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一、引言 两相区放汽过程在工程实际中常会遇到,例如,利用太阳能或低温余热的沸石吸附式制冷机,低温工程中的西蒙氦液化器,以及核工程和低温液体输送等方面。本文以平衡态为前提,运用变质量热力学原理,导出两相区放汽过程中排放汽量与系统温度下降的一般关系式,进而对水和氦,给出各自的具体计算式。这些公式简便明瞭,便于实际使用。此外,还进行了水在两相区放汽过程的观察和试验。
I. INTRODUCTION The process of releasing steam in the two-phase zone is often encountered in engineering practice. For example, zeolite adsorption refrigerators using solar energy or low temperature waste heat, Simon Helium liquefier in low temperature engineering, and nuclear engineering and cryogenic liquid transportation. In this paper, the equilibrium state as a prerequisite, the use of variable-mass thermodynamics principle, derive the two-phase area during the release of steam emissions and the system temperature drop general relationship, and then for water and helium, given their specific formula. These formulas are simple and easy to use. In addition, the observation and experiment of water release in the two-phase zone were also carried out.