What is a characteristic of an open drying system?

An open drying system is characterized by the exchange of air between the indoor environment and the outside environment. In this type of system, the goal is often to take advantage of the typically lower humidity levels found outside to facilitate the drying process indoors. Therefore, it's common for the grams of moisture per pound (GPP) inside to be higher compared to the GPP outside, especially if the outdoor air is relatively dry.

This characteristic is essential because it influences the efficiency of the drying process; by allowing this exchange, the open system can help to reduce indoor humidity levels more effectively. Ultimately, this principle guides the approach to utilizing outdoor air to aid in drying when conditions are favorable, thus making a significant impact on the overall effectiveness of the drying operation.