Pitched roof photovoltaic efficiency-improving and fresh air preheating system
A technology of fresh air preheating and sloping roofs, applied in the field of solar thermal utilization, can solve problems such as the reduction of photoelectric conversion efficiency, achieve the effects of easy operation, increase inlet temperature, and save heating energy consumption
Active Publication Date: 2017-03-29
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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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; b...
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[0048] Taking the climatic conditions in Xi'an as an example, such as Figure 6 As shown, using Trnsys to simulate the outlet temperature of air collector 2 in December under the conditions of sloping roof photovoltaic efficiency and fresh air preheating system, and comparing it with the outdoor ambient temperature, it can be seen that the outlet temperature of preheated air can reach 50°C, and there is Better fresh air preheating effect can achieve the purpose of reducing fresh air load.
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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...
Claims
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Login to view more IPC IPC(8): F24J2/04F24F5/00F24F7/04H02S40/44E04D13/18
CPCH02S40/44F24F5/0046F24F7/04F24S10/00F24F2005/0067Y02E10/44Y02E10/60Y02B10/20Y02B10/70Y02E10/50Y02B10/10
Inventor 刘艳峰王玥王登甲姜超
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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