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Title: Heat transfer characteristics of a surface type direct contact boiler

Technical Report ·
DOI:https://doi.org/10.2172/7306810· OSTI ID:7306810

Two direct contact heat exchangers were constructed and test results were obtained using water and refrigerant 113 as the working fluids. The heat exchangers were operated in a three-phase mode; the water remained liquid throughout the vessel and the liquid refrigerant 113 underwent vaporization following direct injection into the water. The effect of important operational parameters--operating heights, refrigerant 113 injection techniques, mass flow ratios, and temperatures--was studied to determine generalized trends important in the design and operation of a prototype three-phase direct contact heat exchanger. The primary system used in this study performed well overall. The initial favorable results of this study warrant further investigation of direct contact heat exchange as a means of utilizing geothermal energy.

Research Organization:
Utah Univ., Salt Lake City (USA). Dept. of Mechanical Engineering
DOE Contract Number:
EY-76-S-07-1523
OSTI ID:
7306810
Report Number(s):
IDO-1523-2
Resource Relation:
Other Information: Thesis
Country of Publication:
United States
Language:
English