Feedwater Chemistry Limits

Reference data and engineering information about feedwater chemistry limits for miscellaneous applications.

feedwaterchemistrylimits

Overview

Engineering reference data for Feedwater Chemistry Limits in miscellaneous.

Key Formulas

Unit Conversion

$y = x \cdot k$

Multiply by conversion factor.

Linear Interpolation

$y = y_1 + \frac{(x - x_1)(y_2 - y_1)}{x_2 - x_1}$

Estimate between two known points.

Percentage

$p = \frac{\text{part}}{\text{whole}} \times 100\%$

Part as fraction of whole.

Variables

Symbol	Description	Unit
$x$	Input value	—
$y$	Output value	—
$k$	Conversion factor	—

ABMA Chemistry Limits

7 rows

Maximum recommended chemistry limits for boiler feed water according to ABMA.
Boiler Operating Pressure (psig / bar)	Total Dissolved Solids - TDS(ppm)	Total Alkalinity(ppm)	Total Suspended Solids(ppm)
0 - 50 (0 - 3.5)	2500	500	—
50 - 300 (3.5 - 20)	3500	700	15
300 - 450 (20 - 30)	3000	600	10
450 - 600 (30 - 40)	2500	500	8
600 - 750 (40 - 50)	1000	200	3
750 - 900 (50 - 60)	750	150	2
900 - 1000 (60 - 70)	625	125	1

Source: ABMA / engineeringtoolbox.com

5 rows

Maximum allowable impurities in boiler water.
Chemical	Symbol	Maximum Concentration(ppm)
Sodium sulphite	NA2SO3	1
Sodium chloride	NaCl	10
Sodium phosphate	NA3PO4	25
Sodium sulphate	NA2SO4	25
Silica oxide	SiO2	0.2

Source: ABMA / engineeringtoolbox.com

Interactive Charts

Cavitation

References

Original Source

Source: engineeringtoolbox.com