Zvýšení přenosu tepla a energeticky optimalizovaná integrace výměníků tepla v chemických provozech zvýší využití odpadního tepla. Podle podmínek zařízení je možné zvýšit energetickou účinnost systému a je možné provádět různé způsoby: přímo znovu použít nízké teplo, přeměnit ho na elektrickou energii nebo vysokou chladicí energii a optimalizovat energetickou integraci systému. Využití nízkopotenciálního tepla je účinným prostředkem pro úsporu energie a snížení skleníkových plynů ve velkých podnicích. 1) Navrhuje se kombinovat metodu kontinuálního spirálového spouštění s tlakovým průtokem s cílem dále zlepšit strukturu výměníku tepla s pláštěm a trubkou, zlepšit komplexní výkon tepelného výměníku a snížit ztráty energie; 2) Na základě rozmanitosti zdroje odpadního tepla, typu cirkulačního média a technických provozních parametrů budou vyvinuty metody a normy pro diferencované kontinuální spirálové přepážky výměníku tepla a vytvoří standardizovaný konstrukční rámec, který položí základ pro praktické využití výzkumu a výsledky vývoje; 3) Pro snížení dopadu na životní prostředí bude provedena optimalizace optimálního systému čištění plynů. 4) Síť výměníků tepla a energetická integrace systému pro chemické lokality budou analyzovány a optimalizace tepelné integrace bude vyvinuta pro maximalizaci ekonomické výkonnosti a minimalizaci emisí.

Description in English
The key scientific issues to be solved in this study are as follows: 1) It is proposed to combine the continuous spiral push-flow enhanced heat transfer method to further improve the structure of the shell-and-tube heat exchanger, improve the comprehensive performance of the heat exchanger and reduce the energy loss. 2) Based on the diversity of waste heat source, circulating medium type and technical operation parameters, concepts, innovative heat exchanger designs and integration procedures will be developed. One such is the continuous spiral baffle heat exchanger design, for which methods and standards will be developed, forming a standardised design framework and laying the foundation for the practical application of research and development results. 3) The heat exchanger network and system energy integration in the chemical system will be analysed, and the thermal integration optimisation method will be further developed to exploit the improve the thermal joint utilisation rate of the production system. As a result, it is planned that the proposed project will deliver simultaneously research results and a heat recovery optimisation software package: (1) Three software modules united in a package (2) Minimum 5 publications in Impact-Factor journals (3) Each of the software modules will be accompanied with documentation, comprehensive tutorial and worked examples for user guidance.

Key words in English
Waste Heat Utilisation, Heat Transfer Enhancement, Process System Optimisation, Process Integration

LTACH19033

Czech

Klemeš Jiří, prof. Ing. Dr. habil., DrSc., dr. h. c. - principal person responsible
Bokhari Syed Awais Ali Shah, Ing., Ph.D. - fellow researcher
Hemzal Milan, Ing. - fellow researcher
Chin Hon Huin, MEng., Ph.D. - fellow researcher
JIA Xuexiu, MSc, Ph.D. - fellow researcher
Varbanov Petar Sabev, prof. Ing. Dr. habil., Ph.D. - fellow researcher
Wang Bohong, BEng, Ph.D. - fellow researcher
Wang Xuechao, MSc, Ph.D. - fellow researcher

Sustainable process integration laboratory
- responsible department (3.12.2018 - not assigned)
Sustainable process integration laboratory
- beneficiary (3.12.2018 - not assigned)

