PC Program for Feed Water Heater Design
TPThex05 from Thermal powerTec Ltd. is a software that was developed for simulating
and optimizing the design of FWH's. It includes components of thermal and mechanical
feedwater heater design of tube sheet type in conventional, nuclear and industrial
steam power plants.
TPThex05 efficiently calculates horizontal and vertical tube sheet heaters with 2-pass
U-Tubes of the following types:
" Co: Condensing Zone
" Co.Sc: Condensing Zone with an integral Subcooler
" Ds.Co.Sc: Condensing Zone with an integral Desuperheater and Subcooler
The complex interaction of the desuperheating, condensing and subcooling zones are
modeled accurately in a user-friendly interface. Upon thoroughly testing TPThex05,
Thermal powerTec Ltd. Considered maintaining the optimal solution when designing FWH.
TPThex05 was developed with Windows 10 (64 Bit) and should be executed in PC operation
system Window 7 (64 Bit). The TPThex05 Design code was based on DIN, TEMA, AD, HEI
standards and TPT design.
TPThex05 performs three main functions:
this module provides the required geometric heater dimensions (as tube number, bundle
and shell diameter, etc.) for a given input thermal data (as extraction steam inlet
state, mass flow rate and inlet condition of feedwater). Design output file "***.dsn".
The resulted output data can be exported into the performance function.
for a given heater geometric heater dimensions and a given thermal input data, the
module provides thermal output data (such as water and condensate outlet temperature).
In this module, the heater geometry can be optimized by changing some geometric
parameters. TPThex05 includes tube vibration and venting system calculation.
All operating modes according to the heat balance diagrams can be calculated.
Performance output file "***.pfm".
Both design and performance functions create DXF file "*** T.dxf" diagram of feedwater,
steam and condensate temperature of the heater.
Mechanic Design & Weights:
The mechanic module provides a preliminary mechanic heater design. In addition to the
weight of heater components (tubes, water box, tube sheet, steam shell, nozzles and
other parts) and drawings which are necessary for providing feed water heater offers.
The mechanical output is an essential basis for the final mechanical calculation and
Mechanic output file "***.mcw".
Refer to Exhibit 050 (project data flow).
Aditional mechanic output files:
" Tube Bundle geometry, file "***.bun"
" Tube Length and bends, file "***.ben"
Mechanic Drawings, dxf-Files:
" Heater outline: the mechanical calculation creates an outline drawing in the form
of a dxf file (***O.dxf) according to the selected and calculated heater type.
" Heater bundle: the mechanical calculation also generates a bundle drowning in
the form of a dxf file (***B.dxf) according to the selected and calculated heater type
Help File Support:
TPThex05 is supported with a help file offering information about:
" Tube bundle geometry and support plates
" Desuperheater and subcooler geometries
" Limit velocities of water, steam and condensate in tubes, water box, shell and nozzles
" Materials, control level, tube vibration and venting system
" TPThex05 performs economic thermal and mechanical designs and determines the weights
of the heater components
" The material and manufacturing costs can be determined based on the calculated
" During calculations, TPThex05 provides a warning message if the flow velocity or
dimensions exceed limit values
" TPThex05 is supported with a help file function for support and assistance
" TPThex05 simplifies the process of delivering offers by providing heater outline
and data sheet
" Upon orders, TPThex05 can optimizes the thermal heater design and calculates all
" The mechanical design is an essential foundation for the final mechanical calculation
and heater construction.
" TPThex05 is an accurate and user-friendly tool that increases engineering efficiency
and saves person hour.
PROJECT DESIGN EXHIBIT
Project file (Hph3dcs.Prj):
Thermal Performance file (Hph3dcs.pfm):
Mechanic design file (Hph3dcs.mcw):
Outline of HP FW Heater, file Hph3dcs.dxf:
Bundle of HP FW Heater, file Hph3dcsB.dxf: