Quiet, Clean, Multi-fueled, Multi-kilowatt Thermophotovoltaic Generator
Abstract
A stand-alone generator that is capable of producing one kWatt was developed during the contract period. Power to weight ratio has been improved from 10 Watts/K to 50 Watts/K. Exhaust emissions are less than 1 PPM HC and 300 PPM CO. NOx emissions are still high but a Rhodium or Rubidium flash coating on the metal recuperator surface should get below the 15 PPM target. The automated start up and run program works well and allows one switch operation. Water cooling and noise suppression were achieved early in the program and cooling efficiency has been dramatically improved. Efficiency has been improved from marginal net power output to an efficiency of 7%. System modeling development has allowed pinpointing areas of efficiency loss and allows rapid optimization of cells and optical cavity. Work with matched emitters and improved recuperators have brought about improved combustion efficiency. Work on Tungsten coated matched emitters have begun although it appears that a hermetically sealed emitter must be used to prevent rapid oxidation of the metal. Shingle cell circuits have been designed manufactured and tested.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 20, 2000
- Accession Number
- ADA384298
Entities
People
- Michael Seal
Organizations
- Western Washington University