Navid Khordehgah

Brunel University of London

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Hussam Jouhara

Brunel University of London

AŻ

Alina Żabnieńśka-Góra

Brunel University of London

Lujean Ahmad

Brunel University of London

Stephen P. Lester

Ricardo (United Kingdom)

Sulaiman Almahmoud

Brunel University of London

Valentin Guichet

Brunel University of London

Bertrand Delpech

Brunel University of London

Amisha Chauhan

Brunel University of London

Nicolas Serey

Fraunhofer Institute for Material and Beam Technology

Qusay Doraghi

Brunel University of London

Cooperative Institutions

Brunel University of London

Centre for Sustainable Energy

Instituto de Tecnología Cerámica

Universitat Jaume I

Vytautas Magnus University

Vantage Power (United Kingdom)

University of Manchester

University of Leeds

Spirax Sarco (United Kingdom)

Universitat Politècnica de Catalunya

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Investigation, development and experimental analyses of a heat pipe based battery thermal management system

International Journal of Thermofluids (2019)

Hussam Jouhara Nicolas Serey Navid Khordehgah Robert Bennett Sulaiman Almahmoud

In this paper, the performance of a heat pipe based thermal management technique for batteries has been investigated experimentally. In this regard, a test rig was developed and used to demonstrate the effectiveness of flat heat pipe (heat mat) technology at controlling and maintaining the temperature of a prototype battery module, which consisted of sixteen prismatic lithium-titanate (LTO) cells. Test results were obtained which proved the ability of the technology to keep the battery cells at an optimal temperature, during cycling representative of real-world operation, from either a cold or hot start. The heat mat was shown to efficiently absorb the heat generated by the cells and transfer it effectively to an external cooling medium of either water or refrigerant. In conclusion, it was demonstrated that the maximum cell temperature is significantly reduced and the overall temperature uniformity of the module is greatly improved, when compared to a module with no thermal management. The maximum cell temperature was kept below 28 °C and the module temperature uniformity was maintained at +/−1 °C. By using test cycles that generated a quasi-steady-state heat load from the cells, it was shown that approximately 60% of the heat generated by the cells was removed by the heat mat. The results obtained from this work demonstrate that heat mat technology can improve battery performance and longevity by reducing the degradation and ageing process and cell imbalances, that result from high cell temperatures and module/pack-level temperature non-uniformity.

Battery pack

Computer cooling

10.1016/j.ijft.2019.100004

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Citations (106)

Annual performance analysis of the PV/T system for the heat demand of a low-energy single-family building

Renewable Energy (2020)

Alina Żabnieńśka-Góra Navid Khordehgah Hussam Jouhara

TRNSYS

Building envelope

Single family

Heating system

Cooling load

10.1016/j.renene.2020.10.123

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Citations (32)

The utilisation of useful ambient energy in residential dwellings to improve thermal comfort and reduce energy consumption

International Journal of Thermofluids (2020)

Magdi Rashad Navid Khordehgah Alina Żabnieńśka-Góra Lujean Ahmad Hussam Jouhara

Energy consumption in the housing sector, is significantly high and continues to escalate. Urbanisation due to population growth and migration from rural areas to cities are two main reasons for this rising demand. With the uncertainty in the energy market and the increasing awareness of the impact of fossil fuels on the environment, research work in efficient building design has gained momentum. Energy conservation guidelines in many countries have become mandatory. Howerver, more emphasis has been given to commercial, institutional, governmental and industrial buildings, which commonly employ more efficient HVAC systems than those deployed in houses. Thus, the push towards energy conservation in the residential sector is less noticeable. This is further compounded with the absence of will power to enforce the same energy conservation rules as the case with other sectors. In this paper five passive cooling and heating strategies have been reviewed (passive building design, night ventilation, nocturnal cooling, PCM (Phase Change Material) and IEC (Indirect Evaporative Cooling), solar thermal energy). The aim is to evaluate how to implement them better in a cost-effective way in existing and new houses. The literature review confirmed the need for further investigation of energy efficient HVAC systems with passives strategies solutions for contemporary residential dwellings is required to make a meaningful impact on the energy map of this sector. Also, the viability of an easy to deploy and configure HVAC system for retrofit and new applications for more benefits of these passive strategies either individually or in a hybrid configuration needs to be explored.

