1：Experimental Design and Method Selection:

The study uses a method of comparative analysis to evaluate the feasibility of a solar system for compensating heat losses in a methanogenesis reactor. Calculations are based on solar radiation data from NASA's climatological database and energy balance data from the reactor.

2：Sample Selection and Data Sources:

Data on solar radiation is sourced from the NASA SSE database for the geographical coordinates of Orenburg (51°46'21" N, 55°5'55" E). Energy balance data for the 25 m3 methanogenesis reactor is referenced from prior studies.

3：List of Experimental Equipment and Materials:

Solar collectors (specifically vacuum collectors like Viessmann Vitosol 200-T), a biogas boiler, and related heating system components are considered. No specific experimental equipment is mentioned for direct use in this analysis, as it is a theoretical calculation study.

4：Experimental Procedures and Operational Workflow:

The procedure involves calculating the required number of solar collectors using formulas based on solar radiation and heat loss data. A schematic diagram for a combined heating system with solar collectors and a biogas boiler is proposed.

5：Data Analysis Methods:

Data analysis includes calculating the surface area and number of solar collectors needed, fuel savings from biogas, and economic feasibility using cost data for collectors and biogas.