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temperature , the microbial load would increase rapidly . “ Cooling milk rapidly to below 6 ° C is necessary to avoid multiplication of micro-organisms , especially psychrotrophs , which can grow at refrigeration temperatures , although their optimum (> 15 ° C ) and maximum growth ( 20 ° C ) temperatures are much higher ,” states research by the organisation . Thus , immediate cooling after milking , and storage at refrigeration temperature , are both crucial to reduce bacterial growth .
" Whether the end product is ice cream , processed milk , cream , or yoghurt , precise temperature management is vital ."
Dairy farms rely on highly efficient cooling of the milk to keep it at a consistent temperature of around 4 ° C , in either open or closed milk tanks , until it is collected for further processing . The milk tank is typically equipped with a mixer to accelerate the cooling process and homogenise the milk .
In addition , the dairy sector depends on technology that can control temperatures and ensure uncompromising hygiene in every single step of the conversion of fresh milk into finished products . Whether the end product is ice cream , processed milk , cream , or yoghurt , precise temperature management is vital .
ASSISTING THE AFRICAN DAIRY VALUE CHAIN Whatever the technology solutions used by manufacturers of milk tanks , ranging from direct expansion type , instant cooling to a two-stage cooling process , Danfoss offers an optimal selection of scrolls or reciprocating compressors , standard condensing units or packaged condensing units for 800 to 10 000 litre milk cooling tanks with either reduced application , operating or servicing costs .
Food safety and system reliability go hand-in-hand . If your cooling solution is performing as it should , and with the proper product management being in place , there should be no safety or longevity issues when it comes to milk storage .
Danfoss Climate Solutions in South Africa has a focus on enabling energy-efficient refrigeration systems for the Sub- Saharan African dairy and agricultural sectors , helping to alleviate the pressure that local dairy manufacturers are under to make their systems more efficient , while maintaining and enhancing cooling performance . RACA
Three lawyers and three engineers were travelling by train to a conference . At the station , each lawyer bought a ticket whereas the engineers bought only one ticket between them .
“ How are you going to travel on a single ticket ?” asked a lawyer . “ Wait and watch ,” answered one of the engineers . When they boarded the train , the lawyers took their seats , but the three engineers crammed into a toilet and closed the door behind them . Shortly after the train started , the ticket collector arrived . He knocked on the toilet door and asked “ Ticket , please .”
The door opened just a crack and a single arm emerged with a ticket in hand . The ticket collector took it and moved on .
Seeing this , the lawyers decided to the same thing on the return trip so when they arrived at the station they bought only one ticket . To their astonishment , the engineers didn ’ t buy any .
HUMOUR
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“ How are you going to now travel without any ticket ?” asked one of the perplexed lawyers . “ Wait and watch ,” answered one of the engineers . In the train , the three engineers crammed into a toilet and the three lawyers into another nearby . Soon after the train started , one of the engineers got out of the toilet and walked to the toilet where the lawyers were hiding .
He knocked on the door and said , “ Ticket , please …” RACA
www . hvacronline . co . za RACA Journal I November 2021 7