Heat exchanger and modular heat exchange system

The heat exchanger comprises a heat dissipation core, an inlet connecting pipe and an outlet connecting pipe, an outlet channel is formed in the outer wall of the heat dissipation core in the circumferential direction of the heat dissipation core, the inlet connecting pipe penetrates through the outlet channel and extends into the heat dissipation core, the inlet connecting pipe is used for introducing hot fluid, and the outlet connecting pipe communicates with the outlet channel; the multi-channel heat exchanger has the advantages that the heat exchange capacity is high, the compact degree is high, the flowing heat transfer direction of a working medium is adjustable, the multi-channel heat exchanger can adapt to various use environments, and the multi-channel heat exchanger is flexible to use. 本申请公开了一种换热器及模块式换热系统，包括散热芯、进口接管和出口接管，散热芯外壁沿散热芯周向开设有出口通道，进口接管贯穿出口通道并伸入散热芯内部，进口接管用于通入热流体，出口接管与出口通道连通，且出口接管沿出口通道周向位置可调，出口接管用于排出热交换后的流体，本申请具有换热能力强、紧凑程度高、工质流动传热方向可调、可适应各种使用环境、使用灵活的优点。