Q) Air conditioning system supplies two rooms required deferent conditions. Room 1 is to be minted at 16 C° dry bu temperature and 75% saturation, by supplying air at 13 C°, whereas room 2 is to be minted at 25 C° and 45% saturation supplying air at the same moisture content as required for room one. There is a commune extract duct the ratio of fre outdoor air to rooms recirculated air be (0.2). Then the mixed air stream passes through a cooled coil which has a cont factor 0.9, then supplying to the rooms through separates heater coil. Determine: a- The mass flow rate of supplying air 1 each room. b- Plot the psychometric chart. c- Obtain the cooler load. d- Obtain the load of each heater. Let the outdc condition is 42 C° dry bulb temperature & 25 % RH. [Room 1 (Qs=5.2 kW, Q=1.3 kW) Room 2 (Qs=4.2 kW, QL-2.8 kW

Q) Air conditioning system supplies two rooms required deferent conditions. Room 1 is to be minted at 16 C° dry bu temperature and 75% saturation, by supplying air at 13 C°, whereas room 2 is to be minted at 25 C° and 45% saturation supplying air at the same moisture content as required for room one. There is a commune extract duct the ratio of fre outdoor air to rooms recirculated air be (0.2). Then the mixed air stream passes through a cooled coil which has a cont factor 0.9, then supplying to the rooms through separates heater coil. Determine: a- The mass flow rate of supplying air 1 each room. b- Plot the psychometric chart. c- Obtain the cooler load. d- Obtain the load of each heater. Let the outdc condition is 42 C° dry bulb temperature & 25 % RH. [Room 1 (Qs=5.2 kW, Q=1.3 kW) Room 2 (Qs=4.2 kW, QL-2.8 kW

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter40: Typical Operating Conditions

Section: Chapter Questions

Problem 1RQ: The standard design conditions for air-conditioning systems established by the Air-Conditioning,...

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A summer air-conditioning shown below is required to maintain a certain room at specified conditions. The layout of the system is indicated on the next page and the specifications are listed below.System specifications:Required room temperature: 23⁰C, 50% Relative humidityAtmospheric pressure: 101 kPaOutside air conditions: 30⁰C, 80% Relative humiditySensible heat gain: 5 kWLatent heat gain: 4 kWTemperature rise across fan: 1.5⁰CTemperature of air leaving cooler: 12⁰CTemperature of air entering room: 18⁰CApparatus dew point of cooler: 7⁰C Draw the processes on a psychrometric chart and determine the following: 1.The ratio of mass flow rate of re-circulated air to the mass flow rate of air supplied to the room. 2.The heat removed by the cooling coil.3.The heat supplied in the re-heating coil. 4.The cooling coil bypass factor.
A summer air-conditioning shown below is required to maintain a certain room at specified conditions. The layout of the system is indicated on the next page and the specifications are listed below.System specifications:Required room temperature: 23⁰C, 50% Relative humidityAtmospheric pressure: 101 kPaOutside air conditions: 30⁰C, 80% Relative humidity Sensible heat gain: 5 kWLatent heat gain: 4 kWTemperature rise across fan: 1.5⁰CTemperature of air leaving cooler: 12⁰CTemperature of air entering room: 18⁰CApparatus dew point of cooler: 7⁰C
The standard design conditions for air-conditioning systems established by the Air-Conditioning, Heating and Refrigeration Institute (AHRI) are outside temperature _____F, inside temperature ______F, with a humidityof____%.
3:57 A Done lecture 7_b5ee35c08478147bb8a3744a... Lec. (7) tar -Dry bulb temperature O Example (1): An air conditioning equipment (figure) have the following: - Supply air mass-1.26 kg/s. The cooling coil receives 20 % outdoor air and 80% return air. tdz Fig. 18.14. Representation of supply air condition and room design condition. 0.252 kg/s Refrigeration and A/C - Outdoor air conditions are: 28°C db, 19.5°C wb Return air conditions are: 22°C db, 50% RH. The mixture air condition outlet the cooling coil are: 10°C db, 0.00735 kg/kgda Draw the system on the Psychrometric chart, then calculate: 1. Cooling coil load. 2. Room sensible heat. 3. Room latent heat. 4. Fresh (outdoor) load. 5. Duct and fan heat gain 6. Sensible heat ratio SHR. If the supply air temperature increases with a value 1°K due to fan motor heat gain and 2°K due to duct heat gain. . ← 1.008 kg/s R to Dr. Omar M. Ali LTE الغرفة المراد تكييفها (22,50 %) 1.26 kg/s R Grand Sensible Heat Factor It is defined as the ratio of…
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