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Utilization of fep energetics
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Frederking, T. H. K. Abbassi, P. Ono, D. Y. Afifi, F. Khandhar, P. K. Chen, W. E. W. |
| Copyright Year | 1987 |
| Description | The research and development work on Fountain Effect Pump Systems (FEP systems) has been of interest in the competition between mechanical pumps for He II and FEP units. The latter do not have moving parts. In the course of the work, the energetics have been addressed using one part of a simple four-changes-of-state cycle. One option is the FEP ideal change of state at constant chemical potential (mu). The other option is the two-state sequence mu-P with a d mu=0 state change followed by an isobar. Questions of pump behavior, of flow rate response to temperature difference at the hot end, and related questions of thermodynamic cycle completion and heat transfer have been addressed. Porous media data obtained elucidate differences between vapor-liquid phase separation (VLPS) and Zero Net Mass Transfer (ZNMF). |
| File Size | 2031111 |
| Page Count | 66 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19880004997 |
| Archival Resource Key | ark:/13960/t1pg6k552 |
| Language | English |
| Publisher Date | 1987-12-31 |
| Access Restriction | Open |
| Subject Keyword | Mechanical Engineering Fluid Dynamics Porous Materials Vapor Phases Liquid Phases Cryogenic Fluids Mechanical Devices Helium Thermodynamics Equations of State Pumps Flow Velocity Phase Separation Materials Heat Transfer Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
