What is Supercritical CO2?
Supercritical CO2 is a fluid state, where it is above its critical pressure (72.9 bar) and critical temperature (304.25 K). It is behaving neither liquid nor gas. Near the critical point, less compression work is required because of its liquid like density. Supercritical power cycle has compact turbomachinery as compare to steam power cycle.
Supercritical CO2 power generation technology offers number of advantages over conventional power generation cycle:
- Relatively compact turbomachinery as compare to steam power cycle (Reduced capital cost).
- Possibility of high thermal efficiency (>50%) at 550o C inlet temperature.
- Greenhouse gas emission reduction leads to improve environment.
- Reduced water consumption.
- Dry cooling is suitable for the gas cooler because it can be cooled by the atmospheric temperature.
Nabros Energy Solution
Nabros energy is researching on the possibility of thermal to electric power conversion technology using supercritical CO2 as a working fluid and recovered waste heat as a heat source. The main reason is high potential waste heat in cement industries, steel industries etc in India. In cement industries, kilns, ovens and furnaces generated large quantities of hot flue gases. By this recovering waste heat, we could possibly save considerable amount of fuel. In general, this technology requires less work and good conversion of thermal energy to electric energy.
S-CO2 power cycles are potentially applicable for the wide variety of power-generation applications. It can be use for high temperature heat source like fossil fuel, solar thermal, Nuclear power, Waste heat recovery and low temperature heat source like geothermal applications.
- Confirm viability of existing components and suitability of materials
- Accommodate a wide range of operating parameters and applications.
- Integrate and scale up existing technologies into a new application.