The grid of tubing mounted on the exterior back panel of a household refrigerator functions as_________________?
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Answer: A. condenser tubes
Explanation
The grid of tubing mounted on the exterior back panel of a household refrigerator functions as the condenser tubes. This exposed serpentine tubing rejects heat absorbed from the interior food compartment out into the surrounding room air. Natural convection currents circulate room air across the warm condenser grid to facilitate continuous heat rejection. Domestic refrigerators operate on a vapor-compression cycle comprising a compressor, condenser, expansion device, and evaporator. High-pressure refrigerant gas enters the condenser coils, where it rejects latent heat and condenses into a high-pressure liquid. Condenser design balances surface area and airflow characteristics to maximize heat rejection rates in confined kitchen spaces.
Option B evaporator tubes are located inside the refrigerated compartment to absorb heat from stored food items. Option C refrigerant cooling tubes is an imprecise term that does not describe the specific heat-rejecting condenser function. Option D capillary tubes act as throttling expansion devices rather than heat-rejecting exterior condenser coils.
- Subject
- Engineering
- Category
- Mechanical Engineering
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- —
- Difficulty
- medium
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