AS 2813-1985

1 - AS 2813-1985 SOLAR WATER HEATERS-METHOD OF TEST FOR THERMAL PERFORMANCE-SIMULATOR METHOD
4 - PREFACE
5 - CONTENTS
6 - FOREWORD
7 - SECTION 1. SCOPE AND GENERAL
7 - 1.1 SCOPE.
7 - 1.2 APPLICATION.
7 - 1.3 REFERENCED DOCUMENTS.
7 - 1.4 DEFINITIONS.
7 - 1.4.1 Absorber
7 - 1.4.2 Angle of incidence
7 - 1.4.3 Angle of inclination
7 - 1.4.4 Class A operation
7 - 1.4.5 Class B operation
7 - 1.4.6 Close coupled solar waler heater
7 - 1.4.7 Collector
7 - 1.4.8 Collector aperture
7 - 1.4.9 Container
7 - 1.4.10 Divergence
7 - 1.4.11 Irradiance
7 - 1.4.12 Irradiation
7 - 1.4.13 Load
7 - 1.4.14 Solar water heater
8 - SECTION 2. TEST EQUIPMENT AND INSTRUMENTATION
8 - 2.1 GENERAL DESCRIPTION.
8 - 2.2 LAMP(S).
8 - 2.2.1 Spectral di stribution.
8 - 2.2.2 Life and output.
8 - 2.3 ADJUSTMENTS.
8 - 2.3.1 Collector inclination.
8 - 2.3.2 Incidence angle of radiation.
8 - 2.3.3 Aspect ratio.
8 - 2.3.4 Voltage adjustment.
8 - 2.4 UNIFORMITY OF IRRADIATION.
8 - 2.5 RADIATION.
9 - 2.6 WIND.
9 - 2.7 TEMPERATURE CONTROL.
9 - 2.8 INSTRUMENTATION.
9 - 2.8.1 General.
9 - 2.8.2 Flow rate control.
9 - 2.8.3 Supplementary energy meters.
9 - 2.8.4 Draw-off control.
9 - 2.8.5 Thermal demand (heat metering).
9 - 2.8.6 Measurement of irradiance.
9 - 2.9 SYSTEM DIMENSIONAL REQUIREMENTS.
10 - SECTION 3. TEST CONDITIONS
10 - 3.1 PRE-TEST AND AVERAGE DAY TESTS.
10 - 3.1.1 Solar irradiation.
10 - 3.1.2 Ambient temperature.
10 - 3.1.3 Wind.
10 - 3.1.4 Solar collector slope.
10 - 3.1.5 Cold water.
10 - 3.2 NON-SOLAR TEST.
10 - 3.2.1 Radiation.
10 - 3.2.2 Ambient temperature.
10 - 3.2.3 Wind.
10 - 3.2.4 Solar collector slope.
10 - 3.2.5 Cold water.
10 - 3.3 GENERAL.
11 - SECTION 4. TEST PROCEDURE
11 - 4.1 GENERAL.
11 - 4.2 PRELIMINARY EVALUATION.
12 - 4.3 PRE-TEST.
12 - 4.3.1 Pre-test Day 1.
12 - 4.3.2 Pre-test Day 2.
12 - 4.3.3 Pre-test Day 3.
12 - 4.3.4 Interpretation and calculations.
13 - 4.4 AVERAGE DAY TEST.
13 - 4.4.1 Test Day 1.
13 - 4.4.2 Test Day 2.
13 - 4.4.3 Test Day 3.
13 - 4.4.4 Test Day 4.
13 - 4.4.5 Test Day 5.
13 - 4.4.6 Test Day 6.
13 - 4.5 NON-SOLAR TEST (BAD WEATHER TEST).
13 - 4.5.1 General.
13 - 4.5.2 Non-solar Test Day 1.
13 - 4.5.3 Non-solar Test Day 2.
13 - 4.5.4 Non-solar Test Day 3.
13 - 4.5.5 Non-solar Test Day 4.
13 - 4.5.6 Non-solar Test Day 5.
13 - 4.5.7 Non-solar Test Day 6.
14 - 4.6 PRESENTATION OF RESULTS.
15 - APPENDIX A - DAILY SIMULATED RADIATION PROFILE
17 - APPENDIX B - IDENTIFICATION DETAILS FOR SOLAR WATER HEATERS SUBMITTED FOR TYPE TESTING
17 - GENERAL DESCRIPTION.
17 - WATER SYSTEM.
17 - CONSTRUCTION-CONTAINER.
19 - CONSTRUCTION-COLLECTORS.
19 - SUPPLEMENTARY ENERGY-GAS.
20 - SUPPLEMENTARY ENERGY-ELECTRICAL
21 - APPENDIX C - PREDICTION OF PERFORMANCE UNDER OTHER CONDITIONS
21 - EXAMPLE
21 - SYSTEM SPECIFICATIONS
21 - SYSTEM TEST RESULTS
21 - DERIVED RESULTS
21 - CORRELATION COEFFICIENTS
21 - USE OF THE CORRELATION.
22 - SOLAR CONTRIBUTION RELATIVE TO A CONVENTIONAL ELECTRIC WATER HEATER
23 - APPENDIX D - NOTATION

Sets out a method of determining the thermal performance of a solar water heating system under controlled conditions which simulate an average day and a bad weather day. Means of using the results of this test to predict thermal performance under other operating conditions are given in an appendix.

This standard sets out a method of determining the performance of a solar water heating system under controlled conditions simulating an average day and a bad weather day.The results obtained under the standard conditions described in this standard may be used for the prediction of system performance under other conditions. Appendix C provides an expression to be used for such predictions.The tests set out do not deal with durability, soundness of construction and safety aspects. The design and construction of solar water heaters with both gas and electric supplementary heating is covered in AS 2712.