1. Slide 1 B O N N E V I L L E P O W E R A D M I N I S T R A T I O N Variable Capacity Heat Pump RTF Sub-Committee June 12, 2014 Mira Vowles, P.E., CEM Emerging Technology Project Manager BPA Energy Efficiency

2. Slide 2 B O N N E V I L L E P O W E R A D M I N I S T R A T I O N Meeting Topics 1.VC HP Overview (Mira) 2.VC HP Load Based Testing (Ron) 3.VC HP Field Test Results (Tianzhen) Plus if time allows: School VRF energy-savings (Mira) Other VRF research projects (all) Suggestions for future meetings (all)

3. Slide 3 B O N N E V I L L E P O W E R A D M I N I S T R A T I O N Variable Capacity Heat Pumps (VC HP = VRF + DHP) + Ductless Heat Pumps Variable Refrigerant Flow Heat Pump System

4. Slide 4 B O N N E V I L L E P O W E R A D M I N I S T R A T I O N Variable Refrigerant Flow (VRF) Systems VRF systems, either heat-pump or heat-recovery models, provide heating and air-conditioning, with: 1.Inverter driven outdoor-unit compressors and condenser fans, providing improved part-load and low-ambient performance, 2.Multiple indoor-units with multi-speed fans, electronic expansion valves and integrated thermostats, 3. Refrigerant piping network for heat transfer, 4.Integrated control system, and 5.Ventilation provided by VRF system, natural ventilation or a dedicated outside air system (DOAS).

5. Slide 5 B O N N E V I L L E P O W E R A D M I N I S T R A T I O N VC HP Sub-Committee 1.Sub-Committee of the Regional Technical Forum (RTF) 2.Purpose: develop and recommend VC HP measures with a)high consensus methodology to estimate and verify electrical savings b)specification for cost effective installations that ensures persistent savings 3.Minutes and presentations are posted at: http://www.nwcouncil.org/energy/rtf/subcommittees/vchp/Default.htm http://www.nwcouncil.org/energy/rtf/subcommittees/vchp/Default.htm

6. Slide 6 B O N N E V I L L E P O W E R A D M I N I S T R A T I O N VC HP Load Based Testing Ron Domitrovic, with EPRI

7. Slide 7 B O N N E V I L L E P O W E R A D M I N I S T R A T I O N VC HP Field Test Results Tianzhen Hong, with LBNL

8. Slide 8 B O N N E V I L L E P O W E R A D M I N I S T R A T I O N Next Meeting 7/23/14 at 9 am Suggestions for agenda items?

9. Slide 9 B O N N E V I L L E P O W E R A D M I N I S T R A T I O N