🔬 Laboratory — ikuku cleanroom na iguzosi ike nke ihe nlele Ụdị dị ndụ
Ị bụ onye njikwa lab. Suite aseptic ISO 7 nke 75 m³ na-enweta ikuku site na ngwa njikwa ikuku site na ihe nzacha HEPA; ndị mmadụ na-ekupụ obere ihe, ọnụ ụzọ na-ahapụ ikuku ụzọ ije banye, ma fume hood na-adọta mwepụ kwụsiri ike nke nwere ike ịtọpụ nrụgide karịrị nke ụlọ. N'ime ụzọ ije, freezer ultra-low na-edebe rack anọ nke ihe nlele na −80 °C. Nkeji ise ọ bụla ụdị ahụ na-edozi obere ihe dị n'ime ụlọ, mmiri ikuku site n'oghere ọnụ ụzọ na okpomọkụ na-asọ n'ime freezer. Simulation maka agụmakwụkwọ naanị — ọ bụghị ndụmọdụ GMP, nrube isi ma ọ bụ ahụike.
Ihe ị ga-amụta
Ihe mere ụlọ jikọtara nke ọma ji edozi na C = G/Q ma na-agbake dị ka e^(−N·t): ndị mmadụ na-ekpebi ọkwa, mgbanwe ikuku na-ekpebi ọsọ.
Otu pressure cascade si arụ ọrụ n'ezie: ọdịiche n'etiti nnye na mwepụ, iwu square site n'oghere ọnụ ụzọ, na ihe ọnụ ụzọ mepere emepe na mwepụ hood kwụsiri ike na-eme ya.
Otú ngwa ngwa freezer −80 °C dara ada si ekpo (iwu Newton), na ihe mere e ji azọpụta ihe nlele site n'ime ihe na ịdọ aka na ntị, ọ bụghị na oke.
Simulator
Oge 0 min
✓Rack na ma ọ bụ n'okpuru −70 °C
!Rack n'etiti −70 na −60 °C
⚠Rack n'elu −60 °C (njigharị)
◍Onye n'ime coverall cleanroom
○Onye n'ime uwe lab
•Obere ihe dị n'ikuku (ogo logarithm)
❄Compressor na-agba ọsọ / hood na-arụ ọrụ
✕Compressor kwụsịrị / hood na standby
Njikwa
Ikuku a na-enye site na ihe nzacha HEPA dị n'elu ụlọ. Ikuku karịa na-eme ka obere ihe gbazee ma pụọ ngwa ngwa, mana ike fan na-ebili na kubu nke ikuku. Otu ngwa mebiri emebi enweghị ike inye ihe ị rịọrọ.
Onye ọ bụla na-ekupụ obere ihe; onye ọ bụla na-abanye ma ọ bụ pụọ na-emepe ọnụ ụzọ. Ndị mmadụ ole na ole pụtara ọrụ ole na ole e mere.
Coverall cleanroom na-ebelata ọkara nke obere ihe ≥0.5 µm mmadụ na-ekupụ ma e tụnyere uwe lab n'elu uwe n'ime ụlọ. Ịgbanwe na-ewe ihe dị ka nkeji 10.
Otu ọnụ ụzọ airlock n'otu oge na mmepe dị mkpụmkpụ: ihe dị ka 10 s na 0.5 m³ nke ikuku ụzọ ije maka mmepe ọ bụla kama 40 s na 2 m³. Ichere n'airlock na-efu obere oge.
Mwepụ ahụ na-eso nnye wepụ ọdịiche a, nke na-asọpụ site n'oghere ọnụ ụzọ ma na-edebe ụlọ n'elu ụzọ ije. Mwepụ enweghị ike ịda n'okpuru mwepụ nke hood na kabinet nchekwa n'onwe ha.
Na-ebelata mwepụ ikuku kwụsiri ike site na 1100 ruo 500 m³/h, na-ahapụ ikuku maka nrụgide karịrị nke ụlọ. Ọrụ chọrọ hood na-echere.
Na-akwụsị mmepe oge niile na nke ịchọ mara. Mmepe ọ bụla na-edochi ikuku kabinet na ikuku ụlọ.
