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摘要 ：建立了地表水地源热泵水温数学模型，采用试算法求初始水温，利用经典Runge-Kutta数值法模拟计算了地表水地源热泵水温。结合工程实例，对水温模拟结果进行了分析。 关键词 ：地表水地源热泵 水温 模型 数值法 Water temperature model and simulation of surface water source heat pumps By Zhao Jian★, Liu Jinxiang and Ding Gao Abstract Establishes a water temperature mathematical model for surface water source heat pumps (SWHP). Solves initial water temperature by trial method, and uses the Runge-Kutta numerical method to simulate water temperature. With an actual project, analyses simulated water temperature. Keywords surface water source heat pump (SWHP), water temperature, model, numerical method ★ Nanjing University of Technology, Nanjing, China