{"id":5928,"date":"2026-08-26T14:47:05","date_gmt":"2026-08-26T06:47:05","guid":{"rendered":"https:\/\/www.bacintl.com\/?p=5928"},"modified":"2026-08-26T08:35:56","modified_gmt":"2026-08-26T00:35:56","slug":"selection-basis-installation-procedure-and-commissioning%e2%80%91acceptance-specification-for-air%e2%80%91supply-ceiling-diffuser","status":"publish","type":"post","link":"https:\/\/www.bacintl.com\/fr\/selection-basis-installation-procedure-and-commissioning\u2011acceptance-specification-for-air\u2011supply-ceiling-diffuser\/","title":{"rendered":"Selection Basis, Installation Procedure and Commissioning\u2011Acceptance Specification for Air\u2011Supply Ceiling Diffuser"},"content":{"rendered":"

\"\"<\/p>\n

1. Four Core Selection Principles: Grade Adaptation, Air Volume Matching, Working\u2011Condition Compatibility and Dimension Compliance<\/p>\n

    \n
  1. \n

    Cleanliness\u2011grade adaptation<\/strong>: Match filter modules and equipment types against designed clean\u2011room classification. For ISO\u202f5 (Class\u202f100) ultra\u2011high\u2011grade cleanrooms, adopt gel\u2011sealed air\u2011supply ceiling diffuser with H14 HEPA filter. For ISO\u202f6 (Class\u202f1\u202f000) cleanrooms, select gel\u2011sealed or premium paper\u2011separator diffuser with H13 HEPA filter. For ISO\u202f7 (Class\u202f10\u202f000) cleanrooms, deploy conventional integrated air\u2011supply ceiling diffuser fitted with H13 HEPA filter.<\/p>\n<\/li>\n

  2. \n

    Air\u2011volume parameter matching<\/strong>: Calculate total required air volume based on workshop area and air\u2011change rate, then determine the quantity of diffusers and rated air volume of each unit. Ensure sufficient air\u2011change rate and adequate air\u2011supply margin, avoiding insufficient or excessive air supply.<\/p>\n<\/li>\n

  3. \n

    Working\u2011condition adaptation<\/strong>: SUS304 stainless\u2011steel antibacterial type for aseptic pharmaceutical and high\u2011humidity corrosive environments; painted galvanized\u2011steel type for general\u2011purpose industrial clean\u2011room conditions; high\u2011temperature\u2011resistant filter modules for high\u2011temperature scenarios.<\/p>\n<\/li>\n

  4. \n

    Dimension specification adaptation<\/strong>: Choose standard or customized dimensions according to ceiling size and layout to achieve orderly arrangement and uniform air distribution.<\/p>\n<\/li>\n<\/ol>\n

    2. Standardized Installation Workflow: Pre\u2011Preparation, Lifting & Fixing, Duct Connection & Sealing, Module Assembly<\/p>\n

    \"\"<\/p>\n

      \n
    1. \n

      Pre\u2011preparation<\/strong>: Verify equipment specifications and visual integrity; clear ceiling installation zone; reserve duct interfaces and maintenance access openings; implement dust\u2011proof protection for construction activities.<\/p>\n<\/li>\n

    2. \n

      Lifting and fixing<\/strong>: Secure units with dedicated suspension lead screws, calibrate levelness with allowable deviation \u2264\u202f1\u202fmm\/m. Ensure firm installation without inclination or shaking and neat overall layout.<\/p>\n<\/li>\n

    3. \n

      Air\u2011duct connection<\/strong>: Precisely align supply\u2011air duct with unit air\u2011inlet. Apply flexible joints for vibration damping and noise reduction to eliminate air leakage risk. Seal joints thoroughly with zero gaps.<\/p>\n<\/li>\n

    4. \n

      Module assembly<\/strong>: Mount HEPA filters, flow\u2011equalizing membranes and protective grilles sequentially. Guarantee tight fitting without compression stress; achieve complete filter sealing; keep flow\u2011equalizing membranes wrinkle\u2011free and undamaged.<\/p>\n<\/li>\n<\/ol>\n

      3. System Commissioning after Installation Completion: Air\u2011Pressure, Air\u2011Velocity and Airflow\u2011Uniformity Tuning<\/p>\n

      Start supply\u2011air system under low\u2011speed mode, gradually ramp up air volume to rated operating condition and stabilize plenum chamber pressure for uniform pressure distribution. Measure air velocity at multiple workshop locations with an anemometer and adjust system air volume to keep velocity within standard range of 0.3\u20110.5\u202fm\/s<\/strong>. Perform multi\u2011point testing for airflow uniformity, ensuring velocity deviation \u2264\u202f10\u202f% across measuring points; eliminate local eddy currents and airflow dead zones.<\/p>\n

      4. Core Acceptance Criteria<\/p>\n

        \n
      1. \n

        Airtightness: Zero air leakage and hidden contamination risk.<\/p>\n<\/li>\n

      2. \n

        Air\u2011velocity uniformity: Uniform air supply throughout the zone without dead corners or turbulence.<\/p>\n<\/li>\n

      3. \n

        Filtration performance: Pass PAO filter integrity test; airborne particle concentration meets designed cleanliness classification.<\/p>\n<\/li>\n

      4. \n

        Operational stability: Free of abnormal noise; stable air pressure without air\u2011volume decay.<\/p>\n<\/li>\n<\/ol>\n

        \"\"<\/p>\n

        Formal commissioning is permitted only after all acceptance indicators pass. Appropriate selection, standardized installation and precise commissioning maximize uniform\u2011air\u2011supply performance of ceiling diffusers and support long\u2011term stable compliance of clean\u2011room environment.<\/p>","protected":false},"excerpt":{"rendered":"

        Proper selection, standardized installation and precise commissioning of air\u2011supply ceiling diffuser directly determine airflow uniformity, cleanliness compliance and operational stability of clean workshops. During clean\u2011room project implementation, improper model selection, non\u2011standard installation or inadequate commissioning will easily trigger engineering defects including uneven air supply, unstable air pressure, air\u2011leakage contamination and substandard cleanliness, thus disrupting regular production. Combined with clean\u2011room design & construction standards, this paper elaborates the selection basis, standardized installation workflow and commissioning\u2011acceptance specification of air\u2011supply ceiling diffuser, delivering professional technical guidance for project execution.<\/p>","protected":false},"author":3,"featured_media":5929,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[92],"tags":[],"class_list":["post-5928","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-technology"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.bacintl.com\/fr\/wp-json\/wp\/v2\/posts\/5928","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bacintl.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bacintl.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bacintl.com\/fr\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bacintl.com\/fr\/wp-json\/wp\/v2\/comments?post=5928"}],"version-history":[{"count":2,"href":"https:\/\/www.bacintl.com\/fr\/wp-json\/wp\/v2\/posts\/5928\/revisions"}],"predecessor-version":[{"id":5933,"href":"https:\/\/www.bacintl.com\/fr\/wp-json\/wp\/v2\/posts\/5928\/revisions\/5933"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bacintl.com\/fr\/wp-json\/wp\/v2\/media\/5929"}],"wp:attachment":[{"href":"https:\/\/www.bacintl.com\/fr\/wp-json\/wp\/v2\/media?parent=5928"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bacintl.com\/fr\/wp-json\/wp\/v2\/categories?post=5928"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bacintl.com\/fr\/wp-json\/wp\/v2\/tags?post=5928"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}