ChAD2000©  structure of program is composed by three main blocks.

1. COMPONENTS DATABASE

2. UTILITY PROGRAMS

3. REFRIGERATOR DESIGN

1. COMPONENTS DATABASE 

• Materials

• Refrigerants (Default R134a, R600a, R290, R404a, R507)

• Walls configurations

• Foods Properties
  

• Compressors

• Natural convection (static) plate and tube, wires and tube and foamed in (skin) condensers

• Air forced convection finned condensers

• Capillaries

• Natural convection (static) plate and tube, wires and tube and foamed in (skin) evaporators

• Air forced convection finned evaporators

• Natural convection (static) plate and tube, wires and tube and foamed in (skin) exchangers

• Finned fan-cooled or heated exchangers

• Air-forced convection finned exchangers

2. UTILITY PROGRAMS - calculation of:

• Refrigerants properties
  

• Compressors performances
  

• Natural convection (static) plate and tube, wires and tube and foamed in (skin) condensers

• Air forced convection finned condensers performances
  

• Capillaries performances
  

• Natural convection (static) plate and tube, wires and tube and foamed in (skin) evaporators

• Air forced convection finned evaporators performances

• Natural convection (static) plate and tube, wires and tube and foamed in (skin) exchangers

• Air-forced convection finned exchangers performances

• Pipes circuit pressure loss 

• Psychrometrics calculation (Thermodynamic properties of moist air)
  

3. REFRIGERATOR DESIGN

 REFRIGERATOR DEVELOPMENT PROCESS FLOW CHART

REFRIGERATOR DESIGN STEPS

• Refrigerator type choice

• Geometrical setup and calculation.

• Estimated working temperatures setup and walls heat loss calculation.

• Miscellaneous electrical and thermal loads setup

INTERACTIVE CIRCUIT COMPONENTS SETUP ACCORDING TO THERMAL LOADS 

• Compressor setup.

• Condenser setup.

• Capillary setup

• Evaporators setup

 THERMODINAMIC SIMULATION OF APPLIANCE PERFORMANCES
 STEADY STATE

• Geometrical calculation

• Walls heat losses calculation

• Miscellaneous electrical and thermal loads calculation
  (heaters, fans, foods etc.)

• Components calculation (walls insulation, compressor, exchangers, capillary etc.)

• Circuit balancing with the selected components

• Circuit performances at balancing state

• Pull down time

• Cooling and freezing time of foods

• Rising time

• Energy consumption

• Cycle time

• Running rate of compressor 

• Energy class according to EUROPEAN STANDARD