UTILIZATION OF WASTE HEAT FROM TECHNOLOGICAL EQUIPMENT TO IMPROVE THE ENERGY EFFICIENCY OF VENTILATION SYSTEMS
DOI:
https://doi.org/10.31548/energiya3(79).2025.098Abstract
The article analyzes various possibilities for utilizing waste heat removed from installed equipment at industrial enterprises. A comparison of different types of systems is presented, highlighting their advantages and disadvantages. Calculations using the h–d diagram were carried out for different outdoor air temperatures for three system configurations: a straight-through system (without heat recovery), a system with air recirculation, and a system with a two-level mixing chamber. The advantages of using an adaptive system with a two-level mixing chamber compared to the traditional air recirculation scheme are demonstrated. It is shown that, under certain operating modes, the adaptive system can reduce operational costs by more than 10 times. Technical barriers to the implementation of an adaptive system with a two-level mixing chamber are also discussed.
Key words: energy efficiency; adaptive system; air recirculation; heat recovery
References
1. Clairand, J.-M. et al. (2020). Review of Energy Efficiency Technologies in the Food Industry: Trends, Barriers, and Opportunities. Energy Reports.
2. Hadžiahmetović, Z. et al. (2021). Solution Proposal for Utilization of the Waste Heat in Refrigeration Systems. TEM Journal, 10(1), 177–182.
3. Lundberg, M., Christenson, M. Waste Heat Recovery in the Food and Drink Industry. Carbon Trust Case Study (UK Heinz factory).
4. Goodfellow, H.D., Kosonen, R. (2020). Industrial Ventilation Design Guidebook: Updated Edition. Academic Press.
5. Li, Y. et al. (2024). Energy Saving Technologies and Practices in Facility Agriculture in Cold Regions. Agronomy, 15(1), 204.
6. Luo, X. et al. A (2023). Framework for Recovering Waste Heat Energy from Food Processing Effluent. Water, 15(1), 12.
7. Kong, D. et al. (2024). A parametric, control-integrated and machine learning-enhanced modeling method of demand-side HVAC systems in industrial buildings. Applied Energy, 379.
8. Vasile, V. et al. (2024). The Effects of an Adaptive Ventilation Control System on Indoor Air Quality and Energy Consumption. Sustainability, Vol. 16(22), 9836.
9. DSTU 9190:2022. Ventyliatsiia ta kondytsionuvannia povitria. Normy proiektuvannia [Ventilation and Air Conditioning]. Design Standards. Kyiv, 2022.
10. ANSI/ASHRAE Standard 62.1-2019. Ventilation for Acceptable Indoor Air Quality. ASHRAE, 2019.
11. Aljashaami, B.A. et al. (2024). Recent improvements to heating, ventilation, and cooling technologies based on renewable energy to achieve zero-energy buildings. Results in Engineering, 21.
12. Adam, M. et al. (2024). Experimental measurements and analysis of parameters that influence the consumption of electrical energy in HVAC systems. Romanian Journal of Civil Engineering.
13. Gourlis, G., Kovacicm I. (2016). A study on building performance analysis for energy retrofit of existing industrial facilities. Applied Energy.
14. Kim, J. et al. (2024). Development and validation of an air recirculated ventilation system, Part 2: Evaluation of pig productivity. Biosystems Engineering.
15. International Energy Agency (IEA). Energy Efficiency 2024. Paris: IEA.
16. IRENA, OECD/IEA, REN21. (2020). Renewable Energy Policies in a Time of Transition: Heating and Cooling.
17. Goodfellow, H.D., Tahti, E. (2001). Industrial Ventilation Design Guidebook. Academic Press.
Published
Issue
Section
License
Relationship between right holders and users shall be governed by the terms of the license Creative Commons Attribution – non-commercial – Distribution On Same Conditions 4.0 international (CC BY-NC-SA 4.0):https://creativecommons.org/licenses/by-nc-sa/4.0/deed.uk
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
