Heat transfer and pressure drop measurements in an air/molten salt direct-contact heat exchanger
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 (USA)
- DOE Contract Number:
- AC02-83CH10093
- OSTI ID:
- 6331047
- Report Number(s):
- SERI/TP-253-3426; CONF-890436-7; ON: DE89000837
- Resource Relation:
- Conference: American Society of Mechanical Engineers solar energy conference, San Diego, CA, USA, 2 Apr 1989; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
14 SOLAR ENERGY
20 FOSSIL-FUELED POWER PLANTS
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
DIRECT CONTACT HEAT EXCHANGERS
PERFORMANCE TESTING
EXPERIMENTAL DATA
HEAT TRANSFER
MASS TRANSFER
PRESSURE DROP
SCRUBBERS
SOLAR ENERGY
USES
WASTE HEAT UTILIZATION
DATA
ENERGY
ENERGY SOURCES
ENERGY TRANSFER
EQUIPMENT
HEAT EXCHANGERS
INFORMATION
NUMERICAL DATA
POLLUTION CONTROL EQUIPMENT
RENEWABLE ENERGY SOURCES
TESTING
WASTE PRODUCT UTILIZATION
420400* - Engineering- Heat Transfer & Fluid Flow
141000 - Solar Collectors & Concentrators
200105 - Fossil-Fueled Power Plants- Heat Utilization
320304 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Waste Heat Recovery & Utilization