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1 HIBAH PENGEMBANGAN COURSE CONTENT BERBASIS WEB & MULTIMEDIA PROGRAM HIBAH KOMPETISI K 1 INHERENT UNIVERSITAS GADJAH MADA 2006 HIBAH PENGEMBANGAN COURSE.

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Presentation on theme: "1 HIBAH PENGEMBANGAN COURSE CONTENT BERBASIS WEB & MULTIMEDIA PROGRAM HIBAH KOMPETISI K 1 INHERENT UNIVERSITAS GADJAH MADA 2006 HIBAH PENGEMBANGAN COURSE."— Presentation transcript:

1 1 HIBAH PENGEMBANGAN COURSE CONTENT BERBASIS WEB & MULTIMEDIA PROGRAM HIBAH KOMPETISI K 1 INHERENT UNIVERSITAS GADJAH MADA 2006 HIBAH PENGEMBANGAN COURSE CONTENT BERBASIS WEB & MULTIMEDIA PROGRAM HIBAH KOMPETISI K 1 INHERENT UNIVERSITAS GADJAH MADA 2006 Mechanical Engineering Department Faculty of Engineering Gadjah Mada University 2006/2007

2 2 Topics : 1. AC Principle 1. AC Principle 2. Human being thermodynamic 2. Human being thermodynamic 3. Cooling Load 3. Cooling Load 4. Psychrometric 4. Psychrometric 5. Type of AC 5. Type of AC 6. Air Handling Unit (AHU) 6. Air Handling Unit (AHU) 7. Fan Cooling Unit (FCU) 7. Fan Cooling Unit (FCU) 8. Trouble Shooting 8. Trouble Shooting

3 3 AC Principle AC controls air : AC controls air : –Temperature –RH % –Quality –Air Circulation –Noise Refrigeration Application Refrigeration Application –Cold storage – Room AC –Textile Industry –Ice Cream Factory –Electronic Manufactory –Mall, High Rise Building etc

4 4 Air Composition : Atmosphere Air Standard Atmosphere Air Standard –G = 9,807 m/s 2 –T = 15  C –P = 1 atm = 14,7 psi = 101,325 kPa – P v = R T –  = 1,225 kg/m 3 –R = 287 J/kgK Dry Air : O 2 = 20,95% N 2 = 78,09% CO 2 = 0,03% Ar = 0,93% BM =28,965 Moisture (H 2 O) BM=18

5 5 Sifat-sifat udara Tekanan, P = P a + P v Tekanan, P = P a + P v Kelembaban spesifik Kelembaban spesifik Kelembaban relatif Kelembaban relatif Tingkat kejenuhan Tingkat kejenuhan Volume spesifik, v Volume spesifik, v Temperatur bola kering, T db Temperatur bola kering, T db Temperatur bola basah, T wb Temperatur bola basah, T wb Temperatur jenuh, T dp Temperatur jenuh, T dp Enthalpi, h Enthalpi, h

6 6 Psychrometric Chart RH (%) T dp

7 7 SKALA SHF T db =24 o C RH =50%

8 8 Thermodynamic process 0 12 3 4 5 6 7 8 Proses : 0-1 = Sensible heating 0-2 = Sensible cooling 0-3 = Humidification 0-4 = Dehumidification 0-5 = Heating & Dehumidification 0-6 = Heating & Humidification 0-7 = Cooling & Humidification 0-8 = Cooling & Dehumidification

9 9 Human Being Thermodynamic H m = 100% UDARA(0,5 m 3 /jam) H a = 2% H L = 80% W = 20% H c = 25% H R = 43% H e = 30% SENSIBEL LATEN H m – W = H e + H c + H R Heat reject man = 105 – 117 Watt/man

10 10 Cassette Type Indoor Unit

11 11 Ceiling Type Indoor Unit

12 12 Packaged AC

13 13 Meeting Room

14 14 Wall Mounted Indoor Unit

15 15 Energy Source Internal : Internal : –Penghuni –Lampu –Peralatan listrik Eksternal : Eksternal : –Infiltrasi –Radiasi surya –Konduksi, konveksi Ventilasi Ventilasi Fan, ducting Fan, ducting Lampu Peralatan listrik Penghuni Infiltrasi Konduksi 1TR = 12 000 Btu/hr = 3,5 kW = 3000 kcal/hr

16 16 Pengelompokan beban pendinginan T R, RH% RSH,RLH,RTH ERSH, ERLH, ERTH AHU SADA MA OA EA RA BA BF OASH,OALH OATH TSH,TLH,GTH ERSH = RSH + BF.OASH ERLH = RLH + BF. OALH ERTH + ERSH + ERLH TSH = RSH + OASH TLH = RLH + OALH GTH = TSH +TLH

17 17 CARA MENGGAMBAR GARIS SHF R(24 o C,60%) Misal RSHF = 0,75

18 18 R M S T adp GSHF RSHF ERSHF Proses pengkondisian udara O T SA TRTR

19 19 Kebutuhan udara suplai Satuan British Satuan British CFM sa CFM sa Satuan SI Satuan SI CMM SA CMM SA RSH,RLH, RTH (Btu/hr) T (  F),  ( grain/lb) CFM (ft 3 /min) RSH,RLH, RTH (kW) T (  F),  ( gram/kg) CMM (m 3 /min) = 35 CFM

20 20BFAplikasiContoh 0.3 – 0.5 Beban kecil Recidence 0.2 – 0.3 Beban besar SHF kecil Recidence, Retail shop, factory 0.1 – 0.2 Kenyamanan Dept. Store, Bank, factory 0.05 – 0.1 Beban besar Beban laten besar Dept. Store, Restaurant 0.0 – 0.1 All Outdoor Systems Hospital, Operation Room

21 21 Tabel Bypass Factor Pipe/row 3 Fin/cm 6 Fin/cm Air Velocity (m/min) 9021090210 20.420.550.220.38 30.270.400.100.23 40.190.300.050.14 50.120.230.020.09 60.080.180.010.06 80.030.08

22 22 Thank You To be continue To be continue


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