Waxaad maamushaa meesha raritaanka iyo kaydka qaboojinta ee xarun qaybinta alaabta u nugul heerkulka sida tallaalada. Albaab kasta oo furan wuxuu gelinayaa hawo diiran, gaadhi kasta oo safka ku jira waa rar sugaya, badeecaduna waa inay ku sii jirtaa inta u dhexeysa 2 °C iyo 8 °C.
Albaab kasta oo shaqaale leh wuxuu dejiyaa hal gaadhi mar keliya — wuxuuna gelinayaa hawo diiran inta uu furan yahay.
Gudaha xadka 2–8 °C. Hoose waxay bixisaa daahid badan laakiin tamar badan ayay isticmaashaa.
Laba compressor, mid walba 40 kW qaboojin.
Waxay yareysaa hawada diiran ee dhex gasha albaabada furan; marawaxadaha waxay isticmaalaan awood yar.
Wuxuu gaadhiga leh cutubka qaboojinta ee jabay u raraa safka hore.
| Hawada qolka qaboojinta | 5.0 °C |
|---|---|
| Waqtiga shaqaalaha (saacadaha albaabada shaqaalaysan) | 0.5 h |
| Gawaarida sugaya | 0 |
| Isticmaalka meesha raritaanka | 0 % |
| Awoodda qaboojinta | 0.0 kW |
33 °C dibadda, gawaaridu si joogto ah ayay u imaanayaan, afar albaab ayaa u furan dejinta. Mid ka mid ah labada compressor ayaa dhowaan jabi doona. Ku hay tallaalada 2–8 °C gudahood.
Afar saacadood kadib bilowga maalin shaqo oo 14 saacadood ah, kor-u-kaca ciidaha ayaa bilaabma: toddoba saacadood, 7 gaadhi saacaddii ayaa ku yimaada waqtiyo ballansan — in ka badan laba jibaar 3-da caadiga ah — saddex albaab oo keliya ayaana shaqaalaysan. Darawallada ballansani waxay leeyihiin waqtiyo ballan, sidaas darteed celceliska sugitaanku waa inuu ahaadaa 20 daqiiqo ama ka yar. Kooxo raritaan oo dheeraad ah ayaa diyaar u ah in la yeedho, laakiin miisaaniyadda saacadaha dheeraadka ahi waxay daboolaysaa 68 saacadood oo albaab-shaqaalaysan ah maalintaas. Waqtigeeda ku fur albaabo ku filan — adigoon qolka qaboojinta karin galab 33 °C ah.
Laba iyo toban gaadhi ayaa horeba sugaya, laba albaab oo keliya ayaana shaqaalaysan. Kadibna qalabka qaboojinta ee gaadhi safka gadaashiisa ku jira ayaa dhinta — kuleyl 35 °C ah.
Xiriir kasta oo jilaha isticmaalo, iyo ilaha uu ka yimid. Mudnaanta lagu calaamadiyay malo-awaal waa hagaajin muunad ah.
C · dT/dt = UA·(T_out − T) + Q_door − Q_refrig[3][2]Malo-awaal: culeyska kuleylka, gudbinta darbiyada iyo albaabada, cabbirka compressor-ka iyo waqtiga adeegga waa qiyam muunad ah.Q_door = n_open · 0.6 · 1.2 kW/K · (T_out − T) · (1 − 0.7·curtain)[2]Malo-awaal: culeyska kuleylka, gudbinta darbiyada iyo albaabada, cabbirka compressor-ka iyo waqtiga adeegga waa qiyam muunad ah.COP = 0.45 · T_evap / (T_cond − T_evap) [K][4]T_product(t+Δt) = T_room + (T_product − T_room)·e^(−Δt/2h)[3]excursion = Σ max(0, T − 8, 2 − T) · Δt [°C·h][1]cold room 60 MJ/K, walls 0.6 kW/K · door open 60 % of unloading · air curtain −70 % infiltration, +3 kW fan per busy door · 2 × 40 kW compressors, −1 %/K above 32 °C · 4 kW per busy door (levellers, lights) · failed reefer τ = 3 h · scenario site settings: cold-room pre-alarm 7 °C, overtime budget 68 door-hours per 14 h day · booked trucks miss 5 % of slots · unloading Erlang-2Malo-awaal: culeyska kuleylka, gudbinta darbiyada iyo albaabada, cabbirka compressor-ka iyo waqtiga adeegga waa qiyam muunad ah.arrivals ~ Poisson(λΔt) + booked slots (5 % no-show), service ~ Erlang-2 (mean 45 min), c staffed doors; X = n_busy / 45 min (smoothed, τ = 1 h); W_q = L_q / X[6][5]crew time = Σ c_staffed · Δt [door-hours]Aan-kala-sooc: abuurahaha mulberry32 oo abuur leh; qaybinta la isticmaalay — isku-mid, tibaax (CDF rogan), caadi (Box–Muller), Poisson (Knuth). Abuurka waa la muujiyaa waana la wadaagi karaa.
Moodel waxbarasho — looma isticmaalo go’aamo hawlgal. Goobaha dhabta ahi waxay joogto kasta u hagaajiyaan qalabkooda iyo xogtooda.