Item | Data assumptions | Value |
Electricity utility grid | Efficiency (%) | 30 |
Service charge (THB/kWh) | 312.24 | |
Demand charge (THB/kW) | 132.93 | |
Energy price-on peak/off peak (THB/kWh) | 2.176/3.6796 | |
Natural gas | Energy price (THB/mmB TU) | 350 |
Air-conditioning system | Coefficient of performance (COP) | 3 |
Lifetime (year) | 10 | |
Capital cost (´103 THB/kW) | 5.2 | |
Absorption chiller | Coefficient of performance (COP) | 1.1 |
Lifetime (year) | 15 | |
Capital cost (´103 THB/kW) | 15.48 | |
Back-up natural gas boiler | Efficiency (%) | 85 |
Lifetime (year) | 15 | |
Micro-cogeneration Plant | Capacity (kW) | 3, 6, 9, 12, 15, 18, 21, 24, 27, 30 |
Electricity efficiency, hE (%) | 25, 30, 35, 40, 45 | |
Heat recovery efficiency, hH (%) | 25, 30, 35, 40, 45 | |
Capital cost (´103 THB/kW) | 64.52 | |
Lifetime (year) | 15 | |
Others | Interest rate (%) | 2 |