Project WEG – Project reference:
Welschnofner Energiegewinnungs-genossenschaft

• Oscillating and unstable operation of the system at high output
• Frequent system failures
• Constant manual intervention is necessary, especially in winter
• Overall low ORC utilization
• No automatic load specification for the heat generators
• Operator must set suitable operating mode himself and adapt it daily to the conditions in the district heating network

• Uniform boiler output and avoidance of load drops.
• Increased automation with reduced manual intervention.
• Optimization of fuel flexibility and stabilization of steam management.
• Compliance with emission limits for CO and NOx.
• Increased efficiency by reducing gas consumption, caking and cleaning downtimes.

• Signal switching with Modbus TCP, connection with Siemens T3000. Technical specifications from us, programmer from Siemens
• FLR module: Quantity control of flue gas quantities, use of water content calculation for fire position correction and rezi quantities in the primary zone
• PSM/LHM module: Thermal oil boiler with ORC module and operating heat exchanger, economizer, fuel drying as controllable heat sink
  Control of all relevant water-side units including pump changeovers

Fire power control

• Increase in the ORC turbine’s power generation efficiency from approx. 93% to >99
• Additional yield from ORC power generation > € 50.000,-/a
• Automatic and trouble-free operation of the entire system in various load ranges
• Reduction in manual interventions from >20 h/week to < 1 h/week
• Combustion homogenization with constant target values in the furnace
• Continuous full-load operation of the entire system at the performance limit

Buffer storage management

• Automatic load specification to the boiler
• Compliance with buffer loading limits
• Fully automatic operation of the entire system, even with changing power consumption in the grid
• Consistent utilization of the ORC system
• Compensation of required load changes through controllable fuel drying