GB20665-2015

Minimum allowable values of energy efficiency and energy efficiency grades for domestic gas instantaneous water heater and gas fired heating and hot water combi-boilers

家用燃气快速热水器和燃气采暖热水炉能效限定值及能效等级

GB 20665-2015 は現行の中国強制国家規格です：Minimum allowable values of energy efficiency and energy efficiency grades for domestic gas instantaneous water heater and gas fired heating and hot water combi-boilers。業界：建設。テーマ：防火安全。施行日：2016年6月1日。

適用可否は製品範囲、認証ルート、所管当局の通知、移行規定によって異なります。コンプライアンス判断に使う前に、翻訳をご依頼いただくか公式情報源をご確認ください。

コンプライアンス概要

この概要は現在英語のみで提供しています。

適用範囲

This standard applies to domestic gas instantaneous water heaters (including condensing types) and gas fired heating and hot water combi-boilers (including condensing combi-boilers) that use gas as the sole energy source, with a thermal load not exceeding 70kW. It is not applicable to gas storage water heaters. The standard is intended for manufacturers and testing laboratories evaluating the energy efficiency of gas water heating and space heating appliances in China.

技術要求

The standard establishes the energy efficiency grades, dividing products into three tiers, where Grade 1 represents the highest efficiency. It defines the minimum allowable values of energy efficiency (mandatory limits corresponding to Grade 3) and the evaluating values of energy conservation (recommended limits corresponding to Grade 2). The grading is determined by measuring the thermal efficiency ($\eta$) at both rated thermal load and partial thermal load (50% for water heating, 30% for space heating). The standard specifies that the higher of the two efficiency values ($\eta_1$) and the lower value ($\eta_2$) must both fall within the same grade boundary to be classified at that grade. If the two values fall into different grade boundaries, the product is assigned the lower grade. Additionally, the standard references several foundational product standards, such as GB 6932 and GB 25034, requiring that appliances meet their respective safety and performance specifications before energy efficiency evaluation.

試験方法

Testing procedures vary by product type. For standard domestic gas instantaneous water heaters, tests follow GB 6932-2001 under specific ambient and inlet water temperature conditions. For condensing water heaters, methods align with CJ/T 336-2010. Combi-boilers are tested according to GB 25034-2010 for both hot water and heating states, while condensing combi-boilers follow CJ/T 395-2012. The core evaluation involves measuring thermal efficiency at rated load and specified partial loads.

よくある質問

What is the mandatory minimum energy efficiency requirement under GB 20665-2015?

The mandatory minimum allowable values of energy efficiency correspond to Grade 3 as specified in the standard's grading table. Products failing to meet this threshold are not permitted to leave the factory.

How is the energy efficiency grade determined if the efficiency values at rated and partial loads fall into different tiers?

If the higher thermal efficiency value ($\eta_1$) and the lower value ($\eta_2$) do not fall within the same grade boundary, the product is downgraded to the lower of the two applicable grades.

Does GB 20665-2015 apply to gas storage water heaters?

No, the standard explicitly states that it does not apply to gas storage water heaters. It is limited to instantaneous water heaters and combi-boilers with a thermal load of 70kW or less.

The summary above provides a high-level overview of GB 20665-2015. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 20665-2015 today to access all detailed parameters, efficiency tables, and testing procedures.

適用のヒント

種別: 管理
CCS: F01
ICS: 27.010
所管部門: Standardization Administration of China
技術委員会: National Technical Committee on Energy Fundamentals and Management of Standardization Administration of China