实时工程工具

冷却塔水平衡与 LSI 计算器

一款面向工业循环冷却塔的厂家中立计算工具，用于计算蒸发、风吹、排污及补水量平衡，并结合朗格利尔饱和指数（LSI）与瑞兹纳稳定指数（RSI）模型，动态预警循环水的结垢与腐蚀风险。

设计参考范围

Langelier (1936)CTI / ASHRAE Mass BalanceVendor-Neutral

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导出功能

专业 PDF 工程报告
水平衡 + LSI/RSI 综合记录
公制 / 英制单位换算
由补水水质估算循环水水质

ATLAS WTS · Process Engineering

Cooling Tower Water Balance & LSI Calculator

Evaporation, drift, blowdown and makeup water balance from mass conservation, plus Langelier Saturation Index scaling/corrosion risk screening for the circulating water.

Local Engine

Project Information

Project Name

Prepared By

Client

Report Date

Heat Load & Water Balance

Circulating Flowm³/h

Hot Water Temp°C

Cold Water Temp°C

Cooling range (ΔT): —

Drift Eliminator Type

Target Cycles of ConcentrationCoC

Typical operating range: 3–6.

Evaporation Coefficient Advanced

Default 0.00153 (metric, m³/h & °C basis) — see methodology note below. Typical range 0.00115–0.00195 for climate variation.

Circulating Water Chemistry (for LSI)

Water Temp°C

Calcium Hardness (as CaCO₃)mg/L

Total Alkalinity (as CaCO₃)mg/L

TDSmg/L

Estimate from Makeup Water Optional

If you only have makeup water lab data on hand, enter it here and estimate the concentrated circulating-water values (Ca, Alkalinity, TDS all scale × CoC at steady state). pH does not scale this way — enter your own circulating water pH reading above.

Makeup Camg/L

Makeup Alk.mg/L

Makeup TDSmg/L

Water Balance Results

Evaporation Loss (E)

—m³/h

E = k × Flow × ΔT

Drift Loss (D)

—m³/h

—

Blowdown Required (B)

—m³/h

B = E/(CoC−1) − D

Total Makeup Water (M)

—m³/h

M = E + D + B

Achieved CoC: —

Heat rejected (informational): —

Scaling & Corrosion Risk (LSI)

Saturation pH (pH_s)

—

Langelier Saturation Index

—

LSI = pH − pH_s

Ryznar Stability Index

—

RSI = 2×pH_s − pH

Design Notes & Warnings

Export includes the current water balance and water chemistry configuration and results.

Evaporation coefficient: the commonly cited "0.0008/0.00085 × flow × range" rule of thumb is an imperial constant (gpm, °F) — used directly against a Celsius ΔT without the required ×1.8 unit conversion it understates evaporation by roughly 1.8×. This tool defaults to the converted metric constant, 0.00153, cross-checked against the independent "~1% evaporation per 5.6°C range" industry rule of thumb.

该计算工具的操作界面目前仅提供英文版本。