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Improvised Air Conditioner Essay

1901 words - 8 pages

I. INTRODUCTION
Air conditioner is a device for cooling and controlling the humidity and purity of the air circulating in a space.
As day time is starting to become more and more unbearable, as fans would only constantly stir the hot sticky air around, so the researchers ended up in choosing this topic. The researchers chose this topic mainly because of the hot weather here in the Philippines especially here in Cabanatuan City that has an average temperature of twenty nine point ninety five degrees Celsius (29.95 ºC). The constant high temperature was the main reason this came up to the researchers’ minds. This particular design is a low-maintenance version that requires no water drainage. ...view middle of the document...

6. Cutter – used for making an opening to the box.
7. Electric tape – used for covering the wires.
8. Marker – used for marking the Styrofoam.
9. Tube ice – it was the source of cold air.
10. Screw driver – used for tightening the screws.
11. Scissors – used for cutting the wires.
12. Omni Switch – used for tuning on and off of the device.

Procedures in Construction of Improvised Air Conditioner
1. Buy and prepare all the materials needed.
2. Mark the Styrofoam according to the size of the brushless fan, omni surface switch and elbow PVC pipe.
3. Carefully cut the Styrofoam.
4. Install the brushless fan, omni surface switch and the elbow PVC pipe in the Styrofoam.
5. Remove at least an inch of the rubber that covers the wires of the 12 V fan and the 1000 mA adaptor.
6. Connect the wires of the DC brushless fan by twisting and tightening the end in the screw.
7. Connect the wires of the 1000 mA adaptor by twisting and tightening the end to the other screw.
8. Put the 5 kilogram ice on the Styrofoam ice box.
9. Plug the adaptor.
10. Turn on the switch.
11. Use the digital thermometer with external probe for the temperature.

IV. RESULTS
Mass of Tube Ice (kg) | Time Interval(minutes) | 6V | 9V | 12V |
| | T(ºC) | %RH | T(ºC) | %RH | T(ºC) | %RH |
5 | 15 | 20.5 | | | | | |
| 30 | 20.7 | | | | | |
| 45 | 20.1 | | | | | |

Mass of Ice Block (kg) | Time Interval(minutes) | 6V | 9V | 12V |
| | T(ºC) | %RH | T(ºC) | %RH | T(ºC) | %RH |
5 | 15 | | | | | | |
| 30 | | | | | | |
| 45 | | | | | | |

Relativity between temperature and time (Tube Ice)

Time (minutes)
The graph shows that 6 volts has the highest temperature and slowest melting time while at 9 volts the temperature was lessened and has quicker melting time but at 12 volts the temperature reached the lowest temperature yet has the fastest melting time.

Relativity between time and relative humidity (Tube Ice)
Time (minutes)

The graph shows that 6 volts has the lowest relative humidity while 9 volts has higher relative humidity but at 12 volts the relative humidity gradually increased and has the highest percentage with respect to time.

Relativity between temperature and time (Ice Block)

Time (minutes)
The graph shows that 6 volts has the highest and slowest melting time while at 9 volts the temperatures were lower but it gradually increased. The 12 volts has the lowest temperatures yet has the fastest melting time.

Relativity between time and relative humidity (Ice Block)

Time (minutes)
The graph shows that 6 volts has the lowest percentage of relative humidity while 9 volts has higher relative humidity yet it gradually decreased. Also, at 12 volts the relative humidity gradually has the highest percentage with respect to time.

V. DISCUSSION
The researchers found out that when the ice used was tube ice, the lowest...

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