Evaluating the use of enamel coatings on conveying and extruding equipment in the food industry | |
| Author | Yu, Shaogon |
| Call Number | AIT Thesis no. AE-90-15 |
| Subject(s) | Food industry and trade Enamel and enameling |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | A series of preliminary studies were carried out. to investigate both technical and economic feasibilities of using enamel coating on conveying and extruding equipment in The food industry. This was don e by (a) measur1ng The surface roughness of enamel c:oat.ings; (b) testing the effects of enamel coating on head loss in transferring different fluid s; (c ) investigating the energy requirement on piston extrusion using enamel coated cylinder; (d) studying the corrosion resistance of enamel coating on both alkali and salt under extreme conditions; and (e) by preliminary comparison of the use of enamel coating and stainless steel in fluid conveying system in the food industry . All these investigation s were clone in comparison witl1 stainless steel. The result from this study indicate that the enamel coated surface is generally smoother than that. of stainless steel. The surface roughness of stainless steel is a bout 1.5 to 2. 7 times higher than that of enamel coated surface. The hydraulic gradient reduction rate (HGR) of enamel coatings on the basis of stainless steel is a bout 10 to 40% , which gives enamel coated pipes a very alloreactive characteristic on head loss reduction in conveying, both Newtonian and non-Newtonian fluids, compared with conventionally used stainless steel in the food industry. During extrusion the effects of both load rate and moisture content. of dough on unit weight energy consumption are highly significant. But there is no significant difference between enamel coated and stainless steel cylinders since the reaction force from the die is much higher than the friction between the cylinder surface and The food/piston. The corrosivity test indicated that the alkali and salt resistances for stainless steel are excellent and for enamel coatings are good in comparison to some previous studies. Pre.1.iminary economic analysis a ls o show promise in The application of enamel coatings in The food industry. |
| Year | 1990 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Illangantileke, Sarath G. |
| Examination Committee(s) | Gee-Clough, D. ;Athapol Noomhorm ;Salokhe, Vilas M. |
| Scholarship Donor(s) | The Royal Netherlands Government. |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1990 |