The cooling system of an offset printing machine plays a crucial role in maintaining the balance of printing ink and ensuring high-quality prints. While imported offset machines are generally reliable, their performance can be affected by local printing materials, workshop conditions, and water quality. Over time, the heat exchanger inside the water tank tends to become fouled or clogged, leading to corrosion and reduced cooling efficiency. This not only affects print quality but also lowers production efficiency. Additionally, the hot air released from the cooling system increases the air-conditioning load in the workshop, making it harder to maintain a stable working environment. To address these issues, a technical upgrade was implemented as follows: (1) The original heat exchanger was repositioned below the liquid level within the water tank, and copper tubes were replaced with coil refrigeration systems. This design prevents fouling, reduces maintenance efforts, and makes cleaning more efficient. (2) A waste air conditioner outdoor unit (3P or 5P) was installed outside the workshop and used as a new heat exchanger. This helps improve heat dissipation and reduces the burden on internal cooling systems. (3) A three-way valve was added to regulate the flow of coolant. During summer, the outdoor unit dissipates heat outside the workshop, while in winter, the heat is retained within the space, effectively acting as a heating system. This dual-purpose setup enhances energy efficiency and improves the overall workshop climate. After the transformation, the water temperature in the tank could be consistently maintained below 10°C, and the alcohol concentration of the dampening solution was adjusted to the standard level of 10%. Issues such as dry plate and paste-up were significantly reduced, contributing to better print quality, lower operational costs, and a more comfortable working environment. This content is excerpted from the first issue of 2010, Printing and Printing , Packaging and Decoration , and features more articles from the same journal. For more information, please follow the journal section . Anti Wrinkle Filler,Anti Aging Filler,Biostimulatory Fillers,Eyes Dermal Fillers Rimless Industry Co.,Ltd. , https://www.rebornplla.com
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Offset printing machine water tank refrigeration system application innovation in one fell swoop
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