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How to distinguish between fouling and blockage in a heat exchanger?

Direct Conclusion

Scaling manifests as reduced heat transfer with normal flow, while clogging causes increased pressure drop and reduced flow; both often occur simultaneously.

Judgment Criteria

  1. 01

    Compare inlet/outlet pressure differential and flow: If the differential rises significantly while flow drops, check for blockages or foreign objects first.

  2. 02

    Compare the terminal temperature difference with outlet temperature: if flow is normal but the terminal temperature difference increases, scaling on the heat exchange surface is likely.

Responsibility and Timeliness

Reviewer: Enterprise Technical Team

Content updated: 2025-06

Publisher: Shandong Zhengyi International Trade Co., Ltd.

Contact: 13305317997

Content is compiled based on product technical documentation and field experience. Actual operating conditions are subject to site confirmation and contractual agreements.

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