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Air Conditioning Experiment Essay

6012 words - 25 pages

8Th November 2014
8Th November 2014
Daniel Loftus
P11267317
Mechanical Engineering Third Year
ENGD3036-2015-Y Plant Analysis and Sustainability:
An Investigation into the characteristic of an Air-Conditioning Plant

For the Attention of Dr. H. Rajakaruna   
Table of Contents
Objectives of the experiment 2
Experiment Apparatus 2
2
Data/Results 2
First Data Sheet 2
Second Data Sheet 2
Part-1 2
Part-2 2
Part-3 2
Part-4 2
Part 5 2
2
Discussion 2
Part One 2
Part Two [Research and Review] 2
Research and Review into Air-Conditioning Plants 2
Energy Issues 2
Health Issues 2
Policies 2
Conclusions 2
References 2
Appendices Error! Bookmark not ...view middle of the document...

8 | 14.93 |
B | After Pre-heat or Steam injection [DBT] | T3 | 0C | 34.8 | 34.6 | 34.2 | 34.53 |
B | After Pre-heat or Steam injection [WBT] | T4 | 0C | 26.1 | 26 | 25.9 | 26 |
C | After Cooling/ Dehumidification [DBT] | T5 | 0C | 20 | 19.9 | 19.9 | 19.93 |
C | After Cooling/ Dehumidification [WBT] | T6 | 0C | 18.8 | 18.7 | 18.5 | 18.67 |
D | After Re-Heating [DBT] | T7 | 0C | 35.3 | 35.3 | 34.8 | 35.13 |
D | After Re-heating [WBT] | T8 | 0C | 23.3 | 23.3 | 23 | 23.20 |
  | Supply volts | VL | V | 232 | 232 | 232 | 232 |
  | Duct differential pressure | Z | mmH2O | 4.5 | 4.5 | 4.7 | 4.57 |
  | Fan supply voltage | VF | V | 138 | 139 | 139 | 138.667 |
  | Condensate collected | me | ml | 150 | 160 | 160 | 156.67 |
  | Condensate collection - Time interval | x | s | 300 | 300 | 300 | 300 |
  | R134a mass flow rate | ref | g/s | | | | |
[3]
[3]
System Heater Resistances First Data:
Boiler, Lower 2kW | Rb | | 24.8 |
Boiler, Upper 2kW | Rb | | 23.9 |
Boiler, 1kW | Rb | | 58.7 |
1st Pre-Heater 1kW | RP | | 47.3 |
2nd Pre-Heater 1kW | RP | | 47.4 |
1st Re-Heater 1kW | Rr | | 47.7 |
2nd Re-Heater 1kW | Rr | | 47.3 |
Second Data Sheet
  |  Test Reference [Second Data Set] |   | | Start | End | Mean |
A | Air at Fan inlet [DBT] | T1 | 0C | 25.1 | 25.5 | 25.3 |
A | Air at Fan inlet [WBT] | T2 | 0C | 17.4 | 17.1 | 17.25 |
B | After Pre-heat or Steam injection [DBT] | T3 | 0C | 40.6 | 41 | 40.8 |
B | After Pre-heat or Steam injection [WBT] | T4 | 0C | 28.2 | 28.3 | 28.25 |
C | After Cooling/ Dehumidification [DBT] | T5 | 0C | 23.3 | 22.9 | 23.1 |
C | After Cooling/ Dehumidification [WBT] | T6 | 0C | 21.5 | 21.4 | 21.45 |
D | After Re-Heating [DBT] | T7 | 0C | 39.7 | 39.3 | 39.5 |
D | After Re-heating [WBT] | T8 | 0C | 25.5 | 25.4 | 25.45 |
  | Supply volts | VL | V | 238 | 238 | 238 |
  | Duct differential pressure | Z | mmH2O | 4.5 | 4.5 | 4.5 |
  | Fan supply voltage | VF | V | 138 | 138 | 138 |
  | Condensate collected | me | ml | 265 | 265 | 265 |
  | Condensate collection - Time interval | x | s | 600 | 600 | 600 |
  | R134a mass flow rate | ref | g/s | | | |

[4]
[4]
System Heater Resistances Second Data:
Boiler, Lower 2kW | Rb | W | 25.3 |
Boiler, Upper 2kW | Rb | W | 25.7 |
Boiler, 1kW | Rb | W | 58.8 |
1st Pre-Heater 1kW | RP | W | 47.3 |
2nd Pre-Heater 1kW | RP | W | 47.4 |
1st Re-Heater 1kW | Rr | W | 47.7 |
2nd Re-Heater 1kW | Rr | W | 47.3 |

Part-1
Determine the dry air flow of rate through the system using the inclined manometer and the following equation:
[kgdry_air/s]
z = Orifice differential [duct differential pressure] (mmH2O)
First Data Set (Experimental Data):
*

* Z=4.57mmH20

* vD=0.891m3kg-1

* ma=0.0517ZvD

* ma=0.05174.570.891

* ma=0.117087 [kgdry_air/s]

First Data Set (Experimental Data):
*

* Z=4.57mmH20

* vD=0.891m3kg-1

* ma=0.0517ZvD

* ma=0.05174.570.891
...

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