China is the largest solar water heater producer and market in the world.Despite the fast growth and an installed capacity that accounts for the majority of the global gross,China's per capita solar hot water capa...China is the largest solar water heater producer and market in the world.Despite the fast growth and an installed capacity that accounts for the majority of the global gross,China's per capita solar hot water capacity is still very low,implying a huge margin of market potential;and the recognition of the industry in the global market is handicapped by the scattered scale of production and inconsistent product quality.To ensure continued growth of China's solar water heating(SWH) industry,Chinese Government has established a series of national SWH standards,three national testing centers,and a certification program to lay the foundation for the development of the Golden Sun product labeling system.China General Certification Center(CGC) developed the Golden Sun product certification and labeling system on a pass/fail basis evaluating with established criteria.The system was designed to help manufacturers acclimate to explicit consistent requirements and to identify and fix the deficiencies in the design and execution of the program itself.Timely revision and integration of the national standards are recommended to accommodate the test procedures and requirements to new technologies and the evolving SWH market.Strict implementation of the Golden Sun certification and labeling system are suggested to avail improving the quality control and forging internationally reputable brands of Chinese solar water heating products.展开更多
对青海省共和县中深层地源热泵集中供暖系统实际运行情况展开了研究。通过室内外温度、取水与回灌水温度、供回水温度、能耗和性能系数等数据,综合分析了供热系统实际运行表现。研究结果表明,地热水出水温度存在0.078℃/d的衰减率,为维...对青海省共和县中深层地源热泵集中供暖系统实际运行情况展开了研究。通过室内外温度、取水与回灌水温度、供回水温度、能耗和性能系数等数据,综合分析了供热系统实际运行表现。研究结果表明,地热水出水温度存在0.078℃/d的衰减率,为维持地热动态平衡,取水上限流量为80 m 3/h。此外,天气转暖过程中室外平均温度5℃可看作热泵机组启停节点,关闭地源热泵机组仅靠板式换热器换热,能使系统综合性能系数最大升至8.7,系统能耗降幅达42.9%。本文可为地热供暖系统优化运行及能效提升提供参考。展开更多
针对中国建筑暖通空调系统能耗大、传统供暖方式碳排放高的问题,设计了一种适合在北方严寒地区运行的太阳能-空气双源热泵系统并建立了数学模型。采用SHADE(Success-History Based Adaptive Differential Evolution,基于历史成功的自适...针对中国建筑暖通空调系统能耗大、传统供暖方式碳排放高的问题,设计了一种适合在北方严寒地区运行的太阳能-空气双源热泵系统并建立了数学模型。采用SHADE(Success-History Based Adaptive Differential Evolution,基于历史成功的自适应参数差分进化)算法且充分考虑气候不确定性后对系统经济性、碳排放进行了分析,结果显示其可以完全满足所取建筑的供暖需求,在经济性与集中供暖、传统空气源热泵供暖相当的同时具有优良的碳减排性能,CO_(2)排放较集中供热降低23.79%,较传统空气源热泵降低7.35%。展开更多
文摘China is the largest solar water heater producer and market in the world.Despite the fast growth and an installed capacity that accounts for the majority of the global gross,China's per capita solar hot water capacity is still very low,implying a huge margin of market potential;and the recognition of the industry in the global market is handicapped by the scattered scale of production and inconsistent product quality.To ensure continued growth of China's solar water heating(SWH) industry,Chinese Government has established a series of national SWH standards,three national testing centers,and a certification program to lay the foundation for the development of the Golden Sun product labeling system.China General Certification Center(CGC) developed the Golden Sun product certification and labeling system on a pass/fail basis evaluating with established criteria.The system was designed to help manufacturers acclimate to explicit consistent requirements and to identify and fix the deficiencies in the design and execution of the program itself.Timely revision and integration of the national standards are recommended to accommodate the test procedures and requirements to new technologies and the evolving SWH market.Strict implementation of the Golden Sun certification and labeling system are suggested to avail improving the quality control and forging internationally reputable brands of Chinese solar water heating products.
文摘对青海省共和县中深层地源热泵集中供暖系统实际运行情况展开了研究。通过室内外温度、取水与回灌水温度、供回水温度、能耗和性能系数等数据,综合分析了供热系统实际运行表现。研究结果表明,地热水出水温度存在0.078℃/d的衰减率,为维持地热动态平衡,取水上限流量为80 m 3/h。此外,天气转暖过程中室外平均温度5℃可看作热泵机组启停节点,关闭地源热泵机组仅靠板式换热器换热,能使系统综合性能系数最大升至8.7,系统能耗降幅达42.9%。本文可为地热供暖系统优化运行及能效提升提供参考。
文摘针对中国建筑暖通空调系统能耗大、传统供暖方式碳排放高的问题,设计了一种适合在北方严寒地区运行的太阳能-空气双源热泵系统并建立了数学模型。采用SHADE(Success-History Based Adaptive Differential Evolution,基于历史成功的自适应参数差分进化)算法且充分考虑气候不确定性后对系统经济性、碳排放进行了分析,结果显示其可以完全满足所取建筑的供暖需求,在经济性与集中供暖、传统空气源热泵供暖相当的同时具有优良的碳减排性能,CO_(2)排放较集中供热降低23.79%,较传统空气源热泵降低7.35%。
