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| The advantages and disadvantages of glass windows are following: |
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| Advantages: |
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| 1.Transparency: |
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| It offers superior Transparency has to be balanced with its relatively low R-value (energy saving). R-value is considered as one of the most important factors. |
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| 2.Re cyclic use: |
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| Glass can be reused for the production of new, different glasses products (external recycling). |
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| 3.Insulation: |
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| Low -E improves the insulation qualities. |
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| Disadvantages: |
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| Mining of glass sand results in particulate emissions, soil erosion, pollutant runoff. |
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| Air pollution associated with energy consumption for mining, processing, and transporting materials. |
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| Glass manufacturing release air pollutants that contribute to numerous environmental problems. |
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| Manufacturing is high energy consuming due to high temperature required for processing the raw materials. |
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| After demolition much glass is disposed off in landfill without reuse or recycle. |
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