Premium Rooftop Unit (RTU) Retrofit Overview August 20, 2012 RTF RTU Working Group Mira Vowles, BPA 1.

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Presentation transcript:

Premium Rooftop Unit (RTU) Retrofit Overview August 20, 2012 RTF RTU Working Group Mira Vowles, BPA 1

Emerging Technology (ET) Field Tests  First Two ET Field Tests  Premium RTU Retrofit  VRF Systems 2

Example: Heat Pump Water Heaters Product Launched 2009 Convene advisory committee 2009 Northern Tier Specification Lab tests (NREL) Field tests (EPRI) 2011 Estimated energy savings potential assessment 2012 Program deployment BPA & NEEA NEEA emerging tech BPA E3T, EPRI BPA E3T, NREL BPA emerging tech BPA planning BPA programs

ET Field Test Web Page Dynamic list of new field tests  Eligibility requirements  number of installations  Pre-defined savings and  BPA provided M&V  Utility participation request link  Technology briefs  Marketing materials “Go Field Test” 4

Premium Rooftop Unit (RTU) Retrofits 5

6 Premium RTU = RCx + Retrofit + Replacement Premium RTU Retrofits –What?

1.Supply Fan Control Savings –Cycling –Multi-speed –VSD 2.Demand Controlled Ventilation 3.Premium economizer control Approved products:  Transformative Wave Technology’s Catalyst,  Honeywell JADE controller with DCV, VSD and speed controller,  KMC FlexStat  other products as approved 7

Premium RTU Retrofit Details  Unitary, single-zone RTU  with an economizer  greater than five tons of cooling capacity and  serving a commercial facility in BPA territory BPA ET Field Test Limited to 75 8

Premium RTU Retrofit Pre-defined Savings 9

Good Premium RTU Retrofit Applications (not required) 10  Long hours of occupancy,  High occupant density (# of people/SF),  Varying levels of occupancy,  High cooling loads,  Electric heat and  No energy management system  Applications: big-box retail, small-box retail, offices, grocery stores, gyms, fitness centers, places of assembly, auto dealerships, theaters, schools, casinos, bowling alleys and restaurants

Premium RTU Retrofit Research ?’s 1.What is the simplest, reliable method to quantify Premium RTU Retrofit savings? 2.Can the updated ECAM be used as the standard RTU protocol for Program evaluation? –What are the data requirements? 3.Are there other key variables affecting savings, besides OSA temperature and hours of occupancy? 4.Other? 11

Premium RTU Retrofit Research Plan Use the updated ECAM as a Provisional Standard Protocol calculator on up to 125 RTUs Research data requirements: i.True power, OSA temperature, plus other variables TBD ii.One year of weekly cycling, or 6 months of pre & post data »Recommend best practice for metering period iii.One minute interval 12

Premium RTU Retrofit Research Plan Potential RTUG interim presentation – fall/winter? –PNNL, DOE funded, Catalyst work »49 RTUs in PNW »up to 16 heat pumps –BPA ET Field Test status and analysis »up to 75 RTUs 13

Updated ECAM Premium RTU Retrofit Demonstration 14