THERMAL SCIENCE

International Scientific Journal

EXPERIMENTAL INVESTIGATION OF THE INCREASING THERMAL EFFICIENCY OF AN INDIRECT WATER BATH HEATER BY USE OF THERMOSYPHON HEAT PIPE

ABSTRACT
Natural gas must be preheated prior to pressure reduction in city gate stations. Indirect water bath heaters are employed in city gate stations for preheating, consume a considerable amount of natural gas for the process. This type of heater has a low efficiency therefore a significant amount of energy is wasted. Due to the high capacity of thermosyphon heat pipe, its utilization in city gate stations heater were investigated experimentally in this paper. For this purpose, a heater set-up was manufactured and its thermal efficiency was calculated. The thermosyphon heat pipe were then designed, manufactured, and utilized between the fire tube and the gas tube. Further the type of working fluid and the range of filling ratio were discussed and the most effective state was suggested. Moreover, the thermal efficiency of the heater in the presence of thermosyphon heat pipe was investigated. The obtained results showed that the thermal efficiency of the heater improved up to 13% with the addition of thermosyphon heat pipe. The most effective state of thermosyphon heat pipe was associated with the water as working fluid with 20% filling ratio in the front route and methanol as working fluid with 30% filling ratio in the back route of the fire tube.
KEYWORDS
PAPER SUBMITTED: 2019-04-28
PAPER REVISED: 2020-01-22
PAPER ACCEPTED: 2020-01-28
PUBLISHED ONLINE: 2020-02-08
DOI REFERENCE: https://doi.org/10.2298/TSCI190428054R
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2020, VOLUME 24, ISSUE Issue 6, PAGES [4277 - 4287]
REFERENCES
  1. Azizi, S. H., et al., Study of preheating natural gas in gas pressure reduction station by the flue gas of indirect water bath heater, Res. Islam. Azad Univ. Bandar Lengeh branch, Iran, 3(2014), pp. 17-22.
  2. Farzaneh-Gord, M., et al., Feasibility of accompanying uncontrolled linear heater with solar system in natural gas pressure drop stations, Energy, 41(2012), pp. 420-428.
  3. J. Poživil, Use of expansion turbines in natural gas pressure reduction stations, Acta Montan. Slovaca, 3(2004), pp. 258-260.
  4. Khalili, E., et al., Efficiency and heat losses of indirect water bath heater installed in natural gas pressure reduction station; evaluating a case study in Iran, in Proceedings of 8th National Energy Congress, Shahrekord, Iran, (2011).
  5. Ashouri, E., et al., The minimum gas temperature at the inlet of regulators in natural gas pressure reduction stations (CGS) for energy saving in water bath heaters, Journal of Natural Gas Science Engineering, 21(2014), pp. 230-240.
  6. C. Howard, C., et al., An investigation of the performance of a hybrid turboexpander-fuel cell system for power recovery at natural gas pressure reduction stations, Applied Thermal. Engineering, 31(2011), pp. 2165-2170.
  7. Taheri, R., et al., Retrofit of Tehran city gate station by using turboexpander, in Proceedings of the Thirty Second Industrial Energy Technology Conference, New Orleans, LA, (2010).
  8. Farzaneh-Gord, M., Deymi-Dashtebayaz, M., Recoverable Energy in Natural Gas Pressure Drop Stations: A Case Study of the Khangiran Gas Refinery, Energy Exploration & Exploitation., 26(2008), pp. 71-82.
  9. Zabihi, A., Taghizadeh, M., Feasibility study on energy recovery at Sari-Akand city gate station using turboexpander, Journal of Natural Gas Science and Engineering, 3592016), pp. 152-159.
  10. Riahi, M. , et al., Optimization of combustion efficiency in indirect water bath heaters of Ardabil city gate stations, in Seventh Mediterranean Combustion Symposium, Italy, Sep 11--15, 2011.
