Next-Gen Heat Pump
Technologies

Ron Domitrovic
November 12, 2019

© 2017 Electric Power Research Institute, Inc. All rights reserved.

Introduction▪ History▪ Next-Gen Heat Pump Specification▪ Next-Gen Heat Pumps as a Class▪ Beyond2© 2017 Electric Power Research Institute, Inc. All rights reserved.

Next-Gen Heat Pumps▪ A Bit of History3© 2017 Electric Power Research Institute, Inc. All rights reserved.

Heat Pump Technology Evolution
Next Generation of Advanced Variable Capacity HPs

Fixed Speed
Systems(does the job)

Typical systems currently installedin single-family residences—
standard efficiency

Variable CapacitySystems(does the job well)

Variable speed components
enable higher efficiency andoperational flexibility

Next-gen HP
System(changes the industry)4© 2017 Electric Power Research Institute, Inc. All rights reserved.

Connectivity and highheating capacity enable
new and widespread
application

Defining Needs▪ New energy efficient end use devices to feed programs▪ Better demand response▪ Efficient electrification options▪ Summer peak reduction▪ Winter peak reduction▪ Flexibility for matching system dynamics▪ Other….
5© 2017 Electric Power Research Institute, Inc. All rights reserved.

Matching Attributes to Needs+=6© 2017 Electric Power Research Institute, Inc. All rights reserved.

EPRI Next-Gen HP Research Efforts
EPRI TI Breakthrough Next-Gen Project

EPIC California Next-Gen HP Project

Heat Pump Collaborative
Collaboration with Manufacturers

Deployments

7© 2017 Electric Power Research Institute, Inc. All rights reserved.

Demand Response Event
A baseline and DR event of a variable-speed system
37%

Avg. COP: 5.05

Avg. COP: 6.91
59%

Avg. kW: 1.56

Avg. kW: 0.64
44%

Avg. Cap: 7.89 kW

Avg. Cap: 4.39 kW

Baseline

Demand Response8© 2017 Electric Power Research Institute, Inc. All rights reserved.

Existing Markets-Heating*Includes heat pumps
Source: 2009 Residential Energy Consumption Survey, U.S. Energy Information Administration

Very
Cold/Cold

MixedHumid

MixedDry/Hot Dry

HotHumidMarineTotal(USA)# of Homes (millions)

38.8

35.4

14.1

19.1

6.3

113.6

# Heat Pumps

0.8

4.7

0.9

3

0.4

9.8

% Heat Pumps

2%

13%

7%

17%

7%

9%

# Electricity*

5.6

13.6

4.1

12.4

2.5

38.2

# Natural Gas

24.8

15.5

7.7

4.6

3.1

55.7

# Fuel Oil

4.1

2.7

n/an/an/a

6.8# Propane

2.4

2.2

0.3

0.50.1

5.59© 2017 Electric Power Research Institute, Inc. All rights reserved.

Selected City Heating Requirements
Selected Cities

Minneapolis
DenverBaltimoreAtlantaSeattleAnnual Heating
Hours
5375
4920
4238
2992
5544

50
20.2%
26.4%
36.1%
46.2%
54.0%

40
21.1%
30.0%
30.2%
34.3%
38.2%

Outdoor Temperature Bin (F)
30
20
24.5%
19.1%
26.5%
13.7%
23.4%
8.0%
15.0%
4.1%
7.6%
0.2%

10
© 2017 Electric Power Research Institute, Inc. All rights reserved.

10
7.9%
2.9%
2.4%
0.3%
0.0%

Below 0
7.2%
0.5%
0.0%
0.0%
0.0%

Next-Gen Heat Pumps▪ EPRI’s Next-Gen HP Specification– Level 1 and Level 2– Non-binding guiding document– Available to the public11© 2017 Electric Power Research Institute, Inc. All rights reserved.

“Level 2” Next-Gen HP Specification▪ Thermal Performance Heating– Efficiency: HSPF 13; COP and capacity reported @ 17F and 5F– Capacity: 100% of Nominal @ 17F; 80% of Nominal @ 5F;– Backup:▪ load based or informed control scheme – to define better) –▪ (tier 1 plus some version of staged or SCR-controlled backup heat deployment)– Defrost:▪ (employs defrost reduction or frost mitigation technology)▪ Thermal Performance Cooling– Efficiency:▪ SEER 21▪ EER 15 @ 95F test condition▪ Reported capacity and efficiency data at 115F
– Capacity:▪ (adequate scaling of capacity with appropriate SHR maintenance)▪ Demand Response– Compliant with AHRI Demand Response Standard▪ Fault Detection/Diagnosis– Commissioning charge assist– Customer alert for system faults– Continuous performance analysis and notification
12© 2017 Electric Power Research Institute, Inc. All rights reserved.

Next-Gen Heat Pumps▪ As a Class of Technologies and Products

13© 2017 Electric Power Research Institute, Inc. All rights reserved.

14© 2017 Electric Power Research Institute, Inc. All rights reserved.

15© 2017 Electric Power Research Institute, Inc. All rights reserved.

Together…Shaping the Future of Electricity

16© 2017 Electric Power Research Institute, Inc. All rights reserved.