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Daikin EWLDС13I-SS [25/36] Evaporator and condenser pressure drops
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Evaporator and condenser pressure drops
EWLD~I-SS
320 400 420 500 600 650 750 800 850 900
Cooling Capacity (kW)
328 391 428 504 596 657 730 788 850 919
Water Flow (l/s)
15.67 18.68 20.45 24.08 28.48 31.39 34.88 37.65 40.61 43.91
Evaporator Pressure Drops (kPa)
34 47 47 54 49 39 52 47 47 45
Water flow and pressure drop referred to nominal condition: evaporator water in/out: 12/7°C – saturated discharge temperature: 45°C
950 C10 C11 C12 C13 C14 C15 C16 C17
Cooling Capacity (kW)
966 1033 1078 1125 1188 1267 1319 1370 1422
Water Flow (l/s)
46.15 49.35 51.50 53.75 56.76 60.53 63.02 65.46 67.94
Evaporator Pressure Drops (kPa)
45 52 46 49 41 51 55 59 63
Water flow and pressure drop referred to nominal condition: evaporator water in/out: 12/7°C – saturated discharge temperature: 45°C
To determinate the evaporator or condenser pressure drop for different versions or at different working
condition, please refer to the following formula:
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)
How to use the formula: Example (evaporator)
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: 15.91 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: 15.67 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.
15,91
(l/s)
15.67
(l/s)
1.8
1.8
Q
2
(l/s)
Q
1
(l/s)
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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