Table 4 The analytical comparison of application classes of SGWs [7, 9, 11]
From: Employing systems of green walls to improve performance and rationalize energy in buildings
Po. | Features | Classes of Systems of Green Walls (SGWs) | |||
|---|---|---|---|---|---|
Living walls | Green facades | ||||
1 | Description | Plants and their roots are in fixed units on walls. | Plants are up a net fixed to the wall and have roots not extending into the ground. | Plants are up a net fixed to the wall and have roots in the ground. | Plants are directly on the wall and have roots in the ground. |
2 | Shape |
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3 | Impact on facades | There is no effect of plants on walls as there is no direct contact as the units act as a buffer between plants and a wall. | The negative impact of plants on walls is less severe since the grid on the wall touches the facade walls less relatively. | The negative impact of plants on the walls is more severe since they directly touch the facade walls, such as moisture and insects. | |
4 | Irrigation system | There is no effect on walls and foundations because the plants are watered by irrigation systems evolved. | In the case of not providing an isolated box for cultivation, there is a negative impact because irrigation is executed directly on the ground, which affects walls and foundations. | ||
5 | Rehabilitation and exchange | It is easy to replace the damaged part without affecting the rest of the system. | The system is connected to the grid installed on it, but this does not prevent interference among plants, which hinders replacing and renovating parts of such systems. | The entire system is interconnected as one unit, so it is difficult or impossible to replace parts and is required to be replaced and renewed completely. | |
6 | Aesthetics | It has an organized aesthetic shape, and color and size are controlled. | An organized aesthetic shape sometimes can be obtained. | An organized aesthetic shape is difficult to be acquired. | |
7 | The environmental impact on the system | It is more resilient, and damages are partial. | It is relatively resilient to the plants holding onto the structure installed on the building. | It is quickly affected by the weather from wind and rain. | |
8 | Shades and shadows | Shadows are from the units holding the plants. | The carrier grid controls the shadow shape. | Shades are provided to the facade equally by the plants themselves, and the shading degree depends on the plant density degree. | |
9 | Technical staff | High experiences | Intermediate experience | No experience | |
10 | Economy | High cost | Medium cost | Low cost | |
11 | Types of buildings in which it can be applied | It is suitable for making landscapes for aesthetic tall buildings and logos. | It is suitable for tall buildings; units can be repeated horizontally and vertically. | It is suitable for public and administrative buildings of limited height. | It is more suitable for residential buildings of limited height. |
