All Outputs (51)

Techno-economic evaluation of multiple energy piles for a ground-coupled heat pump system (2018)
Journal Article
Cui, Y., Zhu, J., & Meng, F. (2018). Techno-economic evaluation of multiple energy piles for a ground-coupled heat pump system. Energy Conversion and Management, 178, 200-216. https://doi.org/10.1016/j.enconman.2018.10.042

A technical and economic feasibility study of multiple energy piles (EPs) for a ground-coupled heat pump (GCHP) system is presented in this paper. The GCHP system energy performance and life-cycle cost (LCC) are evaluated, it is found that the system... Read More about Techno-economic evaluation of multiple energy piles for a ground-coupled heat pump system.

A comprehensive review on 2D and 3D models of vertical ground heat exchangers (2018)
Journal Article
Cui, Y., Zhu, J., Twaha, S., & Riffat, S. (2018). A comprehensive review on 2D and 3D models of vertical ground heat exchangers. Renewable and Sustainable Energy Reviews, 94, https://doi.org/10.1016/j.rser.2018.05.063

The ground source heat pumps (GSHPs) have been extensively applied to commercial and residential buildings owing to their high-energy efficiencies and low running costs. The key component of the GSHP is a ground heat exchanger (GHE). The state-of-the... Read More about A comprehensive review on 2D and 3D models of vertical ground heat exchangers.

A zeolite 13X/magnesium sulfate–water sorption thermal energy storage device for domestic heating (2018)
Journal Article
Xu, S., Lemington, Q., Wang, R., & Zhu, J. (2018). A zeolite 13X/magnesium sulfate–water sorption thermal energy storage device for domestic heating. Energy Conversion and Management, 171, https://doi.org/10.1016/j.enconman.2018.05.077

A sorption thermal energy storage (TES) device for domestic heating is presented in this article. The TES device adopts the new design scenario with valve-less adsorber and separate reservoir to eliminate the large-diameter vacuum valve for vapor flo... Read More about A zeolite 13X/magnesium sulfate–water sorption thermal energy storage device for domestic heating.

Performance evaluation of a membrane-based flat-plate heat and mass exchanger used for liquid desiccant regeneration (2018)
Journal Article
Bai, H., Zhu, J., Chen, Z., Chu, J., & Liu, Y. (2018). Performance evaluation of a membrane-based flat-plate heat and mass exchanger used for liquid desiccant regeneration. Applied Thermal Engineering, 139, https://doi.org/10.1016/j.applthermaleng.2018.05.011

Liquid desiccant dehumidification system has gained much progress recently for its considerable energy saving potential without liquid water condensation. Within the system, regeneration is of great importance since diluted desiccant solution after d... Read More about Performance evaluation of a membrane-based flat-plate heat and mass exchanger used for liquid desiccant regeneration.

State-of-art in modelling methods of membrane-based liquid desiccant heat and mass exchanger: a comprehensive review (2018)
Journal Article
Bai, H., Zhu, J., Chen, Z., & Chu, J. (2018). State-of-art in modelling methods of membrane-based liquid desiccant heat and mass exchanger: a comprehensive review. International Journal of Heat and Mass Transfer, 125, https://doi.org/10.1016/j.ijheatmasstransfer.2018.04.100

Air dehumidification is of vital importance in building air conditioning and production safety. Semi-permeable membrane module is a novel heat and mass exchanger, which separates the air and liquid desiccant to overcome desiccant droplet carry-over p... Read More about State-of-art in modelling methods of membrane-based liquid desiccant heat and mass exchanger: a comprehensive review.

CFD assessment of multiple energy piles for ground source heat pump in heating mode (2018)
Journal Article
Cui, Y., & Zhu, J. (2018). CFD assessment of multiple energy piles for ground source heat pump in heating mode. Applied Thermal Engineering, 139, https://doi.org/10.1016/j.applthermaleng.2018.04.073

Three-dimensional (3D) computational fluid dynamics (CFD) model of ground source heat pump (GSHP) with multiple energy piles (EPs) is developed to investigate the system heating performances under continuous and intermittent operating conditions, the... Read More about CFD assessment of multiple energy piles for ground source heat pump in heating mode.

Natural convection heat transfer of a straight-fin heat sink (2018)
Journal Article
Meng, X., Zhu, J., Wei, X., & Yan, Y. (2018). Natural convection heat transfer of a straight-fin heat sink. International Journal of Heat and Mass Transfer, 123, https://doi.org/10.1016/j.ijheatmasstransfer.2018.03.002

The influence of mounting angle on heat dissipation performance of a heat sink under natural convection condition is investigated in this paper by numerical simulation and experimental test. It is found that the heat sink achieves the highest cooling... Read More about Natural convection heat transfer of a straight-fin heat sink.

