MUTATION AND SNP IDENTIFICATION WITHOUT SEQUENCING

Not Available This project proposes the development of a low cost, ultra efficient, miniature, air handling system for portable fuel cell power supplies. The project will result in a low volume, low cost production system which employs advanced techniques (stereolithography, fused deposition modeling, layered object manufacturing, etc.) to rapidly make custom air handlers. The proposed air handler employs a sliding vane compressor (before fuel cell) coupled to a sliding vane expander (after fuel cell) thus providing very efficient, noiseless operation. A concept compressor/expander was sized for a 100-Watt power supply. The concept design provides .2 SCFM of air at a pressure ratio of 3.0 and only consumes 7.8 Watts while occupying 2 cubic inches of volume. A system analysis showed that the hydrogen storage tank comprised - 70% of total system weight (based on a 10 hour mission). Thus, compressor and fuel cell efficiencies play a critical role in keeping system weight down. The analysis showed system weight is minimized at a pressure ratio of ~3.0 (since higher pressure boosts fuel cell efficiency) and that the proposed expander reduced system weight by 15% (by reducing required compressor power). The concept minimizes noise by matching (with adjustments for losses) compressor and expander pressure ratios and massflows, thus eliminating sudden expansions that produce noise. BENEFITS: This work will result in an Army vendor, which can rapidly deliver low volume production runs of c