|
Objective
This technology is a vapor compression solar refrigeration system that operates without batteries.
Description
The solar-powered refrigerator uses a variable speed direct current (DC) vapor compression cooling system. Electronic controls directly connect the refrigerators solar photovoltaic (PV) panel to its compressor. A well-insulated cabinet, generous thermal storage capability, high efficiency cooling system, and PV panel are all significant elements of this system, providing a year-round cool environment.
The purpose of this invention is to provide a practical new refrigeration system using abundant solar power, independent of electric grid or battery, thereby reducing weight and lowering transportation and maintenance cost.
Benefits
Solar Power:
The use of solar power technology in this system provides refrigeration in locations where there is no electrical service.
Thermal Energy Storage:
Thermal energy storage is incorporated into the new system by freezing water in the refrigerator cabinet. This process eliminates the need for batteries, decreasing cost, weight, and maintenance.
Vapor Compression System:
Vapor compression cooling provides higher efficiency than a solar thermal collector or thermal cycle heat pump used with other solar refrigerators.
Earth Friendly Technology:
Photovoltaic (PV) panels used to capture the solar energy are widely recognized as beneficial to the environment.
Potential Application(s)
Refrigeration in Areas Without Electricity:
This technology could serve as the primary refrigerator for environmentally conscious consumers and in underdeveloped countries and remote sites without electricity.
Back-Up or Supplemental Refrigerator:
This solar refrigerator could serve as a supplemental or back-up refrigerator system to ensure refrigeration to users located in areas that experience occasional electrical outages.
Freezer or Icemaker:
Easy modification of this invention transforms its use to a freezer or icemaker that operates without batteries.
Technology Commercialization Status
Development Status:
This technology has been developed into a working prototype.
Patent Status:
The invention, "Solar-Powered Refrigeration System," is protected under the following U. S. patents: 6,253,563, issued on July 3, 2001; 6,453,693, issued on September 24, 2002; and 6,469,487, issued on October 22, 2002. The patents are owned by the United States of America and were developed by the National Aeronautics and Space Administration.
Contact for Technical Information:
NASA Johnson Space Center
Technology Transfer and Commercialization Office
Mail Code HA
2101 NASA Rd. 1
Houston, TX 77058
Phone: (281) 483-1749
Fax: (281) 244-8452
E-mail: commercialization@jsc.nasa.gov
Related Technologies
Contact
If your company is interested in this technology please contact:
Terri Gilbert
Phone: (281) 483-1749
E-mail: terri.gilbert1@jsc.nasa.gov
Public Release Date: 10/29/2001
Reference Number: TOP9-159
|
