GB/T 18708-2002 in English

《GB/T 18708-2002家用太阳热水系统热性能试验方法》由TC402（全国太阳能标准化技术委员会）归口，主管部门为国家标准化管理委员会。
本标准规定了家用太阳热水系统在没有辅助加热时的热性能测试步骤。本标准适用于贮热水箱容积在0.6m3以下，仅用太阳能的家用热水系统。本标准不适用于同时进行辅助加热的太阳热水系统的试验。

This Standard establishes test procedures for characterizing the performance of Domestic Solar water heating systems operated without auxiliary boosting.
This Standard is applicable only to the domestic water heating systems of 0.6 m3 of solar storage capacity or less.
This Standard is not applicable to the test of solar water heating systems which have an auxiliary heater.

Foreword II
1 Scope
2 Normative References
3 Definitions
4 Symbols
5 System Classifications
6 Requirements
6.1 System requirements
6.2 Measurement requirements
7 Test Procedure
7.1 Principle
7.2 Range of test conditions
7.3 Preconditioning of the test system
7.4 Surrounding air speed
7.5 Measurements during test period
7.6 Determination of daily system performance
7.7 Determination of storage tank heat losses
8 Analysis and Presentation of Results
8.1 Introduction
8.2 Input-output diagram