Effect of roller layout on biomass bales quality and baling energy consumption during rotary compression

Abstract

Baling cellulosic biomass into round bales is an effective way to reduce the cost of storage and transportation. To improve the quality of bales and reduce the baling energy consumption, this paper introduces the steel roller layout parameters of the round baler into the biomass baling process. Alfalfa was used as an experimental material for five levels pitch value of roller circumferential layout baling experiments. The results showed that the introduction of chamber non-roundness (pitch value of roller circumferential layout) destroyed the formation of the entanglement high density ring cylindrical shell lamination of the outer layer of bales, which was beneficial to the compression of bales core material. When the pitch value was 30 mm, the maximum baling pressure, radial pressure transfer loss, and the baling energy consumption of baler were reduced by 30.4%, 33.4%, and 13.7%, respectively. When the pitch value was 60 mm, the relaxation ratio and radial density difference were reduced by 6.3% and 35.8%, respectively, and the radial density uniformity of alfalfa bale was increased by 32.0%. The experimental results provide a theoretical basis and technical support for the chamber structural optimization design of the round baler.

Compression creep characteristics of crushed sugarcane end-leaves

“…The reasonable use of SEL through silage technology can solve the problem of food shortage of cattle and sheep in winter, reduce the cost of farming, and reduce the pressure of farmers' farming (Peng et al 2020). Since crushed SEL is a loose elastic viscous material with low bulk density and large volume, crushed SEL takes up a lot of space in storage and transport (Zhang et al 2023), which increases the storage and transport costs. Moreover, the creep characteristics of rolled bales of crushed SEL have a great influence on the density, and the phenomenon of strain increase with time leads to the decrease in the density of crushed SEL silage, which is prone to moulding.…”