AS/NZS 4776.1.2:2008
Liquid-chilling packages using the vapour compression cycle - Part 1.2: Method of rating and testing for performance - Testing
Prescribes the method of testing liquid-chilling packages using the vapour compression cycle to determine the capacity, power and efficiency of equipment under a specific set of conditions. It is not the intent of this Standard to provide for testing in-field installations, where steadystate and uniform conditions are difficult to achieve and provisions for measurements are not made.
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AS/NZS 4776.1.2:2008 LIQUID-CHILLING PACKAGES USING THE VAPOUR COMPRESSION CYCLE - METHOD OF RATING AND TESTING FOR...
PREFACE
CONTENTS
1 SCOPE
2 OBJECTIVE
3 NORMATIVE REFERENCE
4 DEFINITIONS
5 BASIC PRINCIPLES
5.1 Cooling capacity
5.2 Water-cooled condenser heat rejection
6 TEST METHOD
6.1 General
6.2 Conditions of heat transfer surfaces
6.3 Measurements
6.4 Units with integral pumps
7 TEST VERIFICATION
7.1 General
7.2 Heat balance substantiating test (calculation of the heat balance)
7.3 Percentage heat balance
8 INSTRUMENTATION-ACCURACY
9 TEST PROCEDURE
9.1 General
9.2 Steady-state conditions
9.3 Output measurement of cooling capacity and power input
9.4 Calculation of results
9.4.1 Cooling capacity and heat rejection capacity
9.4.2 Power consumption
10 DATA TO BE RECORDED
10.1 Measurement data
10.2 Auxiliary information to be recorded
11 FOULING CONSIDERATIONS FOR TESTING
12 VERIFICATION TEST TOLERANCE ON HEAT BALANCE
APPENDIX A - CONCURRENT REDUNDANT VERIFICATION TEST FOR AIR-COOLED OR EVAPORATIVELY COOLED CONDENSER UNITS
A1 GENERAL
A2 CAPACITY CALCULATION METHOD
A3 POWER CALCULATION METHOD
A4 EFFICIENCY CALCULATION METHOD
APPENDIX B - METHOD FOR SIMULATING THE FOULING FACTOR ALLOWANCE
B1 SCOPE
B2 FOULING ALLOWANCE PROCEDURE
B2.1 Derivation of log mean temperature difference (LMTD)
B2.2 Derivation of incremental log mean temperature difference (ILMTD)
B2.3 Example-Condenser fouling
B3 SYMBOLS AND SUBSCRIPTS
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Related Information
Energy Efficiency (Energy Using Products) Regulations 2002
Ministry: Ministry of Business Innovation and Employment - Energy Resources and Markets (ERM)
Section: Schedule 1
Citation context:Listed as a testing Standard for chillers.
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AS/NZS 4776.1.2:2008 LIQUID-CHILLING PACKAGES USING THE VAPOUR COMPRESSION CYCLE - METHOD OF RATING AND TESTING FOR...
PREFACE
CONTENTS
1 SCOPE
2 OBJECTIVE
3 NORMATIVE REFERENCE
4 DEFINITIONS
5 BASIC PRINCIPLES
5.1 Cooling capacity
5.2 Water-cooled condenser heat rejection
6 TEST METHOD
6.1 General
6.2 Conditions of heat transfer surfaces
6.3 Measurements
6.4 Units with integral pumps
7 TEST VERIFICATION
7.1 General
7.2 Heat balance substantiating test (calculation of the heat balance)
7.3 Percentage heat balance
8 INSTRUMENTATION-ACCURACY
9 TEST PROCEDURE
9.1 General
9.2 Steady-state conditions
9.3 Output measurement of cooling capacity and power input
9.4 Calculation of results
9.4.1 Cooling capacity and heat rejection capacity
9.4.2 Power consumption
10 DATA TO BE RECORDED
10.1 Measurement data
10.2 Auxiliary information to be recorded
11 FOULING CONSIDERATIONS FOR TESTING
12 VERIFICATION TEST TOLERANCE ON HEAT BALANCE
APPENDIX A - CONCURRENT REDUNDANT VERIFICATION TEST FOR AIR-COOLED OR EVAPORATIVELY COOLED CONDENSER UNITS
A1 GENERAL
A2 CAPACITY CALCULATION METHOD
A3 POWER CALCULATION METHOD
A4 EFFICIENCY CALCULATION METHOD
APPENDIX B - METHOD FOR SIMULATING THE FOULING FACTOR ALLOWANCE
B1 SCOPE
B2 FOULING ALLOWANCE PROCEDURE
B2.1 Derivation of log mean temperature difference (LMTD)
B2.2 Derivation of incremental log mean temperature difference (ILMTD)
B2.3 Example-Condenser fouling
B3 SYMBOLS AND SUBSCRIPTS
AS/NZS 4776.1.2:2008
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