Determination of properties of fluids for solar cooling applications. Final report

Technical Report · Sun Aug 01 04:00:00 EDT 1982

OSTI ID:5394223

Podoll, R T; Gray, T E; Rolon, C E; Sabo, K A

The objectives of the project were to perform a detailed literature search for the available thermodynamic data of proposed refrigerant/adsorbent pairs (pure fluids and binary fluid mixtures) and to measure those data that were unmeasured or unreliable. The data to be obtained for the pure fluids included critical properties, the vapor pressure curve, the heat of vaporization at the normal boiling point, the freezing point, the specific heat of the liquid and vapor, and the specific volumes of the saturated liquids and vapors. For the fluid mixtures, the data included saturation temperatures, heats of mixing, and specific heats at several solution compositions. Most of the required thermodynamic data for the pure refrigerants were found in the literature survey. Very few data were found for the pure absorbents, but the normal instability of several of the absorbents was discussed in the literature. Methods for estimating pure fluid data were evaluated, and estimated thermodynamic values were given. No data of sufficient accuracy were found for any of the fluid mixtures. Thermal stability tests were conducted with all the absorbents. These tests indicated that ethylene glycol and 1,4-butanediol were too unstable to be considered for use at operating temperatures of 200/sup 0/C. Therefore, no experimental work on the ethylene glycol, 1,4-butanediol, and their six binary mixtures with ammonia, methylamine, and ethylamine was undertaken.

• Research Organization: SRI International, Menlo Park, CA (USA)
• DOE Contract Number: AC03-80CS30221
• OSTI ID: 5394223
• Report Number(s): DOE/CS/30221-T2; ON: DE85017219
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140901* -- Solar Thermal Utilization-- Space Heating & Cooling
36 MATERIALS SCIENCE
360603 -- Materials-- Properties
BOILING POINTS
CRITICAL PRESSURE
CRITICAL TEMPERATURE
DISPERSIONS
ENTHALPY
EQUIPMENT
FLUIDS
MELTING POINTS
MIXTURES
PHYSICAL PROPERTIES
REFRIGERANTS
SOLAR COOLING SYSTEMS
SOLAR EQUIPMENT
THERMODYNAMIC PROPERTIES
TRANSITION HEAT
TRANSITION TEMPERATURE
VAPOR PRESSURE
VAPORIZATION HEAT
WORKING FLUIDS