Optical design of compact linear Fresnel reflector systems (2017)
Journal Article
Zhu, J., & Chen, Z. (in press). Optical design of compact linear Fresnel reflector systems. Solar Energy Materials and Solar Cells, 176, https://doi.org/10.1016/j.solmat.2017.12.016

Compact linear Fresnel reflector (CLFR) system employing multiple receivers is promising with better optical performance and cost effectiveness compared to linear Fresnel reflector (LFR) system, especially for applications with limited ground availab... Read More about Optical design of compact linear Fresnel reflector systems.

Maximum power Point Tracking control of thermoelectric generation system using extremum seeking control method (2017)
Journal Article
Twaha, S., Zhu, J., Maraaba, L., Huang, K., Li, B., & Yan, Y. (2017). Maximum power Point Tracking control of thermoelectric generation system using extremum seeking control method. Energies, 10, https://doi.org/10.3390/en10122016

This study proposes and implements maximum power Point Tracking (MPPT) control on thermoelectric generation system using extremum seeking control (ESC) algorithm. The MPPT is applied to guarantee maximum power extraction from the TEG system. The work... Read More about Maximum power Point Tracking control of thermoelectric generation system using extremum seeking control method.

Parametric analysis of a cross-flow membrane-based parallel-plate liquid desiccant dehumidification system: numerical and experimental data (2017)
Journal Article
Bai, H., Zhu, J., Chen, Z., & Chu, J. (2018). Parametric analysis of a cross-flow membrane-based parallel-plate liquid desiccant dehumidification system: numerical and experimental data. Energy and Buildings, 158, https://doi.org/10.1016/j.enbuild.2017.10.018

Operating parameters of a membrane-based parallel-plate liquid desiccant dehumidification system are investigated in this paper. The liquid desiccant and air are in a cross-flow arrangement, and separated by semi-permeable membranes to avoid carry-ov... Read More about Parametric analysis of a cross-flow membrane-based parallel-plate liquid desiccant dehumidification system: numerical and experimental data.

Year-round performance assessment of a ground source heat pump with multiple energy piles (2017)
Journal Article
Cui, Y., & Zhu, J. (2018). Year-round performance assessment of a ground source heat pump with multiple energy piles. Energy and Buildings, 158, https://doi.org/10.1016/j.enbuild.2017.10.033

The year-round performance of a ground source heat pump (GSHP) with multiple energy piles (EPs) is investigated in this study based on a 3D transient heat transfer model. The GSHP heating and cooling capabilities are simulated and assessed according... Read More about Year-round performance assessment of a ground source heat pump with multiple energy piles.

Experimental investigation on a dual-mode thermochemical sorption energy storage system (2017)
Journal Article
Li, T., Wu, S., Yan, T., Wang, R., & Zhu, J. (2017). Experimental investigation on a dual-mode thermochemical sorption energy storage system. Energy, 140(1), 383-394. https://doi.org/10.1016/j.energy.2017.08.073

A dual-mode seasonal solar thermochemical sorption energy storage system using working pair of expanded graphite/SrCl2-NH3 was constructed and investigated. Solar thermal energy is transformed into chemical bonds in summer, and the stored energy is r... Read More about Experimental investigation on a dual-mode thermochemical sorption energy storage system.

Parameter analysis of thermoelectric generator/dc-dc converter system with maximum power point tracking (2017)
Journal Article
Twaha, S., Zhu, J., Li, B., Yan, Y., & Huang, K. (2017). Parameter analysis of thermoelectric generator/dc-dc converter system with maximum power point tracking. Energy for Sustainable Development, 41, https://doi.org/10.1016/j.esd.2017.08.005

The power generated from TEG is relatively unstable owing to temperature variations at its hot and cold side terminals. The dc-dc converters can provide more stable power output thereby improving the overall efficiency of TEG system. However, to faci... Read More about Parameter analysis of thermoelectric generator/dc-dc converter system with maximum power point tracking.

