AS/NZS 5125.1:2010
Heat pump water heaters - Performance assessment - Air source heat pump water heaters
Specifies the test conditions and test procedures for determining the energy performance characteristics of single-circuit air source heat pump water heaters. It applies to both stand-alone heat pump water heaters and heat pumps with the condenser integral with a storage tank. The variation of coefficient of performance (COP) and electric power use as a function of operating conditions are determined so that the results can be used in annual performance calculations of heat pump applications for sanitary hot water supply applications. This Standard also specifies methods of testing and reporting the energy performance characteristics of electrical driven heat pumps using a single refrigeration circuit and having one evaporator and one condenser. Products with two evaporators that operate exclusively may also be tested in each mode.
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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
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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
AS/NZS 5125.1:2010
Online Library subscription information
Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team.