Research on Heat Generation Law and Cooling System Performance of Hydraulic System of Combined Machine Tool

Qinguo Zhang, Xiaojian Liu (), Zheming Tong () and Zhewu Cheng
Additional contact information
Qinguo Zhang: Ningbo Innovation Center, Zhejiang University, Ningbo 315100, China
Xiaojian Liu: Ningbo Innovation Center, Zhejiang University, Ningbo 315100, China
Zheming Tong: School of Mechanical Engineering, Zhejiang University, Hangzhou 310013, China
Zhewu Cheng: Ningbo Innovation Center, Zhejiang University, Ningbo 315100, China

Energies, 2023, vol. 16, issue 21, 1-16

Abstract: After the machine tool works continuously, the temperature of the hydraulic system continues to rise, which affects the work efficiency of the machine tool. Therefore, it is very important to control the temperature within a reasonable range. This paper proposes an improved scheme to replace a single fan with dual fans to improve the heat dissipation capacity of the radiator. Starting from the principle of heat exchange between oil and air, the relationship between the oil temperature and the wind speed on the face of the heat exchanger is derived, and the theoretical basis of the cooling system is given. Combined with logic control, the fan has the advantages of fast action, high efficiency and low energy consumption, which ensures the efficient and reliable operation of the machine tool. A one-dimensional simulation model of the thermal hydraulic system is established, and the heat generation and heat dissipation power of each element are calculated. Among them, the heat dissipation of the radiator is the largest, accounting for about 55% of the total heat dissipation. The experimental results show that the optimal fan speed is 3200 r/min and the flow rate is 0.2 m 3 /s at 26 °C. The thermal balance temperature of the hydraulic system is reduced from the original 65 °C to 58 °C, and its cooling capacity meets the requirements of a high-altitude and high-temperature environment.

Keywords: machine tool; hydraulic system; heat generation mechanism; heat balance; control strategy (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/16/21/7322/pdf (application/pdf)
https://www.mdpi.com/1996-1073/16/21/7322/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:16:y:2023:i:21:p:7322-:d:1269663

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().