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12. Target 12.4: Hazardous Waste Generation

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Clean Energy

Clean Energy

Target 12.4: Hazardous waste generation

Indicator 12.4.2 is hazardous waste generated per capita and proportion of hazardous waste treated, by type of treatment.

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Responses

1. Exhaust ventilation system reduce the generated pollutants into the environment. 2. Passive ventilation reduces the air-condition usage and hydrocarbon refrigerant is used in most of the air conditioning system as it is non-toxic and has no ozone depleting properties.

Challenges

The engagement and participation of user within the university and the amenities provided poses a challenge as the designer needs to provide and fulfill the standards and protocols listed as their safety and health and wellbeing are the number one priority.

Contributions

Exhaust ventilation system

Constant extraction of air to keep the air clean and fresh. Exhausting fumes and channels commonly installed in the kitchen and bathroom helps to reduce the generated pollutants off the spaces with negative pressure implied.

Figure 8.1 is an exhaust ventilation system where the indoor air is continuously extracted to the outdoors with one or more fans often located in the bathrooms. Mechanical extract system is mostly used in bathrooms and kitchens where there is a need for constant extraction of contaminated air.

Figure 8.1 Exhaust ventilation system in Block E, Toilet

Passive Ventilation & Hydrocarbon Refrigerant

Passive ventilation is used throughout the building as it is maximized through the open spaces and common area throughout the day, reducing the need for usage of air-conditions and other ventilation technology. The passive ventilation provides cooling all throughout the building eventually decreasing the overall electrical usage and CFC emission into the environment.

In addition, hydrocarbon refrigerant is used in air-conditions system contributes minimal to zero potential of global warming. Hydrocarbon is also a low-cost energy saving chemical which is a common alternative to replace chlorofluorocarbons (CFC) that is linked to a high risk of ozone layer damage.

Figure 8.3 shows the cross-ventilation system integrated by using open spaces frontal and back of the building. Passive Ventilation reduces need for 24-hour Air-Conditioning. Therefore, reduces the release of CFC into the environment.

Figure 8.2 Cross-Ventilation of Block E

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