Air handling supplies 50 m^3/s of air mixed by 20% by weight of fresh air at 45 C (DBT) and 30 C(WBT) with 80% of recirculated air from the space at 25 C(DBT) and 50% RH. The air leaves the cooling coil at 12 C saturated state. The cooling capacity and the moisture removal rate from the supplied air to * :the space are

Air handling supplies 50 m^3/s of air mixed by 20% by weight of fresh air at 45 C (DBT) and 30 C(WBT) with 80% of recirculated air from the space at 25 C(DBT) and 50% RH. The air leaves the cooling coil at 12 C saturated state. The cooling capacity and the moisture removal rate from the supplied air to * :the space are

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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HUMIDIFIER: MASS BALANCE On a hot summer day, the air is at 30.6 ° C and 80% relative humidity. The air conditioning in a building supplies 30 m3 / min of air at 13 ° C to keep the air inside the building at an average temperature of 24 ° C and 40% relative humidity. If the ventilation switch of the air conditioner is “open”, the air from outside enters the unit as shown in the drawing (I): The air conditioner cools the air to a temperature low enough to condense the required amount of water and reheat it to 13 ° C (unsaturated current), at which point it has the same absolute humidity as the air in the building. Calculate: a. the speed at which condenses water (kg / min) b. the temperature at which the air must be cooled to condense water at this rate. Do the calculations without using the psychrometric chart (although 1 atm of current pressure can be assumed). If the ventilation switch is closed, as normal, the air from inside the building would be recirculated in the air…
in a cooling process, the _____ and _______ of the air-water mixture do not change.
An air-conditioning system to be installed in a factory with sensible and latent cooling loads of 175 KW and 65 KW, respectively. Assume that the relative humidity of supply air is 90%. The inside state is at 21 °C DB and 70% RH. What is the approximate required dry-bulb temperature in °C of the supply state of air? Select one: O a. 17 b. 16 O c. 18 O d. 14.5 Oe. 14 L
A supply line carries a two-phase liquid–vapour mixture of steam at 450 psi. A small fraction of the flow in the line is diverted through a throttling calorimeter and exhausted to the atmosphere at 20 psi. The temperature of the exhaust steam is measured as 350°F. Determine the quality of the steam in the supply line. Select one: a. 95.7% b. 98% c. 92% d. 100%
Refrigerant 134a: T = 20°C v = 0.05397 m/kg O On the Triple Line Saturated Vapor Saturated Liquid Critical Point Superheated Vapor Compressed Liquid
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
Q2/ In AC system, 540 L/s of the outdoor air at 32C db, 23C wb mixes with 2850 L/s of the return air at 24C db, 50% RH. The mixture cools through the cooling load and leave it at 90% RH. If the room SHF is 70%. Calculate: 1. Conditions of the air leaving the coil. 2. Cooling coil capacity. 3. Sensible load, latent load and total load of the room.
H.W: - Steam at 7 bar & relative humidity 0.08 throttle to 0.05 bar, determine the steam condition after throttle.
Step by step solution for mass flow, volumetric flow, and velocity please thank youu
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Exercise-47: It is required maintain an air conditioned hall at DBT=28 °C, and WBT=20 °C, Q = 45.4 kW, Q = 16.5 kW. Outside air at DBT=39°C, and WBT=28 °C is mixed with the return air is ratio of (1/4) by volume and then mixture is passed through a cooling coil with apparatus dew point temperature of 9 °C, determine; the temperature of the air after the cooling coil, volume flow rate of air supplied to the hall, BPF, cooling coil load, plot the processes of the system.