Overview:
- Definition: Commercial refrigeration systems are used in business settings, such as retail locations (e.g., restaurants, grocery stores), to control the environment of perishable products rather than human comfort.
- Comparison with Domestic Refrigeration:
- Similar major components.
- Larger capacity and different applications.
- Cold Chain: The process of keeping food and drugs cold from manufacturing to delivery, involving various business customers with different goals.
Applications:
- Hotels and Restaurants: Refrigerators keep ingredients fresh until ready to serve.
- Clinics and Hospitals: Cold storage for medicines, including vaccines and other drugs for patients and researchers.
- Retail Settings: Reach-in refrigerators for product display (e.g., grocery stores, cafes, delis, florists).
- Supermarkets: Use rack systems with multiple compressors and evaporators to maintain different product temperatures.
- Refrigerated Transportation: Trucks, trains, ships, and planes transport cold products over long distances, often serviced by vehicle mechanics.
Maintenance:
- Common Maintenance Tasks: Coil cleaning, drain servicing, verifying proper refrigerant charge, inspecting electrical connections, and measuring electrical values (voltage, current, resistance, capacitance).
- Defrosting Needs:
- Medium and low temperature systems require automatic defrost systems.
- High temperature systems operate above freezing and don't require defrosting.
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