Chemeketa Community College's Net-Zero Oasis
When tasked with retrofitting Chemeketa Community College's HVAC systems, leading ventilation designers at RACI Engineering knew sustainability was paramount. Understanding the importance of natural ventilation and fresh air for creating healthy learning environments, they partnered with WindowMaster. The highly-regarded 15,000 square-foot educational institution, based in Salem, Oregon, USA, is proudly Net Zero, a value which dictates any enhancements to the estate. With roots firmly planted in the natural world, it wanted to upgrade its ventilation capabilities simultaneously achieving indoor comfort and high IAQ, which minimising energy consumption and CO2 emissions.
Visit a reference projectProject partners
RACI EngineeringSeeking a sustainable and effective solution, RACI was immediately drawn to our natural ventilation systems, which has a proven track record of delivering exceptional results, seamlessly integrating with local ecosystems and weather conditions.
Given our experience in the global education sector, RACI was confident that specifying WindowMaster’s high-performance systems would create healthier, happier and more productive learning environments for both students and staff.
Let’s take a closer look at the project journey…
Moving in the right direction
RACI’s started by analysing how the building’s structure and layout could be harnessed to support the integration of the new system.
First, the building's East-West orientation allowed for the harnessing of prevailing North-South winds. To maximise the benefits of this naturally cool air, automated ‘mixed-mode’ operable windows were installed alongside wind-driven roof turbines to help facilitate passive ventilation and reduce the reliance on mechanical systems.
We then combined this with our MotorController 10A / 20A with touchscreen, to work in tandem with the college's weather system and rain sensor, to dynamically adjust window settings based on external conditions, boosting ventilation and energy efficiency.
Through the coordinated operation of its automated windows and BMS (Building Management System), the college was able to leverage the cooling potential of night air during the summer. This system then allowed the removal of hot air, ensuring that the building's temperature was reset each night – a process known as ‘night flushing’ or ‘night purging’.
Make hay while the sun shines
Other advanced design elements helped to regulate indoor temperatures effectively. One such feature was the building's capacity to capitalise on solar exposure, allowing the PV arrays on the roofs and covered arcade to produce clean energy. The building features external overhangs that effectively block direct sunlight from south-facing windows during the summer, reducing heat gain. However, these overhangs allow sunlight to penetrate the windows during the winter when the sun's angle is lower, providing natural warmth and year-round comfort.
Safety first
As the primary structure features Mass Plywood Panels (MMP) and mass timber from the region, fire safety was also a paramount concern. WindowMaster's WMX 814 Extra Small 1A Chain actuator, designed for surface mounting and smoke ventilation, was fitted to ensure efficient smoke and heat exhaust in case of an emergency.
The product seamlessly integrates with MotorLink® technology – WindowMaster's intelligent digital communication system that offers precise control and real-time feedback, ensuring millimetre-perfect window positioning.
Intelligent control of windows: MotorLink®
MotorLink® is a communication technology that enables 2-way control and feedback between window actuators and the Building Management System via the MotorController. All WindowMaster control systems are MotorLink® capable with many of our actuators. Click below to learn more and see related products.
Read more
Student-Centred Design
With such a heavy focus on student and staff health and wellbeing, the result is an impressive display of user-centred design. As well as serving as a positive influence to students, inspiring others to adopt more environmentally friendly approaches, Chemeketa Community College has created the ideal learning environment, allowing students to breathe easy and enjoy the benefits of their natural surroundings.
"Chemeketa Community College's embrace of natural ventilation has helped them breathe life into their Net-Zero vision. By creating fresh, comfortable spaces, they've made the campus a standout place for students to learn and grow, all while staying true to their surroundings and educational goals."
Peter Kater
Sales Director for North America, WindowMaster