AS 2535-1986

1 - AS 2535-1986 SOLAR COLLECTORS WITH LIQUIDS AS THE HEAT-TRANSFER FLUID - METHOD OF TESTING THERMAL PERFORMANCE
4 - PREFACE
4 - CONTENTS
5 - FOREWORD
6 - SECTION 1. SCOPE AND GENERAL
6 - 1.1 SCOPE.
6 - 1.2 APPLICATION.
6 - 1.3 REFERENCED DOCUMENTS.
6 - 1.4 DEFINITIONS.
6 - 1.4.1 Absorber
6 - 1.4.2 Collector
6 - 1.4.3 Collector aperture
6 - 1.4.4 Collector cover
6 - 1.4.5 Concentratiog collector
6 - 1.4.6 Evacuated tubular collector
6 - 1.4.7 Flat-plate collector
6 - 1.4.8 Heat pipe
6 - 1.4.9 Pyranometer
6 - 1.4.10 Residence time
6 - 1.4.11 Solar simulator
6 - 1.4.12 Steady state
6 - 1.4.13 Test point period
6 - 1.4.14 Unglazed collector
8 - SECTION 2. TEST EQUIPMENT AND INSTRUMENTATION
8 - 2.1 GENERAL DESCRIPTION.
8 - 2.2 COLLECTOR STAND.
10 - 2.3 SUPPLY TANKS.
10 - 2.3.1 Open loop systems.
10 - 2.3.2 Closed loop systems.
10 - 2.3.3 General.
10 - 2.4 INSTRUMENTATION.
10 - 2.4.1 General.
10 - 2.4.2 Temperature measuring system.
10 - 2.4.3 Pyranometers.
11 - 2.4.4 Mass flow rate in open loops.
11 - 2.4.5 Mass flow rate in closed loops.
11 - 2.4.6 Wind speed and direction.
11 - 2.4.7 Alignment device.
11 - 2.5 SOLAR SIMULATOR.
12 - SECTION 3. EXPERIMENTAL PROCEDURE
12 - 3.1 GENERAL.
12 - 3.2 PROCEDURE.
13 - 3.3 TEST RESULTS.
13 - 3.4 REPORTING OF RESULTS.
13 - 3.5 EFFECTS OF INCIDENT ANGLE.
13 - 3.6 CORRECTION FOR THE EFFECTS OF DIFFERENT HEAT-TRANSFER FLUIDS.
14 - 3.7 EFFECTS OF SLOPE.
14 - 3.8 EFFECTS OF MASS FLOW RATE.
15 - APPENDIX A - DERIVATION OF THE COLLECTOR EFFICIENCY CHARACTERISTIC
15 - A1 SCOPE.
15 - A2 CALCULATIONS.
16 - APPENDIX B - FORMAT FOR REPORTING OF RESULTS - SOLAR COLLECTOR TEST REPORT
19 - APPENDIX C - DERIVATION OF CORRECTION FACTOR
21 - APPENDIX D - CHOICE OF COLLECTOR TERMAL CONSTANTS
22 - APPENDIX E - NOTATION

Sets out a method for determining the thermal performance characteristic of all classes of solar collectors operating with liquid as the heat-transfer fluid. The thermal performance characteristic may be used to estimate collector performance when subjected to different ambient conditions and load requirements.

This standard sets out a method for determining the thermal performance characteristic of all classes of solar collectors operating with liquid as the heat-transfer fluid. This thermal performance characteristic may be used to estimate the performance of the collector when subjected to different ambient conditions and load requirements. It can also be used as a basis for rating different collectors.The test method described is intended for use on all types of collector, which transfer incident solar energy, as heat, to liquid passing through the collector.

Under Revision see DR 98545 CP (in part)