Na-ebuga rack n'ime slot efu nke freezer nkwado mgbe oge ịkpọ ndị ọrụ gachara (ọ na-adị ogologo n'abalị). Slot ndị ahụ bụ nchekwa mberede nke ụlọ ahụ, a na-ahapụ ha naanị maka freezer nwere nsogbu ma ọ bụ nọ na alarm — a na-ajụ arịrịọ mgbe ọ ka na-ejide −80 °C. Rack ọ bụla na-anọ ihe dị ka nkeji abụọ n'ikuku ụlọ n'ụzọ.
Na-ekechi rack ndị fọdụrụ n'ime freezer n'igbe nwere mkpuchi na dry ice (10 kg maka rack ọ bụla, dị ka ngwa na-ezu). Igbe na-ejide −78.5 °C ọ bụọ ice fọdụrụ.
Ihe ngosi
Klaasị ụlọ (ISO 14644-1, ≥0.5 µm)
6.86
ịdọ aka ná ntị
Ọdịiche nrụgide na ụzọ ije (nkezi oge)
12.4Pa
nkịtị
Rack ihe nlele kachasị ọkụ
-80.0°C
nkịtị
Njigharị ihe nlele karịrị −60 °C (rack-nkeji)
0min
nkịtị
Obere ihe ≥0.5 µm
256 k/m³
Mgbanwe ikuku e nyere
20 1/h
Ike fan nnye
0.45 kW
Ndị mmadụ n'ime suite
3
Ọrụ emere megide atụmatụ
0 % · dị oke egwu
Ọdịiche nrụgide, ọnụ ụzọ mechiri
12.4 Pa
Mmepe ọnụ ụzọ n'oge a
0
Okpomọkụ kabinet freezer
-80.0 °C
Dry ice fọdụrụ
20.0 kg
Rack ka nọ n'ime freezer
4
Ọnọdụ
Ọnọdụ nsogbu
Ọkwa 1 · Laghachi na klaasị tupu nzọụkwụ aseptic
Ọ bụ 08:00. N'abalị suite na-agba ọsọ na setback na-echekwa ume na mgbanwe ikuku 5 kwa awa na hood na standby, ma onye ọrụ na-eyi uwe n'okporo ụzọ ka na-emecha ọrụ n'ime: ihe a na-agụ na-egosi ihe dị ka obere ihe nde 3 maka m³. Mmadụ isii na-eyi uwe lab na-akwado. N'elekere 08:30 otu ndị mmadụ atọ na-amalite nzọụkwụ aseptic chọrọ ka ụlọ bụrụ ISO 7 ma ọ bụ nke ka mma ruo 10:00. Debe otu ahụ n'ime ụlọ ma debe ụgwọ fan n'ihe ezi uche.
Ụlọ na ISO 7 ma ọ bụ nke ka mma n'oge nzọụkwụ ahụ niile
Opekata mpe mmadụ atọ n'ime suite n'oge nzọụkwụ ahụ
Nkezi ike fan nnye ≤ 0.6 kW
Ọkwa 2 · Freezer mebiri n'abalị
Ọ bụ elekere 21:00, ị nọkwa na ọrụ oku. Freezer −80 °C na-ejide rack anọ nke ihe nlele a na-apụghị ịnọchi. N'ihe dị ka elekere 22:00 compressor ya na-akwụsị; onye teknishien ọrụ nwere ike ịbịa naanị n'elekere 07:30. Freezer nkwado nwere ohere maka rack abụọ — nchekwa mberede nke ụlọ ahụ, a na-ahapụ ya naanị maka freezer nwere nsogbu ma ọ bụ nọ na alarm — e nwekwara 20 kg dry ice n'ebe ahụ, zuru maka igbe abụọ. Ihe ọ bụla ị rịọrọ, mmadụ ga-ebu ụzọ bịa: ihe dị ka nkeji 30 n'abalị. Ndị nche na-agagharị na-elegharị anya n'ime freezer site n'oge ruo n'oge. SOP nke ụlọ nyocha kwuru na ọ dịghị ihe nlele ga-agafe −60 °C, otu ahụ na-arịọkwa oghere nchekwa: rack agaghị adị ọkụ karịa −68 °C.
