Development of superior liquid coolants CCF-1. Final technical report, 1 September 1978-31 December 1979

Technical Report · Mon Dec 31 04:00:00 EST 1979

DOI:https://doi.org/10.2172/5606238· OSTI ID:5606238

Hodges, R M

A comprehensive study of four representative commercially available heat transfer fluids being used in solar systems was undertaken to establish the most cost effective fluid over the life of the system. Criteria for making the assessment were the relative results of fluid toxicity tests, fire hazards tests, collector stagnation tests, and physical property comparison data of various fluids. The specific fluids evaluated were Dow Corning SylthermTM 444 silicone, Uniroyal PAO-LV polyalphaolefin hydrocarbon, Union Carbide Prestone II ethylene glycol/water solution and Dow Chemical Ambitrol NTC propylene glycol/water solution. Although there is no essential difference in the installed cost when comparing solar systems based on each of these fluids, there is a very large cost difference between the systems when life cycle costing is performed on the systems. The system representing propylene glycol/water is by far the most costly system followed by the system representing ethylene glycol/water due to possible failures and maintenance schedules. The Uniroyal PAO-LV polyalphaolefin system is the third most expensive system. The SylthermTM 444 silicone system is the least expensive, offering little or no potential for catastrophic failure and does not require any fluid maintenance.

• Research Organization: Dow Corning Corp., Midland, MI (USA)
• Sponsoring Organization: USDOE
• DOE Contract Number: EM-78-C-04-4296
• OSTI ID: 5606238
• Report Number(s): ALO-4296-T2
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
141000* -- Solar Collectors & Concentrators
ALCOHOLS
ANTIFREEZE
AQUEOUS SOLUTIONS
COMBUSTION PROPERTIES
COMPARATIVE EVALUATIONS
COMPATIBILITY
CORROSIVE EFFECTS
COST
DATA
DATA FORMS
DENSITY
DISPERSIONS
EQUIPMENT
FAILURES
FIRE HAZARDS
FLUIDS
GLYCOLS
GRAPHS
HAZARDS
HEAT TRANSFER FLUIDS
HYDROCARBONS
HYDROXY COMPOUNDS
INFORMATION
LIFE-CYCLE COST
MAINTENANCE
MIXTURES
ORGANIC COMPOUNDS
PERFORMANCE TESTING
PHYSICAL PROPERTIES
POLYMERS
SILICONES
SILOXANES
SOLAR COLLECTORS
SOLAR EQUIPMENT
SOLUTIONS
SPECIFIC HEAT
STAGNATION
TABLES
TESTING
THERMAL CONDUCTIVITY
THERMAL DEGRADATION
THERMODYNAMIC PROPERTIES
TOXICITY
VISCOSITY