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Environmental-friendly roof system capable of generating electric energy and application of system

A green and electric energy technology, applied to biochemical fuel cells, roofs using tiles/slate tiles, roofs using flat panels/curved panels, etc., can solve the problems that the level of electricity production and durability cannot be effectively improved, and achieve energy The effect of high utilization efficiency, simple structure, and low construction and operation costs

Inactive Publication Date: 2013-06-19
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Sediment Microbial Fuel Cell (SMFC) is a sediment-based environmental system, using the catalytic action of microorganisms to convert chemical energy in organic matter The device directly converted into electric energy has more development value because of its simple reactor structure and is closer to practical application. However, the mass transfer limitation of anode organic matter in SMFC prevents its electricity production level and durability from being effectively improved.

Method used

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  • Environmental-friendly roof system capable of generating electric energy and application of system
  • Environmental-friendly roof system capable of generating electric energy and application of system
  • Environmental-friendly roof system capable of generating electric energy and application of system

Examples

Experimental program
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Effect test

Embodiment 1

[0040] like figure 1 As shown, a green roof system that can generate electricity includes a building roof with a plant-deposited microbial fuel cell on the roof. Specifically, the green roof system that can generate electric energy in this embodiment includes a soil layer above the roof, plants planted in the soil layer, and a water layer above the soil layer, and also includes several battery units, each battery unit It includes an anode electrode 1 and a cathode electrode 2 connected by wires, the anode electrode 1 is embedded in the soil layer, the cathode electrode 2 is suspended on the oxygen-enriched water surface of the water layer, and the root system 4 of the plant is planted near the anode electrode 1, The stems and leaves 3 of the plants pass through the cathode electrode 2 and are located above the water layer; several battery cells are connected with the energy storage device 5 after being connected by wires, and the energy storage device 5 is connected with the l...

Embodiment 2

[0046] On the basis of Example 1, the plant-sedimentary microbial fuel cell of the green roof system was selected from Xiaobaizhang, and two kinds of plant culture solutions were used to investigate respectively. The plant culture solution 1 was the same as the plant culture solution used in Example 1. Plant culture solution 2 is the plant culture solution without adding 10 mM phosphate buffer, and other experimental conditions are the same as embodiment 1, by power density and polarization curve ( image 3 ) shows that the maximum output power density of the plant culture solution 1 battery group is 24.0 mW / m2, which is 2.5 times that of the plant culture solution 2 group, and the apparent internal resistance of the battery is 190.0 Ω, which is 1106.0 Ω lower than that of the plant culture solution 2 group. At the same time, the pH change of the solution in the battery system is monitored ( Figure 4 ) shows that the pH of the plant culture solution group 1 drops slightly to ...

Embodiment 3

[0048] On the basis of Examples 1 and 2, a new type of green roof system of 1 m2 is constructed by selecting Xiaobaizhang-sedimentary microbial fuel cell. The experiment shows that about 9 battery units can be arranged, and the battery pack connection method of these 9 battery units is investigated. . Method 1: 9 battery cells are output in series; Method 2: Every 3 battery cells are connected in parallel and then output in series, such as Figure 5 shown. Under the two modes, the maximum output power density of the battery pack in mode 1 is 184.5 mW / m2, and the maximum output power density of the battery pack in mode 2 is 210 mW / m2. It can be seen that the battery pack in the design of the new green roof system adopts the hybrid mode of mode 2. The connection mode can reduce the energy loss in the series mode and improve the energy recovery efficiency.

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Abstract

The invention discloses an environmental-friendly roof system capable of generating electric energy, and application of the system and belongs to the field of environment conservation and new energy. The environmental-friendly roof system comprises a soil layer, plants planted in the soil layer, a water layer above the soil layer, and a plurality of cell units, wherein each cell unit comprises a positive electrode and a negative electrode which are connected with each other by virtue of a lead; the positive electrodes are embedded in the soil layer, and the negative electrodes are positioned in the water layer; the root systems of the plants are close to the positive electrodes, and the stem leaves of the plants penetrate through the negative electrodes and are above the water layer; and the plurality of cell units are connected with one another by leads and then are connected with an energy storage device which is connected with a load. According to the invention, soil microorganisms can convert solar energy into electric energy in an electrochemistry system, so that the environmental-friendly roof system is environment-friendly and has high energy utilization efficiency. The environmental-friendly roof system has a simple structure, depends on natural resources, does not need too much daily maintenance, is low in construction and running cost, and is suitable for promotion in modern cities.

Description

technical field [0001] The invention belongs to the fields of environmental protection and new energy, and in particular relates to a novel green roof system capable of generating electric energy by combining a plant-sedimentation microbial fuel cell with a green roof. The invention also provides the application of such a green roof system capable of generating electric energy. Background technique [0002] A green roof is a roof on which plants can grow. It is an ecological concept and a form of returning to nature. It turns flat greening into three-dimensional greening, becomes the extension and expansion of the ground landscape in the air, and is also a combination of architectural design and planting. , The combination of natural landscape and man-made green landscape is an indispensable part of sustainable development architecture. The emergence of green roofs has further enhanced the value of ordinary roofs. In addition to playing a basic protective role, it can also ...

Claims

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Application Information

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IPC IPC(8): H01M8/16E04D13/18
CPCY02E60/50
Inventor 吴夏芫宋天顺周楚新韦萍
Owner NANJING UNIV OF TECH
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