Carbon dioxide solid sublimation device

Abstract

The invention discloses a carbon dioxide solid sublimation device. The carbon dioxide solid sublimation device realizes the combination of high-pressure carbon dioxide liquid cross-triple point expansion, carbon dioxide solid sublimation and residual carbon dioxide cold energy recovery. The carbon dioxide solid sublimation device comprises a high-pressure carbon dioxide liquid inflow pipe (1), a sublimation device outer-pipe (2) for heat exchange with a heat source, high-pressure carbon dioxide liquid spray pipes (3), an optional throttle expansion valve (4), a sublimed carbon dioxide gas outflow pipe (5) and a sublimation device inner pipe (6). The carbon dioxide solid sublimation device improves a coefficient of surface heat exchange between solid carbon dioxide particles and a heat exchange surface, improves heat exchange efficiency, improves an equipment refrigeration capability, effectively solves the problem that when the environment changes, carbon dioxide solids are residual and the residual carbon dioxide solids damage a refrigeration system, and improves system stability.

Description

technical field [0001] The invention relates to a carbon dioxide solid sublimator, in particular to a carbon dioxide solid sublimator integrating expansion of high-pressure carbon dioxide liquid across triple points, sublimation of carbon dioxide solid particles, and recovery of residual carbon dioxide cold energy. Background technique [0002] With the development of science and technology and the improvement of living standards, the role and status of refrigeration technology in various sectors such as industry, agriculture, national defense, construction, and scientific research have become increasingly important. The commonly used carbon dioxide gas-liquid phase change refrigeration is gradually difficult to meet the growing demand for refrigeration. The refrigeration system through solid sublimation refrigeration of carbon dioxide can realize a low-temperature environment lower than the triple point temperature of carbon dioxide -56.6 ° C, and has broad prospects in bio...

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Problems solved by technology

[0005] The object of the present invention is to solve the problems mentioned above, to provide a carbon dioxide solid sublimator that integrates the generation of carbon dioxide solid particles, the sublimation of carbon dioxide solids, and the recovery of residual energy. By coupling each process, the heat transfer coefficient and refrigeration capacity, improve system efficiency, and increase system stability

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