MATERIAL BALANCE By ENG SAMPATH WIJESOORIYA STEPS TO

MATERIAL BALANCE ÷Éñ ÌâºëÈ¾Æ By ENG. SAMPATH WIJESOORIYA

STEPS TO MATERIAL BALANCE ÷Éñ ÌâºëÈ¾Æ Ì¿Íå ɾ ÀèÆÉÇƾà 1. Identify the production processing steps ¾èËàÀå¼¾ ¨èòÆåÉÈèïÆà ÀèÆÉÇƾà Íß¾å ªæ¾éÄ 2. Drawing the process flow diagram (PFD) ¾èËàÀå¼¾ ªæÈéŠ Çç ̴; ¡æ¿ûÄ 3. Identify all the input & output material to the each and every processing steps of the PFD ¾èËàÀå¼¾ ªæÈéŠ Çç Ì´Íï¾à ɾ ÌèÆõÄ ¾èËàÀå¼¾ ÀèÆÉÇƾà Ì¿Íå ɾ ïƼÉêŠ Íå ¾èÄÉêŠ Íß¾åªæ¾éÄ 4. Select a system Boundary and Basis for Calculation ª¸¾Æ Ì¿Íå ÌêóÌê ÌéÄåɾà Íå ¨åÈ ÀÇÌƾà Íß¾å ªæ¾éÄ 5. Indicating the known quantitative values of each and every input and output material ÌèÆõÄ ¼¾à¾å ïƼÉêŠ Íå ¾èÄÉêŠ ÉÈ ÀòÄå¸åºàĨ ¡ªÆ¾à Ì´Í¾à ¨Ç ªæ¾éÄ 6. Appling the material balance equation for the selected system boundary ïºåàÇ媺à À¼à½ºèÆ Ì¿Íå ÷Éñ ÌâºëȾ Ìä¨Ç¸Æ ïƼûÄ 7. Solve the equation to calculate the unknown values Ìä¨Ç¸ —̼å ï¾å¼¾à¾å ¡ªÆ¾à ïÌåÆå ªæ¾éÄ

DRAWING THE PROCESS FLOW DIAGRAM (PFD) Split Coconut Germinated Coconut Empties Coconut Water Shells Rotten Nuts Coconut Water Coconut Pieces Wet Pairings Rotten Nuts Coconut Water Coconut Pieces Water Washed Water Coconut Pieces

DRAWING THE PROCESS FLOW DIAGRAM (PFD) Water with Coconut Milk Coconut Pieces DC Dust Coconut Oil Under Dried DC Charred Pieces Coarse DC Polythene with Paper Bags Treads DC

EXAMPALE ¤¼åÍǸ Calculation of material waste in the process of making a cake. ï¨à¨à Ìç¼ûû Ìèóɾ ÷Éñ ¡ÀïºàÆåÄ ª¾¸Æ ¨è×Ä Menu: Flour (Àè›) – 250 g, Sugar(Ìé¾è (”ºàºÇ )-4 (250 g) Flour ) – 250 g , Butter ( ´Ú) – 250 g , Eggs (250 g) Final product- Made cake with the weight of 950 g Sugar (250 g) Butter (250 g) Egg Trimming(30 g) Making of Cake (250 g) Made Cake ( 950 g ) scrapes ( Y = ? )

DATA SOURCES FOR MATERIAL BALANCE ÷Éñ ÌâºëÈ¾Æ Ì¿Íå ɾ ¼ºàº ÀòÃÉƾà ØPurchasing records • ȼû ªæ¾éïŠ ÉåÚºå ØStores records ª ¶å ÉåÚºå ØProduction Records ¾èËàÀå¼¾ ÉåÚºå ØGarbage Records ÷Éñ ¡ÀÍǸ ÉåÚºå ØSecurity Reports ¡åǨà˨ ÉåÚºå ØSales records —¨ë¸êŠ ÉåÚºå

THANK YOU ! ÌàºíºèÆè ! SAMPATH WIJESOORIYA ( B. Sc. Eng. ) Project Consultant The SWITCH-Asia Programme c/o CCC Solutions (Pvt) Ltd 3 rd Floor, IBM Bldg. , 48, Nawam Mawatha, Colombo 02, Research Engineer Industrial Technology Institute 303, Bauddhaloka Mawatha Colombo 07 Tel: 011 5588873 Fax: 011 5588866 Email: sampathw@cccsolutions. org Web: www. chamber. lk/switchasia