Track: Systems and Equipment
Sponsor: SHASE
Chair: Ryozo Ooka, Ph.D., Member, University of Tokyo Institute of Industrial Science, Tokyo, Japan
Retrofitting is crucial, not only to save energy but also to rehabilitate systems, particularly old district heating and cooling systems. A retrofit project for a 20-year-old DHC system, which was honored with a SHASE Award, boosted overall plant efficiency by 29% by downsizing, reduction in pumping energy and replacement of centrifugal refrigerators. Another SHASE-awarded retrofit project was completed at a public natural history museum in Japan. Here, energy consumption was reduced by 43% using additional insulation, LED lighting and electrification of cooling and heating devices.

1. Energy-Saving Retrofit of Facilities in the Museum, Slashing Energy Consumption By 40%
Taro Nomura, Japan Facility Solutions, Inc., Tokyo, Japan
This museum is a large facility that handles natural history and plays a key role in boosting natural learning in Gunma Prefecture. Meanwhile, given the urgent need to reduce greenhouse gas emissions in Gunma Prefecture, significant reductions were also expected within this facility. Leveraging the ESCO project, we planned comprehensive energy-saving measures such as using a heat-storage air-conditioning system, LED lighting and additional insulations; aiming to drastically reduce CO2 emissions and energy consumption. Once this project got underway in 2014, energy consumption at this facility was reduced by more than 40% compared to the 2008 to 2010 average.

2. Energy-Saving Retrofitting of Heat Source in DHC
Satoshi Yamakawa, TEPCO Energy Partner, Incorporated, Tokyo, Japan
This DHC (District Heating and Cooling) established in 1989 is the first in Japan to utilize river water as a heat source and some unexpected issues have emerged through its operation. While it was renewed over the 2012-2014 period, with deliberate examination, a 20% improvement in energy efficiency was achieved, earning the Energy Conservation Grand Prize. This article outlines the system and the improvements made. Technologies introduced include a high-efficiency heat pump using renewable river water energy, control technology utilizing river water and preserving the river ecosystem and Cloud BEMS technology for high-efficiency.

Presented: Wednesday, January 24, 2018, 9:45 AM-10:45 AM
Run Time: 60 min.

This is a zip file that consists of PowerPoint slides synchronized with the audio-recording of the speaker (recorded presentation), PDF files of the slides, and audio only (mp3) for each presentation.