Energy analysis of hazelnut drying system‐assisted heat pump |
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| Authors: | ?lhan Ceylan Mustafa Akta? |
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| Affiliation: | 1. Mechanical Education Department, Technical Education Faculty, Karabük University, 78100 Karabük, The Republic of Turkey;2. Mechanical Education Department, Technical Education Faculty, Gazi University, Teknikokullar, 06503 Ankara, The Republic of Turkey |
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| Abstract: | In this experimental study, a proportional integral derivative (PID) controlled heat pump dryer was designed and manufactured. Heat pump dryer was tested drying of hazelnut and energy analyses were made. Drying air temperatures were changed as 50,45 and 40°C in the drying system. Drying air velocities were changed as 0.25 m s?1 for 50°C, 0.32 m s?1 for 45°C and 0.38 m s?1 for 40°C. Heating coefficient of performance of whole system (COPws) of the heat pump dryer was calculated as 1.70 for 50°C, 1.58 for 45°C and 1.40 for 40°C drying air temperatures. Energy utilization ratio changed between 24 and 65% for 50°C, 17 and 63% for 45°C and 14 and 43% for 40°C drying air temperatures in the heat pump dryer. Copyright © 2008 John Wiley & Sons, Ltd. |
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| Keywords: | hazelnut drying heat pump dryer energy analysis PID control |
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