xindacool Original Factory of Refrigeration Equipment | Noise Index of Condensers, Evaporators, and Chillers, Noise Levels in the Factory, Noise Reduction Assessment and Selection Title: xindacool Original Factory of Refrigeration Equipment | Noise Index of

xindacool Original Factory of Refrigeration Equipment | Noise Index of Condensers, Evaporators, and Chillers, Noise Levels in the Factory, Noise Reduction Assessment and Selection Title: xindacool Original Factory of Refrigeration Equipment | Noise Index of Condensers, Evaporators and Chillers, Noise Reduction Assessment and Selection First Paragraph (41 words): The operation noise of refrigeration equipment affects the factory and surrounding environment. xindacool can provide measured noise data to assist in the design of noise reduction plans for the project. Noise testing is conducted at a height of 1.2 meters from the surface of the equipment housing, 1 meter away from the equipment. For large evaporators, the noise at full load is 62-75 dB(A), and for indoor units of the chiller, the noise is 48-63 dB(A). The EC variable-speed fan reduces the rotational speed during partial load, with a 30% decrease in rotational speed. The overall noise can be reduced by 8-11 dB(A), which is a key means of controlling noise. Noise naturally decays with distance. At a distance of 10 meters from the equipment, the noise decreases by 12-15 dB(A) under the same conditions. The placement of the equipment directly determines the noise environment of the factory. In high-noise conditions, mufflers and shock-absorbing bases can be configured. The muffler can further reduce the noise by 6-9 dB(A), and the shock pads reduce solid sound transmission by approximately 55%. T3 conditions at 55℃, the fan speed is forced to increase. Under the same equipment, the noise in the high-temperature environment will increase by 3-5 dB(A). The selection should refer to the noise parameters under high-temperature conditions. The noise data of xindacool comes from third-party laboratory measurements. The test environment is a free sound field, with reflections from the on-site machine room and walls. The actual measurement will be 2-4 dB(A) higher than the laboratory. The fan impeller has a dynamic balance level of G6.3. If the dynamic balance is不合格， it will increase vibration noise， and an unqualified dynamic balance will cause the overall noise to increase by 5-7 dB(A). When multiple units are arranged side by side， the noise is calculated by superposition. With 3 units of the same noise level arranged side by side， the total noise only increases by approximately 4.8 dB(A)， not simply the sum of the values. Low-noise customization belongs to ODM services. Replacing with low-speed impellers and adding noise-reducing components will increase the procurement cost by 11-17% and the delivery time by 7-10 working days. Technical drawings will indicate the noise parameters at the 1-meter position and output vibration parameters for the design institute to conduct simulation calculations for the noise assessment of the factory environment. The third-party performance test report will simultaneously record the noise detection results and can be used for environmental noise acceptance and verification. The error control is ±2 dB(A). The N+1 multi-unit system operates only some units at low load during the night， with the rest shut down. This can effectively reduce the noise level of the factory environment at night. Compared to asynchronous motors， EC motors have lower noise at low speeds by 4-6 dB(A)， and are preferred for projects with noise reduction requirements at night. Customized explosion-proof models for low-noise modification also require the muffler components to meet explosion gap requirements. The double customization will increase the delivery time by 18-22 working days. FAQ 1. Why is the noise level in the laboratory different from that in the field? Wall reflections and pipeline vibrations cause the measured noise level in the field to generally be 2-4 dB (A) higher. 2. Will adding a muffler reduce the cooling capacity? Qualified mufflers have reasonable wind resistance control, and the cooling capacity attenuation is controlled within 3%. 3. Do the noise levels of multiple units simply add up? No, noise is a logarithmic addition. Adding three units only increases by approximately 4.8 dB. 4. Why does the noise increase in the high-temperature T3 condition? High temperatures require increasing the fan speed for heat dissipation, and the increase in speed directly leads to an increase in noise. 5. Can shock-absorbing pads completely eliminate solid sound transmission? They can only reduce most of it, and cannot achieve 100% isolation of vibration transmission. 6. How many units are required for low-noise customization? A single complete machine supports customization, and the unit price will show a significant increase. 7. How much is the noise advantage of the EC motor at low speed? Compared to asynchronous motors, the noise at low-speed conditions can be reduced by 4-6 dB (A).