frilevovolumet

Frilevovolumet is a fictional quantitative concept used in speculative science and world-building to describe the effective breathable air volume inside a sealed habitat. It integrates the geometric air volume with dynamic factors such as human respiration, humidity, heat load, gas exchange, and the performance of air-treatment systems, producing a single index that can be used to compare occupancy feasibility and system design.

The term frilevovolumet is a coined neologism from a fictional research tradition; the name is a portmanteau that evokes a measure of usable volume in frigid or closed environments, though no standard real-world definition exists outside of its use in speculative contexts.

Under a simplified framework, the frilevovolumet Fv for a habitat with N occupants, a geometric air volume V_geo, an equivalent supply rate Q_corr, and standard metabolic oxygen demand R_o2 can be described as Fv = (N * R_o2) / Q_corr, with V_geo and Q_corr expressed under standard conditions. In practice, Fv is reported as a dimensionless index or as a ratio V_eff / V_geo, where V_eff is the portion of the geometric volume considered effectively breathable after accounting for dead zones and air mixing. Higher values indicate more favorable air conditions for the given occupancy and equipment.

It appears in speculative engineering literature and fiction used to discuss long-term habitation design, space habitats, and environmental control systems. It serves as a simplified, narrative-friendly proxy for more detailed ventilation and air-quality analyses. It has no official status in real-world engineering practice.

Related concepts include free volume, ventilation rate, and CO2 balance in closed environments.