2017 September Event – From Shoebox Modeling to Detailed Modeling and to Urban Scale Modeling + BS 2017 Recap

2017 September Event – From Shoebox Modeling to Detailed Modeling and to Urban Scale Modeling + BS 2017 Recap

When: Wednesday, September 13 2017 at 6:00 PM (PT)

Location: WSP | 405 Howard Street, Suite 500 | San Francisco, CA 94105

6 pm to 6:30 pm - Networking (food & drinks provided)
6:30 pm to 7:45 pm - Presentation
7:45 pm to 8 pm - Questions

Students: free 
Professionals: $10

In-Person Registration:

Did you have a fantastic time in San Francisco during the Building Simulation 2017? Have you been hearing from your friends, colleagues about the Building Simulation 2017 Conference they recently attended in San Francisco? On September 13th, IPBSA-USA SFBA Chapter will host a recap event. Please come join us in person!

Dr. Yixing Chen | Senior Scientific Engineering Associate | Lawrence Berkeley National Laboratory
Harshul Singhal | Senior Sustainability Specialist | Skidmore, Owings & Merrill (SOM)

Dr. Yixing Chen is a Senior Scientific Engineering Associate with the Building Technology and Urban Systems Division. He currently focuses on urban system researches, including 3D city data models, city data analytics, and urban scale building energy modeling and retrofit analysis. He is the Lead Developer of the City Building Energy Saver (CityBES), a web-based platform to support the urban system researches. He also let the development of Commercial Building Energy Saver (CBES), a web-based tool for energy benchmarking, electric load shape analysis, and preliminary and detailed retrofit analysis using OpenStudio and EnergyPlus simulations. He also works on occupant behavior research to evaluate the impacts of occupant behaviors on building energy performance. He received Ph.D. from Syracuse University, USA. He got his M.S. in the Department of Building Science from National University of Singapore, and his B.S degree in Building Science Department from Tsinghua University in China.

Harshul Singhal (https://www.linkedin.com/in/harshulsinghal/) currently works as the Senior Sustainability Specialist for Skidmore, Owings & Merrill (SOM) in San Francisco office. His responsibilities include developing high performance design strategies for the design projects, performing specific analyses like energy modeling, daylight analysis, LEED or other green building standard analysis, and then the documentation of those strategies through visual and written presentations.

Part I: A web-based Platform for Urban System Researches - City Building Energy Saver (CityBES), by Dr. Yixing Chen
Part II: The Comparison of a Shoebox Model with Detailed Model, by Harshul Singhal 
Part III: Conference Recap/ Round Table Discussion

Presentation Description
Part I: Retrofitting District-Scale Buildings to Cut Energy Use By 50%: A Case Study, by Dr. Yixing Chen 
Buildings in cities consume 30 to 70% of the cities’ total primary energy. Retrofitting the existing building stock to improve energy efficiency and reduce energy use is a key strategy for cities to reduce green-house- gas emissions and mitigate climate change. Many cities and utilities provide rebates and incentives to support building retrofit, e.g., San Francisco (SF) Energy Watch program, supported by PG&E, offers incentives for energy efficiency upgrades of commercial and multifamily buildings in SF. It is critical for city managers to have a tool that can evaluate and prioritize energy conservation measures (ECMs), so they can design the rebates and incentives accordingly. 
City Building Energy Saver (CityBES, http://citybes.lbl.gov), a web-based platform, was developed by LBNL to support city-scale building energy efficiency. It uses the internaltional standard CityGML to represent the 3D building stock in cities, and uses EnergyPlus for detailed retrofit analysis of a wide array of building technologies. A prototype of the CityBES with retrofit analysis feature is freely available for public use. We present a case study on district-scale energy retrofit analysis using CityBES. Two retrofit scenarios are studied: evaluating energy savings and cost of typical energy conservation measures (ECMs) for a portfolio of hundreds of buildings in downtown San Francisco; and optimizing a package of ECMs that can achieve 50% energy savings for all buildings in the district.

Part II: The Comparison of a Shoebox Model with Detailed Model, by Harshul Singhal 
Architects are notoriously famous to demand the quick energy results during the early design phases. The reasons can be to get an early guidance from the energy analyst, as well as to save the billable time.
Working as an energy analyst for an architecture firm like SOM can be quite challenging where you are asked multiple times to run the quick results on a shoe-box model, although you aren’t sure whether this shoe box model can represent the correct results for the given project.  
This study is being done to compare the shoe-box model versus the detailed model for just NY & SF location, and understand how the results vary for every end use types. The study is a small part of the energy/daylighting research that SOM’s HPD (high performance design) group is trying to do for their existing & new buildings all over the globe.

Webinar attendees do not need to RSVP:
Webinar ID and audio information will be sent via email once you have registered.

Future Events:
Find out about future events by signing up for our email list or visiting our website: https://www.ibpsa.us/chapter/san-francisco

Wednesday, September 13, 2017