Arc Flash Boundary (ARC) - is the distance at which an electrical arc can flash. outward, which may endanger employees working on electrical equipment. Flash Protection Boundary (FPB) - theJcalculated safe working distance from. electrical equipment which would not expose the employee to the hazards.
Weight Reduction. All fresh foods contain water, which is its main source of weight (fruits are more than 80 to 90% water). However, during drying about 98% of the moisture in the food substance is removed, which reduces the weight by as much as 90%, making it lighter to carry backpacking. Aside from freeze-dryingâs use in backpacking and camping, the military also freeze-dries foods to make it easier for one person to carry large amounts.
3. Freeze-drying food requires a lot of energy. Freeze-drying is one of the most energy-intensive ways to preserve food, according to R. Paul Singh, a University of California-Davis food science and technology professor. Mountain House freeze-dries its food in 3,000-pound batches over a period of 18 to 20 hours.