HYDAC Coolers Sales Hedec Company

HYDAC Coolers Sales Hedec Company
It has the advantages of high heat transfer efficiency, compact structure, small footprint, easy installation, and can be easily combined into any flow form according to different process requirements. Therefore, it is widely used in industrial fields such as petroleum, chemical, metallurgy, machinery, light industry, food, medicine, power, coating, heating, etc. In recent years, it has also been widely used in cooling water, pure water, and ultrapure water systems in the microelectronics industry. Due to the fact that chilled water (refrigerant fluid) and circulating cooling water (working fluid) are not in direct contact, they transfer the heat of the circulating cooling water to the chilled water through heat exchange fins. At this time, the temperature of the higher temperature circulating cooling water decreases to become a low-temperature fluid. When the fluid on both sides of the heat exchange fins is in constant temperature heat transfer,
It includes three processes:
1) The convective heat transfer process in which heat is transferred to the wall of the heat exchanger during the flow of circulating cooling water (working fluid);
2) The thermal conduction process through the heat exchanger;
3) The convective heat transfer from the heat exchanger wall on the other side to the chilled water (refrigerant fluid).
Differential pressure discharge: When impurities accumulate to a certain amount, the differential pressure signal between the cooling water inlet and outlet pipes is used to backwash the discharge. That is, the electric contact pressure gauge is connected to the control signal, and the control mechanism opens the electric discharge valve. The electric reducer will operate at a speed of 3-6 revolutions per minute, and be discharged into the cooling water outlet pipe through the discharge pipeline and discharge valve for about 5-10 minutes. When large debris appears and the filter cannot operate properly, the electric device should run in the opposite direction to flush the debris. If users need, they can set the discharge time. The cleaning and discharge time can be set within 0-99 hours, usually once every 12 hours. The time setting can be adjusted according to the water quality of the power plant. Start the electric reducer at a set time to reverse and open the drain valve, and then perform reverse backwash and drain in sequence. Until all chambers have completed backwashing, the electric device stops working, the electric backwash valve and the electric drain valve are closed, and all drain work is completed. The cooler cannot operate normally, resulting in deviations in the inlet and outlet parameters of each stage in the compressor, affecting the matching performance between stages, reducing the efficiency of the compressor, decreasing the processing gas volume, increasing the energy consumption of the unit, and causing a decline in the overall performance of the unit. Ultimately, the output of the air separation unit decreases, energy consumption increases, operating cycle shortens, and the range of variable operating conditions is reduced.
HYDAC Coolers Sales Hedec Company
When the cooling water flows through the metal surface, carbonate is generated. In addition, oxygen dissolved in cooling water can cause metal corrosion and form rust. Due to the generation of rust and scale, the heat transfer efficiency decreases. In severe cases, it is necessary to spray cooling water outside the shell. When scaling is severe, it can block the pipes and render the heat transfer effect ineffective. The research data shows that scale deposits have a significant impact on heat transfer losses. As the sediment increases, it leads to an increase in energy costs, saving energy, extending the service life of equipment, and saving production time and costs. *Traditional cleaning methods such as mechanical methods (scraping, brushing), high-pressure water, chemical cleaning (acid washing), etc. have encountered many problems when cleaning equipment: they cannot remove deposits such as scale, acid can corrode equipment and form leaks, residual acid can cause secondary corrosion or corrosion under scale on materials, ultimately leading to equipment replacement. In addition, the cleaning waste liquid is toxic and requires a large amount of funds for wastewater treatment.