ClueLuma

Sensible heat ratio (SHR) calculator

Sensible heat ratio is calculated as q_sensible / (q_sensible + q_latent). Use the stated system boundary and matching input units.

Units
SHR=qsensibleqsensible+qlatent\mathrm{SHR} = \frac{q_{\text{sensible}}}{q_{\text{sensible}} + q_{\text{latent}}}

Calculator

Enter the values you know and leave one box empty. Calculate finds the empty one, the result or any input.

Btu/h
Btu/h
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Worked example

Given

  • qsensibleq_{\text{sensible}} = 54,000 Btu/h
  • qlatentq_{\text{latent}} = 18,000 Btu/h
SHR=54,00054,000+18,000=0.75\mathrm{SHR} = \frac{54{,}000}{54{,}000 + 18{,}000} = 0.75

Symbols and units

SymbolMeaningUnit
SHR\mathrm{SHR}sensible heat ratio—
qsensibleq_{\text{sensible}}sensible cooling loadBtu/h
qlatentq_{\text{latent}}latent cooling loadBtu/h

Related calculators

Results are estimates for study and screening. Check the inputs, units and assumptions before you use them for design, billing or contract decisions.