该文针对高校宿舍热水系统,为提高其经济效益与减排效果提出加入夜间蓄热水箱和热泵机组缓冲水箱的两种多水箱太阳能-空气源热泵热水系统,分别设计优化运行策略。选取水箱体积、集热器面积、倾角以及热泵功率等参数为优化变量,并确定生命周期成本年值与全年运行碳排放量为目标函数,通过对单水箱、双水箱和三水箱热水系统在逐月电耗、电费、太阳能保证率以及平均系统COP等方面的研究与分析,发现三水箱热水系统比传统单水箱全年能节省电耗约3.86%,省电费22.35%,太阳能保证率提高33.32%,平均系统COP提高45.70%,生命周期成本年值降低5.07%,碳排放量减少3.72%,效率提升4.65%。
Abstract
This paper proposes two types of multi-tank solar assisted air source heat pump hot water systems that add the heat storage tank at night and the buffer tank of the heat pump unit, and designs optimal operation strategies in each case, with the goal of improving the hot water system of university dorms’economic benefit and emission reduction effect. The parameters such as water tank volume, collector area, tilt angle, and heat pump power are chosen as optimization variables, and the annual value of life cycle cost and the annual carbon emissions of operation are computed as the objective function. By research and analysis of the monthly power consumption, electricity cost, hot energy guarantee rate, and average power COP of the single water tank, double water tank, and three water tank solar water system, it is discovered that the three water tank solar water system can lpower consumption by about 3.86%, save electricity cost by 22.35%, increase solar energy guarantee rate by 33.32%, increase average system COP by 45.70%, reduce life cycle cost by 5.07%, reduce carbon emissions by 3.72%, and increase exergy efficiency by 4.65%.
关键词
太阳能 /
空气源热泵 /
生命周期 /
多水箱 /
设计优化
Key words
solar energy /
air source heat pumps /
life cycle /
multiple water tanks /
design optimization
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基金
江苏省高等学校基础科学（自然科学）研究项目（22KJB610018）
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