Heat transfer in packed-beds of agricultural waste with low rates of air flow applicable to solid-state fermentation

Abstract

h i g h l i g h t s Paper addressed heat transfer in beds packed with agricultural waste. Air flow rate and bed height markedly affected radial temperature profiles. Beds of sugarcane bagasse are nonfavorable for heat transfer. Mixture of particles of different shapes and sizes improves heat transfer. Thermal parameters are useful for reliable simulation of bioreactors.

A novel method to assess heat transfer and impact of relevant physicochemical parameters for the scaling up of solid state fermentation systems

“…Very few recent publications studied heat transfers within an SSF system [38] , [39] , [40] , [41] . These studies are based on modeling allowing more precise control of the equipment during process.…”

A novel method to assess heat transfer and impact of relevant physicochemical parameters for the scaling up of solid state fermentation systems

“…Very few recent publications studied heat transfers within an SSF system [38] , [39] , [40] , [41] . These studies are based on modeling allowing more precise control of the equipment during process.…”

Development and temperature gradient online monitoring of a vehicular rotary solid‐state bioreactor: a novel device for large‐scale preparation of Aspergillus niger spore inoculum

“…The multipoint online temperature measurement of solid‐state bioreactors has garnered research interest for a long time . However, because previous reports had not constructed matrices of temperature sensors, an accurate and dense 4D inner bed profile including radius, height, temperature and cultivation time was not provided by real measurement.…”

Water Holding Capacity and Heat Transfer Aspects of a Mixture of Sugar Cane Bagasse and Wheat Bran in a Partially Filled Rotating Drum

“…Temporal temperature profiles in a bed of a SCB/WB mixture, with water sprinkling at 65 o C and 2.5 L min -1 and drum rotation at 1 rpm (T in = 45 ºC; RH = 91,53%; Q = 5 L min -1 ; T b,0 = 25 ºC; U b,0 = 50%; T w = 45 ºC). effective thermal properties of agricultural wastes are very low (Casciatori et al, 2013;Casciatori and Thoméo, 2018). The only operational alternatives in packed beds are the increase of the air flow rate and the reduction of the bed wall temperature, alternatives that would cause serious concerns to the cultivation process.…”

A novel method to assess heat transfer and impact of relevant physicochemical parameters for the scaling up of solid state fermentation systems

“…Very few recent publications studied heat transfers within an SSF system [38] , [39] , [40] , [41] . These studies are based on modeling allowing more precise control of the equipment during process.…”

Development and temperature gradient online monitoring of a vehicular rotary solid‐state bioreactor: a novel device for large‐scale preparation of Aspergillus niger spore inoculum

“…The multipoint online temperature measurement of solid‐state bioreactors has garnered research interest for a long time . However, because previous reports had not constructed matrices of temperature sensors, an accurate and dense 4D inner bed profile including radius, height, temperature and cultivation time was not provided by real measurement.…”

Water Holding Capacity and Heat Transfer Aspects of a Mixture of Sugar Cane Bagasse and Wheat Bran in a Partially Filled Rotating Drum

“…Temporal temperature profiles in a bed of a SCB/WB mixture, with water sprinkling at 65 o C and 2.5 L min -1 and drum rotation at 1 rpm (T in = 45 ºC; RH = 91,53%; Q = 5 L min -1 ; T b,0 = 25 ºC; U b,0 = 50%; T w = 45 ºC). effective thermal properties of agricultural wastes are very low (Casciatori et al, 2013;Casciatori and Thoméo, 2018). The only operational alternatives in packed beds are the increase of the air flow rate and the reduction of the bed wall temperature, alternatives that would cause serious concerns to the cultivation process.…”

A novel method to assess heat transfer and impact of relevant physicochemical parameters for the scaling up of solid state fermentation systems

“…Very few recent publications studied heat transfers within an SSF system [38] , [39] , [40] , [41] . These studies are based on modeling allowing more precise control of the equipment during process.…”

Development and temperature gradient online monitoring of a vehicular rotary solid‐state bioreactor: a novel device for large‐scale preparation of Aspergillus niger spore inoculum

“…The multipoint online temperature measurement of solid‐state bioreactors has garnered research interest for a long time . However, because previous reports had not constructed matrices of temperature sensors, an accurate and dense 4D inner bed profile including radius, height, temperature and cultivation time was not provided by real measurement.…”

Water Holding Capacity and Heat Transfer Aspects of a Mixture of Sugar Cane Bagasse and Wheat Bran in a Partially Filled Rotating Drum

“…Temporal temperature profiles in a bed of a SCB/WB mixture, with water sprinkling at 65 o C and 2.5 L min -1 and drum rotation at 1 rpm (T in = 45 ºC; RH = 91,53%; Q = 5 L min -1 ; T b,0 = 25 ºC; U b,0 = 50%; T w = 45 ºC). effective thermal properties of agricultural wastes are very low (Casciatori et al, 2013;Casciatori and Thoméo, 2018). The only operational alternatives in packed beds are the increase of the air flow rate and the reduction of the bed wall temperature, alternatives that would cause serious concerns to the cultivation process.…”