Monitoring Procedure for Compression Heat Pumps Driven by...

UMH. Pedro Vicente Quilespedro.vicente@umh.es

IEA SHC TASK53 2nd MEETING. Vasteras 7‐8th, October 2014

Monitoring Procedure for Compression

Heat Pumps Driven by Photovoltaic

Energy. Draft initial version

Prof. Dr. Pedro Vicente QuilesUniversidad Miguel Hernández de Elchepedro.vicente@umh.eshttp://dime.umh.e

1. To determine the primary energy savings, solar contribution, self consumed electricity

2. To identify the best practices hence of best design solutions in relationship with the climate conditions, the building features and use, occupation conditions and so on.

3. To calibrate numerical models that may be employed to achieve objectives 1 and 2 with minimum cost.

O B J E C T I V E S

The methodology presented in this document has been proposed with these restrictions:

1. To use on Heat Pumps driven by PV energy2. The compressor should be hermetic3. The method is for use on field applications4. The unit capacity is lower to 12 kW.

A P L I C A T I O N S

PV driven solar heating and cooling system of a HVAC installation

1 year measurements

E4 E3 E1

Q1QL,TANK

PV driven solar heating system of a DHW production installation

E4 E3 E1

Q1QL,TANK

QL,TANK

8 monthsmeasurements

E4 E3 E1

QL,TANK

MONITORING PROCEDURE

PARAMETERS

IEA SHC TASK53 2nd MEETING. Vasteras 7‐8th, October 2014 13

SYSTEM DESCRIPTION

KEY PERFORMANCE INDICATORS

7E1QCOP TOT,UNIT

5E1QCOP GRID,UNIT

HEAT PUMP

SYSTEM

2Q8E6E3Q1QQTOT

TANK,LTOT Q2Q8E6E3Q1QQ

ELECPE

FOSSIL

PEFOSSIL kWh3Q463.0

kWhkWh

11.1kWh95.03Q

8E6E3EeQ7EETOT

8E6E3EeQ7E8E6E3Q1Q

COPTOT

TOTTOT,SYSTEM

8E3EeQ5E8E6E3Q1Q

COPGRID

TOTGRID,SYSTEM

GRID,SYSTEMCOP)5.2/1(PER

SOLAR CONTRIBUTION

1(%)SC UNIT

8E8,2/6E3EeQ7E8E3EeQ5E

1(%)SCTOTAL

GRIDSYSTEM

KEY PERFORMANCE RATIOS

PRODUCTION FACTOR

Esol8.2/6E)5E7E(

(%)PFPV

If PV electricity is not exported to the grid:

If PV electricity is exported to the grid:

Esol8.2/6E7E4E

(%)PFPV

REFERENCE CONDITIONS

EXAMPLE

QL,TANK

E1=2.077 kWhE5=0.836 kWh

E6=1.235 kWhE7=1.678 kWh

Q1=6.547 kWhE6=1.235 kWhQTOT= Q1+E6= 7.782 kWh

Q2=6,603. kWhQL,TANK=1.152 kWhQTOT= Q2+QL,TANK= 7.755 kWh

REFERENCE CONDITIONS

TM,24h = 26.5ºC; TM,HPon = 29.9ºC ESOL/APV= 5.85 kWh/m2 day

TW,IN = 10.8º; TW,OUT= 53.8ºC

ANNEX A

THE INTERNAL METHOD

THE REAL THERMODYNAMICAL CYCLE

1. Energy Conservation on the compressor

)P/P(05.0775.0 EVAPCONDISO COMPI1O2RCOMP,ELE QhhmP

Calculation of mR

2. Volumetric Efficiency of the compressor

Calculation of mR

3. Equation of mR given by the manufacturer

To be done for the final document

Monitoring Procedure for Compression

Heat Pumps Driven by Photovoltaic

Energy. Draft initial version

Prof. Dr. Pedro Vicente QuilesUniversidad Miguel Hernández de Elchepedro.vicente@umh.eshttp://dime.umh.e

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