燃气采暖热水炉发热评价方法试验研究  

Experimental Study on Heating Evaluation Method for Gas-Fired Heating and Hot Water Combi-Boiler

作　　者：陈聪 黄波 冼家胜 

机构地区：[1]广东万和新电气股份有限公司,佛山528305

出　　处：《日用电器》2024年第11期171-177,共7页ELECTRICAL APPLIANCES

摘　　要：现行燃气采暖热水炉技术标准规定的表面温升限值,可能导致在正常使用条件下,表面温度明显超过可接受的安全水平。同时,按照技术标准规定的方法,对燃气采暖热水炉特定的部位表面进行发热试验,结果显示在不同环境温度下,温升测量值呈现较大幅度的变化。传热学分析表明,在较大环境温度变化的运行条件下,以温升限值作为发热试验评价的合格判定依据不具备合理性。同时,对于内部的发热影响评价,以整机运行外部环境作为温升测量的基准条件是不合理的。建议采用在预期运行环境温度上限条件下的温度限值,作为燃气采暖热水炉发热试验评价的合格判定依据;而且,温度限值应在预期的运行环境下,相关部位的温度满足安全性、可靠性的要求。鉴于燃气快速热水器与燃气采暖热水炉在结构和功能方面的相似性,本文也对燃气热水器的发热试验方法进行了分析。The surface temperature rise limit stipulated in the current technical standard of gas-fired heating and hot water combi-boiler may lead tothe surface temperature significantly exceeding the acceptable safety level under normal use conditions.At the same time,according to the method stipulated in the technical standard,the heating test is car-ried out on the surface of the specific part of the gas-fired heating and hot water combi-boiler.The results showthat the temperature rise measurement value changes greatly at different ambient temperatures.The heat transfer analysis shows that it is not reasonable touse the temperature rise limit as the qualified judgment basis for the evaluation of heating test under the operating conditions of large ambient temperature changes.At the same time,for the internal heating impact assessment,it is unreasonable to take the external environment of the whole machine as the benchmark condition for temperature rise measurement.It is suggested that the temperature limit under the upper limit of the expected operating environment temperature should be used as the qualified judgment basis for the evaluation of the heating test of the gas-fired heating and hot water combi-boiler.Moreover,the temperature limit should be in the expected operating environ-ment,the relevant parts of the temperature to meet the safety and reliability requirements.In view of the similarity in structure and function between gas-fired heating and hot water combi-boiler and gas instanteous water heater,this paper alsoanalyzes the heating test method of gas instanteous water heater.

关 键 词：燃气采暖热水炉 燃气快速热水器 温度 温升 发热 安全 检测 标准 

分 类 号：TU832[建筑科学—供热、供燃气、通风及空调工程]