Humidity Control in a Showcase for the Latest HVAC&R
Our client exemplified the practical implementation of integrated building solutions and sustainable practices with the inauguration of their flagship structure in Metro-Atlanta, Georgia. This state-of-the-art, high-performance net-zero-energy (NZE) facility stands as a testament to their commitment to environmental stewardship and innovation. Serving as a preeminent global headquarters, this building has become a renowned destination for industry leaders and delegates from across the globe, all seeking to immerse themselves in the forefront of pioneering engineering and architectural advancements.
Our Challenge
The state-of-the-art, high-performing net-zero-energy, efficient global headquarters building is a destination venue for industry representatives, visiting from around the world, who are looking to experience cutting-edge engineering and architectural interventions. High humidity was reported by the Executive VP, quoting: “Humidity feels high in west side workspace (64% at 75 degrees this morning in my office). There is a noticeable temperature shift going from the foyer to the west side workspace. Foyer is 50% humidity at 75 degrees.” Condensation is a severe issue in the building that, when ignored, can cause critical dampness problems to the walls, windows, fittings, fixtures, and wallpapers. It occurs when there is a high level of humidity inside a building – it transpires when warm air collides with a cold surface.
Our Solution
DOAS ERW (Dedicated Outdoor Air System, Energy Recovery Wheel comes with bypass dampers) requires in–sequence of operation to determine what priorities of its control will it give to humidity, temperature and energy. From time to time, the three variables will go into conflicts in sequence as humidity and temperature cannot be maintained at set points while having energy minimized at the same time. In the current sequence of operation, there is no priority given, hence humidity is not given a priority all the time. High humidity is often found when supply, exhaust fans, DOAS ERW and its bypass dampers do not operate in sync to keep dry air inside.
Our Results
Estimated potential saving of dehumidification with drier air for human comfort is over USD$ 16,000 per year, equaling 160,000 kWh of energy savings. This is equivalent to 113,000 kg of CO2 gas emissions saved – the same as burning 263 barrels of oil in the US.