Heat recovery from the cooling water of diesel engines. By utilizing waste heat, energy costs for steam generation are reduced by approximately 55%, and CO2 emissions are reduced by approximately 40%.
■Case Overview A case study on energy-saving measures using heat pumps. Before implementation, steam was generated by a boiler and supplied to the clean room, but now the waste heat from the cooling water of a diesel engine is utilized. Heat recovery is achieved using a steam generation heat pump to supply steam, reducing the use of the boiler. As a result, energy costs associated with steam generation were reduced by approximately 55%, and CO2 emissions were reduced by about 40%.
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basic information
■About Steam Generation Heat Pumps Steam generation heat pumps recover and reheat the heat emitted from equipment, enabling the reuse of waste heat. They collect heat from waste hot water (60-80°C) discharged from factories and supply saturated steam (100-120°C). They support remote monitoring and operation, and by combining heat pumps with energy management systems, they enable energy savings and optimization of energy use throughout the entire food factory.
Applications/Examples of results
■Case Study: Energy-saving Measures Utilizing Excess Waste Heat from Diesel Engines ・Implementation Effects Reduced energy costs for steam generation by approximately 55% and CO2 emissions by approximately 40%. ・Voices from On-site Personnel At the Iiyama Plant of Fuji Electric Power Semiconductor, which manufactures power semiconductors for vehicles, self-generation of electricity using diesel engines is conducted on-site to ensure stable power supply. We were considering how to effectively utilize the unused waste heat generated by these engines to contribute to the factory's energy savings. We focused on the steam supplied to the clean room. In the clean room, steam is generated and humidified using a dedicated boiler to prevent static electricity. Since March 2015, we have introduced a steam generation heat pump and started a demonstration of supplying steam generated from the waste heat of the diesel engine. As a result, we were able to significantly reduce fuel and electricity costs compared to the energy-saving plan before the introduction of the steam generation heat pump.
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Company information
Providing solutions for various plants and factories such as food, chemicals, oil and gas pipelines, paper and pulp, and cleaning facilities. Our measurement and control systems have over 40 years of history since the launch of the first distributed control system in 1975. Based on our track record, we propose systems and solutions to support the latest technologies, IoT utilization, and the development of smart factories. - Steam generation heat pumps / waste heat utilization / visualization of thermal energy - Clamp-on steam flow meters / flow meters / flow sensors / thermal balance analysis - Industrial furnaces / electric furnaces / high-frequency induction furnaces / IGBT power supplies - Gas analyzers / gas measurement devices / gas analysis sensors - Predictive maintenance / anomaly detection maintenance / preventive maintenance / maintenance and prevention systems / smart security - Smart factory - MES / DCS / SCADA / edge controllers - EMS / energy management systems / visualization of energy - Smart glasses / remote work support systems - Multivariate analysis / MSPC - Engineering tools
