CEEE.CoilDesigner v4.8.20204.113

A sophisticated tool for design and optimization of air-cooled heat exchangers

• A highly customizable tool for simulating tube-fin, micro-channel, wire-fin, and flat tube coils, for air-to-refrigerant heat exchangers and tube-in-tube heat exchangers for fluid-to-fluid heat exchangers

• Model validated with 19 experimental data sets (publications available)

Refrigerant Options

• Pure fluids (R134a, CO2 etc.), and pre-defined mixtures (R410A, R404A, R407C etc.)

• Single phase fluids (e.g., water, glycols etc.)

• Plus all refrigerants available in NIST REFPROP 7.0/8.0, including new fluids such as R1234yf

• User-defined refrigerant mixtures (created on-the-fly), and user-defined external fluid properties (via DLL’s or .FLD files)

• Proprietary implementation for popular refrigerant properties leading to order or magnitude improvement in execution time compared to NIST REFPROP 8.0

Air Side Options

• Multiple fins types (plate, louver, slit, wavy, or bare tubes), with dry air and wet air

• Can account for 2-D air maldistribution on coil face area in velocity, temperature and humidity

• Built-in velocity profiles plus the option to create velocity profiles and to load velocity profiles from CFD output

• Load a fan curve to allow the program to solve for the air flow rate

Flexible Tube-circuitry

• Number of tube rows and columns limited by available computer memory only

• Built-in counter-flow circuitry options (tube-fin) and pass-based inputs (microchannels)

• Custom circuitries can be created by connecting tubes on-screen via consecutive mouse clicks

Heat Transfer and Pressure Drop Correlations

• Popular heat-transfer (62), pressure drop (44), and void fraction (15) correlations implemented in the tool for different refrigerant phases, along with user specified correction factors

• Refrigerant specific (e.g., two-phase R410A, supercritical CO2) correlations

Post-processing and Results

• Detailed results available including all properties of interest for all segments and tubes

• Plot for heat load vs. tubes and circuits, outlet air temperature profile and 3-D plots

• 3-D coil drawing with overlaid results

• Export results (and all inputs) to spreadsheet for archiving and further analysis

Sensitivity / Parametric Studies

• Parametric studies can be conducted with one, two or more parameters simultaneously

• Coil dimensions, refrigerant and air side inlet conditions and tube passes can be varied

• Results can be plotted and exported to spreadsheet

Interoperability

• Coils are saved in portable data format and thus can be loaded from any other application

• External communication interface is provided for .NET platform and for Microsoft Excel. Interfaces for other applications or platforms can be developed

Customization Options

• User-defined correlations for heat transfer and pressure drop (refrigerant and air) can be added

• User-defined refrigerants can be added to the program

• User-defined coefficients for standard heat transfer and pressure drop equations can be provided

• Optionally the program allows the user to develop a coefficient file and encrypt it for distribution

• User-defined cost correlations can be added

Optimization Capabilities

• Single and multiobjective genetic algorithms are built-into the program

• The algorithm systematically searches the entire design space defined by the user for optimum coils that meet certain performance (e.g. heat load and pressure drop) requirements

• Results are displayed as a trade-off (Pareto) set between cost and performance