ISO 9459-2:1995 PDF

Name: ISO 9459-2:1995 — Solar heating — Domestic water heating systems — Part 2: Outdoor test methods for system performance characterization and yearly performance prediction of solar-only systems
SKU: ISO 9459-2:1995
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Solar heating — Domestic water heating systems — Part 2: Outdoor test methods for system performance characterization and yearly performance prediction of solar-only systems

Название (английский):

ISO 9459-2:1995

Solar heating — Domestic water heating systems — Part 2: Outdoor test methods for system performance characterization and yearly performance prediction of solar-only systems

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 61
Дата публикации:: 17 августа 1995 г.
Издание:: ISO IS 9459 edition 1 version 1
ICS:: 27.160

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Описание (английский):

Describes test procedures for characterizing the performance of solar domestic water heating systems operated without auxiliary boosting and for predicting annual performance in any given climatic and operating conditions.Suitable for testing all types of systems including forced circulation, thermosiphon, freon-charged collektor systems.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 9459-2:1995 - "Solar heating - Domestic water heating systems - Part 2" defines outdoor test methods for characterizing the performance of solar-only domestic water heating systems and for predicting their yearly performance. This Part 2 uses a black-box approach (no assumptions about system architecture) and is suitable for many system types - e.g., forced circulation, thermosiphon, freon-charged, and integrated collector-storage systems. The standard targets systems without integral auxiliary heating and limits applicability to systems with solar storage capacity of 0.6 m3 or less. It is not generally applicable to concentrating collectors and does not determine freeze-protection energy losses.

Key topics and requirements

Scope and applicability

Outdoor performance testing for solar-only domestic hot water systems.
Applicable only for an evening draw-off pattern and storage ≤ 0.6 m3.
Excludes systems with integral auxiliary heaters and concentrating systems.

Black-box test procedure

Produces input–output characteristics that can be combined with local meteorological daily-mean data (solar irradiation, ambient temperature, cold-water temperature) for annual performance prediction.

Measurement and instrumentation

Uses field radiometry (pyranometers, pyrheliometers) and calibrated instruments per referenced standards (e.g., ISO 9060, ISO 9846, ISO 9847).

Test execution and analysis

Defines system classifications, test conditions, required measurements, data analysis and presentation of results.
Includes procedures for predicting long-term (annual) performance from outdoor test data.

Annexes and tools

Annex A: format sheets for test and annual performance prediction.
Annex B: example computer programs for long-term prediction.
Annex C: optional test for midday draw-off (informative).
Annex D: bibliography.

Practical applications and users

Solar hot water manufacturers validating product performance claims.

Independent test laboratories conducting outdoor system characterization.

HVAC and solar consultants performing system sizing and annual yield predictions.

Certification bodies and standards organizations comparing system performance internationally.

Researchers and universities studying real-world solar domestic water heating performance.

Keywords: ISO 9459-2:1995, solar heating, domestic water heating systems, outdoor test methods, performance characterization, yearly performance prediction, solar-only systems, pyranometer, irradiance, black-box testing.

Related standards

ISO 9459 (other parts): Part 1 (indoor rating), Part 3 (solar plus supplementary), Part 4 and 5 (component tests and dynamic simulation).

ISO 9060, ISO 9846, ISO 9847 (radiometer calibration and measurement guidance).

ISO 11924 (reliability and safety testing for solar domestic water heating systems).

ISO 9459-2:1995 PDF

Abstract

Похожие стандарты

Overview

Key topics and requirements

Practical applications and users

Related standards

Технические детали

ISO 9060:1990

Solar energy — Specification and classification of instruments for measuring hemispherical solar and direct s…

BS ISO 9846:2025

Solar energy. Calibration of a pyranometer using a pyrheliometer

BS ISO 9847:2023

Solar energy. Calibration of pyranometers by comparison to a reference pyranometer

BS ISO 9459-5:2007

Solar heating. Domestic water heating systems - System performance characterization by means of whole-system…