Simulation And Experimental Study Of Absorption And Heat Up Kalina Power Generation Cycle

The temperature of Kalina geothermal power plant tail water is high. In order to solve the problem, a novel Kalina cycle called absorption and heat up kalina cycle(AH-KC) which combined absorption heat transformer is proposed in this paper. The geothermal tail water which has heat exchanged in generator is viewed as the drive heat source for the absorption heat transformer, and the heat released in the absorber during the process is absorbed by the basic ammonia water whose temperature is low, which results to a higher temperature in the generator inlet and lead to a higher ammonia vapor mass flow. The thermal calculation model of AH-KC is written by EES in this paper, and the feasibility in theory is analyzed. At the same time, ASPEN Plus software is used to validate.The result shows that under the same conditions, compared to Kalina cycle, the net power output has an increase of 6.8% from 2098.7 kW to 2241.24 kW. The net power output is increased with the increase of heat source temperature, but the optimum thermal efficiency is existed, and the corresponding heat resource temperature is about 110?. The cooling water temperature has a relation with the turbine exhaust pressure and basic ammonia-water concentration. The calculation result shows that a higher concentration is match with a broader temperature of cold source. The net power output is increased with the turbine inlet pressure firstly, but the power consumption of feed pump would has a sharply increase and results to the decrease of net power output. Besides, the net power output is increased with the increase of ammonia water concentration. While the concentration is beyond the optimum concentration it would be decreased. Of course different optimum concentrations are match with different pressure.Based on the theory, a further research is needed to carry on. The core component – absorption and heat up(AH) subsystem is designed and the factors which can influence the performance are studied. The high temperature of heat source and the high basic solution concentration are benefit to the performance of AH subsystem, but the high temperature of cold source is harmful. Ensuring the fluid in the tubes of absorber keep in turbulent state is benefit to the performance of AH subsystem. At the same time, the increase of mass flow ratio(poor ammonia solution pump/ saturated ammonia pump) is benefit to the performance to an extent, but it will no use once the mass flow ratio in beyond the optimum ratio. Nanoparticles can improve the performance to some extent, but there exists a best proportion(0.3%).