Condenser Design Calculation Excel

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 DESIGN. Condensation on horizontal tubes (Nusselt theory) Heat transfer coefficient is obtained by h=0.728kL3 L(L- V)g /L (Tv TW) D Where kL thermal conductivity of liquid L density of liquid V density of vapour latent heat of condensation of steam g- Gravitational acceleration =9.81m/s2 L viscosity of liquid TW temperature of surface Tv temperature of vapour D diameter The above. Condenser is also about 10F. Thus, the leaving water temperature approach is 20F(125F minus 105F). By Elliot Spencer Graham Mfg.Co., Inc., Great Neck, Long Island, N.Y. Factors affecting condenser design and selection. A typical air conditioning surface condenser specification is included. Specifying Steam Surface Condensers.

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Condenser Design Calculation Excel Formula


Condenser Design (CnD)

CnD is a software that is made to demonstrate thermal analysis and design calculations required for designing shell and tube condensers. This software can design, horizontal shell side condensers, horizontal tube side condensers, vertical shell side condensers, vertical tube side condensers and reflux condensers.

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Condenser Design

This software application is intended for use by professional and academics in the engineering industry. Some basic understanding of thermodynamics, fluid flow, and shell & tube heat exchangers is required before attempting to use this tool. Support S.I Units and English (U.S) Units of measurement.

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MITCalc-Roler Bearings FAG

Condenser heat transfer calculations

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Condenser Calculation

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Design

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This program allows the user to take an Excel spreadsheet with any type of calculation data (no matter how complex) and optimize a calculation outcome (e.g. total cost).This is based on the selection of up to five design variables and up to five constraints. The optimization can be performed as a maximization, minimization or the attempt to reach a target value.

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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

Excel

The overall heat transfer coefficient can be calculated according to BEAMAor HEI standards.

BEAMA: British Electrical and Allied Manufacturers Association

Condenser Design Calculation Excel Example

BEAMA publication on the recommended practice for design of surface typesteam condenser

Condenser Design Calculation Excel Template

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

If we use the less conservative HEI method we obtain the following:
Outputs

Unit

Heat transfer coeff.(HEI)

3,60991

kW/m2,K

Required area

53,12

m2

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