Pitched roof photovoltaic efficiency-improving and fresh air preheating system

Abstract

The invention discloses a pitched roof photovoltaic efficiency-improving and fresh air preheating system, which comprises a photovoltaic module arranged on a pitched roof. An air space is reserved between the photovoltaic module and the pitched roof; an air heating collector is arranged on the pitched roof and communicates with the air space; a funnel cap without power is arranged on the top part of the air heating collector and communicates with the inner part of the air heating collector through a connecting pipe; a fresh air preheating system is arranged above a room, and comprises a fresh air pipeline; one end of the fresh air pipeline is sealed, and the other end of the fresh air pipeline penetrates through a wall of the room; a fresh air supply pipe communicating with the inner part of the room is arranged on the fresh air pipeline; the air heating collector is connected onto the fresh air pipeline through a guide air pipe; and a first butterfly valve and a second butterfly valve are arranged on the connecting pipe and the guide air pipe. According to the pitched roof photovoltaic efficiency-improving and fresh air preheating system provided by the invention, the surface working temperature of the photovoltaic module can be reduced, and the photovoltaic power generation efficiency is improved; and meanwhile, waste heat is effectively utilized for preheating fresh air, so that the heating load in winter is reduced.

Description

technical field [0001] The invention belongs to the technical field of solar thermal utilization, and specifically relates to a sloping roof photovoltaic efficiency enhancement and fresh air preheating system for cooling solar photovoltaic modules and utilizing waste heat to improve photovoltaic power generation efficiency and reduce fresh air load of an air-conditioning system in winter. Background technique [0002] Building energy consumption is a major branch of social energy consumption and occupies a large proportion. Therefore, building energy conservation has become an important means for my country to achieve a low-carbon economy, complete energy conservation and emission reduction goals, and maintain sustainable economic development. At the same time, as a renewable clean energy, solar energy is inexhaustible and inexhaustible. Therefore, the use of solar power to meet the functional needs of buildings has become a building energy-saving measure encouraged by our co...

AI Technical Summary

Problems solved by technology

However, in the process of photoelectric conversion, solar photovoltaic modules will also absorb solar energy to make their surface temperature too high; because the temperature of photovoltaic modules is inversely proportional to their power generation efficiency, the photoelectric conversion efficiency is reduced

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