FREE COOLING CAPACITY

 

3

 

 

 

 

 

 

 

2,5

 

 

 

 

 

 

factor FCC

2

 

 

 

 

 

 

 

7°C

12°C

 

 

 

 

correction

 

 

 

 

 

1,5

5°C

10°C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

capacity

 

 

 

 

Return water temperature 15°C

 

 

 

 

 

 

 

 

Free cooling

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0,5

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

-20

-15

-10

-5

0

5

10

Ambient air temperature (°C)

Mod.

 

040

045

050

060

070

080

090

110

Nominal Free cooling capacity

kW

---

---

43

43

43

45

70

72

 

 

 

 

 

 

 

 

 

 

Mod.

 

120

130

140

160

190

210

240

260

Nominal Free cooling capacity

kW

72

72

94

94

110

115

135

135

Mod.

 

300

320

380

430

500

 

 

 

Nominal Free cooling capacity

kW

185

185

235

245

240

 

 

 

 

 

 

 

 

 

 

 

 

 

The nominal Free Cooling capacity is obtained when all compressors are OFF, the return water temperature from the system is 15°C and the ambient temperature is 2°C. to calculate the free cooling capacity in different conditions please refer to the above diagram. To obtain free cooling duty multiply the nominal Free Cooling capacity by the CFC factor obtained.

21

06617645-02

Page 21
Image 21
Quartz TECHNICAL MANUAL AIR COOLED WATER CHILLERS AND HEAT PUMPS WITH AXIAL FANS, 06617645-02 Free Cooling Capacity