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How Many BTUs Does a 1/5 HP Compressor Have?

Estimating the BTU capacity of a 1/5 HP compressor depends on the refrigerant used in the system and the operating temperature of the evaporator coil within the refrigeration cycle.

1/5 HP to BTU:

For a 1/5 HP compressor, the following cooling capacities in BTU per hour can be averaged based on the evaporator coil temperature and R134a refrigerant:

Evaporator Temp (°C)-35°C-30°C-25°C-20°C-15°C-10°C
Cooling Capacity (BTU/h)342.58488.34646.75831.551056.501335.34

From the table, a 1/5 HP compressor operating at an evaporator temperature of -10°C with R134a refrigerant achieves a cooling capacity of approximately 1335.34 BTU/h.

Factors Affecting Cooling Capacity:

The cooling capacity can vary based on the following working conditions:

  • Type and Efficiency of the Compressor
  • Frequency (Hertz) or Speed of the Compressor Motor
  • Ambient Temperature
  • Cooling Mechanism of the Condenser Coil (natural or forced convection)
  • Subcooling Achieved in the Condenser
  • Superheating of the Refrigerant at the Evaporator Outlet

Table Reference Conditions:

The above table is based on the following conditions:

  • Superheating: 5°C at the evaporator outlet
  • Subcooling: 5°C at the condenser outlet
  • Ambient Temperature: 35°C

If any of these reference conditions change, the cooling capacity of the 1/5 HP compressor will also differ.

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