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

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

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

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

5. A study energy conversion by a porous combustor-heat exchanger with cyclic flow reversal combustion
Sumrerng Jugjai, Chanon Chuenchit