Calculating Moisture Contents.pptx tutorial

Moisture content calculation

1. Dehydration Technology Calculating Moisture content

2. Moisture content Moisture content  is the amount of  moisture  in the sample given as a percentage of the sample's original weight . There are Two methods used to express the moisture content of materials: wet basis and dry basis moisture content. When performing these calculations, it is assumed that the sample loses only water and that the weight of the dry matter remains Wet basis Moisture content  is the amount of  moisture  in the sample given as a percentage of the sample's original weight. Dry   basis moisture content  is the amount of solids which are left after drying given as a percentage of the sample's original (wet) weight.

3. Moisture Content Wet Basis Wet basis moisture content (designated ) is described by the percentage equivalent of the ratio of the weight of water ( ) to the total weight of the material ( ). Note that wet basis moisture content can range from 0 to 100 percent . Wet basis moisture is used to describe the water content of agricultural materials and food products. When the term "moisture content" is used in the food industry it almost always refers to wet basis moisture content. One important example occurs in the grain industry where moisture content of whole grains is determined at each point in the marketing channel where the grain changes ownership.  

4. Moisture Content Wet Basis Wet basis moisture content (designated ) is described by the percentage equivalent of the ratio of the weight of water ( ) to the total weight of the material ( ); weight of the solid ( ) Note that wet basis moisture content can range from 0 to 100 percent. Wet basis moisture is used to describe the water content of agricultural materials and food products. When the term "moisture content" is used in the food industry it almost always refers to wet basis moisture content. One important example occurs in the grain industry where moisture content of whole grains is determined at each point in the marketing channel where the grain changes ownership.  

5. Moisture Content Dry Basis Dry basis moisture content (designated in the text) is described by the percentage equivalent of the ratio of the weight of water ( ) to the weight of the dry matter ( ). Note that dry weight moisture content can range from 0 to very large percentages. Dry basis moisture is most commonly used for describing moisture changes during drying. When a sample loses or gains moisture, the change in the dry basis moisture is linearly related to the weight loss or gain  

6. Relationship Between Wet Basis and Dry Basis Moisture Content If , the wet basis moisture content in percent, is known, the dry basis moisture content can be calculated using : x 100 If , the dry basis moisture content in percent, is known, the wet basis moisture content can be calculated using: x 100 x 100