Congratulations on the smooth acceptance of the semi-anechoic chamber project we built for the Tea Research Institute of CAAS.
Summary: The Tea Research Institute of the Chinese Academy of Agricultural Sciences is the only national comprehensive tea scientific research institution in China. It is located in the West Lake Scenic Area in Hangzhou, Zhejiang Province. It was approved for preparation by the Science and Technology Planning Committee of the State Council in 1956 and was officially established on September 1, 1958. In June 2001, it also hung the sign of "Zhejiang Tea Research Institute". The institute has 9 business departments and 3 functional departments under it. It is mainly engaged in research and service work in fields such as basic and applied basic sciences of tea, scientific and technological industry development, tea quality and safety testing, industrial economy, organic tea certification, vocational skill training in the tea industry, and academic journal editing. Meanwhile, it widely conducts domestic and foreign cooperation and exchanges as well as high-level talent cultivation.
They chose to cooperate with GZ DP 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, soundproof rooms, silent rooms, reverberation rooms, audition rooms, NVH laboratories, soundproof rooms, sound-insulated rooms, silent 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 researches at home and abroad for many years and have rich theoretical and practical experience. It owns its own office buildings and factories, and there is an acoustic laboratory built in the factory that complies with the CNAS standards, which can monitor the acoustic technical indicators of its own products and provide external acoustic testing services. Through the hard work, 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, good-looking 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 brief introduction to on-site actual measurement and acceptance and other follow-up materials, please pay attention to browsing the project cases on the official website of our corporation or scan the QR code of the WeChat public service account of our corporation to get free push notifications. For detailed materials, please go to the download center on the official website of our corporation to download them for free.
I. Procurement Content
(1) Semi-anechoic chamber
II. Standards Followed
(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 all be designed and installed by Party B;
(2) The effective net dimensions, cutoff frequency and free field radius inside the semi-anechoic chamber installation project shall be implemented in accordance with the contract agreement between both parties.
IV. Acceptance Measurement Data
When the indoor air conditioning and ventilation in the semi-anechoic chamber are turned off, the semi-anechoic chamber is in a normal office environment in terms of environmental noise. When there is no abnormal interference around (such as ground breaking, piling, impact), the background noise of the semi-anechoic chamber Lgn(A) ≤ 11.9dB(A).
When the ventilation and air conditioning are turned on: the background noise of the semi-anechoic chamber Lgn(A) ≤ 13.7dB(A).
V. Completion Photos
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