Datacenter Engineering

ASHRAE 90.4 Airside Sensible Heat Ratio (SHR) Validator for CRAC/CRAH Units calculator

ASHRAE 90.4 Airside Sensible Heat Ratio (SHR) Validator for CRAC/CRAH Units engineering calculator.

Quick Answer

Calculate ASHRAE 90.4 Airside Sensible Heat Ratio (SHR) Validator for CRAC/CRAH Units

Calculator

Sensible heat ratio (SHR)
—

ToolFusion Engineering Network

Need Equipment or a Supplier for This Project?

Use your calculation result to continue with equipment selection, supplier discovery, engineering support, or project evaluation.

Find Engineering Solutions →

Result Interpretation

ASHRAE 90.4 Airside Sensible Heat Ratio (SHR) Validator for CRAC/CRAH Units calculator computes Sensible heat ratio (SHR) in 1 using the defined engineering formula and the input values provided. No universal acceptance threshold is defined by this calculator.

Worked Example

Verified calculation

Given:

  • Airside sensible cooling capacity = 24000
  • Airside total cooling capacity = 30000

Expected Result:

  • Sensible heat ratio (SHR) = 0.8

Engineering Interpretation:

Under the given input conditions, the calculated result is: Sensible heat ratio (SHR) = 0.8.

The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from automatically validated test cases.

Formula / Method

SHR = airside sensible cooling capacity / airside total cooling capacity

Formula family: formula_datacenter_craccrah_unit_airside_sensible_heat_ratio_shr_validator_for_ashrae_904_cooling_load_matching

Variables

SymbolLabelRoleDescription
q_sensible_air Airside sensible cooling capacity INPUT Airside sensible cooling capacity
q_total_air Airside total cooling capacity INPUT Airside total cooling capacity
result Sensible heat ratio (SHR) OUTPUT Sensible heat ratio (SHR)

Calculation Steps

  1. Enter the airside sensible cooling capacity in W.
  2. Enter the airside total cooling capacity in W.
  3. Step 1: Compute sensible heat ratio (shr).
  4. Read the sensible heat ratio (shr) (1) from the results.

Engineering Summary

Calculate ASHRAE 90.4 Airside Sensible Heat Ratio (SHR) Validator for CRAC/CRAH Units

Frequently Asked Questions

What does this calculator calculate?

The ASHRAE 90.4 Airside Sensible Heat Ratio (SHR) Validator for CRAC/CRAH Units calculator estimates Sensible heat ratio (SHR) based on the input parameters you provide

Why is airside sensible cooling capacity important in this calculation?

airside sensible cooling capacity is directly proportional to sensible heat ratio (shr). When you enter airside sensible cooling capacity in W, the calculator uses it in the engineering formula to compute the output

How should I interpret the result sensible heat ratio (shr)?

The calculator outputs sensible heat ratio (shr). The result is computed directly from the input values using the defined engineering formula

What units should I use for the inputs?

Enter each value in the units shown next to the input field: Airside sensible cooling capacity (W), Airside total cooling capacity (W). Make sure all inputs use the specified units for consistent results

What assumptions does this calculator use?

This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment

Browse More Tools

Explore the full index of engineering calculators on this vertical site.