A r a ş t ı r m a Standards Room Occupancy Only People STANDARD 20 ¾Smokers Calculation Person/m2 Usm2 Usm2 Usm2 Class A B C A B C A B C prENV 1752 @6) 1.0 0.7 0.4 2.0 1 .4 0.8 DiN 1946 @4) 1 . 1 ASHRAE 62 ([ev. 96) 0.65* Single office 0. 1 (1 .15) ASHRAE 62-89 1.0 NKB-61 (91) 1 .05 CIBSE-Guide A ([ev. 93) 0.8 prENV 1752 0.7 0.5 0.3 1.7 1.2 0.7 2.4 1.7 1.0 DiN 1946 1.7 1.7 ASHRAE 62 ([ev. 96) 0.56* 1.1* Londscaped office 0.07 (1.06) (1.6) ASHRAE 62-89 0.7 0.7 NKB-61 (91) 0.95 1.4 CIBSE-Guide A ([ev. 93) 0.56 1 . 1 prENV 1752 5.0 3.5 2.0 6.0 4.2 2.4 1.0 7.8 4.4 DiN 1946 2.8 5.4 5.4 ASHRAE 62 ([ev. 96) 1 .5* 4.4* Conference room 0.5 (4.0) (8.2) ASHRAE 62-89 5.0 5.0 NKB-61 (91) 3.5 10.0 CIBSE-Guide A (rev. 93) 4.0 8.0 prENV 1752 0.5 3.5 2.0 6.0 4.2 2.4 DiN 1946 4. 2 ASHRAE 62 (rev. 96) 2.1* Classroom 0.5 (4.6) ASHRAE 62-89 4.0 NKB-61 (91) 3.5 CIBSE-Guide A (rev. 93) 4.0 Table 6. Minimum ventilation requirements in DiN 1946, ASHRAE 62 (rev. 96), ASHRAE 62-89, CIBSE-Guide A (rev. 93), NKB-61. • ASHRAE 62 ([ev. 96) gi-.es the minimums for adapted persons. The number in parentheses is the ı.alue for unadapted. dure in the prescriptive text or in an informative appendix. in this procedure, the required ventilation rate is calculated on a comfort basis (perceived odor and/or irritation) and on a health basis. The highest calculated value, which in most cases will be the comfort value, is then used as the required minimum ventilation rate. The basis for the calculation in all documents is based on a mass balance calculation. The requıred ventilation rate is calculated as: Where G C, co G Q=--- (C.-C ). E l O V = Total emission rate = Concentration limit = Concentration in outside air Note, Divide 1/s by. 47 /9 to obtain f/min(cfm) L/s mg/s mg,ıl mg,ıl Ev = Ventilation effectiveness Knowledge from the health perspective is limited about emission rates (G) and concentration limits CC). in the future, more knowledge and data will be available from ongoing research projects and from testing by manufactürers of building materials and furnishings. The comfort calculation is not the same in all of the listed documents. The olf-decipol method is the basis forthe calculation in prENV 1 752, DiN 1946 and in the CIBSE proposal. The comfort calculation in ASHRAE 62-1989R is based on the addition ofa ventilation rate per person (a function of adaptation and activity level), and a ventilation rate for the building (Rb values in Table 4). in ASHRAE 62-1 989R, air cleaning may be taken into account in the analytical procedure. Calculating the required amount of outside air is rather complicated in multiple space systems with recirculation and an air cleaner in the return air or supplyair. 107 ' 1
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