In a previous blog, I detailed the purpose of humidity control in buildings. To summarize, this came down to three, non-mutually exclusive, reasons:
- Health and safety
- Maintenance of building materials
In this post, we will pay particular attention to designing dehumidification capacity of a dedicated outdoor air unit and which safety factors to consider and which to avoid.
When designing various types of DOAS systems, safety factors are often used by engineers. With safety factors, many DOAS systems are purposely built larger than needed for normal usage to allow for emergency situations, unexpected loads, misuse, or degradation. However, excessive use can result in much larger-than-necessary equipment, inflated installed costs, and excessive energy use. Continue reading