Designing and testing a heat pump unit for drying, low-temperature processing, and storing of food products

Authors

DOI:

https://doi.org/10.15587/1729-4061.2024.313339

Keywords:

dryer, heat pump, food storage, low-temperature treatment, refrigeration machine

Abstract

The use of heat pumps makes it possible to reduce energy consumption in drying processes. This study addresses the problem of efficient use of a heat pump for drying, low-temperature processing, and storage of food products. The object of the study is a heat pump unit capable of operating under the drying mode or under the refrigeration processing and storage mode. Studies have been conducted to design an experimental unit, as well as to improve the energy efficiency of the cooling system. The unit includes a single-stage freon compressor, two air condensers, a water-cooled coil heat exchanger-precondenser, an air evaporator, a thermostatic valve, axial fans, and a unit control system. It has been experimentally established that, depending on the temperature level of condensation of the refrigerant (from +20 °C to +50 °C), the increase in specific cooling capacity with the heat exchanger-precondenser turned off is from 82 kJ/kg to 135 kJ/kg, and with it turned on – from 98 kJ/kg to 143 kJ/kg. In this case, the specific work of compression of refrigerant vapors in the compressor with the heat exchanger-precondenser switched off changes from 36 kJ/kg to 18 kJ/kg. And when it is switched on – from 32 kJ/kg to 10 kJ/kg. That is, the reduction in specific energy consumption is from 4 kJ/kg to 8 kJ/kg, which indicates the advisability of including the precondenser in the installation scheme. In the installation, refrigeration treatment and storage of the product can be carried out in the temperature range from –20 °C to +20 °C and drying – from +10 °C to +40 °C. Under such modes, it is possible to obtain high-quality products with long shelf lives. The results could be used to improve the designs and optimize the operation of heat-transfer drying units and their engineering calculations

