As the development of the society and technology, the environment pollution is paid more attention from people which includes the air polluion, water pollution and so on, excpet that heat pollution should be paid more attention. Heat pollution comes from the waste heat from industry and daily life which has enormous damage to the environment, especially the water environment.

    The main reason that caused the heat pollution is that the energy can't be used efficiently. As the development of the society and the increment of the population, heat pollution will be more serious. So we should pay attention to the energy usage efficiently, decrement of the waste heat and control the heat pollution.

     随着社会的进步，科技的发展，人们对环境污染也越来越重视，但是除了常见的大气污染、水污染，还有容易被人忽视的热污染。热污染主要来源与生产和生活中排放的废热造成的，其危害非常巨大，尤其是对水生生物及其生存环境的影响尤为显著。造成热污染最根本的原因是能源未能被最有效、最合理地利用。随着现代工业的发展和人口的不断增长，环境热污染将日趋严重。因此，我们应该提高能源的利用效率，减少废热的排放，有效控制环境热污染。

   《换热器原理与设计》是能源与动力工程学院对应专业的一门专业选修课程。在传热学的基础上来重点介绍换热器的基本原理和计算步骤。本课程以间壁式、混合式、蓄热式热交换器为主要对象，系统阐述其工作原理、传热计算、结构计算、流动阻力计算和设计程序。通过本课程的讲授，使学生能系统地掌握应用较为广泛的各种热交换器原理、特性和设计计算方法，并对试验研究方法、强化传热途径、优化设计和性能评价有一定了解。旨在培养本学生具备能源与动力行业中常见热交换设备的一种设计能力。