A thermal process is being used to reduce the microbial population on product contact surfaces of the packages needed for aseptic packaging of the liquid product. The spoilage microorganism has a D121 5 10 min and a z 5 88C. The microbial population on the surface is 100 per cm2 and the product contact surface area is 8 cm2 for each package. A 9D process has been recommended. a. Determine the process time for the containers at 1408C. b. Estimate the number of containers with spoilage based on survivors on the package surface when 10 million packages have been filled.

To design a steam turbine to produce 12,000 hp power. a engineer comsiders using a steady state stean low st 1160fr and engineer considers using a steady state steam flow at 1160°r and 450 psia to drive this steam turbine. the exhaust of the steam is cooled by the lake (vacuum). heat losing to the surroundings is measured at a rate of 555.55 btu/s. (a) sketch the system with the given conditions. (b) neglecting kinetic and potential energy changes from inlet to exit, determine the volumetric flow rate of the steam at the inlet, (ft'/hr). must clearly show unit conversions at crtical terms.