Prospects for Creating a New Generation of Ice banks for Systems with Uneven Heat Loads

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Abstract

BACKGROUND: The rational application of thermal energy storages with phase transition for objects of the food industry with significantly uneven heat loads is discussed in this article. The drawbacks of existing ice banks, suppressing their spread, are analyzed. Possible methods of addressing these problems during the designing process are considered.

AIM: Development of a new generation of ice banks with a high intensity of ice melting processes and the ability to adjust the heat load.

MATERIALS AND METHODS: The brand-new discharge method based on the film flow around ice surfaces is proposed. The proposed approach allows us to optimize the heat load and provide the maintenance of the required ice water temperature. The laboratory sample of the coaxial film heat exchanger (FHE) was designed by the authors.

RESULTS: Experimental results in the operating range of the levels of supplied water temperatures 20 ℃, 40 ℃, and 60 ℃ and mass flow rates 15, 30, 45, and 60 kg/min are carried out. The experimental results confirmed that the development construction of the FHE with the film mechanism of the heat transfer provides increasing efficiency in orders of magnitude in comparison with ice banks with bulk melting. The reduced heat load with a mass flow rate of 60 kg/min and medium temperature on 60 ℃ was 220–240 kW/m2, and the maximal reduced heat load of the upper layer of coil reached 1300 kW/m2. The generalization of the results showed the application prospects of film ice banks in the refrigeration systems of various industrial and agricultural objects.

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About the authors

Galina Y. Goncharova

Bauman Moscow State Technical University; All-Russian Scientific Research Institute of Refrigeration Industry – branch of V.M. Gorbatov Federal Research Center for Food Systems of Russian Academy of Science

Author for correspondence.
Email: galinagoncharova@mail.ru
ORCID iD: 0000-0003-4270-819X
SPIN-code: 1528-9005

Dr. Sci. (Tech), professor

Russian Federation, Moscow; Moscow

Victor P. Pytchenko

All-Russian Scientific Research Institute of Refrigeration Industry – branch of V.M. Gorbatov Federal Research Center for Food Systems of Russian Academy of Science

Email: hladosnab@mail.ru
ORCID iD: 0000-0002-5822-036X
SPIN-code: 8092-8190

Leading Engineer

Russian Federation, Moscow

Sergey S. Borzov

All-Russian Scientific Research Institute of Refrigeration Industry – branch of V.M. Gorbatov Federal Research Center for Food Systems of Russian Academy of Science

Email: donsb@bk.ru
ORCID iD: 0000-0003-4431-1815
SPIN-code: 9609-6436

Junior Researcher

Russian Federation, Moscow

Georgiy V. Borshchev

All-Russian Scientific Research Institute of Refrigeration Industry – branch of V.M. Gorbatov Federal Research Center for Food Systems of Russian Academy of Science

Email: razorleaf.619@gmail.com
ORCID iD: 0000-0002-8878-1571
SPIN-code: 4794-7359

Junior Researcher

Russian Federation, Moscow

References

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  2. Pilipenko AYu, Forsyuk AV, Zasyadko YI. Experimental and theoretical investigation of ice formation on vertical tube. Refrigeration technology. 2014;6:42-47. (in Russ).
  3. Semenchuk SM. Myths about equipment for ice water. Refrigeration technology. 2009;7:16–18. (in Russ).
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  5. Chumak IG, Chepurnenko VP, Chuklin SG. Refrigeration units. Moscow: Agropromizdat; 1981. (in Russ).
  6. Stefanovskiy VM. Features of ice melting in free convection process. In: Scientific support of refrigeration industry: Collection of scientific papers related to 75 years of VNIKHI. Moscow: Graph service; 2005. P:240–246. (in Russ).
  7. Chernobylskiy II, Bondar AG, Gaevskiy BA, et al. Machines and apparatuses of chemical manufactures. Moscow: Mechanical engineering; 1974. (in Russ).
  8. Kramer NG, Korobov AV, Ivanova RB, et al. Recommendations for the design of thermal energy storages. Refrigeration technology. 1981;1:47–51. (in Russ).
  9. Kalyunov VS, Tushev KA. Refrigeration systems with ice banks: realization of three necessarily conditions. Refrigeration technology. 2007;8:14–19. (in Russ).
  10. Vorontsov EG, Tananaiko YuM. Heat transfer in liquid films. Kiev: Tekhnika; 1972. (in Russ).
  11. Semilet ZV. Irrigation heat exchangers for chemical production. Kiev: Mashgiz; 1961. (in Russ).
  12. Goncharova GYu, Pytchenko VP, Borzov SS, Borschev GV. Investigation of heat and mass transfer processes during film flow around ice surfaces with phase transition at the interface. Journal of the international academy of refrigeration. 2021;4:3–11. (in Russ). doi: 10.17586/1606-4313-2021-20-4-3-11
  13. Goncharova GYu, Pytchenko VP, Borzov SS, Borschev GV. Investigation of heat and mass transfer processes during film flow around ice surfaces with phase transition at the interface. In: Collection of scientific works of III international scientific conference SEWAN – 2021. SPb. 2021. P:299–300. (in Russ).

Supplementary files

Supplementary Files
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1. Fig. 1. Evaporative sections of tubular and pillow plate ice banks.

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2. Fig. 2. Plots of α and K in ice banks. a) Heat transfer coefficient α betwen water and melting ice under different values of specific mass flow rate 1 - According to VNIKHI data [8]; 2 - Kalyunov V.S., Tushev K.A. [9]. b) Reduction of the overall heat transfer coefficient by incresing the thickness of generating ice in tubular and pillow plate ice banks.

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3. Fig. 3. Film heat exchanger a – scheme; b – front view; 1 – nozzle, 2 – refrigerant distributor, 3 – coils, 4 – temperature sensors, 5 – drain.

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4. Fig. 4. The plot of temperature function of time in the FHE for mode: Tin = 40 ℃ , G = 45 kg/min.

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5. Fig. 5. Plot of the heat load change on time for the entire apparatus and each layer of coils (1,2,3...10 – number of coil layer) for mode: Tin = 40 ℃, G = 45 kg/min.

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6. Fig. 6. Plot of the maximum heat load as a function of the inlet temperature of water.

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7. Fig. 7. Dependency of the specific heat load of the coil layer and apparatus as a function of Δt between ice and temperature of the inlet water.

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