Heat Distribution Studies of the retort of sterilizer are conducted by using distributed temperature measuring sensors or wireless datalogger to establish the thermal processing procedures, come﹗p-time requirements, and temperature stability and uniformity, which are necessary to establish the heating and cooling performance of retort throughout the retort thermal processing.
Temperature distribution studies are important to determine the slower heating location of cold-spot, by performed using actual
production retort conditions or parameters.
Heat Penetration Studies of the retort of sterilizer are conducted by using distributed temperature measuring sensors or wireless datalogger to determine the heating & cooling characteristics of a product or package in a retort system for the establishment of a safe & optimum thermal process to deliver a sterile product.
Heat penetration test studies will focus on this worse condition.
Ball-Formula Method:
a. Calculation of heating rate factor, the slope of the heating curve, fh
b. Calculation of value of dimensionless lag factor, jch
c. Calculation of Total process time, B = fh [log (jch·Ih) – log g],
d. Calculation of process time, Pt = B – 0.42 CUT
e. Calculation of Ball process Lethality, Fo = fh/[(fh/U) x Fi]
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