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1·Evaluation methods to heat transfer enhancement performance in shell of shell and tube heat exchanger;

通过实测的运行数据，对板翅式换热器和管式换热器的性能进行了对比。

2·Factors causing the total fee of shell and tube heat exchangers are analyzed, and a program for optimum design of shell and tube heat exchanger is worked out.

分析了影响年总费用的因素，编制了管壳式换热器优化设计计算机程序。

3·The mechanisms of heat transfer enhancement and pressure drop reduction are analyzed of a new type of rod baffle shell and tube heat exchanger with spiral groove tube bundles.

描述了新型折流杆换热器的强化传热和降低壳层压力降的原理，它与传统折流板换热器相比，传热效率高，材料及能耗小。

4·The utility model provides a reboiler with longer service life, aiming at solving the problem that the shell and tube heat exchanger in the existing reboiler often has short service life.

本实用新型提供了一种使用寿命较长的再沸器，以解决现有再沸器中列管式换热器使用寿命短的问题。

5·Shell and tube heat exchanger, screw compressor, and electronic expansion valves are detailed selectioned and designed, and a sewage-source heat pump system is designed for a building of Harbin.

对壳管式换热器、螺杆压缩机、电子膨胀阀进行详细的选型和设计计算，对哈尔滨市某办公楼设计出一套污水源热泵系统。

6·The design and research of the paper has certain reference value to shell-and-tube heat exchanger especially U-tube heat exchanger engineering design.

本文的设计与研究对于管壳式换热器尤其是U形管式换热器的工程设计具有一定的参考价值。

7·Tubesheet is the most important and complicated part of tube-and-shell heat exchanger.

而管板是管壳式换热器中最重要也是最复杂的承压部件。

8·In the design and operation of shell-tube heat exchanger, it must pay attention to the vibration inducing by fluid.

在管壳式换热器设计与运转中，必须重视流体诱导振动的问题。

9·Analyze reason causing vibration of the shell-and-tube heat exchanger; discuss preventing vibration measures with example by using HTRI soft ware.

分析管壳式换热器产生振动的原因，通过实例，利用HTRI软件讨论管壳式换热器防止振动的措施。

10·Based on the heat calculation, the heat exchanging effects of graphite block heat exchanger and shell and tube exchanger were compared.

通过传热计算，对圆块式与列管式石墨换热器的换热效果进行了对比。