• IHI Corporation

• IHI Corporation

The IHI Group has started a new initiative to utilize economic simulations as it plans to deploy technologies and services related to the environment and energy. Using sustainable aviation fuel (SAF) as an example, we will introduce our initiatives for predicting future energy trends.

• IHI Corporation

The IHI Group has made efforts to introduce ammonia, which does not emit carbon dioxide (CO₂) during combustion, as a fuel for pulverized coal-fired boilers and gas turbines, providing an effective means to achieve carbon neutrality at thermal power stations. Technological developments have been made to address the challenges of achieving stable and low nitrogen oxides (NOx) combustion posed by the properties of ammonia. As the culmination of its development efforts, IHI, in collaboration with JERA Co., Inc., successfully conducted a demonstration test of ammonia 20% firing at Unit 4 of the Hekinan Thermal Power Station of JERA, marking a significant first step towards commercialization.

• IHI Corporation

To achieve carbon neutrality in the chemical industry, IHI developed a burner fueled only by ammonia for naphtha cracking furnaces to reduce CO₂ emissions from such furnaces. Development was conducted in a basic combustion test furnace at the Development & Demonstration Park (D&D Park) in the IHI Aioi Works, and it was confirmed that the burner satisfied the specified performance.

• IHI Corporation

In recent years, the development of small modular reactors (SMRs), which have lower output than conventional nuclear reactors, has been actively pursued by various countries. It is considered that SMRs have the next-generation technologies suited to realize a decarbonized society. IHI has been engaged in the technological development of the VOYGR SMR power plants, developed by NuScale Power, LLC. in the United States. This article presents the updated development status of the VOYGR SMR.

• IHI Corporation

IHI is developing a soil carbon sequestration system to reduce carbon dioxide (CO₂) by producing biochar from plants that have absorbed CO₂ from the atmosphere through photosynthesis and fixing the biochar in the soil. If the heat generated by the biochar production process is used to substitute heat derived from fossil fuels, it can further contribute to CO₂ reduction.

• IHI Corporation

The IHI Group is making use of generative AI, including large language models (LLMs), to achieve digital transformation (DX). This article introduces the three phases of the IHI Group's LLM utilization and the specific initiatives involved in each of these phases.

• IHI Corporation

An autonomous underwater vehicle (AUV), also called an underwater drone, is a robot that can navigate unmannedly and autonomously underwater and undersea at depths that are difficult for humans to reach. This article introduces the functions, structure, and control of these AUVs using IHI's AUV as an example.

• IHI Corporation

Water Distribution Master, developed by IHI, is a tool that visualizes the uneven water distribution across each branch line of water at a rice field and presents solutions to resolve the uneven distribution. Using the results from this tool, water distribution managers can optimize agricultural water distribution and reduce water waste.

• SAITO Shiro, MUTAGUCHI Takusen, TAKAGI Yusuke, YAMAZAKI Toshihiro, IKEGAMI Kotaro

As bridges in Japan are aging, replacement works are conducted for slabs directly subjected to the load of passing vehicles. Many works conducted so far did not have much difficulty caused by bridge conditions, but more and more difficult works must be conducted in the future. In order to complete such works with a variety of severe conditions, the IHI Group has developed technologies for facilitating replacement of slabs. This paper introduces these technologies briefly.

• ISHIKAWA Atsushi, LIU Zhihong, HASHIBA Michitaro, YAMANE Yoshiyuki, ONIZUKA Hisakazu

Green electricity derived from renewable energy is essential for achieving carbon neutrality. Since the output of renewable energy is unstable, energy storage is required to ensure a stable supply, but the energy storage systems currently in use have drawbacks such as high cost, location constraints, and resource constraints. To solve these problems, IHI, in collaboration with Tsinghua University, developed a thermal storage system that utilizes fluidized bed technology as a large-scale, inexpensive energy storage system. The heat storage material used was silica sand, which is a heat medium commonly used in fluidized bed boilers. After conducting preliminary experiments and analyses, we performed a 100 kW class proof-of-concept (PoC) test and confirmed the effectiveness of the system.