Battling Humidity: Transaera Unveils Innovative Solution

“The real challenge isn’t the temperature, it’s dealing with the humidity,” remarked a father, somewhere in time.

Though his children may dismiss the comment with an eye roll, particularly those who’ve experienced the desert Southwest’s summer, he’s onto something. High humidity not only decreases comfort but also puts additional pressure on air conditioning systems, with half of an AC unit’s energy dedicated to moisture removal from the air.

This issue of cooling is increasingly a concern for large corporations such as Amazon, Walmart, UPS, and FedEx, managing vast warehouse spaces where temperatures can soar, creating unsafely high heat levels.

A promising startup, Transaera, is tackling this challenge head-on by innovating an air conditioner that specifically targets humidity, leveraging a novel material to extract moisture prior to air cooling. This innovation has the potential to serve over 2 billion people in hot, humid areas who currently lack access to air conditioning while aiming for energy efficiency.

Initially focusing on commercial applications as it refines its consumer product, the company has begun deploying larger units for businesses and buildings, including warehouses. It recently celebrated the installation of its first outdoor air system on a client’s building, as confirmed exclusively to TechCrunch. This system notably lowers humidity levels for incoming air, easing the workload of existing air conditioning units.

“Although DOAS represents a minor fraction of the market, it’s on a clear growth trajectory,” Sorin Grama, co-founder and CEO, shared with TechCrunch. “It presents a more straightforward market entry point.”

Since its inception in 2017 in Somerville, Mass., Transaera has secured $7.5 million in funding, with a recent $4.5 million seed funding round, according to Grama. The firm is in the process of securing an additional $6 million to advance field trials of its pioneering system.

At the heart of Transaera’s innovation is a unique material enveloping the heat pump exchangers, reminiscent of a car radiator. This material effectively strips the air of moisture as it enters the DOAS, subsequently allowing the evaporator coils to cool the now-dry air to the desired indoor temperature.

The process of dehumidification and air conditioning inherently produces heat, which Transaera cleverly recycles to purify its desiccant material, coated on a rotating wheel, from moisture. This cycle not only removes humidity effectively but also reuses energy in an efficient manner. During colder months, the system can inverse its operation to help maintain indoor humidity levels while heating the air.

Although conventional DOAS systems also utilize heat pumps for air dehumidification, they often end up overcooling the air for the indoor environment, especially during transitional weather periods, which then necessitates reheating, often through energy-intensive means. Grama criticizes this as an “inefficient and illogical approach” for managing dedicated outdoor air systems.

Grama asserts that Transaera’s method consumes up to 40% less energy than the most efficient DOAS units currently available. While their technology is just beginning its commercial journey, the potential environmental impact is significant. With dehumidification accounting for 1% of global greenhouse gas emissions, a reduction in energy usage by 40% could markedly reduce that figure, a development any environmentally conscious parent would support.