Engineering Board Exam Reviewer · Thermodynamics · medium

Which refrigerant is widely used in large industrial plants such as ice plants and cold storage due to its high latent heat, though it is toxic?

  1. Ammonia (R-717)
  2. R-134a
  3. Carbon dioxide (R-744)
  4. Air (R-729)

Answer

A. Ammonia (R-717)

Solution

Ammonia has excellent thermodynamic properties and is used in industrial refrigeration.

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