Comparison between a Fixed and a Tracking Solar Heating System for a Thermophilic Anaerobic Digester

Abstract

In this paper two alternative solar methods are evaluated for the methane generating system using the municipal solid waste, MSW in urban zones. The analytic method evaluates the use of flat solar collector; in one case they are remaining fixed and the other case they have a solar tracking system. The analytic results shown that the needs of conventional energy to the generation biogas system were minors using the solar tracking system.

Improvement of Biogas Quality and Quantity for Small-Scale Biogas-Electricity Generation Application in off-Grid Settings: A Field-Based Study

“…This feature makes them good heating sources for various applications [74][75][76]. Although solar tracking would generate more thermal energy from the sun as compared to a fixed system [77], if moving parts are used, the operational and maintenance costs for small-scale biogas-electricity generation systems will increase. To enhance actual implementation, the digester should be designed in such a way to minimise the heat transfer area and total costs [78].…”

Current state of biogas and biomethane production and its implications for Spain

“…5 In addition, its potential for the generation of electricity and heat varies depending on the amount of waste digested, although high potentials between 300 000–400 000 MW h per year can be obtained with an average input of 1000–2000 tons per day in a digester. 6…”

“…5 In addition, its potential for the generation of electricity and heat varies depending on the amount of waste digested, although high potentials between 300 000-400 000 MW h per year can be obtained with an average input of 1000-2000 tons per day in a digester. 6 When biogas is properly puried, its methane percentage increases to concentrations of more than 90% in most cases, resulting in the gas known as biomethane. This renewable gas can be used as an alternative fuel for vehicles, replacing other more polluting fuels such as diesel and petrol, and it can also be injected into the natural gas network to supply energy to industries and households.…”