Stocker Solutions were called in January to undertake a Milk Cooling Consultation at one of our clients farms. Their milk temperatures were not meeting Fonterra’s compliance standards (the silo temperature was unable to reach below 6deg at 2 hours after the end of milking, also the silo temperature was becoming warmer than 10deg during the next milking). The customer wanted us to assess their options as they had already been quoted a large expensive new chilling system from their refrigeration provider, but wanted to save a large capital outlay this late in the milking season.
We arranged a visit to our clients farm and installed our data logger to measure their milking data over 4 days. Current milk and water flow readings were taken and current spec. of their setup was assessed. The data was then analysed and to find that their ground water temperatures were very good (at approximately 13.5deg), but primary cooling was not working efficiently (the average temperature of the milk was entering the silo at 20.1 degrees). Typically to have an “efficient cooler” the difference between the water supply and the milk leaving the cooler should be 2-3deg.
After looking at the data we recommended a few different options. Our largest GEA aquaCHILL unit was quoted as a suitable option, an alternative option was our ultra efficient plate cooler. The advantage of the aquaCHILL unit in this case is the was that once installed and commissioned, milk would have been immediately entering to silo as low as 5 deg. However, in this case there was a large capital outlay and an additional requirement for an upgrade to the current switchboard to handle the additional power load. The plate cooler option had no additional running costs or water consumption above their existing system.
Our client decided immediately to select the plate cooler system upgrade which made their system compliant straight away (for the rest of the season). This avoided a large capital outlay before the end of the season. By upgrading the plate cooler system now, with its improved performance, they have downgraded their chilling needs from the largest aquaCHILL unit to the smallest of our four units, and the installation can be deferred to nearer the peak of the next season. The requirement for the smaller unit now means they will not have to upgrade the switchboard previously required for the largest unit.
By carrying out this upgrade, we have made this customer immediately compliant, saved total cost of installation and lowered ongoing operating costs.
After the new system was installed, the data logger was on site for another 4 days to assess temperatures. These result continue to amaze the team here at Stocker’s where the temperature differences between water and milk are less than 1 degree (compared with the industry standard of 2-3 degrees). Water supplied to the cooler was measured at a median of 13.7 degrees, with the median milk temperature leaving the ultra efficient cooler at 14.4 degrees, a difference of 0.7 degrees.
In conclusion, we’ve made our client compliant with current regulations, with a lower cost outlay, and also future proofed their system for the future, all while keeping operating costs low. Definitely a Result for Success.