1. The problem statement, all variables and given/known data In recent years, there have been several significant outbreaks and recalls associated with Salmonella in peanut butter. One company has designed a thermal pasteurization system to reduce pathogen risk in peanut butter, in which the peanut butter is pumped through a heating tube and heated to 85degC (from an initial temperature of 15.6degC). You have been given values for peanut butter density (1,090 kg/m3) and specific heat (1.2 kJ/kgK). If the pasteurizer can deliver 47 kW of heating power, (a) What is the theoretical operating capacity of the pasteurizer (lb/h) of peanut butter? (b) What size storage tank (ft3) is needed to store one shift (8 h) worth of peanut butter for this facility? 2. Relevant equations V=m/ρ V=v.ΔT Q=m.C.ΔT W=J/s 3. The attempt at a solution Ok, I'm lost. I don't understand the first question and I don't know where to start. I would appreciate any help.