2 minute read
Regenerative Energy
REGENERATIVE LIFTS
Regenerative drives capture the heat generated by elevators during use and convert it into reusable energy for the building rather than wasting it as heat.
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The lifts in CH2 building generate power when it is in the breaking mode. This happen due to the building equip with power regeneration drive whereby energy is regenerated as electricity whenever the lift machine is operating in a generator mode. When the lift travels downwards with heavy load or upwards with light load, the traction machine will act as a power generator and the lift is in the regenerative mode which convert the energy generated from the lift motor driven by gravity into electricity for other uses . LIFT By adopting the lift power regeneration technology the CH2 can reduce the energy consumed by building transportation systems by up to 70% . To compare between the conventional lift and regenerative lifts are 20% to 30% more energy efficient.
A comparison of energy consumptions among different elevator systems. (Source: http://www.otisworldwide.com).
WATER SHOWERS
Placed on the south side of the building, these outdoor cooling ducts make use of both water and air conservation in order to cold down the interior of the inside space. Phase Change Materials (PCM) are used as a means to 'store' the coolness of the night and later use it to cool the building during the day. A good example would be around the summer, where the hot water in the cooling towers requires to be chilled, thus it the PCM reduces the temperature before they pass through the chilled beams and enter back into the office building.
There are 4 things to consider: Black Water Treatment, Grey Water Treatment, Rainwater Collection and the Hot Water Generation Plant. Nearly 100,00 liters of toilet water is taken from the nearby sewer, this waste, along with the sewage from CH2, goes through the water process treatment on site. Keeping in mind that this multi-water treatment helps reduce more than 70% of water from the nearby sewage to reduce the burden and allow as little waste as possible; the water is filtered out while the solids are thrown back to the gutters. Using a micro-filtration, the liquid gets treated enough to be suitable for non-drinking purposes such as water-cooling, plant treatment and toilet flushing. The rest gets used in other council buildings, city fountains and garden watering.
