SolarXWorks: Solar Powered Refrigeration System

Project Overview: Johnston Engineering recently completed a solar powered refrigeration system for our customer SolarXWorks.   We provided complete system design, build and test.  This system provides “cool” air conditioning or “cold” refrigerator conditions directly powered by sunlight.   The system, solar panels and cooling tent is shown in Figure 1. Figure […]

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Process development test fixture

Project Overview: We recently designed and delivered a manufacturing process development test fixture. This fixture allows our customer to validate a new time, temperature and pressure dependent process without the large investment required for production hardware.  This is a very inexpensive way to validate a new process and reduce risk […]

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Stop Box: Instant-access handgun retention device

The StopBox® is a portable instant-access handgun retention device that does not use batteries, electronics or external keys. The StopBox® hand gesture code lock is instinctive to use in the dark and under stress. Secure your firearm without sacrificing accessibility when you need it the most. Proudly made in America. […]

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Dew Point: Atmospheric Water Generator

Johnston Engineering has had the privilege to work with Dew Point Manufacturing. What we did: Johnston Engineering provided system level design and analysis to take this project from concept to reality. We provided systems engineering and mechanical engineering services including: Schematic design Plumbing and filtration system design Pressure drop analysis […]

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