Author Biographies

Zhanserik Zhuman, South Kazakhstan University named after M. Auezov

Doctoral Student

Department of Technology and Food Safety

Nurlan Khanzharov, South Kazakhstan University named after M. Auezov

Candidate of Technical Sciences, Associated Professor

Department of Technology and Food Safety

Bakhytkul Abdizhapparova, South Kazakhstan University named after M. Auezov

Candidate of Technical Sciences, Associated Professor

Department of Food Engineering

References

  1. Okos, M., Campanella, O., Narsimhan, G., Singh, R., Weitnauer, A. (2006). Food Dehydration. Handbook of Food Engineering, Second Edition, 601–744. https://doi.org/10.1201/9781420014372.ch10
  2. Kohli, D., Sharma, M., Champawat, P. S., Mudgal, V. D., Soni, N. (2022). Heat Pump drying of Food Product: A Review. Octa J. Biosci., 10 (2), 124–133. Available at: http://sciencebeingjournal.com/sites/default/files/Octa%20J.%20Biosci.%20Vol.%2010%20(2)124-133_0.pdf
  3. Lazzarin, R. M. (1994). Heat pumps in industry – I. Equipment. Heat Recovery Systems and CHP, 14 (6), 581–597. https://doi.org/10.1016/0890-4332(94)90029-9
  4. Lazzarin, R. M. (1995). Heat pumps in industry II: Applications. Heat Recovery Systems and CHP, 15 (3), 305–317. https://doi.org/10.1016/0890-4332(95)90014-4
  5. Patel, K. K., Kar, A. (2011). Heat pump assisted drying of agricultural produce – an overview. Journal of Food Science and Technology, 49 (2), 142–160. https://doi.org/10.1007/s13197-011-0334-z
  6. Salehi, F. (2021). Recent Applications of Heat Pump Dryer for Drying of Fruit Crops: A Review. International Journal of Fruit Science, 21 (1), 546–555. https://doi.org/10.1080/15538362.2021.1911746
  7. Goh, L. J., Othman, M. Y., Mat, S., Ruslan, H., Sopian, K. (2011). Review of heat pump systems for drying application. Renewable and Sustainable Energy Reviews, 15 (9), 4788–4796. https://doi.org/10.1016/j.rser.2011.07.072
  8. Loemba, A. B. T., Kichonge, B., Kivevele, T. (2022). Comprehensive assessment of heat pump dryers for drying agricultural products. Energy Science & Engineering, 11 (8), 2985–3014. https://doi.org/10.1002/ese3.1326
  9. Uthpala, T. G. G., Navaratne, S. B., Thibbotuwawa, A. (2020). Review on low‐temperature heat pump drying applications in food industry: Cooling with dehumidification drying method. Journal of Food Process Engineering, 43 (10). https://doi.org/10.1111/jfpe.13502
  10. Su, W., Ma, D., Lu, Z., Jiang, W., Wang, F., Xiaosong, Z. (2022). A novel absorption-based enclosed heat pump dryer with combining liquid desiccant dehumidification and mechanical vapor recompression: Case study and performance evaluation. Case Studies in Thermal Engineering, 35, 102091. https://doi.org/10.1016/j.csite.2022.102091
  11. Fayose, F., Huan, Z. (2016). Heat Pump Drying of Fruits and Vegetables: Principles and Potentials for Sub-Saharan Africa. International Journal of Food Science, 2016, 1–8. https://doi.org/10.1155/2016/9673029
  12. Hu, Z., Li, Y., El-Mesery, H. S., Yin, D., Qin, H., Ge, F. (2022). Design of new heat pump dryer system: A case study in drying characteristics of kelp knots. Case Studies in Thermal Engineering, 32, 101912. https://doi.org/10.1016/j.csite.2022.101912
  13. Koruga, N., Dobrnjac, M., Golubović, D., Dobrnjac, N. (2021). Analysis of the influence of condensation temperature and compressor efficiency on heat pump system efficiency. IOP Conference Series: Materials Science and Engineering, 1208 (1), 012015. https://doi.org/10.1088/1757-899x/1208/1/012015
  14. Teeboonma, U., Tiansuwan, J., Soponronnarit, S. (2003). Optimization of heat pump fruit dryers. Journal of Food Engineering, 59 (4), 369–377. https://doi.org/10.1016/s0260-8774(02)00496-x
  15. White, S. D., Cleland, D. J., Cotter, S. D., Stephenson, R. A., Kallu, R. D. S., Fleming, A. K. (1997). A heat pump for simultaneous refrigeration and water heating. IPENZ Transactions, 24 (1), 36–43. Available at: https://www.researchgate.net/publication/242453802_A_heat_pump_for_simultaneous_refrigeration_andater_heating
  16. Khanzharov, N. S., Abdizhapparova, B. T., Ospanov, B. O., Dosmakanbetova, A. A., Baranenko, A. V., Kumisbekov, S. A., Serikuly, Zh. (2018). Designs of dryers based on combination of vacuum and atmospheric drying of food products. NEWS of National Academy of Sciences of the Republic of Kazakhstan, 431 (5), 141–149. https://doi.org/10.32014/2018.2518-170x.20
  17. Zhuman, Zh. B. (2022). Perspektivy primeneniya teplovyh nasosov dlya sushki myasnyh ruletov iz koniny. Sb. nauch. tr. Mezhd. nauchno-prakt. konf. Perspektivnye napravleniya razvitiya agrarnoy i pischevoy promyshlennosti, 83–87.
  18. Abdizhapparova, B., Potapov, V., Khanzharov, N., Shingissov, A., Khanzharova, B. (2022). Determination of heat transfer mechanisms during vacuum drying of solid-moist and liquid-viscous materials. Eastern-European Journal of Enterprise Technologies, 6 (11 (120)), 6–15. https://doi.org/10.15587/1729-4061.2022.268241
  19. EN 327:2014. Heat exchangers - Forced convection air cooled refrigerant condensers - Test procedures for establishing performance. Available at: https://i2.saiglobal.com/mpc2v/preview/98704138272.pdf?sku=883373_SAIG_NSAI_NSAI_2098366&nsai_sku=i-s-en-327-2014-883373_saig_nsai_nsai_2098366#:~:text=This%20European%20Standard%20applies%20to%20nonducted%20forced%20convection
Designing and testing a heat pump unit for drying, low-temperature processing, and storing of food products

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Published

2024-10-31

How to Cite

Zhuman, Z., Khanzharov, N., & Abdizhapparova, B. (2024). Designing and testing a heat pump unit for drying, low-temperature processing, and storing of food products. Eastern-European Journal of Enterprise Technologies, 5(8 (131), 33–41. https://doi.org/10.15587/1729-4061.2024.313339

Issue

Vol. 5 No. 8 (131) (2024): Energy-saving technologies and equipment

Section

Energy-saving technologies and equipment

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Copyright (c) 2024 Zhanserik Zhuman, Nurlan Khanzharov, Bakhytkul Abdizhapparova

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