Description
Shift a temperature for pinch-analysis comparison.
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.
Shift a temperature for pinch-analysis comparison.
When to use this tool
Use Chemical Engineering: Pinch Hot Cold Shifted Temperature when checking the stated thermal, reference-state or energy-balance convention.
How to use the tool and how it works
- Enter temperature, minimumApproach, stream. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read result. Expand result to inspect the returned fields.
Shift a temperature for pinch-analysis comparison. Require minimumApproach >= 0 and hot/cold stream label; subtract half the approach for hot, add half for cold.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| temperature | Temperature | Required. Finite number. |
| minimumApproach | Nonnegative temperature difference; half is subtracted for hot streams and added for cold streams. | Required. Finite number. |
| stream | Stream | Required. Text; one of "hot", "cold". Implementation limit: 8192 Unicode code points and 16384 UTF-16 code units. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| result | Returned calculated value or nested object under the stated output convention. | Required. Object. |
| result.shiftedTemperature | Shifted Temperature | Calculated result member: number. |
{
"input": {
"temperature": 100,
"minimumApproach": 20,
"stream": "hot"
},
"output": {
"result": {
"shiftedTemperature": 90
}
}
}Limitations and assumptions
- Use compatible temperature differences; this is a bookkeeping shift, not a composite curve, pinch point or heat-exchanger network solution.
- Outputs are nested inside result. 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
Similar or alternative tools
- Heat Capacity Reference Temperature Gap
Return sensible energy relative to a reference temperature.
- Process Stream Enthalpy Reference Shift
Shift a stream enthalpy reference using constant heat capacity.