Thermoeconomic Optimization of a LiBr/H2O Absorption Chiller Using Structural Method
Author:
Misra R. D.1, Sahoo P. K.2, Gupta A.2
Affiliation:
1. Mechanical Engineering Department, National Institute of Technology, Silchar-788 010, India 2. Mechanical and Industrial Engineering Department, Indian Institute Technology Roorkee, Roorkee-247 667, India
Abstract
The optimization strategy for absorption chiller systems is generally based on thermodynamic analysis. However, the optimum, so obtained, does not always guarantee the economic optimum. In this regard, the thermoeconomics that combines the thermodynamic principles with economic parameters plays a vital role for achieving the cost effectiveness of these systems. In this paper, this technique is applied to optimize a single-effect LiBr/H2O absorption chiller system for air-conditioning applications aiming at achieving the minimum product cost. This optimization methodology is based on the relative interdependence between component irreversibility and the total system irreversibility. This relationship, known as structural coefficient, is used to evaluate the economic cost of the product of the system. The use of structural coefficient eliminates complex numerical procedures, and the optimization is achieved by sequential local optimization of the subsystems of the system. The analysis reveals that the capital cost of the optimum configuration is increased by about 33.3% from the base case, however, the additional cost is well compensated by reduced fuel cost. This is possible because of reduction of plant irreversibilities by about 47.2%.
Publisher
ASME International
Subject
Geochemistry and Petrology,Mechanical Engineering,Energy Engineering and Power Technology,Fuel Technology,Renewable Energy, Sustainability and the Environment
Reference18 articles.
1. Chua, H. T., Toh, H. K., Malek, A., Ng, K. C., and Srinivason, K., 2000, “A General Thermodynamic Framework for Understanding the Behavior of Absorption Chillers,” Int. J. Refrig., 23, pp. 412–429. 2. Pons, M., Meunier, F., Cacciola, G., Critoph, R. E., Groll, M., Puigjaner, L., Spinner, B., and Zeigle, F., 1999, “Thermodynamic Based Comparison of Sorption Systems for Cooling and Heat Pumping,” Int. J. Refrig., 22(1), pp. 5–17. 3. Lamp, P., and Zeigler, F., 1998, “European Research on Solar Assisted Air-Conditioning,” Int. J. Refrig., 21(2), pp. 89–99. 4. Best, R., and Pilatowasky, I., 1998, “Solar Assisted Cooling with Sorption Systems: Status of Research in Mexico and Latin America,” Int. J. Refrig., 21(2), pp. 100–115. 5. Kotas, T. J., 1985, The Exergy Method of Thermal Plant Analysis, Butterworths, London.
Cited by
30 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
|
|