Zhang, L., Klemeš, J.J., Luo, X., Zeng, M., Wang, Q. Effect of porosity on the Performance of PCHE with Embedded PCM/EG under Fluctuating Temperature Conditions. Chemical Engineering Transactions, 2022, no. 94, p. 649-654. ISSN: 2283-9216.
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Li, N., Klemeš, J.J., Sunden, B., Wang, Q., Zeng, M. Heat exchanger network optimisation considering different shell-side flow arrangements. Energy, 2022, no. 261, p. 125081-125081. ISSN: 0360-5442.
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Li, W., Zhang, L., Klemeš, J.J., Wang, Q., Zeng, M. Thermochemical energy conversion behaviour in the corrugated heat storage unit with porous metal support. Energy, 2022, no. 259, p. 124966-124966. ISSN: 0360-5442.
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Li, N., Klemeš, J.J., Sunden, B., Wu, Z., Wang, Q., Zeng, M. Heat exchanger network synthesis considering detailed thermal-hydraulic performance: Methods and perspectives. RENEWABLE & SUSTAINABLE ENERGY REVIEWS, 2022, no. 168, p. 112810-112810. ISSN: 1364-0321.
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Zhang, L., Yang, P., Li, W., Klemeš, J.J., Zeng, M., Wang, Q. A new structure of PCHE with embedded PCM for attenuating temperature fluctuations and its performance analysis. Energy, 2022, no. 254, p. 124462-124462. ISSN: 0360-5442.
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FREISLEBEN, V.; JEGLA, Z.; KRŇÁVEK, M. Analytical approach for energy retrofit of waste gas-to-energy units. Applied Thermal Engineering, 2022, vol. 214, no. 1, p. 118828-1 (118828-14 p.)ISSN: 1359-4311.
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Zhang, L., Klemeš, J.J., Zeng, M., Wang, Q. Dynamic study of the extraction ratio and interstage pressure ratio distribution in typical layouts of SCO2 Brayton cycle under temperature fluctuations. Applied Thermal Engineering, 2022, no. 212, p. 118553-118553. ISSN: 1359-4311.
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Wang, B., Chin, H.H., Jia, X., Zeng, M., Varbanov, P.S., Klemeš, J.J. SPIL-HX: A Software Package for Heat Integration and Equipment Design. The 5th Sustainable Process Integration Laboratory Scientific Conference, Brno, Czech Republic: 2021.
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Zeng, M., Klemeš, J.J., Wang, Q., Varbanov, P.S., Li, N., Wang, B., Guo, Z., Chin, H.H., Hemzal, M. Transmission Enhancement and Energy Optimised Integration of Heat Exchangers in Petrochemical Industry Waste Heat Utilisation (Bilateral Collaborative Project). 24th Conference on Process Integration for Energy Saving and Pollution Reduction (PRES´21) , Brno, Czech Republic: 2021.
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Ding, Y., Klemeš, J.J., Zhao, P., Zeng, M., Wang, Q. Numerical study on 2-stage phase change heat sink for cooling of photovoltaic panel. Energy, 2022, no. 249, p. 123679-123679. ISSN: 0360-5442.
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Zhang, Y., Wang, B., Liang, Y., Yuan, M., Klemeš, J.J. Simultaneously Retrofit of Heat Exchanger Networks and Towers for a Natural Gas Purification Plant. 24th Conference on Process Integration for Energy Saving and Pollution Reduction (PRES´21) , Brno, Czech Republic: 2021.
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Wang, B., Zhang, Y., Zeng, M., Varbanov, P.S., Liang, Y., Klemeš, J.J. A simultaneous optimisation method for plant operating variables and heat exchanger network of a natural gas purification process. TBMCE 2021, Portorož, Slovenia: 2021.
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Chin, H.H., Wang, B., Jia, X., Zeng, M., Freisleben, V., Varbanov, P.S., Klemeš, J.J. Integrated software suite for heat recovery networks and equipment design. Computers and Chemical Engineering, 2022, no. 161, p. 107742-107742. ISSN: 0098-1354.
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Wang, B., Arsenyeva, O., Zeng, M., Klemeš, J.J., Varbanov, P.S. An advanced Grid Diagram for heat exchanger network retrofit with detailed plate heat exchanger design. Energy, 2022, no. 248, p. 123485-123485. ISSN: 0360-5442.
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Li, W., Klemeš, J.J., Wang, Q., Zeng, M. Efficient thermal management strategy of Li-ion battery pack based on sorption heat storage. ENERGY CONVERSION AND MANAGEMENT, 2022, no. 256, p. 115383-115383. ISSN: 0196-8904.
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Wang, B., Varbanov, P.S., Klemeš, J.J. Heat Exchanger Networks Retrofit Considering Fouling. 2021.
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Chin, H.H., Wang, B., Varbanov, P.S., Klemeš, J.J. Long-term investment planning for heat exchanger network retrofit. 2021.
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Wang, B., Varbanov, P.S., Klemeš, J.J. Heat Integration Incorporating Risk Assessment. 2021.
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Zhang, Y., Wang, B., Liang, Y., Yuan, M., Varbanov, P.S., Klemeš, J.J. A method for simultaneous retrofit of heat exchanger networks and tower operations for an existing natural gas purification process. e-Prime - Advances in Electrical Engineering, Electronics and Energy, 2021, no. 1, p. 100019-100019. ISSN: 2772-6711.
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FREISLEBEN, V.; JEGLA, Z.; KRŇÁVEK, M. Improved Analytical Approach for Fuel Demand Re-Evaluation in Liquid and Gaseous Waste Thermal Processing Units. 2021. p. 1-18.
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Responsibility: Klemeš Jiří, prof. Ing. Dr. habil., DrSc., dr. h. c.