10 years of heat pump monitoring in germanyheatpumpingtechnologies.org/archive/hpc2017/wp... ·...
TRANSCRIPT
Outcomes of several monitoring campaigns.
10 YEARS OF HEAT PUMP MONITORING IN GERMANY
Marek MiaraFraunhofer-Institut für Solare Energiesysteme ISE12th IEA Heat Pump ConferenceRotterdam, 17.05.2017
www.ise.fraunhofer.de
69 Fraunhofer institutes
Staff totals more than 24 500
Established: 1981
Staff totals more than 1100
2015 Budget: € 73 million
Energy Demand of a Building versus Heat Pump Efficiency
Energy demand
Efficiency
low high low
0 30 60 120 kWh/m²a
Newly-build and existing buildings
Single family houses, 100-300 m² (1100-3200 sq ft)
Heat pumps with air and ground as a heat source
All units covering heating and domestic hot water
Various manufactures, heating power 6 kW to 25 kW
Characteristics of the Projects
energysupplier
7HPcompanies,2energysupp.,Gvfunding
12heatpumpscompanies
9HPcompanies,3energysupp.,Gvfunding
num
ber o
f hea
t pum
p in
stal
latio
ns
HP Efficiency
Smart heat pumps in Existing BuildingsHP Monitor
HP in ExistingBuildings
Main Goals
assessment of the efficiency of new heat pumps in residential buildings
finding the way to optimize heat pump systems, their installation and control procedures
Heat sources of the analysed heat pumps
Heat sources of the analysed heat pumps
Boundary for the Seasonal Performance Factor SPF
Average values and ranges of the SPF
1,0 2,0 3,0 4,0 5,0 6,03,4 6,8 10,2 13,6 17,1 23,5[BTU/Wh]
2,2 4,2
2,3 3,4
2,1 3,3
2,2 4,3
3,1 5,1
3,0 5,4
2,63,3
3,92,9
4,0
3,1 3,2*
4,3**groupofnewunits
outsideairheatpumps groundheatpumps numberofunits
35
projectname
HPinExistingBuildings
HPEfficiency
HPMonitor
newbuildings
SeasonalPerformanceFactor(SPF)of:evaluationperiod
01.2008-12.2009
07.2007-06.2010
07.2012-06.2013
36
18
56
35
45
Average values and ranges of the SPF
1,0 2,0 3,0 4,0 5,0 6,03,4 6,8 10,2 13,6 17,1 23,5[BTU/Wh]
2,2 4,2
2,3 3,4
2,1 3,3
2,2 4,3
3,1 5,1
3,0 5,4
2,63,3
3,92,9
4,0
3,1 3,2*
4,3**groupofnewunits
outsideairheatpumps groundheatpumps numberofunits
35
projectname
HPinExistingBuildings
HPEfficiency
HPMonitor
newbuildings
SeasonalPerformanceFactor(SPF)of:evaluationperiod
01.2008-12.2009
07.2007-06.2010
07.2012-06.2013
36
18
56
35
45
Average values and ranges of the SPF
1,0 2,0 3,0 4,0 5,0 6,03,4 6,8 10,2 13,6 17,1 23,5[BTU/Wh]
2,2 4,2
2,3 3,4
2,1 3,3
2,2 4,3
3,1 5,1
3,0 5,4
2,63,3
3,92,9
4,0
3,1 3,2*
4,3**groupofnewunits
outsideairheatpumps groundheatpumps numberofunits
35
projectname
HPinExistingBuildings
HPEfficiency
HPMonitor
newbuildings
SeasonalPerformanceFactor(SPF)of:evaluationperiod
01.2008-12.2009
07.2007-06.2010
07.2012-06.2013
36
18
56
35
45
Example of a hydronic system designGood result
Example of a hydronic system designGood result
Example of a hydronic system designPoor result
Example of a hydronic system designPoor result
COPSCOP EER
SEERSPF
HSPF
η, (eta)
APF
JAZSPF
JAZPerformance Figures
CSPF
Performance Figures
1. group 2. group 3. group
measured under certain conditions
calculated with certain method
measured under various conditions for
certain period
calculation
para
met
er
Quasi-stationary operating conditions method
n Based on EN 14511 requirementsn Data evaluation to find the quasi-stationary periodsn COP values for each temperature points have been interpolated based on 4
laboratory COP valuesn Deviation comparison of the COPQS values and interpolated COP values
Characteristics of quasi-stationary conditions for a single ground source heat pump system
Characteristics of quasi-stationary conditions for a single ground source heat pump system
Characteristics of quasi-stationary conditions for a single ground source heat pump system
Deviation of the COPQS values and interpolated COP values(1 installation)
Group evaluation and limitations of the method
n In both types of the heat source - air and ground - the average deviation between laboratory COP values and field measured COPQS values is rather small and amounts to less than 10%
n The first evaluation shows in general that the air to water units run in the field with higher efficiency than in the laboratory, opposite to the ground coupled heat pumps
n The efficiency measured in the laboratory under stationary conditions can be confirmed in the field in the majority of cases
n Limitations of the quasi-stationary conditions method
Summary
Heat pumps work well.
Heat pumps usually work well.
Heat pumps work well if they are a part of a carefully designed, preferably simple system, well installed by properly educated and skilled installers and used by aware and well-
behaving end users.
www.wp-monitoring.de
Thank [email protected]