  11. Kostowski, W. J., Usón, S., Comparative evaluation of a natural gas expansion plant integrated with an IC engine and an organic Rankine cycle, Energy Conversion. Managment, 75(2013), pp. 509-516.
  12. Teke, İ. I., et al., Determining the best type of heat exchangers for heat recovery, Applied. Thermal Engineering, 30(2010), pp. 577-583.
  13. Pandiyarajan, V., et al., Experimental investigation on heat recovery from diesel engine exhaust using finned shell and tube heat exchanger and thermal storage system, Applied Energy, 88(2011), pp. 77-87.
  14. Schneider, D., et al., Development and examination of switchable heat pipes," Applied. Thermal Engineering, 99(2016), pp. 857-865.
  15. C.-Y. Y. Weng and T.-S. S. Leu, "Two-phase flow pattern based theoretical study of loop heat pipes," Applied. Thermal Engineering, 98(2016), pp. 228-237.
  16. Khalili, M., Shafii, M. B., Experimental and numerical investigation of the thermal performance of a novel sintered-wick heat pipe," Applied. Thermal Engineering, 94(2016), pp. 59-75.
  17. S. K. MUNIAPPAN and S. K. ARUMUGAM, EXPERIMENTAL INVESTIGATIONS ON AN AXIAL GROOVED CRYOGENIC HEAT PIPE," Thermal Science, 16(2012), pp. 133-138.
  18. Behnam, P., Shafii, M. B., Examination of a solar desalination system equipped with an air bubble column humidifier, evacuated tube collectors and thermosyphon heat pipes, Desalination, 397(2016), pp. 30-37.
  19. Pouryoussefi, S. M., Zhang, Y., Numerical investigation of chaotic flow in a 2D closed-loop pulsating heat pipe, Applied Thermal Engineering , 98(2016), pp. 617-627.
  20. Savage, C. J., Mathieu, J. P., Investigation of a Variable Conductance Heat Pipe as a Gas Diode, in Advances in Heat Pipe Technology, D. A. Reay, Ed., ed: Pergamon, (1982), pp. 619-639.
  21. Ersöz, M. A, et al., Thermoeconomic analysis of thermosyphon heat pipes, Renewable & Sustainable Energy Reviews, 58(2016), pp. 666-673.
  22. HAN, W. S., Rhi, S. H., THERMAL CHARACTERISTICS OF GROOVED HEAT PIPE WITH HYBRID NANOFLUIDS, Thermal Science, 15(2011), pp. 195-206.
  23. NNAMALAI, A. S., RAMALINGAM, V., EXPERIMENTAL INVESTIGATION AND COMPUTATIONAL FLUID DYNAMICS ANALYSIS OF A AIR COOLED CONDENSER HEAT PIPE, Thermal Science, 15(2011), pp. 759-772.
  24. Wallin, P., Heat Pipe: selection of working fluid, Lund, Sweden, (2012).
  25. Shafii, M. B., et al., Experimental investigation of a novel magnetically variable conductance thermosyphon heat pipe, Applied Thermal Engineering, 126(2017), pp. 1-8.
  26. Faghri, A., Heat pipe science and technology. Global Digital Press, (1995).
  27. Yaws, C. L., Thermodynamic and physical property data. Gulf Publishing, (1992).
  28. Aboutalebi, M., et al., Experimental investigation on performance of a rotating closed loop pulsating heat pipe, International Communications in Heat and Mass Transfer, 45(2013), pp. 137-145.
  29. Imura, H., et al., Critical heat flux in a closed two-phase thermosyphon, International Journal of Heat and Mass Transfer, 26(1983), pp. 1181-1188.
  30. Harada, K. et al., Heat transfer characteristics of large heat pipe, Hitachi Zosen Technical Review, 41(1980), pp. 7-14.
  31. Noie, S. H., Heat transfer characteristics of a two-phase closed thermosyphon, Applied Thermal Engineering, 25(2005), pp. 495-506.
  32. Moffat, R. J., Describing the uncertainties in experimental results, Experimental Thermal and Fluid Science, 1(1988), pp. 3-17.
  33. MCCLINTOCK, F. A., Describing uncertainties in single-sample experiments, Mechanical Engineering, 75(1953), pp. 3-8.

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