Hybrid high-efficiency system for 38,000 sqm in Liaocheng, China

Customer Needs

The Luozhuang residential complex is a 38,000 m² condominium located in Liaocheng, Shandong Province. Hot water for the central heating system is supplied by a hybrid setup of gas boilers, gas absorption heat pumps, and electric heat pumps—designed to reduce emissions, improve system efficiency, and lower energy costs.

Advantages

• The heating system uses 227,800 kWh of renewable energy annually, saving around 42,530 m³ of gas.
• The modular setup enhances flexibility and operational reliability, adapting thermal output to real-time load demands and simplifying maintenance planning.
• The 20 heat pumps require just 17 kW of electrical power, saving approximately 260 kW compared to a fully electric solution, which would have required a major substation upgrade.
• Robur's gas absorption technology remains efficient even at outdoor temperatures as low as -30°C, ensuring uninterrupted performance in extreme cold.
• CO₂ emissions are reduced by 77 tonnes per year.

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