Mechanical Engineering
Running water on the edge of the Bering Sea

Chalkyitsik heat recovery diagram	DEHE mechanical engineering provides HVAC design services, design review, construction administration, and problem solving for remote facilities all over Alaska. Extreme climates and high energy costs call for state-of-the-art performance and reliability. Distance from urban centers demands simplicity of design. Energy conservation and alternative energy sources require innovation and creativity.
Dryer Pipes in Alatna, Alaska	Controls Design: Lack of nearby controls contractors, and a need for control systems that can be maintained locally, require detailed controls designs using off-the-shelf, readily available components. The diagram above shows a waste heat recovery system that adds heat to village water mains.
	Innovative Approaches:  Electricity costs exceeding $0.60/KWH, combined with no natural gas availability, means new approaches to drying clothes. The dryer piping system in Ruby pictured above uses 200-degrees Fahrenheit water in modified steam dryers to achieve cost-effective performance.

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