本文通过壳程和管程两方面进行强化传热，来研究与开发新型高效换热器。

Through reinforcing heat transfer by changing monitor and shell, research and development of new high-activity heat exchanger were made.

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70年代中，根据国外介绍，开始了新型高效换热器的设计，提高了传热系数。

Then in the mid-1970s, new types of exchangers with higher transfer coefficients began to be developed on the basis of foreign experience.

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微通道换热器作为新型高效换热器，已广泛应用于汽车空调换热器，并且正在家用空调中推广使用。

As a high-efficiency heat exchanger, microchannel heat exchanger has been widely used in automobile air-conditioning and is promoted using in residential air-conditioning.

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