Condenser Water Flow Calculator
Condenser-side flow from load and ΔT, including the compressor heat of rejection.
The tower must reject the load PLUS the compressor work — that's why condenser flow runs ~25% above evaporator flow at the same ΔT.
Formula
Condenser Water Flow Calculator is a free condenser water flow for HVAC designers, technicians and energy auditors — instant, accurate and 100% client-side, with the governing formula and reference shown next to the result so the number can be defended, not just quoted.
About Condenser Water Flow Calculator
Condenser-side flow from load and ΔT, including the compressor heat of rejection. The calculation implements Q_rej = Q_evap + P_compressor; flow = Q_rej/(c_p·ΔT) (AHRI 550/590; tower selection practice). The tower must reject the load PLUS the compressor work — that's why condenser flow runs ~25% above evaporator flow at the same ΔT.
How to use Condenser Water Flow Calculator
- 1Enter Evaporator load in TR.
- 2Enter Chiller efficiency in kW/TR.
- 3Enter Condenser ΔT in °C.
- 4Read Heat of rejection, Condenser flow instantly — no submit button needed.
- 5Need US units? Flip the SI/Imperial toggle and every field converts.
Why use Condenser Water Flow Calculator?
- ✓Implements the standard formula — Q_rej = Q_evap + P_compressor; flow = Q_rej/(c_p·ΔT)
- ✓Reference cited on-page: AHRI 550/590; tower selection practice
- ✓One-click SI ⇄ Imperial toggle — values convert in place, physics stays in SI
- ✓Live worked example: the substitution recomputes from your numbers
- ✓Runs entirely in your browser — nothing uploaded, free forever
Frequently asked questions
What formula does the Condenser Water Flow Calculator use?+
It computes Q_rej = Q_evap + P_compressor; flow = Q_rej/(c_p·ΔT), per AHRI 550/590; tower selection practice. The formula is displayed under the result along with a worked example substituted with your own inputs.
What should I keep in mind when using this calculator?+
The tower must reject the load PLUS the compressor work — that's why condenser flow runs ~25% above evaporator flow at the same ΔT.
Is this based on ASHRAE methods?+
The calculations follow the standard ASHRAE/ISHRAE formulations cited under the result, simplified where industry practice does the same. For permit-grade design, confirm with the full code procedure.
Is the Condenser Water Flow Calculator free to use?+
Yes — completely free, no sign-up, no limits. It runs client-side in your browser, so inputs stay private and results are instant even on slow connections.
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