During the operation of industrial chillers, various troubles are often encountered. Below, we have compiled some common issues for your reference.
What is the cause of a screw-type chill water unit showing a low differential pressure between high and low pressure?
When the ambient temperature is very low, the temperature difference between the semi-hermetic refrigerant water and the cooling water is minimal, resulting in a small pressure difference between intake and exhaust, which can lead to an issue of excessively low high-low pressure differential.
2. Does the low-temperature chiller fall under static equipment or dynamic equipment?
The equipment is broadly categorized into dynamic equipment and static equipment. Dynamic equipment refers to rotating machinery driven by a prime mover, such as pumps, compressors, fans, motors, as well as molding machines, packaging machines, mixers, etc. Static equipment mainly includes furnace, tower, reaction equipment, storage tanks, and heat exchange equipment, among others. Among them, air coolers are particularly unique; the air-cooled fans are managed as dynamic equipment, while the air-cooled tube bundles are managed as static equipment. Since the chiller contains components like pumps, compressors, fans, and motors, it is classified as dynamic equipment.
Where can one find chillers that produce chilled water and cooling water using water-cooled screw chillers?
The unit connected to the water tower is a condenser, and the circulating water there is cooling water. The evaporator produces chilled water, which is typically insulated. Moreover, the evaporator is located above the condenser and is wider than the condenser.
What are the possible causes for the evaporation temperature of a refrigerator and the cold water outlet temperature to differ by approximately 10 degrees?
① Overheating return gas temperature (capillary or throttle valve issue)
② The condenser has poor heat dissipation performance.
③ Insufficient refrigerant quantity in the refrigeration system.
