Conceptual design selection and development of a latent-heat thermal-energy-storage subsystem for a saturated-steam solar receiver and load
The following latent heat storage concepts are described and evaluated in comparison with each other and with an oil/rock sensible heat storage system: (1) passive tube intensive (shell-and-tube heat exchanger) with and without heat transfer enhanced by fins; (2) phase change material cans (or chubbs) with a biphenyl intermediate heat transfer fluid; (3) phase change material macroencapsulation in a containment tank full of tubes; (4) microencapsulation in a porous carrier; (5) direct contact heat exchange; and (6) systems using mechanical scrapers for removing solidified phase change material from container surfaces. A tube intensive system with heat transfer enhancement was selected, and the conceptual design and cost/performance estimates are given for it. A commercial scale unit is assessed, and design changes and corresponding costs are presented that would be required to make the system meet changed requirements. (LEW)
- Research Organization:
- Sandia National Labs., Livermore, CA (USA); Combustion Engineering, Inc., Windsor, CT (USA). Advanced Development Dept.; Comstock and Wescott, Inc., Cambridge, MA (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6172137
- Report Number(s):
- SAND81-8184; ON: DE81029622; CEND-389
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
14 SOLAR ENERGY
140905
142000* -- Solar Energy-- Heat Storage-- (1980-)
ALKALI METAL COMPOUNDS
BOILERS
COMPARATIVE EVALUATIONS
COST
CSP
Concentrating Solar Power
DESIGN
ENERGY
ENERGY STORAGE
EQUIPMENT
EUTECTICS
HEAT
HEAT EXCHANGERS
HEAT STORAGE
HYDROGEN COMPOUNDS
HYDROXIDES
LATENT HEAT STORAGE
MATERIALS
NITRATES
NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PERFORMANCE
PHASE CHANGE MATERIALS
PROCESS HEAT
SODIUM COMPOUNDS
SODIUM HYDROXIDES
SODIUM NITRATES
SOLAR PROCESS HEAT
SOLAR RECEIVERS
STEAM GENERATORS
STORAGE
THERMAL ENERGY STORAGE EQUIPMENT
VAPOR GENERATORS
140905
142000* -- Solar Energy-- Heat Storage-- (1980-)
ALKALI METAL COMPOUNDS
BOILERS
COMPARATIVE EVALUATIONS
COST
CSP
Concentrating Solar Power
DESIGN
ENERGY
ENERGY STORAGE
EQUIPMENT
EUTECTICS
HEAT
HEAT EXCHANGERS
HEAT STORAGE
HYDROGEN COMPOUNDS
HYDROXIDES
LATENT HEAT STORAGE
MATERIALS
NITRATES
NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PERFORMANCE
PHASE CHANGE MATERIALS
PROCESS HEAT
SODIUM COMPOUNDS
SODIUM HYDROXIDES
SODIUM NITRATES
SOLAR PROCESS HEAT
SOLAR RECEIVERS
STEAM GENERATORS
STORAGE
THERMAL ENERGY STORAGE EQUIPMENT
VAPOR GENERATORS