unit 86.docx - Justin Guerrero Unit 86 Supermarket...

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Justin Guerrero4/8/2020Unit 86 Supermarket Equipment Review1. The most common type of system used in traditional supermarket is a multiple DX (multiplex system).2. Compressor racks mostly have three – five compressors.3. Will provide more combinations that include 0, 10, 20, 30, 40, or 50.4. Cycling fans, condenser bypass, or split condensers. 5. Pulse width modulated expansion valves use a simple solenoid valve circuit to control the refrigerant flow.6. There are several different defrost methods that can be used such asnatural defrost, electric heat, or hot gas.7. Adaptive defrost systems initiate based upon measured parameters rather than a timed cycle.8. Case coil secondary loop system eliminates the need for long pipe runs of refrigerant as required in multiplex direct expansion systems that reduces the amount of charge required.9. Water-based inhibited potassium format salt solution.10. Distributed systems utilize direct expansion case coils similar to

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