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Abstract: Although the critical two-phase flow of refrigerant through
adiabatic capillary tube is nonlinear, its mass flow characteristics
under some typical operating conditions show good linearity. Application
of the linear characteristics is helpful to modify or simplify the
design and rating method of capillary tube. The linear characteristics
are interpreted and extended by the approximate analytic method.
Experimental data from the open literature and additional numerical data
from an advanced distributed-parameter model for R22, R410A and R407C
are used to illustrate the proposed theoretical relations and conform
well to the theory.
Key words: Refrigeration Capillary tube Refrigerant
CLC No: TB 65
国家自然科学基金资助项目(50306016).
Received 20040508, received in revised form 20041208
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