Real-world industrial heat recovery projects with verified energy savings
Installed flue gas-to-water heat recovery units on two 220t/h CFB boilers. Reduced exhaust temperature from 175°C to 82°C. Annual coal saving: 6,800 tons. Payback period: 1.8 years.
Designed all-welded plate heat exchanger cooling system to cool reactor discharge from 120°C to 38°C. Cooling capacity: 4×850kW. Significantly improved product quality stability.
Used hygienic detachable plate heat exchangers to recover 85°C steam condensate waste heat for preheating boiler feed water. Annual natural gas saving: 2.1 million Nm³. Cost saving: ~¥5.2M/year.
Installed tubular air preheater in tunnel kiln flue duct. Uses 280°C flue gas to preheat combustion air to 180°C. Fuel savings: 12%. Annual coal saving: 2,100 tons.
Installed finned tube waste heat recovery units on 6 stenter exhaust ducts. Recovered 200°C exhaust heat for fresh air heating. Annual natural gas saving: 1.55M Nm³.
Integrated sanitary cross-flow plate heat recovery modules in AHU systems for a GMP cleanroom. Heat recovery efficiency: 72%. Annual electricity saving: 860,000 kWh.
Installed 4 large detachable plate heat exchangers as free cooling units. 2,800 hours/year of free cooling operation. PUE reduced from 1.52 to 1.41.