Summary:
The Beijing Institute of Public Utilities Science (referred to as the "Research Institute") is a municipal public welfare scientific research institution, a professional R&D institution of the Beijing Gas Group Co., Ltd., and also an important technical support unit for government departments such as the Beijing Municipal Commission of Urban Management, the Beijing Municipal Science & Technology Commission, and the Beijing Municipal Administration for Market Regulation. The Research Institute has 28 scientific research and testing laboratories with a total area of over 3,500 square meters. It holds more than 20 qualifications issued by the state and Beijing, including CNAS, CMA, the professional engineering consulting unit for municipal public utilities engineering, the energy audit consulting agency, the technical support unit for the investigation (appraisal) of production safety accidents in Beijing, and the special equipment inspection and non-destructive testing qualifications. It has the ability to test and experiment on products such as gas, gas appliances, pressure regulating equipment, boilers, pressure pipelines, flow meters, valves, thermal insulation materials, and calorimeters.
They chose GZ DP Anechoic T&E Co., Ltd. to cooperate in building 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, reverberation-free chambers, semi-reverberation-free chambers, fully reverberation-free chambers, acoustic laboratories, noise chambers, noise rooms, soundproof rooms, silent rooms, reverberation chambers, audition rooms, NVH laboratories, soundproof enclosures, soundproof rooms, silent enclosures, 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 researches at home and abroad for many years and have rich theoretical and practical experience. It owns its own office building and factory, and an acoustic laboratory that meets the CNAS standard 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 brief introduction and other follow-up materials, please pay attention to browsing the project cases on the official website of our firm, or scan the QR code of the WeChat public service account of our enterprise to get free push notifications. For detailed materials, please go to the download center on the official website of our corporation to download for free.
I. Procurement Content
(1) Semi-anechoic chamber
II. Basis of Standards
(1) GB/T 6882 "Acoustics - Determination of Sound Power Level of Noise Sources - Precision Methods for Anechoic Rooms and Fully Anechoic Rooms";
(2) ISO 3745 "Acoustics - Determination of Sound Power Level of Noise Sources - Precision Methods for Anechoic Rooms and Fully Anechoic Rooms";
(3) GB/T 4214.1 "Test Method for Noise of Household and Similar Electrical Appliances".
III. Main Indicators and Project Contents
(1) The installation project construction plan and materials used for the semi-anechoic chamber shall be designed and installed by Party B in full;
(2) The effective internal clear dimensions of the semi-anechoic chamber installation project: 3.8m (L) * 2.8m (W) * 2.8m (H);
(3) Cut-off frequency: Fc ≤ 125Hz;
(4) The measured background noise value = 6.98dB (A).
IV. Acceptance Measurement Data
V. Completion Photos
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