To prevent thermal fatigue, the standard generally recommends limiting stream temperature differences to 50 raised to the composed with power C for single-phase streams and 30 raised to the composed with power C for two-phase streams. Material Constraints:
, which provide additional specialized guidance on Brazed Aluminum Heat Exchanger (BAHX) performance. Chart Industries Accessing the PDF api 668 pdf
Standard corrosion allowance is zero for aluminum and stainless steel components unless otherwise specified. Maintenance & Integrity: Maintenance & Integrity: , here are the critical
, here are the critical operational and design limits established by API 668: Temperature Gradients: Designs must accommodate stream fluctuations of plus or minus 1 raised to the composed with power C per minute and transient changes of up to 60 raised to the composed with power C Maximum Temperature Differences: Maintenance & Integrity:
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