Chiller vs VRF systemLG Electronics Inc. LGEHQ CAC Team 1/14 Copyright ⓒ 2008 All rights reserved LG Electronics Inc. 1. Design Comparison Design Operation Installation Commissioning System concept Maintenance Reliability VRF is very simplified refrigerant piping system. More flexible than water piping. Feature System composition Chiller system • Cooling tower • Chiller • Water piping, Duct working • FCU (Fan Coil Unit) • AHU (Air Handling Unit) • Water pumps MULTI V Plus Ⅱ (VRF) • Outdoor unit (air-cooled type) • Indoor unit • Refrigerant piping Chiller 2/14 Copyright ⓒ 2008 All rights reserved LG Electronics Inc. 1. . Design Comparison Design Operation Installation Commissioning Network design Maintenance Reliability Easy network wiring Feature Chiller system • Complicated wiring MULTI V Plus Ⅱ (VRF) • Simple wiring Network ACP 3/14 Copyright ⓒ 2008 All rights reserved LG Electronics Inc. additional control manager in the system needed.1. increasing cost • Third part control provider needed. MULTI V Plus Ⅱ (VRF) • Simple control structure No additional control provider • Central control and energy monitoring with low cost available Control system VAV boxes supplier [Manufacturer] 4/14 Copyright ⓒ 2008 All rights reserved LG Electronics Inc. . Design Comparison Design Operation Installation Commissioning Total management Maintenance Reliability (For VRF) Manufacturer provide all equipment Feature Chiller system • Complicated control structure. interconnectivity problems. 2. with no regard to user demands. . Feature Capacity control Chiller system • The systems commonly condition the entire building at predetermined times. (very hot midnight. holiday etc) MULTI V Plus Ⅱ (VRF) • The systems condition only the necessary rooms with regard to user demands. VRF could be operated for the user demands. Operation Comparison Design Operation Installation Commissioning Individual operation Maintenance Reliability After office hours operation. weekend. Operating Area < Limited operation> 5/14 <Better Capacity operation> Copyright ⓒ 2008 All rights reserved LG Electronics Inc. 5℃ Cooling MULTI V system Chiller system 0. . Copyright ⓒ 2008 All rights reserved LG Electronics Inc. Operation Comparison Design Operation Installation Commissioning Temp.5 0 C from set point 30 Room temp. control Maintenance Reliability Precise temperature control Feature Temperature control Chiller system Require 1℃ or 2℃ MULTI V Plus Ⅱ (VRF) Very precise ± 0.2. 25 20 15 10 20 30 6/14 40 50 60 70 MIN. Feature Space Efficiency Chiller system • Large duct space MULTI V Plus Ⅱ (VRF) • Small refrigerant space 7/14 Copyright ⓒ 2008 All rights reserved LG Electronics Inc.3. Installation Comparison Design Operation Installation Commissioning Space (Duct working) Maintenance Reliability VRF system doesn’t need a duct space. . Feature Installation space Chiller system • Need a machine room MULTI V Plus Ⅱ (VRF) • No need a machine room Pump (Machine room drawing) Chiller (Rooftop drawing) Boiler Cooling tower Outdoor Unit (On the rooftop) (On the rooftop) 8/14 Copyright ⓒ 2008 All rights reserved LG Electronics Inc. .3. Installation Comparison Design Operation Installation Commissioning Installation space Maintenance Reliability VRF system is no need for a machine room. .3. Installation Comparison Design Operation Installation Commissioning Space (Pipe shaft) Maintenance Reliability Efficient use of space is possible for VRF system Feature Space Efficiency Chiller system • Large pipe shaft is needed for water piping MULTI V Plus Ⅱ (VRF) • Small pipe shaft is needed CHILLER SYSTEM VRF System 1/3 P P 9/14 Copyright ⓒ 2008 All rights reserved LG Electronics Inc. panel and piping is required.3. cooling tower. Feature Chiller system • Capacity addition is difficult as additional mechanical room. pump. . Installation Comparison Design Operation Installation Commissioning System expansion Maintenance Reliability VRF system expansion is very easy with extra outdoor & indoor unit. MULTI V Plus Ⅱ (VRF) System Expansion • System Expansion is Easy + 10/14 Copyright ⓒ 2008 All rights reserved LG Electronics Inc. 4. . of commissioning point Commissioning Maintenance Reliability There are a lot of commissioning points for the chiller system Feature Commissioning Chiller system • 6 Steps Commissioning MULTI V Plus Ⅱ (VRF) • 1 Step Commissioning (4) 6 steps Commissioning 1 step Commissioning Water cooled chiller (3) 11/14 Copyright ⓒ 2008 All rights reserved LG Electronics Inc. Commissioning Comparison Design Operation Installation NO. overhaul • Pump • Water treatment • Cooling tower cleaning MULTI V Plus Ⅱ (VRF) • Filter cleaning • Heat exchanger cleaning • Cycle check by notebook (LG MV) Maintenance (4) Water cooled chiller (3) 12/14 Copyright ⓒ 2008 All rights reserved LG Electronics Inc.5. Feature • • • • Chiller system Filter cleaning Duct cleaning Water pipe – maintenance Periodical oil change. Maintenance Comparison Design Operation Installation Commissioning Maintenance list Maintenance Reliability Maintenance costs for a Multi V is lower than chilled water systems. . . Maintenance Comparison Design Operation Installation Commissioning Water treatment Maintenance Reliability (For Chiller Water treatment is required for clean water) Feature Water treatment Chiller system • Water treatment is required (deficient service can cause legionary disease in the system) MULTI V Plus Ⅱ (VRF) • No water treatment is needed <Polluted Cooling Tower> 13/14 Copyright ⓒ 2008 All rights reserved LG Electronics Inc.5. . Maintenance Comparison Design Operation Installation Commissioning Scale cleaning Maintenance Reliability (For Chiller) Maintenance & cleaning periodically by exclusive company Feature Scale cleaning Chiller system • Need to clean the water pipes System efficiency drop & origin of germs MULTI V Plus Ⅱ (VRF) • No water pipes : No scale (use refrigerant) After 2~3year 10% Energy Loss Unit : % Unit : mm thickness of scale After 5~6year After 7~8year 25~30% 35~40% 14/14 < The system is consist of refrigerant pipes > Copyright ⓒ 2008 All rights reserved LG Electronics Inc.5. boilers. . Maintenance Comparison Design Operation Installation Commissioning Maintenance Staff Maintenance Reliability (For Chiller) Certified maintenance staff is needed Feature Maintenance Staff Chiller system • The system requires certified maintenance staff not only for chillers but also pumps. • More expensive maintenance cost. cooling towers etc. MULTI V Plus Ⅱ (VRF) • No need special maintenance staff. • Economic and easy maintenance < Maintenance Staff> 15/14 <NO Maintenance Staff> Copyright ⓒ 2008 All rights reserved LG Electronics Inc.5. anti corrosion additives needed MULTI V Plus Ⅱ (VRF) • Refrigerant does not cause corrosion therefore no pipe damage occurred < Water pipe leakage > 16/14 <Cooper Pipe> Copyright ⓒ 2008 All rights reserved LG Electronics Inc. Reliability Comparison Design Operation Installation Commissioning Pipe Erosion Maintenance Reliability (For Chiller) Certified maintenance staff is needed Feature Pipe Erosion Chiller system • Pipe erosion can cause leakage. • System capacity reduction. . • Brines use increase corrosion.6. 