enhancing pv competitiveness with energy storage in buildings · umh. pedro vicente quiles...

UMH. Pedro Vicente [email protected]

IEA PVPS Task 1 at EU-PVSEC 2016 - Munich, GermanyTask53.iea-shc.org

Enhancing PV competitiveness with energy storage in buildings

Prof. Dr. Pedro V. QuilesUniversidad Miguel Hernández de Elche

[email protected]://dime.umh.e

Task53.iea-shc.org



Heating

INTRODUCTION

120 liters at 60ºC

Demand =7 kWh/dayDemand =2500 kWh/yearDemand =25 kWh/year/m2

Demand =12 kWh/winterdayDemand =2500 kWh/yearDemand =25 kWh/year/m2

Domestic Hot Water

Thermal needs in Nearly Zero Energy Buildings



Heating and Cooling


INTRODUCTIONThermal needs in Nearly Zero Energy Buildings

120 liters at 60ºC


Domestic Hot Water



INTRODUCTIONBOILER + SOLAR THERMAL vs. HEAT PUMP + PV

BOILER +

SOLAR THERMAL

HEAT PUMP +

SOLAR PV

η=50% η=14%x3.5=50%

COP=3.51 kWhE

3.5 kWhT

SC=50-60%

VS.



OPERATING AGENT:Dr. Daniel [email protected]


Task53.iea-shc.orgTask53.iea-shc.org


Task53.iea-shc.org



THERMAL STORAGE

Why?

1st: To increase self consumption

7 kWh

9 kWh

vv

6 kWh

1 kWh8 kWh

2 kWh

THE GRID



THERMAL STORAGE

Why?

1st: To increase self consumption

7 kWh

9 kWh

vv

2 kWh

2 kWh

THE GRID

OPTIMUM!!



ETANK=0 kWh

T=60ºC

ETANK=12 kWh

T=60ºC

T=60ºC

T=60ºC

T=60ºC

T=10ºC

T=10ºC

T=10ºC

T=10ºC

T=10ºC

ETANK=5 kWh

T=30ºC

T=30ºC

T=30ºC

T=30ºC

T=30ºC

STORAGE = 12 kWh

THERMAL STORAGE FOR DOMESTIC HOT WATER

Demand = 120 liters at 60ºC

Vol =200 liters



ETANK=5 kWh

T=40ºC

ETANK=5 kWh

T=30ºC

T=35ºC

T=25ºC

T=20ºC

T=30ºC

T=30ºC

T=30ºC

T=30ºC

T=30ºC

TANK STRATIFICATION




ETANK=12 kWh

T=40ºC

ETANK=5 kWh

T=30ºC

T=35ºC

T=25ºC

T=20ºC

T=60ºC

T=60ºC

T=60ºC

T=60ºC

T=60ºC

16:00 10:00

ETANK=12 kWh

T=60ºC

T=60ºC

T=60ºC

T=60ºC

T=60ºC

16:0018 h 6 h

STORAGE = 12 ‐ 5 = 7 kWh




PROTOTYPEUMH-DHW1

230V24V

ELOS=1.6

EDHW=6.2

EU,TOT=7.8 kWh/day

EU,HT=1.1

EU,HP=6.7EL,HT=1.1

EL,HP=2.0

EL,GRID=0.9EL,PV=2.2

EU,TOT=7.8 kWh/day

EL,GRID=0.9 kWh/day

PEnR=1.8 kWhnRPE/day




0

2

4

6

8

10

12

14

16

18

HEATER BOILER HEAT‐PUMP BOILER + ST HEAT‐PUMP + PV

kWh(nRPE)


EU,TOT=7.8 kWh/day for DHW



PROTOTYPEUMH-DHW1

230V24V

Vol =200 liters

Q = 1.5 kW

PE= 0.5 kWE




230V24V

Vol =100 liters

Q = 1.0 kW

PE= 0.35 kWE

E=3 kWhE

PROTOTYPEUMH-DHW2

Why?1st: To increase self consumption

2nd: To reduce unit size




Grid

DESING CHARACTERISTICS• ELECTRICITY EXPORT: YES/NO• BATTERIES: YES/NO• THERMAL STORAGE: YES/NO• COMPRESOR: INVERTER, W=CONSTANT• IMPROVED CONTROL (SOLAR)

DIMENSIONS:• NUMBER OF PV PANELS• COMPRESOR POWER• BATTERIES: Ah • STORAGE CAPACITY (liters)




ETANK=37 kWh

T=40ºC

ETANK=28 kWh

T=40ºC

T=40ºC

T=40ºC

T=40ºC

T=50ºC

T=50ºC

T=50ºC

T=50ºC

T=50ºC

16:00 10:00

ETANK=37 kWh

T=50ºC

T=50ºC

T=50ºC

T=50ºC

T=50ºC

16:0018 h 6 h

Heating = 9 kWh

Unit= 12 kWh

Vol = 800 liters

THERMAL STORAGE FOR HEATING

Heating = 3 kWh

Demand = 12 kWh, Storage = 9 kWh



230V

SPACEHEATING

Vol =800 liters

Q = 3 kW

PE= 1 kWE

SPACECOOLING


PHASECHANGEMATERIALSARE AN OPTION!



BUILDING AS STORAGE

3 X 4 =12 m2

DT = 25‐22 = 3ºC

ESTOR= 0.5 kWh in 12m2

W= 50 kg/m2




PV HEAT PUMPS FOR AIRCOINDITIONING



INSTALLATIONCables connection

200-300 Vdc

24 Vdc

PV HEAT PUMPS FOR AIRCOINDITIONING



Thermal Storage is a good idea, because:

1st: Increases self consumption

2nd: Reduces unit sizes: lower power is better!

CONCLUSIONS

Heat pump + Photovoltaics is a good idea, because:

1st: It is very efficient

2nd: It is a simple and very reliable system

HP + PV + Storage design must be done specifically



Enhancing PV competitiveness with energy storage in buildings

Prof. Dr. Pedro V. QuilesUniversidad Miguel Hernández de Elche

[email protected]://dime.umh.e

Task53.iea-shc.org

enhancing pv competitiveness with energy storage in buildings · umh. pedro vicente quiles...

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