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Published byVirgil Fleming Modified over 9 years ago
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Page 1 IceCold Pilot Study
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Page 2 Pilot Candidate: Siemens 501 Fountain Parkway 32 RTUs provide cooling to 170,000 SF of Office and Production Spaces 21 of these RTUs are Electrically Fed from 2 Dedicated Electrical Panels Pilot Test: Introduce IceCOLD Catalyst to these Units While Logging Electrical Consumption of the Dedicated Panels Before and After Installation 2 Sources of Heat Gain: Internal (Manufacturing/People – Fixed / Constant Load) and External (Weather Based) Compare Normalized Electrical Consumption of Pre- and Post- IceCOLD Addition Pilot Study Overview
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Page 3 Concept: Evaluate kWh / CDD Before and After Installation Isolate RTUs to be Monitored 3 rd Party Electrical Monitoring – Pre and Post Installation Track Local Weather Variables (Min/Max Temp, CDD) Confirm No Significant Variance Production Loads Validate Strong Relationship Between Electrical Consumption and Weather “IMVP Option B” Compliant M&V Methodology Strong Correlation with Weather Dranetz PX – 5
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Page 4 15% Aggregate Reduction Panel 2: Impact of Economizers Results Both Panels Total Period KWH/CDD vs time 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5/65/75/85/9 5/105/115/125/135/145/155/165/175/185/195/205/215/225/235/245/255/265/275/285/295/305/31 6/1 KWH/CDDLinear (KWH/CDD)
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Page 5 Under Sized Systems – If systems are undersized for the space / application served and cannot meet set points, then reductions in compressor cycling may not occur (although the space condition may improve). Implemented Control Strategies: Strategies such as free cooling (economizers) or temperature setbacks, etc, may reduce the impact of the savings potential. “New” vs. “Old” Equipment: New equipment has less fouling, potentially reducing the impact of the catalyst. (Many Panel 2 RTUs are recent replacements; Panel 1 RTUs >15 Years Old). New equipment more likely to include economizers, etc. For M&V: Must “Isolate” the equipment for comparison (so loads aren’t “shifted” from monitored units to others), account for all cooling loads (variability), show strong correlation for comparisons. Considerations for Future Candidates
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Page 6 Equipment Inventory (Mfg / Model / Tonnage / Nameplate Data) Control Strategies Implemented (Economizers, Scheduling, Setbacks, etc) Function of Areas Served (Office, Production, etc) Building Location,etc M&V Requirement? Data Needed for CSI Evaluations
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