EasyAssistant Engineer (Electrical), Class-2, Road and Building Department2025✓ Editorially verified

Which component in a central air conditioning system is responsible for removing heat from the refrigerant?

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Answer & Explanation

Correct AnswerD. Condenser

Quick Explanation

The condenser removes heat from the high-pressure refrigerant and rejects it to outdoor air or cooling water. During this process refrigerant changes from high-pressure vapor toward liquid before entering the expansion device.

Formula / Key Relation

Refrigeration cycle:

Evaporator → Compressor → Condenser → Expansion valve → Evaporator

Q_condenser = Q_evaporator + W_compressor

Detailed Explanation

Concept & Reasoning

In the vapor-compression cycle, the evaporator absorbs heat from the conditioned space, the compressor raises refrigerant pressure/temperature, the condenser rejects both absorbed heat and compressor work, and the expansion valve drops pressure before the evaporator.

How to Solve It in the Exam

Evaporator absorbs; condenser rejects.

Important Exam Point

Follow the heat direction rather than only refrigerant phase names.

Related Revision Path

This question sits in the revision path Building Electrical Services → HVAC → Refrigeration Cycle .

Condenser Heat Rejection explanatory diagram

Quick Trick

Evaporator absorbs; condenser rejects.

Common Mistake

Selecting evaporator because it is also a heat exchanger—it removes heat from the room, not from the refrigerant to outdoors.

Exam Tip

Follow the heat direction rather than only refrigerant phase names.

SEO + Knowledge GraphRelated PYQs & Exam ContextExam path, knowledge path and deeper practice links.

Exam Path

Knowledge Path

Study concept · Condenser Heat Rejection →Practice concept Practice topic

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