Investigation of the effects of CO2 pre-cooling on the cooling capacity for cryogenic cooling in machining operations

IF 4.6 2区 工程技术 Q2 ENGINEERING, MANUFACTURING CIRP Journal of Manufacturing Science and Technology Pub Date : 2024-09-24 DOI:10.1016/j.cirpj.2024.09.007
Trixi Meier, Jan Harald Selzam, Andreas Röckelein, Nico Hanenkamp
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Abstract

Liquid carbon dioxide (LCO2) based cryogenic cooling has shown promising results in terms of wear reduction, productivity increase and energy efficiency when machining high-temperature materials. For process-safe use with low pulsation, CO2 must be fed in the liquid state to cool the process zone. LCO2 is typically stored in riser bottles in which gaseous and liquid aggregate state coexist. A preliminary study has already shown that the liquefied state of the CO2 can be stabilized by pre-cooling. In this paper, the influence of a heat exchanger as a pre-cooling system on the cooling capacity of the CO2 is investigated and the required energy consumption is compared to unstabilized CO2, pressure increased CO2 and compressed air. It has been shown that pre-cooling leads to a more energy-efficient increase in the cooling capacity of the CO2 compared to pressure increased CO2.
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二氧化碳预冷对机械加工中低温冷却能力影响的研究
在加工高温材料时,基于液态二氧化碳(LCO2)的低温冷却在减少磨损、提高生产率和能源效率方面显示出良好的效果。为保证加工安全和低脉动,二氧化碳必须以液态输入,以冷却加工区。液态二氧化碳通常储存在气态和液态共存的立管瓶中。初步研究表明,通过预冷可以稳定二氧化碳的液化状态。本文研究了作为预冷系统的热交换器对二氧化碳冷却能力的影响,并将所需能耗与未稳定的二氧化碳、压力增加的二氧化碳和压缩空气进行了比较。结果表明,与增压二氧化碳相比,预冷系统能更有效地提高二氧化碳的冷却能力。
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来源期刊
CIRP Journal of Manufacturing Science and Technology
CIRP Journal of Manufacturing Science and Technology Engineering-Industrial and Manufacturing Engineering
CiteScore
9.10
自引率
6.20%
发文量
166
审稿时长
63 days
期刊介绍: The CIRP Journal of Manufacturing Science and Technology (CIRP-JMST) publishes fundamental papers on manufacturing processes, production equipment and automation, product design, manufacturing systems and production organisations up to the level of the production networks, including all the related technical, human and economic factors. Preference is given to contributions describing research results whose feasibility has been demonstrated either in a laboratory or in the industrial praxis. Case studies and review papers on specific issues in manufacturing science and technology are equally encouraged.
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