Optimization and Interpretation of Heat Distribution in Sterilization Room Using Convection Pipe

Abstract

In mushroom cultivation of white oyster mushroom (P. ostreatus), problems in the contamination during the production are typically found. This contamination is due to the issue in controlling temperature during the media sterilization for growing the fungus (bag-log). This suboptimal sterilization causes unwanted bacteria and spores to grow. To reduce the amount of contamination, the purpose of this study was to demonstrate and evaluate the temperature distribution using one convection pipe with diameter of 6 and 8 cm. The fuel used for this sterilization process is rice husk. Sterilization itself aims to kill other unwanted bacteria and spores on the bag-log. Sterilization was done by traditional steaming bag-log drums arranged in four rows upwards for 6 hours. Convection pipes were built in drums. The steamer was done by performing two retrievals of data. From the experiment results, the use of convection pipe of 8 cm was better than the convection pipe of 6 cm. This is shown from the amount of fungal contamination in convection pipes were less in 8. The result of temperature measurement using dual laser infrared thermometer was also completed and interpreted using Matrix Laboratory with interpolation method to get heat distribution result.

Kinematics and dynamics of the ballistic impact behavior for an oil palm empty fruit bunch fiber reinforced bio-composite

“…This problem has become a national and international agenda; therefore, biodegradable natural or bio-based fibers, e.g., synthetic fibers, have been the center of research in the materials field for the last decade (Mohanty et al 2005). Additional reasons include: low cost, light-weight nature, specific properties that are comparable to synthetic fibers, ease of separation, sequestration of carbon dioxide, noncorrosive nature, and the ability to reduce machine, heat (global warming), and respiratory irritation (Abdurrahman et al 2019;Irzaman et al 2019). These reasons have led to increasing interest in the use of natural materials (bio fiber) as a substitute for synthetic materials, which is the primary topic in the field of biomaterials (Chauhan and Chauhan 2013).…”

Oil Palm Empty Fruit Bunches as Raw Material of Dissolving Pulp for Viscose Rayon Fiber in Making Textile Products

“…Rayon viscose fiber (RVF) is a type of semisynthetic fiber made from the regeneration process of cellulose, which can be obtained from hardwood, softwood and non-wood. The content in these raw materials is processed into a special pulp, which has certain characteristics, namely, alpha-cellulose, high brightness [ 10 , 11 , 12 , 13 ], extractive content, hemicellulose, low ash and better resistance to alkaline solutions [ 25 , 26 , 27 ]. This is called dissolving pulp, and 70% of its application is to manufacture cellulose fibers through the viscose process [ 6 , 7 , 8 ].…”

Implementation of proportional–integral control in Baglog steamer temperature control

“…𝐾𝑖 = 𝐾𝑝/𝑇𝑖 (5) From the calculation results obtained from (3), the Kp value is 25.2 and the Ti value is obtained from (4), which is 83.3, while the Ki value is obtained from (5), which is 0.302. So that the transfer function of the PI plant control parameters obtained the value of 𝐾𝑝 = 25.2, 𝐾𝑖 = 0.302.…”

“…Baglog is a growing medium from oyster mushrooms. Before entering the mushroom seeds, the Baglog must go through a sterilization process in the form of heating at high temperatures which aims to kill various pathogens and other microbes in the growing media [5]. Baglog that has been packaged is then sterilized so that the media can meet the nutritional needs of the [6].…”