- Surface Condenser Calculations
- Shell And Tube Condenser Design Calculation Excel
- Condenser Heat Transfer Calculations
There were many condenser tube failures durign initial commissioning of the condenser steam dump system on US surface conddensers in the 2000-2015 time period due to incorrect mechanical design. In the US elect power industry, full capapcity steam dumps were uncommon until the advent of the gas fired combined cycle plants. Starting at $99, Fast. Excel Formulas for Pressure Drop Calculation in Shell and Tube Heat Exchanger Design The Excel spreadsheet template at the left will calculate the frictional head. Import physical properties data to hot side and cold side from Microsoft Excel & from We. Z Physical properties database (included!)3. Save/Load results. The condenser, coupled with the corresponding fan, and characterized by four rows of finned tubes while the third one refers to a condenser composed of 21 modules (18 parallel-flow and 3 dephlegmator) with three tubes rows. The first step of the analysis has been the design calculation of the condenser main.
Condenser Calculation, Using Thermo Utilities, MS Excel Add-ins
A surface condenser is required to deal with 15 000 kg/h wet steam. Wet steamtemperature is 37 C and enters the condenser with 0.95 quality (dryness fractionis 0.95). The water used for cooling has the following data:
- Inlet pressure 1.20 bar, inlet temperature 7 C
- Outlet pressure 1.013 bar, outlet temperature 22 C
Calculate the flow rate of cooling water and tube surface of the condenser.Assume that the cooling water velocity through tubes is 1.5 m/s| Inputs | Units | |
Wet steam inlet temperature | 37 | C |
Steam quality | 0,95 | . |
Cooling water inlet temperature | 7 | C |
Cooling water inlet pressure | 1,2 | bar |
Cooling water outlet temperature | 22 | C |
Cooling water outlet pressure | 1,013 | bar |
Steam mass flow | 15000 | kg/h |
Cooling water speed | 1,5 | m/s |
Outputs | . | . |
Wet steam pressure | 0,06274 | bar |
Enthalpy of steam at inlet | 2448,28 | kJ/kg |
Entropy of condense | 154,92 | kJ/kg |
Rejected heat/hour | 34400441,72 | kJ/h |
Rejected heat/second | 9555,68 | kJ/s = kW |
Enthalpy of water at inlet | 29,53 | kJ/kg |
Enthalpy of water at outlet | 92,31 | kJ/kg |
Water mass flow | 547885,14 | kg/h |
The overall heat transfer coefficient can be calculated according to BEAMAor HEI standards.
BEAMA: British Electrical and Allied Manufacturers Association
BEAMA publication on the recommended practice for design of surface typesteam condenser
HEI: Heat Exchanger Institute
HEI standards for steam surface condensers
| Outputs | Unit | |
Heat transfer coeff.(BEAMA) | 2,95235 | KW/m2,K |
Logarithmic mean temp. diff. | 49,83 | degree K |
Required area | 64,96 | m2 |
Surface Condenser Calculations
| Outputs | Unit | |
Heat transfer coeff.(HEI) | 3,60991 | kW/m2,K |
Required area | 53,12 | m2 |
Shell And Tube Condenser Design Calculation Excel
