What are the desired characteristics of a refrigerator refrigerant___________________?
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Answer: C. high latent heat
Explanation
A high latent heat of vaporization allows refrigerants to absorb massive quantities of thermal energy during phase change. Refrigeration systems depend on phase change enthalpy rather than sensible temperature changes to achieve efficient cooling performance. Selecting working fluids with high latent heat values minimizes required mass flow rates through the closed compressor loop. Latent heat represents the thermal energy absorbed or released during a constant temperature phase transition process in engineering thermodynamics. Common synthetic refrigerants are engineered specifically to maximize latent enthalpy values while maintaining safe operating pressures and temperatures. The fundamental refrigeration cycle relies entirely on evaporating liquid refrigerant inside evaporator coils to absorb environmental heat.
Sensible heat involves temperature changes without phase transitions, making it far less effective for bulk refrigerant cooling applications. Total heat simply combines latent and sensible components without highlighting the specific phase change mechanism required for refrigeration. Low latent heat capacity would force systems to circulate impractical volumes of liquid refrigerant to achieve desired cooling rates.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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