All Outputs (82)

Preliminary study on variable conductance loop thermosyphons (2017)
Journal Article
Cao, J., Pei, G., Chen, C., Jiao, D., & Jing, L. (2017). Preliminary study on variable conductance loop thermosyphons. Energy Conversion and Management, 147, 66-74. https://doi.org/10.1016/j.enconman.2017.04.105

Given that loop thermosyphons are widely used as simple and high-efficiency heat transfer devices, their passive heat transfer performance has attracted considerable research interest. The capability of loop thermosyphons for active heat transfer adj... Read More about Preliminary study on variable conductance loop thermosyphons.

Modeling and optimization of solar-powered cascade Rankine cycle system with respect to the characteristics of steam screw expander (2017)
Journal Article
Li, P., Li, J., Gao, G., Pei, G., Su, Y., Ji, J., & Ye, B. (2017). Modeling and optimization of solar-powered cascade Rankine cycle system with respect to the characteristics of steam screw expander. Renewable energy, 112, 398-412. https://doi.org/10.1016/j.renene.2017.05.054

© 2017 Elsevier Ltd The screw-type volumetric expander has great potential in distributed solar electric generating system (SEGS) applications regarding its ability of handling both steam and liquid. A parabolic trough collector (PTC)-coupled cascade... Read More about Modeling and optimization of solar-powered cascade Rankine cycle system with respect to the characteristics of steam screw expander.

Preliminary thermal analysis of a combined photovoltaic–photothermic–nocturnal radiative cooling system (2017)
Journal Article
Hu, M., Zhao, B., Li, J., Wang, Y., & Pei, G. (2017). Preliminary thermal analysis of a combined photovoltaic–photothermic–nocturnal radiative cooling system. Energy, 137, 419-430. https://doi.org/10.1016/j.energy.2017.03.075

A novel combined photovoltaic–photothermic–nocturnal radiative cooling (PV–PT–RC) system was proposed to achieve multifunctional and all-weather operation. The proposed system collects electricity and heat energy at daytime through PV and PT conversi... Read More about Preliminary thermal analysis of a combined photovoltaic–photothermic–nocturnal radiative cooling system.

Thermodynamic and economic investigation of a screw expander-based direct steam generation solar cascade Rankine cycle system using water as thermal storage fluid (2017)
Journal Article
Li, J., Li, P., Gao, G., Pei, G., Su, Y., & Ji, J. (2017). Thermodynamic and economic investigation of a screw expander-based direct steam generation solar cascade Rankine cycle system using water as thermal storage fluid. Applied energy, 195, 137-151. https://doi.org/10.1016/j.apenergy.2017.03.033

© 2017 Elsevier Ltd Solar electricity generation system (SEGS) which employs cascade steam-organic Rankine cycle (SORC) and steam screw expander (SE) is promising due to the high efficiency at moderate heat source temperature. This paper puts a speci... Read More about Thermodynamic and economic investigation of a screw expander-based direct steam generation solar cascade Rankine cycle system using water as thermal storage fluid.

Modelling of organic Rankine cycle efficiency with respect to the equivalent hot side temperature (2016)
Journal Article
Li, J., Alvi, J. Z., Pei, G., Su, Y., Li, P., Gao, G., & Ji, J. (2016). Modelling of organic Rankine cycle efficiency with respect to the equivalent hot side temperature. Energy, 115, 668-683. https://doi.org/10.1016/j.energy.2016.09.049

© 2016 Elsevier Ltd An indicator, namely equivalent hot side temperature (TEHST) is proposed for the organic Rankine cycle (ORC). TEHST is derived from ideal thermodynamic process, but can denote the efficiency of irreversible ORC. Study on 27 fluids... Read More about Modelling of organic Rankine cycle efficiency with respect to the equivalent hot side temperature.

Field test and preliminary analysis of a combined diurnal solar heating and nocturnal radiative cooling system (2016)
Journal Article
Hu, M., Pei, G., Wang, Q., Li, J., Wang, Y., & Ji, J. (2016). Field test and preliminary analysis of a combined diurnal solar heating and nocturnal radiative cooling system. Applied energy, 179, 899-908. https://doi.org/10.1016/j.apenergy.2016.07.066

© 2016 A type of composite surface was manufactured for trial to achieve integrated solar heating and radiative cooling functions. The spectral properties of the composite surface present a relatively clear selectivity in the spectra of solar heating... Read More about Field test and preliminary analysis of a combined diurnal solar heating and nocturnal radiative cooling system.

