Main Article Content
In the present study, the operating temperatures of the mechanical heat pump (MHP) in waste heat recovery were investigated to elucidate the effect of control parameters such as compressor speed, wastewater temperature and mass flow rate. The experimental trials were performed using the Taguchi L27 full factorial orthogonal array, and the results were optimized for compressor suction gas temperature, compressor discharge gas temperature, temperature difference of water entering and leaving the evaporator, temperature difference of water entering and leaving the condenser, evaporation temperature and condensation temperature. Analysis of variance was conducted to determine the effect of the control factors on the operating temperatures of MHP. The analysis results show that the wastewater temperature was the most significant factor on compressor suction gas temperature and discharge gas temperature. The compressor speed has shown a meaningful effect on the temperature difference of water entering and leaving from condenser. The nominal levels of control factors and the optimal temperatures were specified for the studied experimental parameters. Prediction models were developed for the operating temperatures through the Taguchi method (TM) and the operating temperatures were predicted with a mean squared error less than 12%.
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Authors retain copyright of the published article and have the right to use the article in the ways permitted to third parties under the - Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International (CC BY-NC-ND) licence. Full bibliographic information (authors, article title, journal title, volume, issue, pages) about the original publication must be provided and a link must be made to the article's DOI.
The authors and third parties who wish use the article in a way not covered by the the -Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International (CC BY-NC-ND) licence must obtain a written consent of the publisher. This license allows others to download the paper and share it with others as long as they credit the journal, but they cannot change it in any way or use it commercially.
Authors grant to the publisher the right to publish the article, to be cited as its original publisher in case of reuse, and to distribute it in all forms and media.
 Lazzarin R.M. Heat pumps in industry-I. Equipment. Heat Recovery System CHP, 14 (1994), 6, pp.581-597.
 Lazzarin R.M. Heat pumps in industry-II. Applications. Heat Recovery System CHP, 15 (1995), 3, pp.305-317.
 Reay D.A., Macmichael D.B.A. Heat pumps design and applications. Oxford: Pergamon Press, 1979.
 Wittwer D. Environmental benefits of heat pumps. International Sustainable Energy Organization for renewable energy and energy efficiency, ISEO, 2000.
 Ozgener O., Hepbasli A. Experimental performance analysis of a solar assisted ground-source heat pump greenhouse heating system. Energ Buildings, 37 (2005), 1, pp.101-110.
 Tran C.T., Rivière P., Marchio D., Arzano-Daurelle C. In situ measurement methods of air to air heat pump performance. International Journal of Refrigeration, 36 (2013), pp.1442-1455.
 Cakır U., Comaklı K., Comaklı O., Karslı S. An experimental exergetic comparison of four different heat pump systems working at same conditions: As air to air, air to water, water to water and water to air. Energy, 58 (2013), pp.210-219.
 Lee J.S., Park H., Kim Y. Transient performance characteristics of a hybrid ground-source heat pump in the cooling mode. Apply Energy, 123 (2014), pp.121-128.
 Li R, Ooka R., Shukuya M. Theoretical analysis on ground source heat pump and air source heat pump systems by the concepts of cool and warm energy. Energy Buildings, 75 (2014), pp.447- 455.
 Chaturvedi S.K., Gagrani V.D., Abdel-Salam T.M. Solar-assisted heat pump–A sustainable system for low-temperature water heating applications. Energy Conversation & Management, 77 (2014), pp.550–557.
 Jung H.W., Kang H., Chung H., Ahn J.H., Kim Y. Performance optimization of a cascade multi- functional heat pump in various operation modes. International Journal of Refrigeration, 42 (2014), pp.57-68.
 Baek N.C., Shin U.C., Yoon J.H. A study on the design and analysis of a heat pump heating system using wastewater as a heat source. Solar Energy, 78 (2005), pp.427–440.
 Huang K., Wang H., Zhou X. Heat pump for school bathroom heat recovery. Renewable Energy Resources and a Greener Future ICEBO2006, Shenzhen, China, 2006.
 Ajah A.N., Mesbah A., Grievink J., Herder P.M., Falcao P.W., Wennekes S. On the robustness, effectiveness and reliability of chemical and mechanical heat pumps for low-temperature heat source district heating: A comparative simulation-based analysis and evaluation. Energy, 33 (2008), pp. 908–929.
 Pulat E., Etemoglu A.B., Can M. Waste-heat recovery potential in Turkish textile industry: Case study for city of Bursa. Renewable Sustainable Energy Reviews, 13 (2009), pp.663–672.
