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Project results

The Results of Our Passion

Scientific publications


Pawel Ocloń

Renewable Energy Utilization Using Underground Energy Systems,

Lecture Notes in Energy, Vol. 84,
Springer International Publishing, ISBN 978-3-030-75227-9, 2021, 173 pages.

This book discusses the challenge of underground energy storage in a comprehensive manner. It covers a wide range of important and practical topics including the modeling and optimization of underground power cable systems, modeling of thermal energy storage systems utilizing waste heat from PV panels cooling. 

Research Articles

1. Bartyzel, F., Wegiel, T., Kozień-Woźniak, M., Czamara, M., 2022, Numerical Simulation of Operating Parameters of the Ground Source Heat Pump. Energies, 15, 383. DOI: 10.3390 / en15010383 [IF = 3.252]

A new tool for simulating the heat pump operating parameters and costs of the implemented solutions is developed. The root mean square deviation shows a promising results of 8%. Further research will include the effect of heat pump operation on the ground temperature, and the potential to regenerate it using waste heat from PV-T panels. The biggest challenge will be to integrate the two simulations, ground and heat pump, into a single solution to account for the mutual influence (feedback loop) on the annual ground temperature profile and its effect on system efficiency.

2. Zhang, S., Ocłoń, P., Klemeš, JJ, Michorczyk, P., Pielichowska, K., Pielichowski, K., 2022, Renewable energy system for building heating, cooling and electricity production with thermal energy storage, Renewable and Sustainable Energy Reviews, 165, 112560. [IF = 16.799]

This paper introduces the recent developments in Renewable Energy Systems for building heating, cooling and electricity production with thermal energy storage. The recently developing electrical energy and chemical storage are Battery Energy Storage Systems and Hydrogen Energy Systems, through it is urgently necessary to overcome the difficulties of high cost, relatively low efficiency and demanding storage environment and so on. For the thermal energy storage, Phase Change Materials (PCMs) show great potential for application

3. Yap, KY, Chin, HH, Klemeš, JJ, 2022.  Future outlook on 6G technology for renewable energy sources (RES). Renewable and Sustainable Energy Reviews, 167, 112722. [IF = 16.799]

As the renewable energy sources (RES) continues to grow in power system due to emissions decarbonisation and sustainability policies, a fast and reliable connection between RES components and equipment is crucial to ensure quality power delivery. This review provides a detailed insight into the full potential in 6G for the acceleration of RES with the faster and stable data bandwidth.

4. Selikhov, Y., Klemeš, J.J., Kapustenko, P., 2022, Arsenyeva, O., The study of flat plate solar collector with absorbing elements from a polymer material, Energy, 256, 12477. [IF = 8.857]

The application of polymeric materials for the manufacture of absorbing elements of solar collectors allows efficient transformation of solar radiation into thermal energy with low material consumption and reduced cost of solar installations. This paper investigated the solar collector of flat plate type.

5.Varbanov P.S., Chin H.H., Klemeš J.J., Ocłoń P., Zhang S., 2022.Potential of Solar Powered Underground Waste Heat Utilisation in Total Site Heat Integration, IEEE, Accepted.

6. Jamaluddin, K., Wan, Alwi, S.R., Manan, Z.A., Hamzah, K., Klemeš, J.J., Zailan, R., 2022. Optimal nuclear trigeneration system considering life cycle costing, Journal of Cleaner Production, 10.1016/j.jclepro.2022.133399. [IF=11.072]

Trigeneration System Cascade Analysis is a methodology based on Pinch Analysis to optimise a centralised trigeneration system in various energy ratings in demands. However, the previous study does not consider a complete life cycle costing in the Trigeneration System Cascade Analysis. The methodology consists of three main parts, which are data extraction, development of Trigeneration System Cascade Analysis, and calculations of the life cycle costing. In this analysis, a centralised Pressurised Water Reactor, which is the most commonly used nuclear reactor in the world, is applied in a trigeneration mode in three different industrial plants.

7. Wang, C., Zheng, J., Liang, Y., Wang, B., Klemeš, J.J., Zhu, Z., Liao, Q., 2022. Deeppipe: An intelligent monitoring framework for operating condition of multi-product pipelines. Energy,10.1016/ [IF=8.857]

The operation monitoring of multi-product pipelines helps to grasp the operation dynamics, detect abnormal situations in time, and assist on-site operation management. However, due to the complexity of the scheduling plan, the operating conditions of pipelines change frequently, which makes it difficult to accurately recognise condition types. To solve the above problem, an intelligent monitoring framework for operating conditions is proposed to simultaneously achieve the system recognition of steady, unsteady, and abnormal conditions.

