Tandem Scroll Compressor Arrangements
A tandem scroll arrangement generally uses two compatible compressors operating in parallel on a common circuit. It is distinct from a series arrangement that compresses refrigerant in successive stages.
Technical assessment
Staged operation can help match changing demand. Oil balancing, piping, minimum run times and approved combinations require attention. Two compressors do not by themselves provide full system redundancy.
Information needed for selection
Provide the application, operating hours, cooling load, entering and leaving liquid temperatures, fluid type and concentration, flow, site location and environmental conditions. A nominal capacity alone does not replace a detailed equipment selection.
Frequently asked question
Does this guide replace a product performance sheet?
No. It explains selection inputs and technical limits. Confirm the final model, capacity and options through a manufacturer selection at the actual operating conditions.
Related guides
Chiller Capacity and Water Flow Calculation · Chiller Prices and Quotation Guide
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Technical sources
ASHRAE — Liquid-Chilling Systems · Danfoss — Scroll application guidelines