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ISSN Print: 2381-1153 ISSN Online: 2381-1161

American Journal of Environmental Engineering and Science

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Experimental Investigation for a Hybrid Arrangement of Steam Condensers

American Journal of Environmental Engineering and Science
Vol.2 , No. 6, Publication Date: Oct. 20, 2015, Page: 62-73

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Authors

[1]	Ali Hussain Tarrad, Private Consultant Engineer/Mechanical Engineering (PhD), Copenhagen, Denmark.
[2]	Ali Farhan Altameemi, Mechanical Engineering, Adhwa Alshamal Contracting and General Trading, Baghdad, Iraq.

Abstract

This work represents an experimental investigation to assess the thermal performance of a hybrid condensation system at atmospheric pressure. A combination of the air cooled (ACC) and shell and tube (WCC) heat exchangers were used to show the steam distribution percentage and capability of each of these heat exchangers. When the air flow rate was doubled and its entering dry bulb temperature reduced from (42) to (21) °C, the (ACC) average steam loading and thermal load were increased by (22%). Pre-cooling of air gave an increase in (ACC) steam mass flow rate of (0.58-0.66) kg/hr per each degree reduction of air dry bulb temperature from (37.5°C) to (27°C) for constant air mass flow rate and surface area. The corresponding values of condensation thermal load variations were within (1.28-1.33) times.

Keywords

Hybrid, Condensation, Air Cooled, Shell and Tube, Economic

Reference

[01]	Matthew S. Layton and Joseph O.Hagan, "Comparison of Alternate Cooling Technologies for California Power Plants", Electric power research institute, Report (2002).
[02]	Larinoff M.W. and Moles W.E., "Design and Specification of Air Cooled Steam Condensers", Chemical Engineering, Vol.110, pp 143-156, (1978).
[03]	Saiz Jabarrdo, J.M., and Mamani ,W.G., "Modeling and Experimental Evaluation of Parallel Flow Micro Channel Condensers", J.Braz., Soc., Mech., Sci and Eng., Vol.25, No.2, Reo de Janeiro, Apr./June, 2003.
[04]	Tarrad, A.H., Khudor D.S and Abdul Wahed M.," A Simplified Model for the Prediction of The Thermal Performance for Cross Flow Air Cooled Heat Exchangers with A new Air Side Thermal Correlation", Engineering and Development Journal, Vol.12, No.3, September 2008.
[05]	Tarrad, A.H., Saleh, F.A., and Abdulrasool, A.A.," A Simplified Numerical Model for a Flat Continuous Triangle Fins Air Cooled Heat Exchanger Using a Step by Step Technique", Journal of Engineering and Development, Baghdad, Iraq, (2009).
[06]	Tarrad, A.H., "A Numerical Model for Performance Prediction of Dry Cooling Conditions of Air Cooled Condensers in Thermal Power Plant Stations", Journal of Engineering and Technology, Vol.28, No.16, Baghdad, Iraq, (2010).
[07]	Tarrad, A.H. and Kemal H.M., "A Model for Prediction of Surface Condenser Performance in Thermal Power Plants", Journal of Engineering and Development, vol.8, No.3, December, 2004.
[08]	Tarrad, A.H. and Majeed L.M., "The Application of Step by Step Technique for the Performance Prediction of Thermal Power Plant Surface Condensers ", Journal of Engineering, Vol.16, No.1, March, 2010.
[09]	Tarrad, A.H., "A Numerical Model for Thermal-Hydraulic Design of a Shell and Single Pass Low Finned Tube Bundle Heat Exchanger", Journal of Engineering and Technology, Vol.25, No.4, 2007.
[10]	Heyns, J.A., and Kroger D.G.," Performance Characteristics of an Air Cooled Steam Condenser Incorporating a hybrid (dry/wet) Dephlegmator", Mechanical Engineering Department, Stellenbosch University, December 2008.
[11]	National Renewable Energy Laboratory (NREL)," Hybrid Cooling System for Low-Temperature Geothermal Power Production", NREL Report, No.ARGT.0910, 2011.
[12]	Baweja, M. and Bartaria, V. N.,” A Review on Performance Analysis of Air-Cooled Condenser under Various Atmospheric Conditions”, International Journal of Modern Engineering Research (IJMER), Vol.3, Issue.1, pp-411-414, Jan-Feb. 2013
[13]	Tarrad, A. H. and Khudor, D. S., “A Correlation for the Air Side Heat Transfer Coefficient Assessment in Continuous Flat Plate Finned Heat Exchangers”, Transactions of the ASME, Journal of Thermal Science and Application, Vol. (7), No. 2, Paper No. TSEA-14-1194, DOI: 10.11151/1.4029459 2015.
[14]	Tarrad, A. H. and Al-Nadawi, A. K., “A Rating Model of Finned-Tube Condenser using Pure and Zeotropic Blend Refrigerants”, accepted for publication in German Journal of Mechanical Engineering Research, August 2015.
[15]	Thermal Conductivity of Metals, in SI unit, available from the World Wide Web (www) site: www.engineeringtoolbox.com.
[16]	Altameemi, A. F., “Study and Evaluation of the Operation Characteristics for the Condensation Load Distribution in Hybrid Systems on the Condenser Side”, MSc. Thesis, Al-Mustansiriya University, Baghdad, June 2011.
[17]	Kemal, H.M., "Performance Prediction of Power Plant Condensers Using Step By Step Method", M.Sc. Thesis, Mech. Eng. Dept., Al-Mustansiriya University, Baghdad, Iraq, June,(2001).
[18]	Woodruff, E.B., Lammers, H.B and Lammers, T.F.," Steam Plant Operation", 8 ^th Edition, 2005.
[19]	Karl R. Wilber, Kent Zammit, "Development of Procurement Guidelines for Air-Cooled Condensers", CEC/EPRI, Advanced Cooling Strategies/Technologies Conference, Sacramento, California, (2005).