660 17/14 Copyright ⓒ 2008 All rights reserved LG Electronics Inc.166 Btu/m2 • Equipment : Water cooled chiller /Multi V unit .Water Cooled Chiller :Trane Water cooled chiller 350 Tr x 2 set =700 Tr + 300 Back up Pump’s =400 Tr x 2 set AHU = 8000 CFM x 36 set Cooling Tower =1200 Gpm x 3 +3 Back up .109. Pr ice Installation Multi V 877.484 148.200 m2 • Cooling Load (Tr) / m2 : 700 Tr *12000 Btu/Hr = 1.13 hour a day (09:00 ~ 22:00) .000 m2 : 6 storey Building :1.500 m2 * 80 % * 6 Floor = 7.097 • Air conditioning time : Operation .065 383.average load by month VRV Installation 1.161 Initial Cost (USD)Total Water Cooled C hiller AHU / Cooling T ower / Pump.VRF System :LG Multi V Plus II 48 Hp x 19 set=912 Hp 726 Tr •April 2008 •Cooling Only •Air Duct Included Category Product Chiller Price Initial Cost (USD) 355.7.498 235.500 m2/floor • Actual cooling area : 1.871 874.30 days a month . Economic analysis Initial Cost Running Cost Maintenance Cost MULTI V vs Chiller Total cost Equipments & Installation cost • Type of Building: Shopping Mall • Total area 9. . Economic analysis Initial Cost Running Cost Maintenance Cost MULTI V vs Chiller Total cost Electrical cost Multi V running cost is 65 % compare to chiller Running Cost (USD)Tota l $400k Chiller $300k Multi V Chiller Category Product Multi V $200k Chiller Price Water Cooled C hiller Multi V AHU / Coolin g Tower / Pu mp. Price Price 308.7. Thailand electrical standard •ARI-Air conditioning & Refrigeration Institute 18/14 ye ar Copyright ⓒ 2008 All rights reserved LG Electronics Inc. 14 th 2n d 4t h 6t h 8t h .697 $100k Running cost Savings up to 15th yr : 35% $0k 200.158 10 th 12 th •Based on KW data chiller/Multi V •Based on. 6 times/yr . .48 USD / Indoor / yr. Economic analysis Initial Cost Running Cost Maintenance Cost MULTI V vs Chiller Total cost Maintenance cost Multi V maintenance cost is 24 % compare to chiller Category Price Maintenance Cost (USD)Total $400k Chiller $300k Multi V Chiller Multi V Chiller Price Water Cooled C hiller Multi V AHU / Cooling Tower / Pump.468 •Maintenance breakdown •Chiller system -31 USD / Rt / yr.7. Price Price 32..6 times/yr •Multi V...145 USD / Outdoor / yr.6 times/yr 19/14 ye ar Copyright ⓒ 2008 All rights reserved LG Electronics Inc.177 $200k $100k $0k Maintenance Cost savings Up to 15th yr : 66% 10 th 12 th 14 th 2n d 4t h 6t h 8t h 11. 000㎡ 20/14 Copyright ⓒ 2008 All rights reserved LG Electronics Inc.097 VRF system 927.698 32.177 1.138.158 11.7.217.468 1. 9.7 years Shopping mall 6F.057 Remarks Running cost (USD) Economic Maintenace cost Analysis (USD) Total cost (USD) BEP 308.972 - 200. . Economic analysis Initial Cost Running Cost Maintenance Cost Total cost Category Initial cost (USD) Chiller system 877.683 1. 20K$ 8th 2nd 1st 3rd 9th 1st year 2nd year 3rd year 4th year 21/14 Copyright ⓒ 2008 All rights reserved LG Electronics Inc.27 M$ (71%) BEP (Break Even Point) : 1. .7 Years LCC (15 years) BEP +70K$ $7000k $6000k $5000k $4000k $3000k $2000k $1000k $0k 4th 5th 6th 7th Chiller Multi V Cost savings : 29% +40K$ BEP : 1.99 M$ > Multi V 4.7 Years +10K$ 10th 11th 12th 13th 14th year 15th BEP : 1. LCC LCC (Life Cycle Cost for 15 years) : Chiller 5.8.7 Years . 321 200 11 35% Electrical Fee 77% 4.274 73% Maintenance 32 Product & Installation 1.992 1.228 7% Electrical Fee 308 5.109 877 Maintenance Product & Installation 8% 15% 4% 23% Chiller Multi V Chiller Multi V 22/14 Copyright ⓒ 2008 All rights reserved LG Electronics Inc. .8. LCC Initial Cost (1st year) ( K US$ ) LCC (15 years) 1. 