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Heat Exchanger One Stream Capacity Rate Tool

Constant-specific-heat single-stream balance with heat positive into the stream; no phase change.

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Description

Return one stream's heat-capacity rate and sensible heat rate.

Heat-flow and specific-enthalpy terms depend on a sign convention, a reference state and compatible mass/time bases. A temperature shift, heat-duty residual or latent-energy ratio evaluates a supplied model without determining heat-transfer feasibility, actual properties or equipment performance.

Return one stream's heat-capacity rate and sensible heat rate.

When to use this tool

Use Heat Exchanger One Stream Capacity Rate when checking the stated thermal, reference-state or energy-balance convention.

How to use the tool and how it works

  1. Enter massFlow, specificHeat, inletTemperature, outletTemperature. Use the units and conventions below.
  2. Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
  3. Read capacityRate, heatRate. Use the output convention below.

Return one stream's heat-capacity rate and sensible heat rate. Require massFlow/specificHeat >= 0; capacityRate = flow*cp, heatRate = capacityRate*(outlet-inlet temperature).1

Input fieldMeaning and unitsAccepted input
massFlowMass FlowRequired. Finite number; minimum 0.
specificHeatSpecific HeatRequired. Finite number; minimum 0.
inletTemperatureInlet TemperatureRequired. Finite number.
outletTemperatureOutlet TemperatureRequired. Finite number.
Output fieldInterpretationReturned shape
capacityRateCapacity RateRequired. Finite number.
heatRateHeat RateRequired. Finite number.
json
{
  "input": {
    "massFlow": 2,
    "specificHeat": 4,
    "inletTemperature": 20,
    "outletTemperature": 50
  },
  "output": {
    "capacityRate": 8,
    "heatRate": 240
  }
}

Limitations and assumptions

  • With kg/s and J/(kg K), outputs are W/K and W; negative heat rate means cooling under this sign convention.
  • Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
  • Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.

Alternative or Complementary methods

Use verified state-dependent properties and the complete heat/work balance; evaluate heat transfer and equipment constraints separately for engineering decisions.

References

  1. Calculation and input contract: chemical-engineering/heat-exchanger-one-stream-capacity-rate — tool.io

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