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Daikin EWLD420I-SS Брошюра онлайн [2/36] 529426
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Index
Features and advantages ................................................................................................................................................. 3
Seasonal quietness ........................................................................................................................................................ 3
Infinitely capacity control ................................................................................................................................................ 3
Code requirements – Safety and observant of laws/directives ....................................................................................... 3
Certifications................................................................................................................................................................... 4
Versions ......................................................................................................................................................................... 4
Sound Configuration....................................................................................................................................................... 4
General characteristics .................................................................................................................................................... 5
Cabinet and structure ..................................................................................................................................................... 5
Screw compressors........................................................................................................................................................ 5
Ecological HFC 134a refrigerant .................................................................................................................................... 5
Evaporator...................................................................................................................................................................... 5
Electronic expansion valve ............................................................................................................................................. 5
Refrigerant Circuit........................................................................................................................................................... 5
Electrical control panel ................................................................................................................................................... 6
Standard accessories (supplied on basic unit) ............................................................................................................... 8
Options (on request)....................................................................................................................................................... 8
Nomenclature .................................................................................................................................................................... 9
Technical specifications................................................................................................................................................. 10
Sound levels .................................................................................................................................................................... 17
EWLD~I-SS.................................................................................................................................................................. 17
Sound pressure levels correction for different distances .............................................................................................. 17
Operating limits............................................................................................................................................................... 18
EWLD~I-SS.................................................................................................................................................................. 18
How to use the Correction factors proposed in the previous tables.............................................................................. 19
Water charge, flow and quality ..................................................................................................................................... 20
Water content in cooling circuits................................................................................................................................... 21
Standard ratings.............................................................................................................................................................. 22
EWLD~I-SS.................................................................................................................................................................. 22
Evaporator and condenser pressure drops.................................................................................................................. 25
Dimensions...................................................................................................................................................................... 26
Installation notes............................................................................................................................................................. 29
Warning ........................................................................................................................................................................ 29
Handling ....................................................................................................................................................................... 29
Location........................................................................................................................................................................ 29
Minimum space requirements ...................................................................................................................................... 29
Technical specification for water cooled screw chiller ............................................................................................... 30
GENERAL .................................................................................................................................................................... 30
REFRIGERANT............................................................................................................................................................ 30
PERFORMANCE.......................................................................................................................................................... 30
UNIT DESCRIPTION.................................................................................................................................................... 30
NOISE LEVEL AND VIBRATIONS............................................................................................................................... 30
DIMENSIONS............................................................................................................................................................... 30
CHILLER COMPONENTS............................................................................................................................................ 31
Содержание
- Code requirements safety and observant of laws directives 3
- Features and advantages 3
- Infinitely capacity control 3
- Seasonal quietness 3
- Certifications 4
- Sound configuration 4
- Versions 4
- Cabinet and structure 5
- Ecological hfc 134a refrigerant 5
- Electronic expansion valve 5
- Evaporator 5
- General characteristics 5
- Refrigerant circuit 5
- Screw compressors 5
- Control section main features 6
- Electrical control panel 6
- Safety device logic for each refrigerant circuit 6
- Chiller sequencing 7
- Digital sequencing panel 7
- Microtech iii 7
- Microtech iii remote control 7
- Regulation type 7
- Serial sequencing panel 7
- Supervising systems on request 7
- System security 7
- Options on request 8
- Standard accessories supplied on basic unit 8
- Nomenclature 9
- Technical specifications 10
- Ewld i ss 17
- Sound levels 17
- Sound pressure levels correction for different distances 17
- Ewld i ss 18
- Operating limits 18
- Table 1 evaporator minimum and maximum water 18
- Table 2 evaporator fouling factors 18
- Table 3 minimum glycol percentage for low air temperature 18
- Table 3 minimum glycol percentage for low water temperature 18
- How to use the correction factors proposed in the previous tables 19
- Table 4 correction factors for low evaporator leaving water temperature 19
- Table 5 correction factors for water and glycol mixture 19
- Water charge flow and quality 20
- Water content in cooling circuits 21
- Ewld i ss 22
- Notes 1 cc cooling capacity 2 pi unit power input 3 hr heat rejection 4 elwt evaporator leaving water temperature δt 5 c 5 data refers to 0 0176 m2 c kw evaporator fouling factor 22
- Standard ratings 22
- Notes 6 cc cooling capacity 7 pi unit power input 8 hr heat rejection 9 elwt evaporator leaving water temperature δt 5 c 10 data refers to 0 0176 m2 c kw evaporator fouling factor 23
- Notes 11 cc cooling capacity 12 pi unit power input 13 hr heat rejection 14 elwt evaporator leaving water temperature δt 5 c 15 data refers to 0 0176 m2 c kw evaporator fouling factor 24
- 91 l s 25
- Evaporator and condenser pressure drops 25
- Ewld i ss 25
- How to use the formula example evaporator 25
- Pd2 kpa pd1 kpa x where pd2 pressure drop to be determinated kpa pd1 pressure drop at nominal condition kpa q2 water flow at new working condition l s q1 water flow at nominal condition l s 25
- The unit ewld320i ss has been selected for working at the following conditions evaporator water in out 11 6 c saturated discharge temperature 40 c the cooling capacity at these working conditions is 333 kw the evaporator water flow at these working conditions is 15 1 l s the unit ewld320i ss at nominal working conditions has the following data evaporator water in out 12 7 c saturated discharge temperature 45 c the cooling capacity at these working conditions is 328 kw the evaporator water flow at these working conditions is 15 7 l s the evaporator pressure drop at these working conditions is 34 kpa the evaporator pressure drop at the selected working condition will be pd2 kpa 34 kpa x pd2 kpa 35 kpa note if the calculated evaporator water pressure drop is below 10 kpa or above 100 kpa please contact the factory for dedicated evaporator 25
- To determinate the evaporator or condenser pressure drop for different versions or at different working condition please refer to the following formula 25
- Dimensions 26
- Handling 29
- Installation notes 29
- Location 29
- Minimum clearance requirements for machine maintenance 29
- Minimum space requirements 29
- Warning 29
- Dimensions 30
- General 30
- Noise level and vibrations 30
- Performance 30
- Refrigerant 30
- Technical specification for water cooled screw chiller 30
- Unit description 30
- Chiller components 31
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