Increased Efficiency of Solar-Powered Absorption Thermotransformers

Abstract

The physicochemical properties of activated carbons (AC) were investigated in order to determine their basic characteristics that define the absorption capacity of activated carbons with different absorbates (coolants). The absorption capacities of the working pairs AC–ammonia, AC–methylamine, and AC–ethylamine were investigated. Specific parametric coefficients for the Dubinin–Radushkevich structural equation were obtained. The experimental dependence of the daily cycle of solar-powered thermotransformers working with the pair AC–ammonia was presented and proved the positive effect of the work. The thermodynamic efficiencies of solar-powered thermotransformers with the working pairs were determined from the exergy coefficients and suggested areas for efficient application of solar-powered thermotransformers.