Thin polymer icemaker development and test program. Final report on technology

Technical Report · Thu Aug 01 04:00:00 EDT 1991

DOI:https://doi.org/10.2172/10158034· OSTI ID:10158034

Leigh, R W ^[1]

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1. Pratt Inst., Brooklyn, NY (United States)

We have constructed and tested a small device to produce ice in ice/water mixtures using a cold fluid as the heat sink. The device is a flexible heat exchanger constructed from a thin film of a suitable polymer. When filled with circulating liquid coolant the heat exchanger consists of an inflated series of parallel tubes; ice forms on the outside in complementary half cylinders. When the circulation is cut off, gravity drains the coolant and the static head of the water bath crushes the tubes, freeing them from the ice which floats to the surface. Brine circulation is then re-started and the cycle begins again. Here we report recent testing of this device: it makes ice readily under water and easily sheds the semi-cylinders of ice over many cycles of operation. It produces ice at a rate of 10 kg/m{sup 2}-hour. It offers substantial benefits in simplicity and reliability over mechanical harvester ice making systems, and the potential for significant improvements in energy efficiency compared to systems which use a re-heat cycle to harvest the ice. A reliable method of leak detection has been developed. The device should be of substantial value to systems where efficiency and reliability are at a premium, such as slush ice for district cooling.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 10158034
• Report Number(s): BNL--47549; ON: DE92016941
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320603
COMPUTERIZED CONTROL SYSTEMS
COOLING SYSTEMS
DATA ACQUISITION
DISTRICT COOLING
ENERGY BALANCE
HEAT EXCHANGERS
HEAT TRANSFER
ICE
PERFORMANCE
PRODUCTION
PROGRESS REPORT
PUBLIC UTILITIES
SLURRIES
TESTING
THERMAL ANALYSIS
WATER