Real-time in-situ refractometer for concentration measurements in absorption machines

Conference · Wed Jan 01 04:00:00 EST 1986 · ASHRAE Trans.; (United States)

OSTI ID:6458093

Bostick, D T; Klatt, L N; Strain, J E; Perez-Blanco, H

An in-situ, real-time refractometer has been developed for the measurement of absorbent concentration in absorption machines. The refractive index of the absorber fluid is determined by measuring light loss from optical fiber cables that are immersed in the solution. The optical fibers have been modified by removing a portion of the cladding from the center of hard clad fiber optics to expose a segment of the core. The exposed portions of the fiber cores are placed at points within an absorption machine for which the measurement of absorbent concentration is desired. The entrance face of all modified fibers is illuminated with a light source. The amount of light lost from the core of each fiber to the absorber solution surrounding the fiber is measured and is directly related to the refractive index of the solution.

• Research Organization: Analytical Chemistry Div., Oak Ridge National Lab., Oak Ridge, TN 37831
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6458093
• Report Number(s): CONF-8606125-
• Conference Information: Journal Name: ASHRAE Trans.; (United States) Journal Volume: 92:2B
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320106* -- Energy Conservation
Consumption
& Utilization-- Building Equipment-- (1987-)
ABSORPTION REFRIGERATION CYCLE
ADSORBENTS
BUILDINGS
ENERGY SYSTEMS
EQUATIONS
FIBER OPTICS
FIBERS
FLUIDS
HEAT PUMPS
ILLUMINANCE
LIGHTING SYSTEMS
MEASURING INSTRUMENTS
OPTICAL FIBERS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
REAL TIME SYSTEMS
REFRACTIVITY
TEMPERATURE DEPENDENCE
THERMOCOUPLES
WORKING FLUIDS