Performance Analysis of Wind-to-Heat Unit Coupled With Solar Photovoltaic Thermal System

doi:10.12096/j.2096-4528.pgt.260218

Abstract

Abstract:

Objectives With the proposal of the “dual carbon” goals, China is continuously promoting the adjustment and optimization of the energy structure to achieve the green transformation and sustainable development of the energy industry. To further diversify the forms of renewable energy utilization, it is necessary to investigate the coupled system of wind-to-heat unit and solar photovoltaic thermal (PV/T) technology. Methods Mathematical models of each component are established in MATLAB/Simulink. The operating characteristic curves of the wind-to-heat unit from cut-in wind speed to rated wind speed are simulated. The variation trends of the outlet water temperature of the solar PV/T module with ambient temperature under different solar radiation intensities, and the performance curves of the wind-to-heat unit coupled with the solar PV/T system, are analyzed. Results Through the simulation of the heat production of the wind-to-heat unit coupled with the solar PV/T system within one day in winter, the results demonstrate that the system can adequately meet the thermal load of users, and the electric energy generated by the solar PV/T module is also available for use. Conclusions The system effectively improves the overall utilization efficiency of clean energy, provides a new solution for the efficient utilization of clean energy, and offers a reference for the further optimization of energy structure and green transformation.

Key words: clean energy, wind energy, solar energy, wind-to-heat unit, photovoltaic thermal (PV/T), heat supply, coupling system, performance analysis

CLC Number:

TK 51

Kun LIU, Huiyun XIN, Yan FENG, Qianru REN, Xiangyu SUN, Xiaohui ZHONG. Performance Analysis of Wind-to-Heat Unit Coupled With Solar Photovoltaic Thermal System[J]. Power Generation Technology, 2026, 47(2): 422-430.

Figures/Tables 11

Fig. 1 Flow chart of wind-to-heat system

Fig. 2 Solar PV/T structure

Fig. 3 Wind-to-heat unit coupled with solar PV/T system

Fig. 4 Simulated wind speed

Fig. 5 Mechanical power and heat production of wind-to-heat unit

Fig. 6 COP of wind-to-heat unit

Fig. 7 Variation curves of mechanical power and heat production with wind speed

Fig. 8 Variation curve of COP with wind speed

Fig. 9 Variation trend of power generation per unit area and outlet water temperature with solar radiation intensity

Fig. 10 Daily variation curves of wind speed and solar radiation intensity

Fig. 11 Daily variation curves of heat production and heat load

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