Betekenis van:
transmittance

transmittance
Zelfstandig naamwoord
    • the fraction of radiant energy that passes through a substance

    Synoniemen

    Hyperoniemen


    Voorbeeldzinnen

    1. Transmittance
    2. Smoke transmittance
    3. τ transmittance, %
    4. Since the basic measurement unit of all opacimeters is transmittance, the smoke values must be converted from transmittance (τ) to the light absorption coefficient (k) as follows:
    5. having a total transmittance of more than 55 % but not more than 65 %, determined by standard method JIS K7105 related to ASTM D1003 and
    6. ≤ 50 m2and Peak SPR ≤ 0,25 m2/ss1a s1 and transmittance in accordance with EN 61034-2 ≥ 80 %s1b s1 and transmittance in accordance with EN 61034-2 ≥ 60 % < 80 %s2 TSP1200 ≤ 400 m2and Peak SPR ≤ 1,5 m2/ss3 not s1 or s2
    7. Three neutral density filters of known transmittance, which must meet the requirements of annex 4, appendix 4, paragraph 5.2.5., must be introduced to the opacimeter and the value recorded.
    8. The transmittance of a 1 % solution in water determined in a 1 cm cell at 430 nm with a suitable spectrophotometer using water as a reference, is not less than 0,95, equivalent to an absorbance of not more than approximately 0,022.
    9. The transmittance of a 1 % solution in 2N hydrochloric acid, determined in a 1-cm cell at 430 nm with a suitable spectrophotometer, using 2N hydrochloric acid as a reference, is not less than 0,95, equivalent to an absorbance of not more than approximately 0,022
    10. The transmittance of a 1 % solution in water determined in a 1 cm cell at 430 nm with a suitable spectrophotometer using water as a reference, is not less than 0,95, equivalent to an absorbance of not more than approximately 0,022
    11. All windows in heated and/or air conditioned rooms and common areas added or renovated after the acquisition of the Community eco-label shall comply with Directive 2002/91/EC (Articles 4, 5 and 6) and Council Directive 89/106/EEC [7] and relative national technical regulations for their implementation.Assessment and verification: The applicant shall provide a declaration from a professional technician indicating compliance with this criterion supplying the thermal transmittance values (U-value).
    12. All windows in heated and/or air conditioned rooms and common areas added or renovated after the acquisition of the Community eco-label shall comply with Directive 2002/91/EC (Articles 4, 5 and 6) and Council Directive 89/106/EEC [7] and relative national technical regulations for their implementationAssessment and verification: The applicant shall provide a declaration from a professional technician indicating compliance with this criterion supplying the thermal transmittance values (U-value).
    13. Time interval between successive smoke data (= 1/sampling rate) Δti s Time interval for instantaneous CFV flow τ % Smoke transmittance V0 m3/rev PDP volume flow rate at actual conditions W — Wobbe index Wact kWh Actual cycle work of ETC Wref kWh Reference cycle work of ETC WF — Weighting factor WFE — Effective weighting factor X0 m3/rev Calibration function of PDP volume flow rate Yi m-1 1 s Bessel averaged smoke value
    14. All windows in heated and/or air conditioned rooms and common areas added or renovated after the acquisition of the Community eco-label shall comply with Directive 2002/91/EC (Articles 4, 5 and 6) and Council Directive 89/106/EEC [7] and relative national technical regulations for their implementationAssessment and verification: The applicant shall provide a declaration from a professional technician indicating compliance with this criterion supplying the thermal transmittance values (U-value). For windows complying with Directive 2002/91/EC, the applicant shall provide the energy certification or where not available in the national implementation system, a declaration from the constructor.