 Salah El-Din M.M. Optimal utilization of waste heat from heat engines by use of a heat pump. Energ Convers Manage 40 (1999), pp.937-949.
 Braun J.E., Bansal P.K., Groll E.A. Energy efficiency analysis of air cycle heat pump dryers. International Journal of Refrigeration, 25 (2002), pp. 954–965.
 Soylemez M.S. Optimum heat pump in drying systems with waste heat recovery. Journal of Food Engineering 74 (2006), pp. 292–298.
 Pal U.S., Khan M.K., Mohanty S.N. Heat pump drying of green sweet pepper. Drying Technology 26 (2008), pp.1584–1590.
 Minea V. Drying heat pumps-Part I: System integration. International Journal of Refrigeration, 36 (2013), pp. 643-658.
 Chamoun M., Rulliere R., Haberschill P., Peureuxb J.L. Experimental and numerical investigations of a new high temperature heat pump for industrial heat recovery using water as refrigerant. International Journal of Refrigeration, 44 (2014), pp.177-188.
 Bendell A., Disney J., Pridmore W.A. Taguchi methods: Applications in world industry. New York:Springer-Verlag,1989.
 Eşme U. Application of Taguchi method for the optimization of resistance spot welding process. Arabian Journal for Science and Engineering, 34 (2009), (2B), pp.519-528.
 Roy R.K. A primer on the Taguchi method. 2nd ed. Michigan: Society of Manufacturing Engineers, 2010.
 Comakli O., Celik C., Erdogan S. Determination of optimum working conditions in heat-pumps using nonazeotropic refrigerant mixtures. Energy Conversation & Management, 40 (1999), pp.193-203.
 Comakli K., Simsek F., Comakli O., Sahin B. Determination of optimum working conditions R22 and R404A refrigerant mixtures in heat-pumps using Taguchi method. Apply Energy, 86 (2009), pp.2451-2458.
 Coşkun S., Motorcu A.R., Yamankaradeniz N., Pulat E. Evaluation of control parameters’ effects on system performance with Taguchi method in waste heat recovery application using mechanical heat pump. International Journal of Refrigeration, 35 (2012), pp.795-809.
 Sivasakthivel T., Murugesan K., Thomas H.R. Optimization of operating parameters of ground source heat pump system for space heating and cooling by Taguchi method and utility concept. Apply Energy, 116 (2014), pp.76–85.
 Verma V., Murugesan K. Optimization of solar assisted ground source heat pump system for space heating application by Taguchi method and utility concept. Energy Buildings, 82 (2014), pp. 296-309.
 Bhoite I., Rahane A., Sode D., Sawant C., Ingole Y.R., Khaire P.D. Thermal analysis of heat pipe using Taguchi method. UREAT International Journal of Research in Engineering and Advanced Technology, 2 (2014), 2, pp. 1-5.
 Lu S.M., Li Y.C.M., Tang J.C. Optimum design of natural circulation solar-water-heater by the Taguchi method. Energy, 28 ( 2003), pp.741-750.
 Pinar A.M., Uluer O., Kırmaci V. Optimization of counter flow Ranque-Hilsch vortex tube performance using Taguchi method. International Journal of Refrigeration, 32 (2009), pp.1487- 1494.
 Chen H.C., Chung C.C., Wang H.Y., Huang T.C. Application of Taguchi method to optimize extracted ginger oil in different drying conditions. IPCBEE 2011 International Conference on Food Engineering and Biotechnology, 9 (2011), pp. 310-316.
 Asilturk İ., Akkuş H. Determining the effect of cutting parameters on surface roughness in hard turning using the Taguchi method. Measurement, 44 (2011), pp. 697-1704.
 Hasçalık A., Çaydaş U. Optimization of turning parameters for surface roughness, and tool life based on the taguchi method. International Journal of Advanced Manufacturing Technology 2008;38:896-903.
 Köksoy O., Muluk Z.F. Solution to the Taguchi’s problem with correlated responses. Gazi University Journal of Science. 17 (2004), 1, pp.59-70.
 Ross P.J. Taguchi techniques for quality engineering. New York;McGraw-Hill:1996.
 Çiçek A., Kıvak T., Samtaş G. Application of Taguchi method for surface roughness and roundness error in drilling of AISI 316 stainless Steel. Strojniški vestnik - Journal of Mechanical Engineering, 58 (2012), 3, pp.165-174