Supplemental cooling system load control using random start of first defrost cycle

Methods, apparatus, and systems for load control for cooling systems are provided. Coolant flows through a plurality of cooling units in a cooling system. The coolant flow is halted for each cooling unit that is undergoing a defrost cycle. Each cooling unit is configured to start a first defrost cyc...

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Bibliographische Detailangaben
Hauptverfasser:	Tang, Benjamin, Zheng, Peter, Brunter, Randy
Format:	Patent
Sprache:	eng
Schlagworte:	AIRCRAFT ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSIONTRANSMISSIONS IN AIRCRAFT AVIATION BLASTING COLD ROOMS COMBINED HEATING AND REFRIGERATION SYSTEMS COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHERSUBCLASS COSMONAUTICS EQUIPMENT FOR FITTING IN OR TO AIRCRAFT FLYING SUITS HEAT PUMP SYSTEMS HEATING ICE-BOXES LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING PARACHUTES PERFORMING OPERATIONS REFRIGERATION OR COOLING REFRIGERATORS TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	Methods, apparatus, and systems for load control for cooling systems are provided. Coolant flows through a plurality of cooling units in a cooling system. The coolant flow is halted for each cooling unit that is undergoing a defrost cycle. Each cooling unit is configured to start a first defrost cycle at a random time within a predetermined time range after the cooling unit is started or powered on. After the first random start defrost cycle, a regular periodic defrost cycle may be maintained. Thus, the cooling units may be powered on simultaneously while still providing desynchronized defrost cycles, enabling the cooling system to maintain adequate coolant flow and heat load to avoid deleterious stop and restart cycles.