A Closed System Respiratory Evaluator
Abstract
The CSRE simulates human respiration and performs all the metering, sensing, and recording functions necessary to evaluate the performance of space cabin simulators, pressure suit systems coupled to their environmental control systems; environmental control systems; life support systems; and rescue and survival systems. The respiratory functions simulated include oxygen consumption and carbon dioxide, water vapor and heat production. Oxygen consumption is simulated by physically extracting from the system under test gas at a rate sufficient to equal the oxygen consumption rate. Carbon dioxide production is simulated by bleeding CO2 into the system from a storage bottle. Water vapor is introduced by a conventional type humidifier while heat is added by an electrical radiator. The gas rates and heat are computed and automatically controlled by an analog computer directed electromechanical control system. The system thereby avoids the delicate problems of control, balance, undesirable by products, and erratic performance found in systems utilizing adsorption-absorption techniques, catalytic oxidation, or organic materials oxidized to provide the correct carbon dioxide, water, and heat input with simultaneous oxygen removal.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1967
- Accession Number
- AD0663754
Entities
People
- Max Sussman