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Refrigeration & Diagnostics โœ“ ISO/ASHRAE Thermodynamic Math โ€ข Calibrated for 42ยฐC Tropical Ambient

Total Heat of Rejection (THR) Sizer

Calculate Total Heat of Rejection for industrial condensers and chillers. Prevent high discharge pressure trips during summer.

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Total Heat of Rejection (THR)
750,000 BTU/hr
219.8 kW Condenser Heat Dissipation
Condenser coil must be sized for minimum 62.5 TR heat rejection capacity.
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Governing Formula:
THR (BTU/hr) = Evaporator Capacity (BTU/hr) + Compressor Heat (kW ร— 3412); THR โ‰ˆ TR ร— 15,000 BTU/hr
Pune Field Notes & Environmental Standards:

Crucial for air-cooled and water-cooled condenser sizing to avoid high discharge pressure trips during peak summer.

Technical Engineering Guide & Field Diagnostic Practices

The condenser must reject both the heat absorbed in the evaporator and the electrical compression work done by the compressor motor. Accurate THR calculation prevents condenser undersizing and thermal trips.

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