Enweghị rack n'elu −60 °C abalị niile
Enweghị nkeji njigharị na njedebe
Rack anaghị adị ọkụ karịa −68 °C (oghere nchekwa)
Ọkwa 3 · Ngwa ikuku adịghị ike, ụlọ jupụtara
Oge ọzụzụ aka nke awa anọ nwere mmadụ asaa n'uwe lab n'ime suite na ndị ọbịa na-abata n'ụzọ ije n'enweghị nkwụsị. Nkeji iri n'ime ya, fan nnye na-amalite ịda: ọ nwere ike ịnye naanị 40 % nke ikike ya (mgbanwe ikuku 16 kwa awa) ruo mgbe a rụziri echi. Fume hood na-arụ ọrụ ma na-adọta 1100 m³/h nke mwepụ kwụsiri ike. Debe ụlọ na ISO 7, debe opekata mpe 10 Pa n'elu ụzọ ije, ma mezuo ọrụ a haziri ahazi.
Ụlọ na ISO 7 ma ọ bụ nke ka mma
Nkezi ọdịiche nrụgide ≥ 10 Pa
Ọrụ a haziri emechara
Ntọala — ụdị dị n'azụ ọnụọgụ
Mmekọrịta ọ bụla simulator na-eji, na isi mmalite ya. Ihe na-agbanwe agbanwe akara dị ka echiche bụ nhazi ngosi.
ISO 14644-1 na-edobe oke klaasị maka nha obere ihe ọ bụla; otu ọkwa klaasị bụ ihe ugboro iri. Na 0.5 µm, ISO 7 na-ekwe obere ihe 352,000 maka mita cubic.
Cn = 10^N·(0.1/D)^2.08 ⇒ N = log10(C) + 2.08·log10(D/0.1); ISO 7 at 0.5 µm = 352 000 /m³, ISO 5 = 3 520 /m³[1]
N'ụlọ jikọtara nke ọma obere ihe ọ bụla na-abata ma ọ bụ a na-ekupụ na-agbaze site na ikuku nnye ma bupụ ya; ọkwa na-edozi ebe mmepụta hà nhata mwepụ, C = G/Q.
V·dC/dt = G + Q_s·(1−η)·(f·C_out + (1−f)·C) + (Q_in + Q_door)·C_corr − (Q_s + Q_in + Q_door)·C (exact solution per 5-min tick); steady C = G/Q[5][7]
Mgbe nsogbu gasịrị oke na-ada exponentially n'ọsọ mgbanwe ikuku: mbelata ugboro 100 na-ewe ln(100)/N awa, nke ule nlọghachi ISO 14644-3 na-atụ.
Ndị mmadụ bụ isi mmalite bụ isi. Nkezi a tụrụ maka ≥0.5 µm: ihe dị ka nde 2.1 kwa nkeji n'uwe n'ime ụlọ, ihe dị ka nde 1.0 n'uwe cleanroom; onye ọ bụla na oge ọ bụla dị iche.
G = Σ people e·exp(0.3·z − 0.045), z ~ N(0,1); e = 35 500 /s (lab coat over indoor clothing; measured for indoor clothing), 17 000 /s (cleanroom coverall), ≥ 0.5 µm[4]Echiche: nha ụlọ, ikike AHU, mwepụ ikuku kwụsiri ike, mpaghara ntapu, oge ọnụ ụzọ na olu ikuku a gbanwere, ike fan, mkpuchi freezer na nha compressor, ike rack ijide okpomọkụ, ikpughe n'oge njikwa, ịhapụ slot freezer nkwado naanị n'oge mberede na oke SOP −60 °C bụ ọnụ ahịa ihe atụ maka ụlọ nyocha nkịtị; iwu physics na ọnụego mgbasa e bipụtara dị ka e kwuru.
Ikuku e wepụrụ na-asọpụ site n'oghere ọnụ ụzọ; nrụgide achọrọ iji kwaa ya gafee na-eri elu n'ogo nke square nke mmiri na-asọ. Ọ bụrụ na mwepụ kwụsiri ike na-ewere karịa ihe nnye hapụrụ, ụlọ na-aghọ negative ma na-adọta ikuku ụzọ ije.
Q_off = Q_s − max(E_fixed, Q_s − offset); ΔP = ρ/2·(Q_off/(C_d·A))², C_d = 0.61, A = 0.02 m²; ΔP_avg = ΔP·(1 − time doors open)[6][3][5]Echiche: nha ụlọ, ikike AHU, mwepụ ikuku kwụsiri ike, mpaghara ntapu, oge ọnụ ụzọ na olu ikuku a gbanwere, ike fan, mkpuchi freezer na nha compressor, ike rack ijide okpomọkụ, ikpughe n'oge njikwa, ịhapụ slot freezer nkwado naanị n'oge mberede na oke SOP −60 °C bụ ọnụ ahịa ihe atụ maka ụlọ nyocha nkịtị; iwu physics na ọnụego mgbasa e bipụtara dị ka e kwuru.
