This paper proposes an approach for improving the plant efficiency by reducing the heat rejection temperature of power cycle using Kalina Cycle System 11 (KCS11) which is integrated at the steam condenser of a 500 MWe SubC (subcritical) coal-fired power plant. It is modelled by using power plant simulation software ‘Cycle Tempo’ at different plant operating conditions. Results show t...

In order to recover the energy loss due throttling in path of ammonia-lean solution Kalina Cycle System (KCS) 34, two redesigned cycles, which single-screw expanders that can perform two-phase expansion are used replace throttle valve, proposed this paper. The results show thermal efficiency and net work cycles higher than those original KCS 34. With concentration increase ammonia-water mixture...

Abstract Today, due to the challenges of fossil fuels and environmental crises, use geothermal energy as a renewable source can be useful. Since two wells used for Sabalan power plant have different thermodynamic, in present article, new combined layout based on flash cycles is proposed investigated. In introduced cycle, transcritical Rankin Kalina are also downstream generate more power. addit...

In order to improve the utilization efficiency of low-temperature heat sources, a new combined cooling and power system using ammonia–water is proposed. The combines Kalina cycle with absorption refrigeration cycle, in which waste serves as source cycle. steady-state mathematical model established detail first, then simulation results design condition are obtained, show that thermal exergy can ...