1. A study of energy conversion by a porous combustor-heat exchanger with cyclic flow reversal combustion
Sumerng Jugjai and Chanon Chuenchit

2. Emerging issues and new challenges in electric power systems
S.N. Singh

3. Heat pump dryers using hcfc 22 and hfc 134a as refrigerants
Umphisak Teeboonma, Somchart Soponronnarit, Jirawan Tiasuwan, Warunee Tia and Warraboon Kaewassadorn

4. Investingations on characteristic parameters and power degradation of amorphous silicon solar modules based on long-term outdoor testing
Marwan M. Mahmoud

5. The potential for wood gasifiers for tea drying in sri lanka
T.H. Jayah, R.J. Fuller, Lu Aye and D.F. Stewart