Experimental study of the effect of inclination angle on the thermal performance of heat pipe photovoltaic/thermal (PV/T) systems with wickless heat pipe and wire-meshed heat pipe (2016)
Journal Article
Hu, M., Zheng, R., Pei, G., Wang, Y., Li, J., & Ji, J. (2016). Experimental study of the effect of inclination angle on the thermal performance of heat pipe photovoltaic/thermal (PV/T) systems with wickless heat pipe and wire-meshed heat pipe. Applied thermal engineering, 106, 651-660. https://doi.org/10.1016/j.applthermaleng.2016.06.003

© 2016 Elsevier Ltd Two different heat pipe photovoltaic/thermal (PV/T) systems, namely, wickless heat pipe PV/T system and wire-meshed heat pipe PV/T system, were proposed. In this paper, the thermal performances of the two systems working on differ... Read More about Experimental study of the effect of inclination angle on the thermal performance of heat pipe photovoltaic/thermal (PV/T) systems with wickless heat pipe and wire-meshed heat pipe.

Performance evaluation of controllable separate heat pipes (2016)
Journal Article
Cao, J., Li, J., Zhao, P., Jiao, D., Li, P., Hu, M., & Pei, G. (2016). Performance evaluation of controllable separate heat pipes. Applied thermal engineering, 100, 518-527. https://doi.org/10.1016/j.applthermaleng.2016.02.044

© 2016 Elsevier Ltd. All rights reserved. A controllable separate heat pipe (CSHP) combined with cool storage can be an efficient and low-cost solution to release the necessary cool power and to improve the precision in the temperature control of coo... Read More about Performance evaluation of controllable separate heat pipes.

Numerical simulation and experimental validation of a high concentration photovoltaic/thermal module based on point-focus Fresnel lens (2016)
Journal Article
Xu, N., Ji, J., Sun, W., Huang, W., Li, J., & Jin, Z. (2016). Numerical simulation and experimental validation of a high concentration photovoltaic/thermal module based on point-focus Fresnel lens. Applied energy, 168, 269-281. https://doi.org/10.1016/j.apenergy.2016.01.077

© 2016 Elsevier Ltd. Characteristics of a high concentration photovoltaic/thermal (HCPV/T) module equipped with point-focus Fresnel lens have been investigated in this paper. Both electrical and thermal models of the module are developed by numerical... Read More about Numerical simulation and experimental validation of a high concentration photovoltaic/thermal module based on point-focus Fresnel lens.

A cascade organic Rankine cycle power generation system using hybrid solar energy and liquefied natural gas (2016)
Journal Article
Li, P., Li, J., Pei, G., & Ji, J. (2016). A cascade organic Rankine cycle power generation system using hybrid solar energy and liquefied natural gas. Solar Energy, 127, 136-146. https://doi.org/10.1016/j.solener.2016.01.029

© 2016 Elsevier Ltd. A cascade organic Rankine cycle (ORC) system utilizing solar energy and liquefied natural gas (LNG) for thermal power generation is proposed. Energy from solar collectors drives the evaporation of working fluid in the top cycle (... Read More about A cascade organic Rankine cycle power generation system using hybrid solar energy and liquefied natural gas.

Effect of working fluids on the performance of a novel direct vapor generation solar organic Rankine cycle system (2016)
Journal Article
Li, J., Alvi, J. Z., Pei, G., Ji, J., Li, P., & Fu, H. (2016). Effect of working fluids on the performance of a novel direct vapor generation solar organic Rankine cycle system. Applied thermal engineering, 98, 786-797. https://doi.org/10.1016/j.applthermaleng.2015.12.146

© 2015 Elsevier Ltd. All rights reserved. A novel solar organic Rankine cycle (ORC) system with direct vapor generation (DVG) is proposed. A heat storage unit is embedded in the ORC to guarantee the stability of power generation. Compared with conven... Read More about Effect of working fluids on the performance of a novel direct vapor generation solar organic Rankine cycle system.

Analysis of a novel solar electricity generation system using cascade Rankine cycle and steam screw expander (2016)
Journal Article
Li, J., Li, P., Pei, G., Alvi, J. Z., & Ji, J. (2016). Analysis of a novel solar electricity generation system using cascade Rankine cycle and steam screw expander. Applied energy, 165, 627-638. https://doi.org/10.1016/j.apenergy.2015.12.087

© 2015 Elsevier Ltd. A novel solar electricity generation system (SEGS) using cascade cycle is proposed. The top and the bottom are steam Rankine cycle (SRC) and organic Rankine cycle (ORC). Particulary, screw expander (SE), which is characterized by... Read More about Analysis of a novel solar electricity generation system using cascade Rankine cycle and steam screw expander.

Design of the ORC (organic Rankine cycle) condensation temperature with respect to the expander characteristics for domestic CHP (combined heat and power) applications (2014)
Journal Article
Li, J., Pei, G., Ji, J., Bai, X., Li, P., & Xia, L. (2014). Design of the ORC (organic Rankine cycle) condensation temperature with respect to the expander characteristics for domestic CHP (combined heat and power) applications. Energy, 77, 579-590. https://doi.org/10.1016/j.energy.2014.09.039

Domestic CHP (combined heat and power) generation is one new application of the ORC (organic Rankine cycle). An environment temperature fluctuation of 40°C through the year is common in many areas, where the consumer's demand on heat follows a season... Read More about Design of the ORC (organic Rankine cycle) condensation temperature with respect to the expander characteristics for domestic CHP (combined heat and power) applications.

