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Published on Dec 07, 2015

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PRESENTATION OUTLINE

1.

BIG TRUCK A/C SYSTEMS

HOW DOES IT WORK?
2.

BY

  • Freddie Garcia
  • Garrett Bell
  • Cody Kuningas
3.

AIR DUCTS AND VENT PORTS

AFTER AIR IS BLOWN THROUGH AND COOLED IT IS DELIVERED TO DRIVER AND CAB.
4.

END RESULT IS A COMFORTABLE DRIVING ENVIROMENT

Photo by ChaoticMind75
5.

ABOUT AC SYSTEMS

  • Ac systems are a selfcontained system of refrigerant, PAG oil, hoses, and specially designed components.
  • The act of conditioning air is simply removing the HEAT from it!
  • No matter how cold air seems to be in cab there is only really a 25 degree drop.
  • Usually 10 minutes is the standard run time to stabilize the system.
  • Leaks in the system can be detected in various ways uv dye, electronic leak detector, and soap and water.
Photo by Kinnectz941
6.

REFRIGERANT

THERE ARE DIFFERENT REFRIGERANTS USED IN DIFFERENT TYPES OF SYSTEMS
7.

CLIMATE CONTROL SWITCHES

DRIVER STARTS THE PROCESS BY USING THE CLIMATE CONTROL SWITCHES.
8.

COMPRESSOR

BELT DRIVEN DEVICE USED TO COMPRESS LOW PRESSURE GAS INTO A HIGH PRESSURE GAS.
9.

CONDENSOR

A HEAT EXCHANGER USED TO COOL THE HIGH PRESSURE GAS INTO HIGH PRESSURE LIQID BY LETTING OUTSIDE AIR PASS THOUGH IT. MOUNTED IN FRONT OF TRUCK RADIATOR.
10.

EXPANSION VALVE

HIGH PRESSURE LIQUID IS SENT TO THE EXPANSION VALVE WHERE IT IS TURNED INTO A LOW PRESSURE LIQUID. HERE IT IS AT ITS COLDEST.
11.

EVAPORATOR

LOW PRESSURE LIQUID IS THEN PASSED THROUGH THE EVAPORATOR WHERE HOT AIR IS BLOWN THROUGH THIS HEAT EXCHANGER TURNING LIQUID BACK INTO A LOW PRESSURE GAS.
12.

BLOWER MOTOR

IS HOUSED IN THE THE EVAPORATOR BOX WHERE IT IS USED TO BLOW THE HOT AIR THROUGH THE EVAPORATOR.

Freddie Garcia