Promotion of Highly Efficient Gas Heat Pump Air ConditionersTokyo Gas emphasizes the promotion of the GHP XAIR II series among its gas heat pump (GHP) air conditioners, which save both electricity and energy. The series reduces 20% of annual primary energy consumption, the highest level of efficiency, compared to the previous XAIR, by improving efficiency. This is achieved by slowing down engine rotation during low load operation, which accounts for a significant portion of their running hours.
*Energy consumption reductions from the model 15 years ago and XAIR are based on actual performance, while comparisons between the conventional XAIR and XAIR II are based on Tokyo Gas estimates.
Popularization of Air Conditioning to Use Water Evaporation HeatNatural chillers cool air inside rooms by producing cold water in a cycle of water evaporation, absorption, recovery and condensation. The system uses water as a refrigerant and a lithium bromide*1 water solution as an absorbent that does not include fluorocarbons.
*2 Gas engine-based CHP systems generate electricity and recover waste heat generated as a by-product.
*3 Green models are the most eco-friendly and reliable gas-using natural chillers and natural chillers that use waste hot water from CHP systems, selected by Tokyo Gas, Co., Ltd., Osaka Gas Co., Ltd. and Toho Gas Co., Ltd.
Cool Kitchens to Reduce Air Conditioning LoadWe recommend equipment that reduces kitchen heat. The so-called “cool kitchen equipment” reduces air conditioning load by 30%* compared to conventional kitchen equipment, and this helps to improve the kitchen environment while saving energy and cutting CO2 emissions.
Promotion of Highly Efficient Burners for Industrial FurnacesRegenerative burner systems capture heat from exhaust gas into a heat storage unit and use it to preheat an air feed. They boast extremely high combustion efficiency and low nitrogen oxides (NOx) emissions. Also boasting energy savings up to 50%, they have been drawing attention as the ultimate industrial furnaces for reducing CO2 emissions.
Environmental Friendliness of CHP SystemsCHP systems achieve high energy efficiency because they generate power close to electricity users in distributed generation with no transmission loss and effectively use waste heat from power generation.
Note: Estimated by Tokyo Gas
*1 On a lower heating value (LHV) basis. The heat efficiency and total loss at thermal power plants were calculated on the basis of the operating performance of Japan’s nine major power utilities plus power wholesalers in fiscal 2003 (Subcommittee on Classification Standards for Plants and Other Facilities, September 2005).
*2 Efficiency of CHP systems is on an LHV basis using the recommended configuration.
*3 Emission factor of the nine power utilities: 0.66 kg-CO2/kWh (average factor for fiscal 2030 in thermal power generation in the government’s Plan for Global Warming Countermeasures announced in May 2016).
Status of Diffusion of CHP SystemsCHP systems with a total output of 2,074,000 kW (excluding household units) are in operation in our service area. They are increasingly adopted across a wider range of fields, such as small- and medium-scale consumer use beyond residential use, owing mainly to the development of small models with an output of one kW to tens of kW, in addition to models chiefly designed for plants and commercial facilities with large heat loads.
Supporting Energy Savings with Package ContractsWe strive to provide one-stop solutions for customer issues related to energy. Concluding package contracts that cover finance, designing and construction work, equipment ownership, energy procurement, maintenance and other matters allows us to address those issues and meet customer needs in order to save energy and cut CO2 emissions so that we can provide an environment in which customers can focus on their business operations.
Energy-saving Services for PlantsWe provide various solutions to plants that not only save energy but also reduce CO2 emissions and costs. Our TG Miru-Net Service visualizes energy use with online measurement and analyses of equipment in order to save energy, and the Steam fit service, which provides comprehensive, ongoing support for steam systems from design to operation. We meet the needs for saving energy, cutting CO2 emissions and reducing cost with a variety of approaches.