설비공학논문집 (Korean Journal of Air-Conditioning and Refrigeration Engineering)

  • 제29권7호
  • /
  • Pages.360-365
  • /
  • 2017
  • /
  • 1229-6422(pISSN)
  • /
  • 2465-7611(eISSN)
대한설비공학회 (The Society of Air-Conditioning and Refrigerating Engineers of Korea)
권호 표지
DOI QR코드

DOI QR Code

이중 효용과 일중 효용을 복합한 다단 재생 고효율 흡수식 냉동 사이클 개발

Development of High Efficiency Cycle by Combining Double-Effect with Single-Effect Absorption Chiller Systems

  • 윤상국 (한국해양대학교 기계공학부)
  • Yun, Sang Kook (Division of Mechanical Engineering, Korea Maritime and Ocean University)
  • 투고 : 2017.03.26
  • 심사 : 2017.05.10
  • 발행 : 2017.07.10
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Recently, development efforts of triple-effect absorption chiller have been increased in order to improve the efficiency of double-effect absorption chiller. However, triple-effect absorption chiller has some disadvantages, including high corrosion characteristic of LiBr solution at high temperature of $200^{\circ}C$. Moreover, it is necessary to develop new components for operation under high pressure of 2 bars even though COP is increased to 1.6 or 1.7. The objective of this study was to introduce a new system by combining double effect absorption chiller with single effect absorption chiller with multi-generators using bypass flow of LiBr dilute solution to $3^{rd}$ generator to overcome the disadvantages of triple-effect chiller and improve energy efficiency. Results indicate that the new absorption cycle had a much higher efficiency than double-effect chiller system, showing significant improvement when bypass solution flow rate of 25% was applied to the $3^{rd}$ generator using the main dilute solution of the absorber. The COP of the new chiller system was found to be 1.438, which was 21.7% higher than that (1.18) of the present double-effect system. The COP was decreased when solution by-pass rate to the $3^{rd}$ generator was increased. In addition, lower cooling water temperature caused higher COP. Therefore, the multi-generator system with by-pass solution might be an excellent chiller alternative to triple-effect absorption chiller with higher efficiency.

키워드

참고문헌

  1. Woo, S. M., Kim, H. S., Kim, K. Y., and Lee, S. Y., 2016, Development of Triple Effect Gas Fired Absorption Chiller, Proceedings of the Air-conditioning and Refrigeration Engineering Summer Annual Meeting, pp. 156-159.
  2. Ryu, J. S., Kim, C. G., Lee, Y. S., Song, H. G., and Park, J. H., 2015, Development of Single effect/Double Lift Absorption Chiller and Heater with Domestic Hot Water for a District Heating Net Work, Proceedings of the Air-conditioning and Refrigeration Engineering Summer Annual Meeting, pp. 644-648.
  3. Park, J. M. and Jeong, S. Y., 2016, Comparative Simulation of Triple-Effect Absorption Chiller Cycles with Various Solution Flows, Proceedings of the Air-conditioning and Refrigeration Engineering Summer Annual Meeting, pp. 145-148.
  4. Shin, Y. G., Seo, J. A., Cho, H. W., Nam, S. C., and Jeong, J. H., Development of a Dynamic Model for Double-Effect LiBr-$H_2O$ Absorption Chillers and Comparison with Experimental Data, Korean Journal of Air-conditioning and Refrigeration Engineering, Vol. 20, No. 12, pp. 781-788.
  5. Mori, Kiyoyuki, Oka, Masahiro, 2003, Development of Triple-effect Absorption Chiller-Heater, 22nd World Gas Conference, Tokyo.
  6. Solanki, A., Singh, S. K., and Pal, Y., 2015, Performance Evaluation of Triple Effect Vapour Absorption Cooling System, International Conference on Science, Management, Engineering and Technology, pp. 53-59.
  7. Azhar, M. and Siddiqui, M. A., 2013, Thermodynamic Analysis of a Gas Operated Triple Effect Absorption Cycle, International Journal of Innovative Research in Science, Engineering and Technology, Vol. 2, No. 5, pp. 1610-1616.
  8. Park, C. W., 2006, A Study on the COP Improvement of Absorption Chillers by Recovering Heat from the Condenser, Korean Journal of Air-conditioning and Refrigeration Engineering, Vol. 18, No. 9, pp. 738-745.
  9. Yoon, J. S., Kwon, O. K., Cha, D. A., Bae, K. J., Kim, I. G., Kim, M. S., and Park, C. W., 2017, Effects of Operation Conditions on the Performance of Type II LiBr-$H_2O$ Absorption Heat Pump, Korean Journal of Airconditioning and Refrigeration Engineering, Vol. 29, No. 1, pp. 7-14.
  10. Yang, M. N., Jung, C. W., and Kang, Y. T., 2015, Development of High Efficiency Cycles for the Double-Effect Absorption Cycles Using Multi-heat Source for Trigen Application, Proceedings of the Air-conditioning and Refrigeration Engineering Summer Annual Meeting, pp. 27-30.
  11. Kim, S. S., Oh, M. K., Jeon, S. H., and Kang, Y. T., 2003, Simulation and Cost Estimation of Energy Transportation at Ambient Temperature Using an Absorption System, Korean Journal of Air-conditioning and Refrigeration Engineering, Vol. 15, No. 12, pp. 1028-1034.
  12. Park, J. M. and Jeong S. Y., 2016, Comparative Simulation of Triple-Effect Absorption Chiller Cycles with Various Solution Flows, Proceedings of the Air-conditioning and Refrigeration Engineering Summer Annual Meeting, pp. 145-148.