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Local regulations may restrict the use of this product to below the conditions quoted.In the interests of development and improvement of the product, we reserve the right to change the specification without notice. Copyright 2007

ISO 9001

Cert. No. LRQ 0963008

TI-GCM-11CM Issue 1

CondensatePipe Sizing

Condensate pipe sizingCondensate pipes operate in 4 basic ways:

1. Drain lines to traps.2. Discharge lines from traps.3. Common discharge lines.4. Pumped lines.

Types 2and 3will usually contain f lash steamwhilst types 1and 4will not.

The condensate pipe sizing chart can beused to size all of the above types, and issuitable for lines up to 100 m long.

Example 1 - Drain lines totraps:Scenario:Drain 500 kg/h from process totrap.How to size:Enter the top chart at 500 kg/hand draw a line horizontally across to thepipe size.Result: If the selection sits between twosizes, choose the smaller size (15 mm).

Example 2 - Discharge linesfrom traps:Scenario: Discharge 200 kg/h from 15 bar gto 0.5 bar g.

How to size: Enter the bottom of the chartat 15 bar g and draw a line to the 0.5 barcondensate pressure line. Draw a linevertically upwards to meet the 200 kg/h lineon the upper half of the chart.Result: If the line is rising choose the largersize (32 mm), if the line falls choose the lowersize (25 mm).

Example 3 - Pumped lines:Scenario: Pump 2 000 kg/h from the pumpto the hotwell tank. If it is an electricalpump use the pump discharge rate, notthe collection rate. For pressure poweredpumps and APTs use 4 x the collectionrate. For this example we will use an APTwhich has the following discharge rate =

4 x 2 000 kg/h = 8 000 kg/h.How to size: Enter the upper half of the chartat 8 000 kg/h and draw a line horizontallyto the pipe size.Result: If the line is less than 100 m usethe lower size, if it is longer than 100 m,use the larger size.

Example 4 - Discharge linesfrom thermostatic traps:Scenario: Condensate at 120C isdischarging to atmosphere (300 kg/h at120C).How to size: Using the temperature scale,enter the lowest half of the chart at 120Cand draw a line horizontally to the atmosphericcondensate pressure line (0 bar g). Proceed

by drawing a line vertically upwards to meetthe 300 kg/h line on the upper half of thechart.Result: If the line is falling, choose the lowersize; if the line is rising, choose the largersize.

Example 1

Example 4Example 2

Example 3

Condensate pipe size mm

100 000

50 000

20 000

10 000

5 000

2 000

1 000

500

200

100

50

20

10

50250

200

180

160

140

120

1000.50

12

5

10

2030

40

6

10

15

20

25

3240

50

65

80

100

150

500 400 350 300 250 200

20

1015

5

2

1

00.5

CondensatepipesizemmC

ondensateflowratekg

/h

Steamt

emperatureC

Ste

ams

ystemp

ressurebarg

Condensatesystempressure

barg

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Condensate Pipe Sizing TI-GCM-11CM Issue 1

Condensate pipe size mm

100 000

50 000

20 000

10 000

5 000

2 000

1 000

500

200

100

50

20

10

50250

200

180

160

140

120

100

0.5

0

1

2

5

10

20

30

40

6

10

15

20

25

32

40

50

65

80

100

150

500 400 350 300 250 200

20

10

5

2

1

0

0.5

Condensatepipesizemm

Condensa

teflowratekg/h

Steamt

emperatureC

Steams

ystemp

ressurebarg

Co

ndensatesystempressurebarg