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Zmags
<br /> Efficient Cooling<br /> Efficient Cooling has been written to provide a basic understanding of the<br /> complex subject of milk cooling. It is from the physiological, biological and<br /> behavioural platforms presented here that DeLaval products are developed.<br /> Our philosophy is to work in harmony with biology, the environment, and<br /> the natural processes of life, towards optimal harvesting and cooled storage<br /> of nature's most perfect food, milk.<br /> <br /> <br /> We would especially like to thank the following for all their help<br /> (in alphabetical order):<br /> <br /> Mr S. Y. Jansen<br /> <br /> <br /> <br /> Mr A. P. M. Rombouts<br /> <br /> <br /> <br /> Mr P. Schriemer<br /> <br /> <br /> <br /> Mr G. Wever<br /> <br /> <br /> <br /> <br /> DeLav
Efficient Cooling
Efficient Cooling
Efficient Cooling has been written to provide a b
Efficient Cooling has been written to provide a b
List of contentsI Introduction........
List of contentsI Introduction........
I. IntroductionMilk is one of the most import
I. IntroductionMilk is one of the most import
II. MilkWhere does milkcome from?
II. MilkWhere does milkcome from?
Milk production is not always the main reason for
Milk production is not always the main reason for
Figure II.4Composition of raw milk
Figure II.4Composition of raw milk
These compounds are then conveyed to the cells of
These compounds are then conveyed to the cells of
VitaminsVitamins are organic substances which oc
VitaminsVitamins are organic substances which oc
III. Why cool milk?In early times, people kep
III. Why cool milk?In early times, people kep
Milk hygiene andqualityFigure
Milk hygiene andqualityFigure
Chemical hygieneThe different components of milk
Chemical hygieneThe different components of milk
Figure III.2Micro-organisms playa very importan
Figure III.2Micro-organisms playa very importan
BacteriaBacteria are single-celled organisms tha
BacteriaBacteria are single-celled organisms tha
Figure III.7Schematic view of a bacte-rial cell
Figure III.7Schematic view of a bacte-rial cell
Bacterial spore and capsule formationThe spore i
Bacterial spore and capsule formationThe spore i
Figure III.12Temperature conditionsand classifi
Figure III.12Temperature conditionsand classifi
PSYCHROPHILIC are the cold-loving bacteria. They
PSYCHROPHILIC are the cold-loving bacteria. They
Oxygen demandWhile all higher level organisms re
Oxygen demandWhile all higher level organisms re
Milk is rich in nutrients and is as such an excel
Milk is rich in nutrients and is as such an excel
Figure III.16Growth curve ofbacteria (adapted f
Figure III.16Growth curve ofbacteria (adapted f
Infection on the farmIn the course of handling o
Infection on the farmIn the course of handling o
Figure III.20Bacteria development bydifferent s
Figure III.20Bacteria development bydifferent s
If you wish to find out more about the positive a
If you wish to find out more about the positive a
Figure III.24Structure of the yeast cell/adapte
Figure III.24Structure of the yeast cell/adapte
Yeasts are usually undesirable in dairy products
Yeasts are usually undesirable in dairy products
Figure III.29Growth of starterbacteria and phag
Figure III.29Growth of starterbacteria and phag
1 The phage attaches to the surface of its host
1 The phage attaches to the surface of its host
IV. Milk collectionHow to transportraw milk
IV. Milk collectionHow to transportraw milk
It is advisable to use insulated, or even refrige
It is advisable to use insulated, or even refrige
Milk collectionpoints and centresFigure I
Milk collectionpoints and centresFigure I
Logistic advantagesTransporting cooled milk from
Logistic advantagesTransporting cooled milk from
V. Cooling technologyHeat – an energydiffere
V. Cooling technologyHeat – an energydiffere
Cooling with basic facilitiesIf the milk must be
Cooling with basic facilitiesIf the milk must be
Figure V.3Cooling with water and ice– simple an
Figure V.3Cooling with water and ice– simple an
Modern cooling systemsCooling systems transfer t
Modern cooling systemsCooling systems transfer t
Figure V.5The individual parts of acooling inst
Figure V.5The individual parts of acooling inst
Key to figure V.51. Compressor2. Pressostat
Key to figure V.51. Compressor2. Pressostat
Figure V.7Direct expansioncooling system – the
Figure V.7Direct expansioncooling system – the
The biggest advantage of an icebank system is tha
The biggest advantage of an icebank system is tha
Figure V.10Milk/water flow in a pre-cooler heat
Figure V.10Milk/water flow in a pre-cooler heat
milk pumpheat exchangerice builderi
milk pumpheat exchangerice builderi
EcombiesEcombies involve a two-step cooling proc
EcombiesEcombies involve a two-step cooling proc
VI. Demands on cooling equipmentCooling equipm
VI. Demands on cooling equipmentCooling equipm
Figure VI.3Milk cooling timeMilk cooling time (
Figure VI.3Milk cooling timeMilk cooling time (
MaterialDifferent materials can be used to cons
MaterialDifferent materials can be used to cons
Cleaning CleaningCl
Cleaning CleaningCl
R for RefrigerantsR12The first widely used art
R for RefrigerantsR12The first widely used art
AGITATORSNo hazardous part of the agitator shall
AGITATORSNo hazardous part of the agitator shall
VII. DeLaval cooling systemsDeLaval offers t
VII. DeLaval cooling systemsDeLaval offers t
DeLaval IBFigure VII.4DeLaval IBDeLaval IB
DeLaval IBFigure VII.4DeLaval IBDeLaval IB
VIII. Future aspectsOne of the most labour in
VIII. Future aspectsOne of the most labour in
Cooling media andthe environmentCooling media
Cooling media andthe environmentCooling media
IX. The environmentDeLaval and the environment
IX. The environmentDeLaval and the environment
Planning and follow-up• Environmental endeavours
Planning and follow-up• Environmental endeavours
X. LiteratureAlfa Laval Agri AB. (1995). Effi
X. LiteratureAlfa Laval Agri AB. (1995). Effi
www.delaval.com
www.delaval.com