Method for conversion of low temperature heat to electricity and cooling, and system therefore

US9429046B2 · kind B2 · utility

Assignee

• CLIMEON AB · SE

Inventors

• Thomas Öström · Stockholm, SE
• Joachim Karthauser · Sollentuna, SE

Key dates

• Filing date: Mar 22, 2012
• Grant date: Aug 30, 2016
• Expiry date: Nov 17, 2032

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F25B2309/00
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method for producing electrical energy is disclosed which uses a heat source, such as solar heat, geothermal heat, industrial waste heat or heat from power production processes, providing heat of 150° C. or below, further comprising an absorber system in which a working gas, primarily carbon dioxide CO2, is absorbed into an absorbent, typically an amine, further comprising a reactor which receives heat from said heat source and in which the absorbent-CO2 mixture is split into CO2 and absorbent, further comprising an expansion machine, an electricity generator and auxiliary equipment such as pumps, pipes and heat exchangers. The system according to the method allows the cost-efficient production of electrical energy and cooling using low value heat source.