The vortex layer apparatus as a source of low-grade heat in the process of pretreatment of the substrate before anaerobic digestion

The limiting stage of anaerobic digestion (AD) of organic waste is the hydrolysis of particulate organic matter. One of the most promising and energy-efficient methods of waste pretreatment before AD is its processing in a vortex layer apparatus (VLA). The work was aimed at experimentally determinin...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2021-12, Vol.938 (1), p.12004
Main Authors: Kovalev, Andrey A, Kovalev, Dmitriy A, Grigoriev, Victor S, Litti, Yuriy V
Format: Article
Language:English
Subjects:
Anaerobic digestion
Anaerobic processes
Cooling water
Electricity
Electricity consumption
Energy balance
Energy efficiency
Experimental data
Heat
Heat exchangers
Heat generation
Heat pumps
Organic matter
Organic wastes
Particulate organic matter
Pretreatment
Substrates
Water temperature
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Summary:The limiting stage of anaerobic digestion (AD) of organic waste is the hydrolysis of particulate organic matter. One of the most promising and energy-efficient methods of waste pretreatment before AD is its processing in a vortex layer apparatus (VLA). The work was aimed at experimentally determining the energy characteristics of VLA. The description of the experimental plant and its energy balance were given. The ranges of electricity consumption and heat generation were shown. According to experimental data, the coefficient of conversion of electricity into heat was in the range of 0.367-0.515 at a cooling water temperature of 10.6-11.7 oC. Based on the experimental data obtained, it can be argued that VLA is a stable source of low-grade heat that can be utilized using heat pumps.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/938/1/012004