8. Fan, Y.V., Jiang, P., Klemeš, J. J., & Ocłoń, P. (2022). Minimum environmental footprint charging of electric vehicles: a spatiotemporal scenario analysis. Energy Conversion and Management, 258, 115532. [IF=11.533]

Electrification of mobility can be an effective solution to reduce the environmental burden of the transportation sector. Previous research has frequently used theoretical assumptions and has not always adequately analysed spatiotemporal heterogeneity (charging location and timing) of the power generation in electric vehicle charging events. The environmental sustainability of electric vehicles has still considerable room for further improvement. This study aims to identify the time series greenhouse gas emission pattern of power generation and assess the potential emission reduction by altering the charging behaviour. It is targeted on how to further minimising the environmental footprint of renewable energy system, including the solar energy by focusing on the user stage.

9. Yildirim, M.A., Bartyzel, F., Vallati, A.,  Woźniak, M.K., Ocłoń, P., 2023. Efficient energy storage in residential buildings integrated with RESHeat system Applied Energy, 10.1016/j.apenergy.2023.120752. [IF=11.446]

The paper presents an energy analysis for a residential building that is a RESHeat system demo site, along with integrating the RESHeat system with the building. The experimentally validated components coupled with the building model to achieve the system performance in TRNSYS software. The results show that the yearly average COP of the heat pump is 4.85 due to the underground energy storage unit. The RESHeat system is able to fully cover the heating demand of the building using renewable energy sources and an efficient underground energy storage system.

10. Vallati, A., Fiorini, C. V., Oclon, P., Grignaffini, S., & Di Matteo, M. (2022, December). Comparison of different heating generator systems to reduce energy consumption in social housing in a Mediterranean climate. In Journal of Physics: Conference Series (Vol. 2385, No. 1, p. 012019). IOP Publishing.

 The main goal of the present work was to evaluate through dynamic analysis different Heating, Ventilation, and Air Conditioning scenarios, to assess the optimal configuration of the system for residential use. The results show that a hybrid system can lower the primary energy consumption up to 28%, thus allowing the employment of renewable energies within the social housing building stock.

11. Vallati, A., Fiorini, C. V., Grignaffini, S., Oclon, P., Di Matteo, M., & Kobylarczyk, J. (2023). Energy Retrofit Optimization for social Building in temperate climate zone. Energy and Buildings, 112771. [IF=7.201]

Public funding is significantly reduced compared to the past and the conditions of the buildings are deteriorating over time, resulting in an increase in energy consumption for air conditioning and in indoor comfort conditions very far from the standards. Often it is also very difficult to act on the passive system, with the insertion of a thermal insulation, as well as inside the apartments, with the replacement of terminal units. For this reason a good way is to evaluate the possibility of modifying the thermal energy generation system, preserving as much as possible the distribution and supply system inside the apartments. In general, where the boiler is not obsolescent, the idea is to propose a hybrid generation system with the inclusion of a heat pump (HHP), which could be implemented with renewable energy equipment, properly installed in the building. The results show that a hybrid system can lower the primary energy consumption up to 28%, thus allowing the employment of renewable energies within the social housing building stock.

12. Jakubek, D., Ocłoń, P., Nowak-Ocłoń, M., Sułowicz, M., Varbanov, P. S., & Klemeš, J. J. (2023). Mathematical modelling and model validation of the heat losses in district heating networks. Energy, 267, 126460. [IF=8.857]

This paper presents an analysis of the heat losses from pre-insulated pipes and twin pipes in the heating system network. This study compares the heat losses in the ground calculated by analytical solution (1D model) with the measurements on the dedicated experimental setup. The calculations have been made for several heating network pipe variants: twin pipes: DN40, DN50, DN65, and their counterparts in a single parallel pre-insulated system. The developed and validated mathematical model of the heating network is used to calculate the heat losses in a heating network connecting an underground storage tank with a ground source heat pump. The economic analysis shows that after 5 y, a return on investment is expected when comparing twin-pipe systems and single-pipe pre-insulated heating networks.