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ACPC Output
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AC-PC Air Cooler Simulation Program
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AC-PC is a thermal rating and performance evaluation air-cooled heat
exchanger application. It provides complete information on the thermal and
hydraulic performance of a cooler that operates under fixed geometry and
specified process conditions.
Many types of air-cooled exchangers are evaluated by AC-PC including:
 | Induced or forced draft units with tubes in horizontal, vertical or
inclined positions
| All multipass arrangements including unequal number of rows per pass as
well as serpentine coils in co- or counter-current cross flow.
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AC-PC can analyze process streams undergoing any of the following processes:
| Sensible cooling of liquids and vapors
| Pure component condensation
| Condensation of mixed vapors
| Partial condensation
| Condensation of hydrocarbon and steam mixtures immiscible in liquid phase
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AC-PC evaluates both tube and air side maldistribution, which can be critical
to air cooler performance. On the tube side, the program determines the flow
fraction in each tube by balancing the pressure drop across all tubes of each
pass.
Two optional calculation procedures are provided in AC-PC:
- A rigorous procedure that calculates row by row and stepwise along each
tube length.
- An overall method in which the cooler is treated as one unit.
AC-PC can be used in four different ways:
- Check Rating - Air face velocity, inlet air temperature and
process conditions are specified. AC-PC calculates over or under design.
- Evaluating Airside Velocity - Process terminal conditions, flow
rate and inlet temperatures are specified. AC-PC calculates air velocity,
pressure drop and exit temperature and fan horsepower.
- Evaluating Tubeside Flow Rate - Process terminal temperatures,
air inlet temperature and velocity are specified. AC-PC calculates heat
duty, process flow rate and air outlet temperatures.
- Evaluating Outlet Temperatures - Air velocity, process flow rate
and inlet temperatures are specified. AC-PC calculates heat duty, process
outlet temperature (and vapor quality) and air outlet temperature.
Following are some of the applications of AC-PC:
| Checking vendor designs
| Testing new units
| Evaluating existing units for different operating conditions
| Troubleshooting operating problems such as air or tube side
maldistribution, freezing or solidification in tubes, air recirculation and
fan performance
| Designing new units
| Operating air coolers under natural convection conditions
| Determining fouling factors for existing units
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To download the AC-PC Brochure (Black and White)
click on the link below:
ACPC
Brochure.zip (189K)
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