Steam Surface Condenser Design Software

Thermal and mechanical design and sizing of steam surface condensers per HEI standards, for thermal and nuclear power plants.

Complete condenser design per HEI standards

This program performs the thermal and mechanical design and sizing of steam surface condensers, with heat transfer coefficients calculated in accordance with HEI standards (Heat Exchange Institute). It is valid for small cylindrical units as well as for the large condensers used in thermal and nuclear power plants, and it also generates the performance pressure curves of the unit as a function of heat load and cooling water temperature.

Other separate and complementary programs exist for specific internal systems and for related applications (performance testing, dual pressure condensers and condenser revamping).

Data entry

The main input window collects the steam conditions (shell pressure, steam flow, enthalpy and specific volume), additional drains, cooling water data (inlet and outlet temperature, flow, velocity, cleanliness factor and type of water, brackish or sea water) and the tube geometry: tube diameter and thickness for the normal, impact and air extraction zones, tube pitch, number of passes and tube bundles. The tube material is selected from a list: admiralty brass, aluminium brass, copper-nickel 90/10 and 70/30, stainless steel TP 304 and TP 316, carbon steel and titanium. S.I. or U.S. units can be used.

Steam surface condenser design software - data entry window with steam, cooling water and tube inputs
Data entry window of the Steam Surface Condenser program.

Thermal results

The results sheet gives the condensation temperature, cooling water outlet temperature and flow, heat load, LMTD, overall heat exchange coefficient, exchange surface, number of tubes and tube length between tube sheets, cooling water pressure drop, tube sheet dimensions, number of tube support plates, water box and cooling water nozzle diameters, hotwell height and total condenser length.

Steam surface condenser data results - heat exchange coefficient, surface, number of tubes and pressure drop
Data inputs and thermal results sheet.

Dimensional drawings

The program draws the condenser with its main dimensions. Several arrangements are covered: rectangular units with one or two shells and cylindrical units, with dimensions in millimetres or inches.

Steam surface condenser dimensional drawing generated by the design program, two shells
Dimensional drawing generated by the program (two shells).
Cylindrical steam condenser drawing with main dimensions
Another drawing type: cylindrical condenser.

Performance curves

Condenser pressure versus heat load is calculated for each cooling water inlet temperature (up to ten curves) and for the selected cleanliness factor, giving the full performance map of the unit.

Steam surface condenser performance curves - condenser pressure versus heat load for each cooling water temperature
Performance curves: pressure versus heat load for each temperature.

Mechanical calculation and weights

The mechanical module calculates the shell and water box thickness according to HEI and the weights of the main parts: tubes and tube sheets, shell, water boxes, hotwell, shell neck and turbine neck. It then summarizes the final weights of the condenser: empty, in service, and under tube side and shell side hydraulic tests.

Condenser shell and water box thickness calculation according to HEI standards
Shell and water box thickness calculation per HEI.
Steam condenser final total weights - empty, in service and hydraulic test weights
Final total weights of the condenser.

Documentation

See the complete example with every input and results window in the program documentation:

Steam Surface Condenser – full documentation (PDF)

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Interested in this program? For further information, documentation or support, contact heatexprog@gmail.com or connect on inLinkedIn.