Ọnụ ụzọ mepere emepe enweghị ọdịiche nrụgide; mmepe ọ bụla na-agbanwe ụfọdụ ikuku ụzọ ije n'ime ụlọ. Mmepe dị mkpụmkpụ site na airlock na-agbanwe ọtụtụ pere mpe.
openings ~ Poisson((1·people + traffic)·Δt) + people in/out; per opening 40 s and 2 m³ of corridor air exchanged (10 s, 0.5 m³ with airlock discipline)[3][5]Echiche: nha ụlọ, ikike AHU, mwepụ ikuku kwụsiri ike, mpaghara ntapu, oge ọnụ ụzọ na olu ikuku a gbanwere, ike fan, mkpuchi freezer na nha compressor, ike rack ijide okpomọkụ, ikpughe n'oge njikwa, ịhapụ slot freezer nkwado naanị n'oge mberede na oke SOP −60 °C bụ ọnụ ahịa ihe atụ maka ụlọ nyocha nkịtị; iwu physics na ọnụego mgbasa e bipụtara dị ka e kwuru.
Ike fan na-eri elu na kubu nke ikuku: ịmụba mgbanwe ikuku ugboro abụọ na-ewe ihe dị ka ike ugboro asatọ.
P = 0.45 kW·(Q_s / 1500 m³/h)³[8]Echiche: nha ụlọ, ikike AHU, mwepụ ikuku kwụsiri ike, mpaghara ntapu, oge ọnụ ụzọ na olu ikuku a gbanwere, ike fan, mkpuchi freezer na nha compressor, ike rack ijide okpomọkụ, ikpughe n'oge njikwa, ịhapụ slot freezer nkwado naanị n'oge mberede na oke SOP −60 °C bụ ọnụ ahịa ihe atụ maka ụlọ nyocha nkịtị; iwu physics na ọnụego mgbasa e bipụtara dị ka e kwuru.
Freezer na-enweghị compressor ya na-ekpo dị ka ahụ ọ bụla jikọtara: ngwa ngwa na mbụ, mgbe ahụ nwayọọ ka ọ na-abịaru nso okpomọkụ ụlọ. Oge-ntụpụ τ = C/UA na-edozi elekere.
C·dT/dt = UA·(T_amb − T) + Q_door − Q_comp; T(t) = T_amb + (T₀ − T_amb)·e^(−t/τ), τ = C/UA = 20 h; −80 → −60 °C in τ·ln(102/82) ≈ 4.4 h[9]Echiche: nha ụlọ, ikike AHU, mwepụ ikuku kwụsiri ike, mpaghara ntapu, oge ọnụ ụzọ na olu ikuku a gbanwere, ike fan, mkpuchi freezer na nha compressor, ike rack ijide okpomọkụ, ikpughe n'oge njikwa, ịhapụ slot freezer nkwado naanị n'oge mberede na oke SOP −60 °C bụ ọnụ ahịa ihe atụ maka ụlọ nyocha nkịtị; iwu physics na ọnụego mgbasa e bipụtara dị ka e kwuru.
Mmepe ọ bụla na-edochi ikuku kabinet jụrụ na ikuku ụlọ ọkụ, mmiri; okpomọkụ ya na frost ọ hapụrụ na-ekpo ihe dị n'ime.
Q_door = 2·ρ·V_cab·c_p·(T_amb − T) (cabinet air replaced, ×2 for moisture and frost); V_cab = 0.7 m³ → ≈ 1.2 K per opening at −80 °C[9]Echiche: nha ụlọ, ikike AHU, mwepụ ikuku kwụsiri ike, mpaghara ntapu, oge ọnụ ụzọ na olu ikuku a gbanwere, ike fan, mkpuchi freezer na nha compressor, ike rack ijide okpomọkụ, ikpughe n'oge njikwa, ịhapụ slot freezer nkwado naanị n'oge mberede na oke SOP −60 °C bụ ọnụ ahịa ihe atụ maka ụlọ nyocha nkịtị; iwu physics na ọnụego mgbasa e bipụtara dị ka e kwuru.
Ihe nlele na-eso gburugburu ha na igbu oge; iwere rack n'ikuku ụlọ nkeji ole na ole na-efu ọtụtụ ogo.
