Heat transfer and pressure drop measurements in an air/molten salt direct-contact heat exchanger

Technical Report · Tue Nov 01 00:00:00 EST 1988

DOI:https://doi.org/10.2172/10102019· OSTI ID:10102019

Bohn, M. S.

This paper presents a comparison of experimental data with a recently published model of heat exchange in irrigated packed beds. Heat transfer and pressure drop were measured in a 150 mm (ID) column with a 610-mm bed of metal Pall rings. Molten nitrate salt and preheated air were the working fluids with a salt inlet temperature of approximately 440{degree}C and air inlet temperatures of approximately 230{degree}C. A comparison between the experimental data and the heat transfer model is made on the basis of heat transfer from the salt. For the range of air and salt flow rates tested, 0.3 to 1.2 kg/m{sup 2} s air flow and 6 to 18 kg/m{sup 2} s salt flow, the data agree with the model within 22% standard deviation. In addition, a model for the column pressure drop was validated, agreeing with the experimental data within 18% standard deviation over the range of column pressure drop from 40 to 1250 Pa/m. 25 refs., 7 figs., 2 tabs.

• Research Organization: Solar Energy Research Inst., Golden, CO (United States)
• DOE Contract Number: AC02-83CH10093
• OSTI ID: 10102019
• Report Number(s): SERI/TP-253-3426; CONF-890436-7; ON: DE89000837
• Resource Relation: Other Information: PBD: Nov 1988
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
14 SOLAR ENERGY
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PERFORMANCE TESTING
HEAT TRANSFER
PRESSURE DROP
SOLAR ENERGY
WASTE HEAT UTILIZATION
SCRUBBERS
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MASS TRANSFER
EXPERIMENTAL DATA
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HEAT TRANSFER AND FLUID FLOW
SOLAR COLLECTORS AND CONCENTRATORS
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WASTE HEAT RECOVERY AND UTILIZATION