목차
- A 12,000 m2 district with a hospital wing, pool, and offices had a steady year-round heat demand and paid high grid electricity prices. A 500 kWe natural-gas CHP engine was installed to supply base-load power and capture jacket plus exhaust heat for space heating and domestic hot water.
- Electrical output: 500 kWe continuous. Recovered heat: approx 650 kWth at 80-90C water. Total fuel efficiency: ~85% vs ~40% for grid power alone.
- The CHP covered the high-grade water loop, but the buildings still vented conditioned air. Adding plate air-to-air exchangers on the ventilation side captured the remaining low-grade exhaust, complementing the water loop described in our CHP overview.
- Site CO2 cut by ~28%. Energy cost reduced by ~22%. Simple payback: 4.5 years.
- CHP pays only when heat demand is continuous and matches engine output - oversizing wastes the advantage. Validate with a payback calculation and see waste-heat recovery basics for the full heat ladder.
에이 12,000 m2 district with a hospital wing, pool, and offices had a steady year-round heat demand and paid high grid electricity prices. A 500 kWe natural-gas CHP engine was installed to supply base-load power and capture jacket plus exhaust heat for space heating and domestic hot water.
- Electrical output: 500 kWe continuous.
- Recovered heat: approx 650 kWth at 80-90C water.
- Total fuel efficiency: ~85% vs ~40% for grid power alone.
The CHP covered the high-grade water loop, but the buildings still vented conditioned air. Adding plate air-to-air exchangers on the ventilation side captured the remaining low-grade exhaust, complementing the water loop described in our CHP overview.
- Site CO2 cut by ~28%.
- Energy cost reduced by ~22%.
- Simple payback: 4.5 years.
CHP pays only when heat demand is continuous and matches engine output - oversizing wastes the advantage. Validate with a payback calculation and see waste-heat recovery basics for the full heat ladder.