Consumption

10.1016/j.ijft.2020.100059

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Citations (40)

Waste heat recovery technologies and applications

Thermal Science and Engineering Progress (2018)

Hussam Jouhara Navid Khordehgah Sulaiman Almahmoud Bertrand Delpech Amisha Chauhan

Industrial waste heat is the energy that is generated in industrial processes which is not put into any practical use and is lost, wasted and dumped into the environment. Recovering the waste heat can be conducted through various waste heat recovery technologies to provide valuable energy sources and reduce the overall energy consumption. In this paper, a comprehensive review is made of waste heat recovery methodologies and state of the art technologies used for industrial processes. By considering the heat recovery opportunities for energy optimisation in the steel and iron, food, and ceramic industries, a revision of the current practices and procedures is assessed. The research is conducted on the operation and performance of the commonly used technologies such as recuperators, regenerators, including furnace regenerators and rotary regenerators or heat wheels, passive air preheaters, regenerative and recuperative burners, plate heat exchangers and economisers and units such as waste heat boilers and run around coil (RAC). Techniques are considered such as direct contact condensation recovery, indirect contact condensation recovery, transport membrane condensation and the use of units such as heat pumps, heat recovery steam generators (HRSGs), heat pipe systems, Organic Rankine cycles, including the Kalina cycle, that recover and exchange waste heat with potential energy content. Furthermore, the uses of new emerging technologies for direct heat to power conversion such as thermoelectric, piezoelectric, thermionic, and thermo photo voltaic (TPV) power generation techniques are also explored and reviewed. In this regard, the functionality of all technologies and usage of each technique with respect to their advantages and disadvantages is evaluated and described.

Organic Rankine Cycle

Energy Recovery

Recuperator

10.1016/j.tsep.2018.04.017

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Citations (875)

Applications and thermal management of rechargeable batteries for industrial applications

Energy (2019)

Hussam Jouhara Navid Khordehgah Nicolas Serey Sulaiman Almahmoud Stephen P. Lester

10.1016/j.energy.2018.12.218

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Citations (110)

Computational study and experimental validation of a solar photovoltaics and thermal technology

Renewable Energy (2019)

Navid Khordehgah Valentin Guichet Stephen P. Lester Hussam Jouhara

TRNSYS

Solar thermal collector

Transient (computer programming)

10.1016/j.renene.2019.05.108

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Citations (43)

Latent thermal energy storage technologies and applications: A review

International Journal of Thermofluids (2020)

Hussam Jouhara Alina Żabnieńśka-Góra Navid Khordehgah Darem Ahmad Tom Lipinski

The achievement of European climate energy objectives which are contained in the European Union's (EU) "20–20–20″ targets and in the European Commission's (EC) Energy Roadmap 2050 is possible, among other things, through the use of energy storage technologies. The use of thermal energy storage (TES) in the energy system allows to conserving energy, increase the overall efficiency of the systems by eliminating differences between supply and demand for energy. The article presents different methods of thermal energy storage including sensible heat storage, latent heat storage and thermochemical energy storage, focusing mainly on phase change materials (PCMs) as a form of suitable solution for energy utilisation to fill the gap between demand and supply to improve the energy efficiency of a system. PCMs allow the storage of latent thermal energy during phase change at almost stable temperature. The article presents a classification of PCMs according to their chemical nature as organic, inorganic and eutectic and by the phase transition with their advantages and disadvantages. In addition, different methods of improving the effectiveness of the PCM materials such as employing cascaded latent heat thermal energy storage system, encapsulation of PCMs and shape-stabilisation are presented in the paper. Furthermore, the use of PCM materials in buildings, power generation, food industry and automotive applications are presented and the modelling tools for analysing the functionality of PCMs materials are compared and classified.

Phase-change material

Thermal energy

10.1016/j.ijft.2020.100039

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Citations (397)

Energy Performance Analysis of a PV/T System Coupled with Domestic Hot Water System

ChemEngineering (2020)

Navid Khordehgah Alina Żabnieńśka-Góra Hussam Jouhara

In this paper, a standalone photovoltaics-thermal solar panel is modelled using the TRNSYS simulation engine. Based on this, it was explored how such a system can be comprised of thermal and electrical storage components to provide electricity and hot water for a dwelling in a warm location in Europe. Furthermore, it was investigated how, by cooling the temperature of the solar cells, the electrical power output and efficiency of the panel was improved. The performance of the system was also studied, and the amount that the solar panel was able to convert the solar energy into electricity was investigated. Through this, we discovered that when the temperature of the panel was reduced, on average, by 20%, the electrical power output increased by nearly 12%. Moreover, it was demonstrated that the modelled system can provide hot water under different solar radiation conditions and during all seasons of the year.

TRNSYS

10.3390/chemengineering4020022

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Citations (33)

Advances in Applications of Solar Photovoltaics and Thermal Technologies Energy

L O Ahmad Navid Khordehgah Jurgita Malinauskaitė Hussam Jouhara

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Analytical modelling of a photovoltaics-thermal technology combined with thermal and electrical storage systems

Renewable Energy (2020)

Navid Khordehgah Alina Żabnieńśka-Góra Hussam Jouhara