AS/NZS 5125.1:2010

AS/NZS 5125.1:2010 HEAT PUMP WATER HEATERS-PERFORMANCE ASSESSMENT - AIR SOURCE HEAT PUMP WATER HEATERS

PREFACE

CONTENTS

SECTION 1 SCOPE AND APPLICATION

1.1 SCOPE

1.2 APPLICATION

1.3 REFERENCED DOCUMENTS

1.4 DEFINITIONS

1.4.1 Auxiliary boosting

1.4.2 Electrical power input

1.4.3 Heat pump water heater

1.4.4 Integral heat pump

1.4.5 Moving average

1.4.6 Stand-alone heat pump

1.4.7 Standby electrical power

1.4.8 Test point period

1.4.9 Thermal capacity

1.5 NOTATION

SECTION 2 TEST CONDITIONS

2.1 SCOPE OF SECTION

2.2 TEST CHAMBER

2.3 PRODUCT INSTALLATION

2.4 STAND-ALONE HEAT PUMP OPERATION

2.5 SENSORS AND MEASUREMENTS

2.5.1 Temperature sensors

2.5.2 Electrical power

2.5.3 Stand-by electrical power

SECTION 3 TEST PROCEDURE

3.1 SCOPE OF SECTION

3.2 TEST CONDITIONS

3.2.1 General

3.2.2 Maximum heat pump operating temperature during test

3.3 TEST POINT PERIOD

3.4 MEASUREMENTS

SECTION 4 CALCULATIONS

4.1 SCOPE OF SECTION

4.2 SELECTION OF TEST POINT PERIODS

4.3 THERMAL CAPACITY

4.4 COEFFICIENT OF PERFORMANCE

4.5 DATA CORRELATION

4.5.1 General

4.5.2 Test point data selection

SECTION 5 LOW TEMPERATURE PERFORMANCE

5.1 SCOPE OF SECTION

5.2 LOW TEMPERATURE CLASSIFICATION

5.3 LOW TEMPERATURE DELIVERY TEST

5.3.1 Requirement

5.3.2 Low temperature Class A heat pumps

5.3.3 Low temperature operation penalty

SECTION 6 REPORTING

6.1 SCOPE OF SECTION

6.2 PRODUCT DESCRIPTION

6.3 DATA REPORTING

6.3.1 One minute data

6.3.2 Test period data

6.3.3 Calculated values

6.3.4 Regression coefficients

APPENDIX A - TEST CHAMBER AND INSTRUMENTATION

A1 SCOPE

A2 TEST CHAMBER

A2.1 General

A2.2 Air temperature and circulation

A2.3 Water properties

A2.4 Radiation

A2.5 Electricity supply

A3 PRODUCT INSTALLATION

A3.1 General

A3.2 Location of temperature sensors in the storage tank

A3.3 Location of temperature sensors in stand-alone heat pump systems

A3.4 Tank mixing in stand-alone heat pump systems

A4 MEASUREMENT ACCURACY

A4.1 Air temperature

A4.2 Water temperature

A4.3 Calibration range

A4.4 Electrical power and energy consumption

APPENDIX B - REGRESSION

APPENDIX C - PROPERTIES OF WATER

APPENDIX D - ERRORS

D1 SCOPE

D2 ERROR IN DETERMINATION OF THERMAL CAPACITY

D3 ERROR IN DETERMINATION OF COP

APPENDIX E - CONFIGURATION AND DETERMINATION OF TIME CONSTANT FOR AIR TEMPERATURE SENSORS

E1 SCOPE

E2 PRINCIPLE-MEASUREMENT OF AIR TEMPERATURE

E3 CONFIGURATION OF AIR TEMPERATURE SENSOR

E4 AIR TEMPERATURE SENSOR TIME CONSTANT

APPENDIX F - DATA REPORTING

F1 SCOPE

F2 TEST LABORATORY

F3 PRODUCT DESCRIPTION

F3.1 Photograph of product under test

F3.2 Schematic drawings of product construction

F4 TEST POINT PERIOD AVERAGE MEASURED DATA

F5 TEST POINT PERIOD CALCULATED VALUES

F6 REGRESSION COEFFICIENTS

F6.1 Comparison of calculated and regression values of COP and Power

F7 LOW TEMPERATURE OPERATION PENALTY