Heat transfer enhancement of a modularised thermoelectric power generator for passenger vehicles (2017)
Journal Article
Li, B., Huang, K., Yan, Y., Li, Y., Twaha, S., & Zhu, J. (2017). Heat transfer enhancement of a modularised thermoelectric power generator for passenger vehicles. Applied Energy, 205, https://doi.org/10.1016/j.apenergy.2017.08.092

Transport represents over a quarter of Europe's greenhouse gas emissions and is the leading cause of air pollution in cities. It has not seen the same gradual decline in emissions as other sectors. Recently, the thermoelectric power generation (TEG)... Read More about Heat transfer enhancement of a modularised thermoelectric power generator for passenger vehicles.

Performance comparison of thermoelectric generators with Extremum seeking control and incremental conductance MPPT methods (2017)
Presentation / Conference Contribution
Twaha, S., Zhu, J., & Yan, Y. (2017). Performance comparison of thermoelectric generators with Extremum seeking control and incremental conductance MPPT methods.

Thermoelectric generators (TEGs) are used for converting heat into electricity, environmentally friendly, without moving parts and with less complexity. One of the problems with TEG is that it has low efficiency and therefore it is necessary to harve... Read More about Performance comparison of thermoelectric generators with Extremum seeking control and incremental conductance MPPT methods.

Numerical investigation of flow unsteadiness and heat transfer on suction surface of rotating airfoils within a gas turbine cascade (2017)
Journal Article
Guo, L., Yan, Y., Sun, W., & Zhu, J. (in press). Numerical investigation of flow unsteadiness and heat transfer on suction surface of rotating airfoils within a gas turbine cascade. Propulsion and Power Research, https://doi.org/10.1016/j.jppr.2017.05.005

The effects of the periodical turbulence and pressure fluctuation on suction surface heat transfer over airfoils of a row of rotor blades with a certain type have been investigated numerically in this paper. The calculation is performed using model w... Read More about Numerical investigation of flow unsteadiness and heat transfer on suction surface of rotating airfoils within a gas turbine cascade.

Experimental study of an organic Rankine cycle system with radial inflow turbine and R123 (2017)
Journal Article
Shao, L., Zhu, J., Meng, X., Wei, X., & Ma, X. (2017). Experimental study of an organic Rankine cycle system with radial inflow turbine and R123. Applied Thermal Engineering, 124, https://doi.org/10.1016/j.applthermaleng.2017.06.042

A new micro radial inflow turbine is developed fora mini organic Rankine cycle (ORC) system in this study. With R123 as the working fluid, the turbine operational characteristics and performance are investigated by experiments. Based on the experimen... Read More about Experimental study of an organic Rankine cycle system with radial inflow turbine and R123.

Performance testing of a cross-flow membrane-based liquid desiccant dehumidification system (2017)
Journal Article
Bai, H., Zhu, J., Chen, Z., Ma, L., Wang, R., & Li, T. (2017). Performance testing of a cross-flow membrane-based liquid desiccant dehumidification system. Applied Thermal Engineering, 119, https://doi.org/10.1016/j.applthermaleng.2017.03.058

A membrane-based liquid desiccant dehumidification system is one of high energy efficient dehumidification approaches, which allows heat and moisture transfers between air stream and desiccant solution without carryover problem. The system performanc... Read More about Performance testing of a cross-flow membrane-based liquid desiccant dehumidification system.

Performance analysis of thermoelectric generator using dc-dc converter with incremental conductance based maximum power point tracking (2017)
Journal Article
Twaha, S., Zhu, J., Yan, Y., Li, B., & Huang, K. (in press). Performance analysis of thermoelectric generator using dc-dc converter with incremental conductance based maximum power point tracking. Energy for Sustainable Development, 37, https://doi.org/10.1016/j.esd.2017.01.003

Thermoelectric (TE) devices are regarded as alternative and environmentally friendly 7 for harvesting and recovering heat energy. Particularly, thermoelectric generators (TEGs) 8 are used for converting heat into electricity. One of the challenges be... Read More about Performance analysis of thermoelectric generator using dc-dc converter with incremental conductance based maximum power point tracking.

A comprehensive study on a novel concentric cylindrical thermoelectric power generation system (2017)
Journal Article
Huang, K., Li, B., Yan, Y., Li, Y., Twaha, S., & Zhu, J. (2017). A comprehensive study on a novel concentric cylindrical thermoelectric power generation system. Applied Thermal Engineering, 117, https://doi.org/10.1016/j.applthermaleng.2017.02.060

This paper presents the novel designs of a concentric cylindrical thermoelectric generator (CCTEG) and an annular thermoelectric module (ATEM). The simulations are carried out to compare the performance of ATEM and the conventional square-shaped ther... Read More about A comprehensive study on a novel concentric cylindrical thermoelectric power generation system.