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“Takenaka Eco Check” Simple Diagnostic Energy-Conserving Tool Developed for the Quick and Easy Preparation of Energy-Conserving Measures for Existing Buildings

Planning proposals for energy-conserving CO2-reduction measures while considering cost-effectiveness

March 29, 2010Takenaka Corporation

Aimed for use by office buildings, Takenaka Corporation (President: Toichi Takenaka) has developed the “Simple Diagnostic Energy-Conserving Tool (Takenaka Eco Check)” for easily appraising energy consumption reduction and CO2 emission reduction strategies and quickly preparing a report.
Planned implementation of energy-conservation measures for existing buildings will be required to meet the requirements of the revisions to the Rationalization in Energy Use Law which came into effect in April 2010, and to achieve the goals announced by the government to reduce greenhouse gases. Based on rough data of the energy usage of a building, and the renewal of architecture and equipment, this tool appraises the current energy consumption, estimates the possibility of reducing energy consumption and CO2 emissions, and prepares a report for the client. Also, with the function of calculating the estimated cost of refurbishing work, planned proposals can be made for reducing energy consumption and CO2 emissions while considering the cost-effectiveness.
In the future, the tool will be used nationwide centering on office buildings which are planning equipment renewal, and will gradually be used for other purpose buildings.

【Outline of the “Simple Diagnostic Energy-Conserving Tool (Takenaka Eco Check)”】

Using the tool to input the building usage data and architectural and equipment renewal data into a set format, the tool makes a simple appraisal of the effectiveness after implementing energy-conserving measures, and then produces a report. Based on rough data of the energy usage of the building being surveyed, the current energy usage can be “seen.” Hearings are then conducted regarding 30 energy-conserving measures including an energy-conserving promotion system, the specifications and renewal information for the architecture, the electrical, air-conditioning, water supply and drainage systems, and elevator equipment. These results are then used to produce a report showing estimate calculations of the energy-conserving effects of the entire building, as well as the energy-reduction amounts, annual cost reductions, CO2 reductions, and refurbishing work costs for each item.

<“Takenaka Eco-Check” Report Sample>

【Merits】

《Quick and easy production of a report by just inputting the data of the building operation conditions》

By just inputting the data of the building operation conditions, and architecture and equipment renewal information, the energy-conserving effects can be simply appraised and quickly produced into a report. There is no need to collect detailed data of each individual piece of equipment, and there is no burden on the client.

《Able to make a simulation of the energy-conserving measures of the entire building and the cost-effectiveness》

Through simulations, the client is able to grasp the energy-conserving effects of the entire building while giving consideration to equipment renewal and future energy-conserving strategies, and at the same time see the cost-effectiveness of individual measures.

Due to the revisions to the Rationalization in Energy Use Law which came into effect in April 2010, the scope of buildings that will become subject to this law has been greatly expanded, meaning there are much higher requirements for energy-conserving measures for existing buildings. Also, in order to achieve the goals announced by the government to reduce greenhouse gases, there are a growing number of cases where energy-conserving measures are being implemented into existing buildings when they require renewal work. Takenaka is committed to contributing to the social call for the reduction of CO2 gases, by providing optimal proposals and work according to the lifecycle of a building.