Browsing by Author "Koss, Brian"
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Item The Integrated Carbon Dioxide Removal, Compression, and Storage (CRCS) System(47th International Conference on Environmental Systems, 2017-07-16) Richardson, Tra-My Justine; Jan, Darrell; Hogan, John; Palmer, Gary; Huang, Roger; Belancik, Grace; Samson, Jason; Koss, BrianThe Carbon Dioxide Removal, Compression, and Storage (CRCS) system was designed to remove carbon dioxide (CO2(g)) from the spacecraft cabin atmosphere and compress and store the CO2(g) for further processing. Previous conference papers describe the hardware design and functional testing of the single and dual beds. This paper discusses the integrated system test results when dry CO2(g) latent air (2600ppm CO2(g)) enters the system at 30SCFM.Item Performance of Silica Gel in the Role of Residual Air Drying(44th International Conference on Environmental Systems, 2014-07-13) Jan, Darrell; Hogan, John; Koss, Brian; Palmer, Gary H.; Richardson, Tra-My Justine; Knox, James; Linggi, PaulRemoval of carbon dioxide (CO2) is a necessary step in air revitalization and is often accomplished with sorbent materials. Since moisture competes with CO2 in zeolite sorbent materials, it is necessary to remove the water first. This is typically accomplished in two stages: “bulk” removal and “residual” drying. Silica gel is used as the bulk drying material in the Carbon Dioxide Removal Assembly (CDRA) in operation on ISS. There has been some speculation that silica gel may also be capable of serving as the residual drying material. This paper describes test apparatus and procedures for determining the performance of silica gel in residual air drying.Item Progress on the CO2 Removal and Compression System(45th International Conference on Environmental Systems, 2015-07-12) Richardson, Tra-My Justine; Jan, Darrell; Hogan, John; Palmer, Gary; Koss, Brian; Samson, Jason; Huang, Roger; Knox, JamesThe Carbon Dioxide Removal and Compression System (CRCS) is designed to perform both the Carbon Dioxide (CO2) removal function of the four-bed molecular sieve (4BMS) system currently employed on the International Space Station (ISS), as well as additional integrated ability to thermally compress CO2 to supply downstream CO2 recovery units. The CRCS approach will reduce cost and improve reliability for future long-duration missions. This paper describes progress in CRCS development over the past year. Performances of the bulk air dryer (BAD) and residual air dryer (RAD) have been previously reported. A single unit of the 2-Stage compressor was assembled and tested for development performance. Data from those tests was used in the assembly of a second unit and integration into a two-unit system.