000 300.129 9.000 % Sub total (USD) 255.258 16.445 130.000 270.109.000 500.000 2.548 265.350 81.960.000 8.570 1.520.399.915 81.000 EA 2 1 2 1 3 3 36 Sub total (THB) 7.498 21% 100% 23/14 Copyright ⓒ 2008 All rights reserved LG Electronics Inc.900. Cost estimation Type of building : Shopping mall Water cooled Chiller :350 TR x 2 set=700 Tr + 300Tr (back up) VRF system:48 Hp x 19 set = 912 Hp (726TR) Commercial Building : (Shopping Mall .000 18.500㎡ * 80% * 6F = 7.200㎡ Cooling load(TR) / ㎡ : 700TR * 12.900.125 141.200 ㎡ = 1167 Btu/㎡ Classification Chiller (screw type) back up chiller (screw type) Cooling tower (open type) back up cooling tower (open type) Product Pump (Condenser) + 1 back up Pump (Evaporator) + 1 back up AHU Sub total Pipe & Insulation Valve & Acc.510.221.950 262.100.290 503.000 7.000.000 27.000 100.548 Water Cooled Chiller (Screw type) 57% 48 Hp 10 Hp VRF 957.000.660 Capacity 350 RT 300 RT 400 RT 400 RT 1200 GPM 840 GPM 8.000㎡ Total Area) .9.050.400 27.710 81.323 93.050 125.300 19 90 90 1 1 57 38 9.290.516 235. .000 91.App.677 8.000 90.125 141.355 2.045 874.871 887.6 storey building:1500 ㎡ per floor Actual cooling area : 1.000Btu/h/TR 7.240.100.570 94.617 4.548 383.000 15.000 32.000 36.000 3.610.000 1. Installation Power & Control Duct working Sub total Total (Product + Installation) Outdoor unit Indoor unit ceiling duct Wired remote controller Centrol controller (ACP) Product Centrol control software (AC Manager) Y branch ODU joint Sub total Outdoor unit Installation Indoor unit ceiling duct piping & electrical work duct work Sub total Total (Product + Installation) I lot 45.484 100.109.567 3.000 500.224 8.034 4.000 2.000 3.000 3.000 CFM Price 3.445 33% 11% 43% 100% 79% 290.000 90 90 4.463 2.000 70.000 500.920.183.419 586.645 104.161 1.650 3.000 34.000 11. 8 1015.9 47.84 331.84 798 72 870.2 condition electrical charge in Thailand THB / month 517.393.9 1.5 257.269.375.725 9.2.06 3.262.82 7.37 24.1 3.App.158 308.78 812.698 Used by Schedule 4.6 13.0 161.0 99.8 2 2 6 48 19 90 542 29.393 USD 16.680 25.6 Load 100% 75% 50% 25% Power consumption kW 542 179.197.2 2.5 5.1 1.2 83.9 55.1 5.9 1. .5 5.35 42 0.384.0 kWh / day 24/14 Copyright ⓒ 2008 All rights reserved LG Electronics Inc.6 13.325.2 50.3 3.60 3.3 Operation hours 0.1 5.967.773.045 kWh / month 3.679.883.754.78 106.1 7.961.95 97.0 kWh / day 113.736.2 Chiller system portion 100% 33% 15% 9% VRF Chiller Gap kWh / month 132.469 280.2 112.0 Chiller ■ Chiller system Power consumption under partial load Load Chillier 100% 542 75% 50% 179 84 474 474 653 558 75% 50% 609 287 25% 47 474 521 25% 165 Others 474 Total 1016 ■ VRF system Load VRF 100% 870 VRF operating time / day (hours) operating day / month Cooling load portion IPLV 100% cooling load 75% cooling load 50% cooling load 25% cooling load VRF (MULTI V system) Operation hours 0.67 233.076 797.9 5.565.386.8 VRF Chiller operating cost 1 year 200. Actual running cost Energy consumption / unit (kW) Category EA Total energy consumption (kW) Water Cooled Chiller (Screw type) Chiller-350 Tr Cooling tower-1260 GPM Pump-50 Hp AHU-10 tr Total Outdoor Unit 48 HP-R410a Indoor Unit 10 HP CCD Total 13 30 100% 1% 42% 45% 12% 271 14. 500 355.468 Remarks times / year times / year times / year 840 Hp 3.500 1500 THB / indoor unit.500 USD 32.000 4.000 120.000 4500 THB / ODU module.000 20.000 240.500 Total 355. year 270.000 93.000 60.000 15.App.500 Baht/unit 90 19 350 RT 400 RT 1200 GPM 15 RT 2 persons 105. Maintenance cost Maintenance cost Cost Chiller (Screw type) Cooling tower Chiller (Screw type) Pump AHU Control engineer Total Indoor unit VRF Outdoor unit Total THB 950 THB / RT.500 A note Chiller VRF 25/14 Copyright ⓒ 2008 All rights reserved LG Electronics Inc.600 140.000 Unit Baht/unit Baht/unit Baht/unit Baht/unit Baht/unit 2 2 6 70 12 Category Capacity EA Maintenance cost / year 210. year 997.177 6 6 6 11.600 2. year 85.600 270.000 85.000 803. . App.01 + 0.12 A B C D ARI550/590-2003 WEIGHTED (%) Cooling Load 1% 42% 45% 12% 100% 75% 50% 25% 26/14 Copyright ⓒ 2008 All rights reserved LG Electronics Inc. Energy efficiency (IPLV) ARI Released The New Standard in 2003 Available through the ARI web site: WWW. .ORG Portion by cooling load (%) kW / kW (ARI Part load weighting factors) IPLV OR = APLV 1 0.42 + 0.ARI.45 + 0.