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BS EN ISO 24194:2022

BS EN ISO 24194:2022

$167.15

Solar energy. Collector fields. Check of performance

Published By Publication Date Number of Pages
BSI 2022 38
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This document specifies two procedures to check the performance of solar thermal collector fields. This document is applicable to glazed flat plate collectors, evacuated tube collectors and/or tracking, concentrating collectors used as collectors in fields. The check can be done on the thermal power output of the collector field and also be on the daily yield of the collector field. The document specifies for the two procedures how to compare a measured output with a calculated one. The document applies for all sizes of collector fields.

PDF Catalog

PDF Pages PDF Title
2 National foreword
4 European foreword
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
13 5 Procedure for checking the power performance of solar thermal collector fields
5.1 Stating an estimate for the thermal power output of a collector field
5.2 Calculating power output
5.2.1 General
14 5.2.2 Non-concentrating collectors — Formula (1)
15 5.2.3 Non- or low-focussing collectors — Formula (2)
5.2.4 Focussing collectors with high concentration ratio — Formula (3)
5.3 Stating a performance estimate
5.4 Restrictions on operating conditions
16 5.5 Shadows
5.5.1 Shadows on fixed collectors in rows
17 5.5.2 Shadows on one-axis tracking collectors in row
19 5.6 Collector incidence angle
5.7 Example of setting up an equation for calculating performance estimate
20 5.8 Determination of potential valid periods
5.9 Checking collector field power performance
22 6 Procedure for checking the daily yield of solar thermal collector fields
6.1 Stating an estimate for the daily yield of a collector field
6.2 Calculating daily energy yield
6.2.1 General
6.2.2 Non-tracking and non-concentrating collectors — Formula (20)
23 6.3 Stating a performance estimate
6.4 Restrictions on operating conditions
6.5 Shadows
24 6.6 Collector incidence angle
6.7 Example of setting up an equation for calculating performance estimate
25 6.8 Determination of potential valid periods
6.9 Checking collector field daily yield performance
7 Measurements needed
7.1 General
27 7.2 Requirements on measurements and sensors
7.2.1 Accuracy
28 7.2.2 Time
7.2.3 Solar radiation measurement
30 7.2.4 Temperature measurements
7.2.5 Flow rate measurement
31 7.2.6 Power measurement/calculation
7.2.7 Measurement of wind speed
7.3 Valid data records
32 Annex A (informative) Recommended reporting format — Power method
35 Annex B (informative) Recommended reporting format — Daily yield method
36 Bibliography

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BS EN ISO 24194:2022
$167.15