T_rack ← lag(T_rack, T_surroundings, τ = 1 h); handling: 2 min in room air with τ = 0.5 h (≈ +6 K from −75 °C); excursion = Σ racks minutes above −60 °C[9][11]Echiche: nha ụlọ, ikike AHU, mwepụ ikuku kwụsiri ike, mpaghara ntapu, oge ọnụ ụzọ na olu ikuku a gbanwere, ike fan, mkpuchi freezer na nha compressor, ike rack ijide okpomọkụ, ikpughe n'oge njikwa, ịhapụ slot freezer nkwado naanị n'oge mberede na oke SOP −60 °C bụ ọnụ ahịa ihe atụ maka ụlọ nyocha nkịtị; iwu physics na ọnụego mgbasa e bipụtara dị ka e kwuru.
Dry ice na-agbaze n'ikuku na −78.5 °C ma na-ewere ihe dị ka 573 kJ maka kilogram ọ bụla: igbe na-anọ n'okpomọkụ ahụ ruo mgbe ice agwụchara.
chest at −78.5 °C while ice remains; dm/dt = −(UA_chest·(T_amb + 78.5) + rack heat)/573 kJ/kg[10][11]Echiche: nha ụlọ, ikike AHU, mwepụ ikuku kwụsiri ike, mpaghara ntapu, oge ọnụ ụzọ na olu ikuku a gbanwere, ike fan, mkpuchi freezer na nha compressor, ike rack ijide okpomọkụ, ikpughe n'oge njikwa, ịhapụ slot freezer nkwado naanị n'oge mberede na oke SOP −60 °C bụ ọnụ ahịa ihe atụ maka ụlọ nyocha nkịtị; iwu physics na ọnụego mgbasa e bipụtara dị ka e kwuru.
Ihe ndị ọzọ na-agbanweghị nke ụdị ahụ na-eji.
room 75 m³, AHU ≤ 40 air changes/h × health · HEPA 99.95 %, 20 % outdoor air at 35·10⁶ /m³ · corridor 2·10⁶ /m³ · fixed exhaust 1100 m³/h (hood in use) / 500 m³/h (standby) · gowning change 10 min · 1 door trip per person-hour · work × 0.8 with the hood in standby, × 0.95 with airlock discipline · freezer UA 2 W/K, compressor 600 W, alarm −70 °C, SOP limit −60 °C · 4 racks of 15 kJ/K · backup freezer −80 °C, its free slots released only for a freezer in fault or alarm (emergency reserve) · 10 kg dry ice per rack, chest UA 0.25 W/KEchiche: nha ụlọ, ikike AHU, mwepụ ikuku kwụsiri ike, mpaghara ntapu, oge ọnụ ụzọ na olu ikuku a gbanwere, ike fan, mkpuchi freezer na nha compressor, ike rack ijide okpomọkụ, ikpughe n'oge njikwa, ịhapụ slot freezer nkwado naanị n'oge mberede na oke SOP −60 °C bụ ọnụ ahịa ihe atụ maka ụlọ nyocha nkịtị; iwu physics na ọnụego mgbasa e bipụtara dị ka e kwuru.
Enweghị usoro: ihe mmepụta mulberry32 nwere mkpụrụ; nkesa ejiri — uniform, exponential (inverse CDF), normal (Box–Muller), Poisson (Knuth). A na-egosi mkpụrụ ma nwee ike ikekọrịta ya.
W. Whyte — Cleanroom Technology: Fundamentals of Design, Testing and Operation, 2nd ed. (well-mixed dilution C = G/Q, decay and recovery, pressure cascades, door openings) — Wiley, 2010
ASHRAE Handbook — Fundamentals, ch. 16 Ventilation and Infiltration (flow through openings Q = C_d·A·√(2ΔP/ρ)) — ASHRAE, 2021
EN 1822-1:2019 High efficiency air filters (EPA, HEPA and ULPA) — Part 1: Classification (H13 ≥ 99.95 % at MPPS) — CEN, 2019
F. P. Incropera, D. P. DeWitt et al. — Fundamentals of Heat and Mass Transfer, 7th ed., §5.1–5.3 lumped capacitance (Newton cooling, τ = ρVc/hA) — Wiley, 2011
ISBER Best Practices: Recommendations for Repositories, 5th ed. (storage equipment monitoring and alarms, backup storage capacity, emergency plans) — International Society for Biological and Environmental Repositories, 2023