Spectroscopic photovoltaic and photo-thermal joint hydrogen production system and use method thereof

Abstract

The invention relates to a photovoltaic photo-thermal joint hydrogen production system. The photovoltaic photo-thermal joint hydrogen production system comprises a light condensing device, a spectroscopic device, a photovoltaic and photo-thermal integrated device, a heat transfer pipeline, a water tank, an electrolyzing device and a hydrogen-water separating device, wherein the photovoltaic and photo-thermal integrated device comprises a photovoltaic assembly, a heat collecting plate and a heat pipe; and the electrolyzing device comprises an electrolytic cell and an electrolytic water pipeline which forms a circulating loop with the electrolytic cell. The invention also provides a use method of the photovoltaic photo-thermal joint hydrogen production system. Compared with the prior art, the photovoltaic photo-thermal joint hydrogen production system has an advantage that the total utilization efficiency of solar energy is effectively improved. The heat pipe aims at effectively lowering the temperature of the photovoltaic assembly with the heat transfer effect in order to increase the electrolytic hydrogen production efficiency by 10-15 %; the electrolytic water exchanges heat with a hot water system so as to raise the temperature of the electrolytic water, and thus the electrolytic hydrogen production efficiency of the system can be increased by 5 to 7%. The total hydrogen production efficiency of the system can be increased by about 20%, and the thermal efficiency can be increased by above 60%.

Description

technical field [0001] The invention relates to a split-photovoltaic photothermal combined hydrogen production system and its use method, belonging to the comprehensive utilization of solar energy and hydrogen energy, and in particular to a concentrating photovoltaic photothermal combined hydrogen production system and its use method. Background technique [0002] As an important industrial raw material and combustion aid reducing agent, hydrogen energy has been applied industrially in many places. It not only has high efficiency and high calorific value during use, but the final product is water without any pollution to the environment. It is generally considered to be a very important clean energy. Solar electrolytic hydrogen production uses solar photovoltaic power generation and electrolytic hydrogen production technology to convert discontinuous, low-energy-density solar energy into high-density, continuous and storable hydrogen energy. The input and output of the syst...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a split-type photovoltaic photothermal combined hydrogen production system and its use method to solve the problems existing in the prior art, very effectively reduce the temperature of the battery board, and increase the inlet temperature of the electrolyzed water. It overcomes the problems of low efficiency and high cost of traditional photovoltaic electrolysis hydrogen production, and at the same time, the present invention can fully realize the utilization of the full spectrum of solar energy, so that the system can obtain hot water temperature that meets the needs of users

Images