text-only page produced automatically by LIFT Text Transcoder Skip all navigation and go to page contentSkip top navigation and go to directorate navigationSkip top navigation and go to page navigation
National Science Foundation Home National Science Foundation - Engineering (ENG)
Engineering (ENG)
design element
ENG Home
About ENG
Funding Opportunities
Awards
News
Events
Discoveries
Publications
Advisory Committee
Career Opportunities
See Additional ENG Resources
View ENG Staff
ENG Organizations
Chemical, Bioengineering, Environmental, and Transport Systems (CBET)
Civil, Mechanical and Manufacturing Innovation (CMMI)
Electrical, Communications and Cyber Systems (ECCS)
Engineering Education and Centers (EEC)
Emerging Frontiers in Research and Innovation (EFRI)
Industrial Innovation and Partnerships (IIP)
Proposals and Awards
Proposal and Award Policies and Procedures Guide
  Introduction
Proposal Preparation and Submission
bullet Grant Proposal Guide
  bullet Grants.gov Application Guide
Award and Administration
bullet Award and Administration Guide
Award Conditions
Other Types of Proposals
Merit Review
NSF Outreach
Policy Office
Additional ENG Resources
ENG Committee of Visitor (COV) Reports
NSF National Nanotechnology Initiative
Other Site Features
Special Reports
Research Overviews
Multimedia Gallery
Classroom Resources
NSF-Wide Investments

Email this pagePrint this page


Press Release 06-104
Self-Cooling Soda Bottles?

Researchers work to shrink technology that harnesses sun's energy to both heat and cool

A schematic representation of the miniaturization of the active building envelope (ABE) system.

A schematic representation highlights the active building envelope (ABE) system.
Credit and Larger Version

July 11, 2006

Every day, the sun bathes the planet in energy--free of charge--yet few systems can take advantage of that source for both heating and cooling. Now, researchers are making progress on a thin-film technology that adheres both solar cells and heat pumps onto surfaces, ultimately turning walls, windows, and maybe even soda bottles into climate control systems.

On July 12, 2006, Rensselaer Polytechnic Institute (RPI) researcher Steven Van Dessel and his colleagues will announce their most recent progress--including a computer model to help them simulate the climate within their test structure atop the RPI Student Union--at the Solar 2006 Conference in Denver, Colo.

For 4 years, the researchers have been working on their prototype Active Building Envelope (ABE) system. Comprised of solar panels, solid-state, thermoelectric heat pumps and a storage device to provide energy on rainy days (literally), the ABE system accomplishes the jobs of both cooling and heating, yet operates silently with no moving parts. NSF is supporting the team to determine if a microscale version of the technology will function effectively.

According to Van Dessel, thin-film advances could potentially lead to functional thermal coatings composed of transparent ABE systems. Such systems might vastly improve the efficiency of temperature-control systems.

"The ease of application would make it possible to seamlessly attach the system to various building surfaces," he added, "possibly rendering conventional air conditioning and heating equipment obsolete."

Van Dessel hopes a thin-film version of the ABE system will see uses in a range of industries, from aerospace--in advanced thermal control systems in future space missions--to the automotive industry, where it could be applied to windshields and sun roofs, giving them the ability to heat or cool a car's interior.

"It also may be possible to one day use the ABE system to create packaging materials for thermal control," he added, "which could lead to things like self-cooling soda bottles."

Additional information is available in the RPI press release linked below.

-NSF-

Van Dessel will be giving a technical presentation on Wed., July 12th during the "Energy Efficiency, Renewable, and Green Technologies" session of the Solar 2006 conference, from 2:00-3:30 p.m. Van Dessel will discuss how the ABE system works, and the computational model he's developed to test the system's efficiency.

Abstract:

ISEC2006-99127; Technical

Development of a Computational Model for a Prototype Testing Room With Integrated ABE System

Authors: Steven Van Dessel and Xu Xu; Rensselaer Polytechnic Institute

Active Building Envelope (ABE) systems are a new technology for space heating and cooling, which integrate photovoltaic (PV) and thermoelectric (TE) technologies. In the ABE systems, a PV system is used to transfer solar energy directly into the electrical energy; this electrical energy is subsequently used to power a TE system. Depending on the direction of electrical current applied to the TE system, ABE systems can operate in a heating or cooling mode, and can compensate for thermal losses or gains that occur through a building's envelop or other thermal enclosure. ABE systems make use of solar energy, a clean and renewable energy resource. In order to assess the feasibility of the ABE system, we have developed a prototype ABE-window system. In conjunction with developing this prototype, we have also developed an outdoor testing room to test our ABE window system. Our current experimental setup allows us to measure the temperatures inside and outside of this window testing room.

To assess the effectiveness of the ABE system while in operation in the testing room, it is necessary to determine the comparative temperature for the same testing room without the TE system operating, for similar environmental conditions. There are two main methods to establish such control. The first method is to develop two identical experiments and test them simultaneously, one with, and one without, the ABE system in operating mode. The second method involves computing the indoor temperature through a simulation method. In our research we have opted for this second method.

In this study, we have built a computational model to predict the indoor temperature of an outdoor testing room and its integrated ABE system. The computational model uses the finite differential method, and includes the computation of solar radiation, heat transfer through the testing room surfaces and the ABE-window, and a model for the indoor air. We have verified the model's accuracy by comparing the simulation results of this model with actual temperature data. We have found that there was good correlation between the model's prediction for indoor temperature, and the actual temperature measurements for our testing room. The model will be used in further studies to assess the effectiveness of the ABE system.

Session: 5-1 Component Simulation-1

Media Contacts
Joshua A. Chamot, NSF, (703) 292-7730, jchamot@nsf.gov
Amber Cleveland, Rensselaer Polytechnic Institute, (518) 276-2146, clevea@rpi.edu

Program Contacts
Perumalsamy Balaguru, NSF, (703) 292-7016, pbalagur@nsf.gov

Principal Investigators
Steven Van Dessel, Rensselaer Polytechnic Institute, (518) 276-2011, vandes2@rpi.edu

Related Websites
Steven Van Dessel homepage: http://www.rpi.edu/~vandes2/abe.htm
Related RPI press release: http://news.rpi.edu/update.do?artcenterkey=1246&setappvar=page(1)

The National Science Foundation (NSF) is an independent federal agency that supports fundamental research and education across all fields of science and engineering. In fiscal year (FY) 2014, its budget is $7.2 billion. NSF funds reach all 50 states through grants to nearly 2,000 colleges, universities and other institutions. Each year, NSF receives about 50,000 competitive requests for funding, and makes about 11,500 new funding awards. NSF also awards about $593 million in professional and service contracts yearly.

 Get News Updates by Email 

Useful NSF Web Sites:
NSF Home Page: http://www.nsf.gov
NSF News: http://www.nsf.gov/news/
For the News Media: http://www.nsf.gov/news/newsroom.jsp
Science and Engineering Statistics: http://www.nsf.gov/statistics/
Awards Searches: http://www.nsf.gov/awardsearch/

 

A working prototype of the original ABE system is located on the roof of RPI's Student Union.
A working prototype of the original ABE system is located on the roof of RPI's Student Union.
Credit and Larger Version

Alt
View Video
The ABE technology, still in developmental stages, can both heat and cool an enclosure.
Credit and Larger Version



Email this pagePrint this page
Back to Top of page