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Terra-Cotta Pipe Evaporative Cooling Systems

Climate Resilience Project | Global Studios Research

University of Richmond | Richmond, Virginia

Project Overview

Mission

Develop and implement ancient terra-cotta pipe evaporative cooling systems to address urban heat islands and enhance climate resilience in Richmond, Virginia. This innovative project combines traditional indigenous knowledge with modern sustainability practices, following the model of An Liu's Helper Initiative to plan and prepare proposals for community beautification, city climate resilience grants, and data-driven responses to improve environmental impact statements.

Our project team includes Bobby Zeng, Yvonne Donkor, Kate Flanagan, Charlotte Donelan, Jason Yoo, and Professor Michael Marsh-Soloway, working alongside Mary Finley-Brooke, Mariela Mendez, Patricia Herrera, Alicia Diaz, Nathan Snaza, and guest speakers of the Humanities Center.

$10,000+
Grant Funding
3+
Parks
500+
Terra-Cotta Pipes
2
Pump Systems

Inspirational Indigeneity

Indigenous design has evolved over untold millennia to bring forth anonymous innovations that have helped to preserve, satisfy, and advance the needs, wants, and dreams of human civilization. This project draws inspiration from these ancient technologies to create sustainable cooling solutions for modern urban environments.

Indigenous Agricultural Practices

The Powhatan and Algonquin tribes perfected companion growing and crop rotation cycles in the "Three Sisters" method—simultaneously growing maize, beans, and squash. The corn stalk serves as a trellis for climbing beans, which preserve nitrogen in composite root systems, while squash leaves provide groundcover and shade that preserve soil moisture. The Tillamook and Umpqua peoples deployed permaculture infrastructure for animal enclosures, fish farms, and domiciles using living willow branch fences that strengthen with age.

Ancient Persian Innovations

Inhabitants of ancient Persia devised ingenious badgir structures to cool buildings by directing wind currents to residential interiors, and underground cistern-aqueducts called qanats that allowed people to store and transport water over great distances. They even created ice in harsh desert climates through cleverly integrated Yakhchāl structures that facilitate convection cooling. These systems, dating back to 500 BCE, are still used by local populations today.

Mughal Empire Cooling Systems

Engineers of the Mughal Empire developed analog air conditioning systems that produced evaporative cooling for temperature control by circulating water across the openings of terra cotta pipes. Water was pumped ingeniously without electricity, through air pumps, pressure-differential systems, and modifications to Heron's Fountain, promoting the intentional integration of rivers, rain basins, and lakes in urban infrastructure.

Stewardship and Sustainability

As Dr. Lyla June explains in her 2023 TED Talk "3000-Year Old Solutions to Modern Problems," indigenous land management techniques demonstrate how to take incrementally only what one needs and leave the rest. This mentality facilitated sustainable stewardship practices that allowed both nature and human populations to flourish in symbiosis. Our status as consumers should always coincide with our shared prerogative to serve as stewards of nature.

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Ancient Innovations

Badgir, Qanats, Yakhchāl, and Terra-Cotta Cooling Systems

Inspirational Sustainability

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Zero-Energy Cooling

Our terra-cotta pipe systems operate entirely through natural processes—no electricity required. Water evaporation creates cooling effects, reducing energy consumption and carbon footprint. This follows ancient Persian and Mughal Empire designs that used passive cooling convection.

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Water Efficiency

The system uses minimal water through controlled evaporation, similar to ancient qanat systems. Water is recirculated where possible, and the porous nature of terra-cotta ensures optimal water usage without waste.

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Climate Resilience

By reducing urban heat islands, these systems help mitigate the effects of climate change in local communities, creating more livable urban environments. Our empirical observations align with climate research from Hoffman et al. (2017) and ClimateCentral.org.

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Sustainable Materials

Terra-cotta is a natural, locally-sourced material that is durable, recyclable, and has minimal environmental impact compared to synthetic cooling alternatives. This approach recognizes and honors ancient methods while adapting them for modern use.

Environmental Benefits & Long-Term Goals

  • Innovation and Inspiration: Recognizing ancient methods and adapting them for modern urban infrastructure
  • Sustainability Advocacy: Promoting environmental stewardship and conscientious resource consumption
  • Future Applications: Planned expansion to factories, warehouses, integrated homes, and public squares
  • Community Impact: Data-driven responses to improve environmental impact statements and upcycle waste streams
  • Partnership Development: Forging collaborations with strategic firms, organizations, and government representatives

Prototype Development

Technical Specifications

System Components

  • 500+ Terra-Cotta Pipes: Custom-designed porous pipes for optimal water evaporation
  • Air Differential Pump: Creates pressure differential for water flow
  • Hydraulic Ram Pump: Lifts water using kinetic energy from flowing water
  • Water Distribution Network: Efficient routing system for maximum coverage

Implementation Sites

  • Multiple parks across Richmond, Virginia
  • Planned expansion to industrial areas with high cooling needs
  • Scalable design for future urban applications