Analysis of a novel gravity driven organic Rankine cycle for small-scale cogeneration applications (2013)
Journal Article
Li, J., Pei, G., Li, Y., & Ji, J. (2013). Analysis of a novel gravity driven organic Rankine cycle for small-scale cogeneration applications. Applied energy, 108, 34-44. https://doi.org/10.1016/j.apenergy.2013.03.014

A naturally-controlled organic Rankine cycle (ORC) without negative work is proposed. Compared with conventional ORCs, the novel system uses gravity instead of a pump to pressurize the working fluid, and hence the problems associated with the pump ca... Read More about Analysis of a novel gravity driven organic Rankine cycle for small-scale cogeneration applications.

Examination of the expander leaving loss in variable organic Rankine cycle operation (2012)
Journal Article
Li, J., Pei, G., Li, Y., Wang, D., & Ji, J. (2013). Examination of the expander leaving loss in variable organic Rankine cycle operation. Energy Conversion and Management, 65, 66-74. https://doi.org/10.1016/j.enconman.2012.06.023

The organic Rankine cycle (ORC) favorably operates at low temperature. It differs significantly from the steam Rankine cycle in fluid enthalpy drop during expansion and reaction to change in condensation temperature. In current method for ORC-based e... Read More about Examination of the expander leaving loss in variable organic Rankine cycle operation.

A novel organic thermodynamic cycle on the use of gravity for pressurization (2012)
Journal Article
Li, J., Pei, G., & Ji, J. (2012). A novel organic thermodynamic cycle on the use of gravity for pressurization. Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics, 33(5), 729-734

Compared with water pump used in the steam Rankine cycle, pump for the organic Rankine cycle (ORC) has several disadvantages such as great difficulty in manufacture, low efficiency, easily-invited cavitation and high cost. A novel organic fluid therm... Read More about A novel organic thermodynamic cycle on the use of gravity for pressurization.

Energetic and exergetic investigation of an organic Rankine cycle at different heat source temperatures (2012)
Journal Article
Li, J., Pei, G., Li, Y., Wang, D., & Ji, J. (2012). Energetic and exergetic investigation of an organic Rankine cycle at different heat source temperatures. Energy, 38(1), 85-95. https://doi.org/10.1016/j.energy.2011.12.032

The energetic and exergetic performance of an updated ORC (organic Rankine cycle) is investigated. The thermal efficiencies of the ORC at different heat source temperatures of about 100, 90, 80, and 70°C are explored. The thermodynamic irreversibilit... Read More about Energetic and exergetic investigation of an organic Rankine cycle at different heat source temperatures.

Evaluation of external heat loss from a small-scale expander used in organic Rankine cycle (2011)
Journal Article
Li, J., Pei, G., Li, Y., & Ji, J. (2011). Evaluation of external heat loss from a small-scale expander used in organic Rankine cycle. Applied thermal engineering, 31(14-15), 2694-2701. https://doi.org/10.1016/j.applthermaleng.2011.04.039

With the scaling down of the Organic Rankine Cycle (ORC), the engine shaft power is not only determined by the enthalpy drop in the expansion process but also the external heat loss from the expander. Theoretical and experimental support in evaluatin... Read More about Evaluation of external heat loss from a small-scale expander used in organic Rankine cycle.

Construction and dynamic test of a small-scale organic rankine cycle (2011)
Journal Article
Pei, G., Li, J., Li, Y., Wang, D., & Ji, J. (2011). Construction and dynamic test of a small-scale organic rankine cycle. Energy, 36(5), 3215-3223. https://doi.org/10.1016/j.energy.2011.03.010

The fundamentals of a newly constructed kW-scale Organic Rankine Cycle (ORC) system on the use of R123 were illustrated. A specially designed and manufactured turbine was innovatively applied to this system. Formulations were developed to examine the... Read More about Construction and dynamic test of a small-scale organic rankine cycle.

Design and analysis of a novel low-temperature solar thermal electric system with two-stage collectors and heat storage units (2011)
Journal Article
Gang, P., Jing, L., & Jie, J. (2011). Design and analysis of a novel low-temperature solar thermal electric system with two-stage collectors and heat storage units. Renewable energy, 36(9), 2324-2333. https://doi.org/10.1016/j.renene.2011.02.008

The proposed low-temperature solar thermal electric generation is based on the compound parabolic concentrator (CPC) of small concentration ratio and Organic Rankine Cycle (ORC). The technologies of CPC and ORC are analyzed, and feasibility of the sy... Read More about Design and analysis of a novel low-temperature solar thermal electric system with two-stage collectors and heat storage units.