Congratulations on our successful semi-anechoic chamber project for Dometic (Zhuhai).

Summary:

Dometic (Zhuhai) Technology Co., Ltd. was established in July 2001 and is affiliated with the Swedish DOMETIC Group. Its factory is located at No. 18 Jinhu Road, Sanzao Town, Jinwan District, Zhuhai City, covering an area of 168,268 square meters and currently has 1,300 employees. Dometic is a professional manufacturer of portable refrigeration products worldwide. The company is committed to the research, development, production and sales of semiconductor thermoelectric coolers, AC/DC inverter compressor refrigerators, absorption refrigerators and air conditioners for recreational vehicles. Our main customers include automobile manufacturers, yacht manufacturers, automobile parts importers, gift companies, large chain stores and product promotion companies. Among them, world-renowned automobile manufacturers such as BMW, Mercedes-Benz, Land Rover, MAN and Volvo have all chosen our company as a partner for built-in car refrigerators.

They chose to cooperate with Guangzhou Danpin Anechoic T&E Co., Ltd. to build acoustic laboratories (anechoic chambers, semi-anechoic chambers, fully anechoic chambers, semi-anechoic laboratories, fully anechoic laboratories, soundproof chambers, semi-soundproof chambers, fully soundproof chambers, semi-soundproof laboratories, fully soundproof laboratories, anechoic rooms, semi-anechoic rooms, fully anechoic rooms, acoustic laboratories, noise rooms, anti-noise rooms, soundproof rooms, quiet rooms, reverberation rooms, audition rooms, NVH laboratories, soundproof rooms, sound-insulated rooms, quiet rooms, airborne sound insulation rooms, impact sound insulation rooms). This is because Guangzhou Danpin Artificial Environment Technology Co., Ltd. is composed of a team of acoustic experts and professional engineers who have been engaged in various acoustic technology research at home and abroad for many years and have rich theoretical and practical experience. It has its own office building and factory, and an acoustic laboratory that meets the CNAS standards has been built in the factory, which can monitor the acoustic technical indicators of its own products and provide external acoustic testing services. Through the hard work and continuous innovation and development of the Danpin team, the acoustic laboratories designed, produced and installed by it have products with accurate technical indicators, being environmentally friendly, durable in quality, beautiful in appearance and high in technological content.

The semi-anechoic chamber is not only a special laboratory for acoustic testing but also an important part of the testing system. In fact, it is also one of the acoustic testing equipment, and its acoustic performance indicators directly affect the testing accuracy. For specific acoustic design, manufacturing, construction, installation and on-site actual measurement and acceptance introduction and other follow-up information, please pay attention to browsing the project cases on the official website of our company, or scan the QR code of our WeChat public service account to get free push notifications. For detailed information, please go to the download center on the official website of our company to download for free.

I. Procurement Content
Semi-anechoic chamber
II. Basis Standards
(1) GB/T 6882 "Acoustics - Determination of sound power level of noise sources - Precision methods for anechoic and hemi-anechoic rooms";
(2) ISO 3745 "Acoustics - Determination of sound power level of noise sources - Precision methods for anechoic and hemi-anechoic rooms";
(3) GB/T 4214.1 "Test method for noise of household and similar electrical appliances".
III. Main Indicators and Project Contents
1. Effective space of the semi-anechoic chamber
The net indoor dimensions after the construction of the semi-anechoic chamber are: length (L) × width (W) × height (H) = 5800 ± 100 × 5800 ± 100 × 4900 ± 100 (mm).
2. Background noise without working conditions
Calibrated by a third-party calibration institution: the indoor background noise Lgn(A) ≤ 15 dB(A) of the semi-anechoic chamber.
3. Background noise with working conditions
Calibrated by a third-party calibration institution: when the air-conditioning and ventilation system is turned on and there is no abnormal low-frequency noise source interference around, the background noise Lgn(A) ≤ 17 dB(A).
IV. Final Actual Measurement
1. Background noise without working conditions
Calibrated by a third-party calibration institution: the average indoor background noise of the semi-anechoic chamber: Lgn(A) ≤ 11.3 dB(A).
2. Background noise with working conditions
Calibrated by a third-party calibration institution: the average indoor background noise of the semi-anechoic chamber: Lgn(A) ≤ 14.1 dB(A).

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