Thermodynamics
工程热力学是研究热能与机械能相互转换规律的一门学科,是机械工程尤其是能源动力方向的重要基础课。内容包括热力学基本概念、热力学第一定律与第二定律、理想气体与实际气体的性质、热力过程与热力循环、熵分析与火用分析、动力循环(朗肯、布雷顿)与制冷循环等。学生将掌握能量转换与利用的分析方法。
Engineering Thermodynamics studies the conversion between thermal and mechanical energy, a key foundation for mechanical and energy engineering. Topics include basic concepts, the first and second laws, ideal and real gas properties, thermodynamic processes and cycles, entropy and exergy analysis, and power cycles (Rankine, Brayton) and refrigeration cycles. Students master energy conversion analysis methods.
学生需对一给定参数的蒸汽动力朗肯循环(含再热与回热)进行热力计算,确定各状态点参数、循环热效率、汽耗率,并对锅炉、汽轮机、冷凝器、给水泵等主要设备进行火用损失分析与火用效率计算。要求绘制循环T-s图,提交完整计算报告并讨论提升循环效率的途径。
Students perform thermodynamic calculations for a steam Rankine cycle (with reheat and regeneration), determining state-point properties, thermal efficiency, and steam rate. Conduct exergy destruction and exergy efficiency analysis for the boiler, turbine, condenser, and pump. Plot the T-s diagram and submit a report discussing methods to improve cycle efficiency.