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Due to its low material and operating costs, it could turn out to be a clever alternative to expensive filter systems and ventilation by shortly wide opening th
by adolph 2y ago
Due to its low material and operating costs, it could turn out to be a clever alternative to expensive filter systems and ventilation by shortly wide opening the windows.
This is a neat idea that seems penny smart and pound foolish. For one, the article does not address overall system reliability and maintenance tempo. Given a low material to install cost ratio this is an important factor since repeated re-installation or rework will moot any cost savings from materials.
For two, ejecting the gases that have been expensively conditioned for thermal and humidity properties will drive up operating costs since replacement gasses will be required.
For three, hopefully they carefully plan for where the system exhausts since they have made something that concentrates contaminants as well as it evacuates them. To the extent that it uses tragedy of the commons to get better odds for people indoors by worsening odds for people outside that building, the primary innovation of the system is statistical arbitrage based on a larger outdoor volume.
- toast0 2y ago> For two, ejecting the gases that have been expensively conditioned for thermal and humidity properties will drive up operating costs since replacement gasses will be required. This application optimizes exhaust in rooms with operable, high mounted windows for exhaust. Most rooms with expensive conditioning don't have operable windows, so it's not really an option to use this design for those anyway. In a heavily conditioned space, the expectation would be external air ventilation would be managed near the centralized air handlers. Plenty of options there, like HRV/ERV depending on climate specifics. It might be possible to use a similar design to augment air returns from a conditioning system, but it's going to depends on the system if it would be useful or reasonable.