What is the impact of various water savings strategies on a large scale mixed used (residential, office, retails) building located in Shanghai China?



Submitted by:  Olivier

Firm Name: Skidmore, Owings, and Merrill LLP

ASHRAE Climate Zone: 3A

Building/Space Type:

  • Office

Who performed the simulation analysis?  

  • Architect - Internal Sustainability Personnel

What tools were used for the simulation analysis? 

  • OpenStudio + Eplus

  • EnergyPlus

What phase of the project was analysis conducted?  

  • Conceptual Design

What are the primary inputs of the analysis?  Floor plate area, user gender count, program use type, gallons of water consumption per year

What are the primary outputs of the analysis?  gallons of water


List the investigations questions that drove your analysis process.

How to address visually the sponge city requirements in Shanghai, China, with various water reduction strategies through the following measures: - high-efficiency plumbing fixtures - no potable water use for plant irrigation - greywater recycling - condensate recovery - rainwater harvesting at roof level - permeable surfaces, bioswales

How was simulation integrated into the overall design process?


How did you set up the simulation analysis and workflow?

The simulation analysis followed best practices to reduce water savings through reduction, optimization, collection (green roof), on-site treatment and reuse (greywater). All the numbers were manually calculated using the LEED calculations. Some water consumption inputs came from the energy modeling outputs of the water system. The water rain collection metric came from the local weather file. The evaporation through the cooling tower came from the MEP team.

How did you visualize the results to the design team? What was successful about the graphics that you used to communicate the data?

The tool used is "E-sankey" to create sankey diagrams. Not listed on the list above.

Most importantly, what did you learn from the investigation?  How did simulation and its outputs influence the design of the project?

Adding a water story to the project statio competition would be a suggestion.