space especially for startups in the technology industry. In the initial stage, observations are made
to analyze the ventilation system in the room that has the most users and the longest duration of
use. The analysis is focused on the direction of air movement by comparing where the position of
the air supply and the return point. Therefore, the movement of air in the room can be designed in
such a way that it doesn’t mix clean air with dirty air. This research is exploring solutions on how
existing conditions can be improved so that they can minimize the spread of COVID by engineering the spatial planning, ventilation system, and minimizing user capacity. This research compares
the before and after condition from the redesign proposal in the shared workspace and communal
space.
3 RESULT AND DISCUSSION
Based on the observation, it was found that shared working space has the most frequent use and
the longest duration of use. Almost all rooms in BDV are enclosed spaces using air conditioning as
a ventilation system. Shared workspace and communal space are not exceptions. Coworking space
in BDV is integrated inside a single building utilizing centralized air conditioning as the primary
airing system and is supported by a split system in several parts. Air conditioning works by sucking
air from the room then mixes with clean air from outside. The mixture from Cooling Tower enters
through the Air Handling Unit (AHU), is filtered, and then distributed through air evenly from each
AHU to every room. The situation of working space in BDV is shown in Figure 2.
Figure 2. Existing environment inside a coworking area in BDV.
The working desk is arranged in a group with a capacity of six people. Two people in the middle
are facing each other and there are two others on each side, as shown in Figure 3. In the existing
design, clean air is coming out of the supply outlet on the ceiling (blue color). Clean air mixes with
the air in the room and is used (orange color) to become dirty air (light green color). Then, the dirty
air is sucked in by a return inlet on the ceiling. Air movement has the potential to spread droplets
that have already fallen and may contain the virus to mix with clean air on the ceiling. Also, with
this close proximity of layout (less than 1 meter), each person has a greater exposure from infected
individual to droplets (see dark green color) (Nicas & Jones 2009; Li 2011).
Figure 4 illustrates two situations that can be implemented to adapt new habits in BDV. The first
and the best scenario is to open the window to dilute the inside air with the outside (see light blue
color) (Sun et al. 2011). The amount of air can be controlled so that the flow of cross ventilation
that enters the room is exactly what the occupants need to feel comfortable.
The second scenario, if the first scenario is not possible because of using the fixed window and
air conditioner, an AHU system must be equipped with UVGI irradiation as a filter to clean air
contaminated by the COVID virus (Schoen 2014). This system must also be modified in order
67
to analyze the ventilation system in the room that has the most users and the longest duration of
use. The analysis is focused on the direction of air movement by comparing where the position of
the air supply and the return point. Therefore, the movement of air in the room can be designed in
such a way that it doesn’t mix clean air with dirty air. This research is exploring solutions on how
existing conditions can be improved so that they can minimize the spread of COVID by engineering the spatial planning, ventilation system, and minimizing user capacity. This research compares
the before and after condition from the redesign proposal in the shared workspace and communal
space.
3 RESULT AND DISCUSSION
Based on the observation, it was found that shared working space has the most frequent use and
the longest duration of use. Almost all rooms in BDV are enclosed spaces using air conditioning as
a ventilation system. Shared workspace and communal space are not exceptions. Coworking space
in BDV is integrated inside a single building utilizing centralized air conditioning as the primary
airing system and is supported by a split system in several parts. Air conditioning works by sucking
air from the room then mixes with clean air from outside. The mixture from Cooling Tower enters
through the Air Handling Unit (AHU), is filtered, and then distributed through air evenly from each
AHU to every room. The situation of working space in BDV is shown in Figure 2.
Figure 2. Existing environment inside a coworking area in BDV.
The working desk is arranged in a group with a capacity of six people. Two people in the middle
are facing each other and there are two others on each side, as shown in Figure 3. In the existing
design, clean air is coming out of the supply outlet on the ceiling (blue color). Clean air mixes with
the air in the room and is used (orange color) to become dirty air (light green color). Then, the dirty
air is sucked in by a return inlet on the ceiling. Air movement has the potential to spread droplets
that have already fallen and may contain the virus to mix with clean air on the ceiling. Also, with
this close proximity of layout (less than 1 meter), each person has a greater exposure from infected
individual to droplets (see dark green color) (Nicas & Jones 2009; Li 2011).
Figure 4 illustrates two situations that can be implemented to adapt new habits in BDV. The first
and the best scenario is to open the window to dilute the inside air with the outside (see light blue
color) (Sun et al. 2011). The amount of air can be controlled so that the flow of cross ventilation
that enters the room is exactly what the occupants need to feel comfortable.
The second scenario, if the first scenario is not possible because of using the fixed window and
air conditioner, an AHU system must be equipped with UVGI irradiation as a filter to clean air
contaminated by the COVID virus (Schoen 2014). This system must also be modified in order
67