams. b. Show on the plant arrangement diagram the controls required to maintain the desired room condition. c. Ignoring any temperature rise through the supply fan calculate the mass flowrate of air through the cooler coil, and the cooler coil and heater battery loads, in kW.
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3. An evaporative cooling tower with an induced draft fan at the air exit is used by a large air- conditioning facility located in a City. The circulating water flow rate is 7.57 m³/min and the water enter the cooling tower at 38 °C. The air inlet conditions are 27 °C dry bulb and 16 ° C wet bulb. The exit air is at 32°C and 90% relative humidity. Determine the air flow rate required to cool the water to 27°C and the quantity of water evaporated. The makeup water is available at 27°C.
Saturated ambient air with a db-temperature of 5°C and a mass flow rate of 0.9 kg/s is divided into two streams. One stream passes through a heating section and leaves it with a relative humidity of 25%. The conditions of the other stream that bypasses the heater remains unchanged. The two streams are then mixed to produce the supply air stream at 24°C. The pressure is constant at 101.3 kPa. -Determine the partial pressure of water vapor of the heated air in kPa.-The heat input by the heating coil in kW.-The mass flow of air through the bypass section in kg/s.

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