air-cooled chillers with scroll compressors and centrifugal fans … · 2021. 1. 18. · adoption...

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CHILLERSIT COOLING

AIR COOLED CHILLERS WITH SCROLL COMPRESSORS AND CENTRIFUGAL FANS, (PLUG FAN), FOR INDOOR INSTALLATION17-281 kW

CHILLERSIT COOLING

A TRULY UNIQUE SOLUTION FOR INDOOR INSTALLATIONS.

NR-C-Z features high efficiency scroll compressors, weld-brazed plate evaporator, EC plug fans, full aluminum microchannel coils and in-house developed management software.

Air cooled units with axial fans are usually designed for outdoor installations, as they require minimum clearance space to ensure proper airflow through the air heat exchanger.

NR-C-Z revolutionize this paradigm. Thanks to the adoption of centrifugal fans, this air cooled chiller perfectly fits indoor installations.Long ducts for air discharge can be adopted thanks to the available static pressure of the radial fans. Simplified installation is therefore possible, even in narrow enclosed spaces.

Air cooled chillers for indoor installation.17-281 kW

NR-C-ZAIR COOLED CHILLERS

250 50 75 100 125 150 175 200 225 250 275 300

COOLING CAPACITY 17-281 kW

a Data centers and server rooms

a Technological Centres

a Telecommunication Systems

a Laboratories

IDEAL FOR INDOOR INSTALLATIONS

StandardUnit with standard ventilation regulation.

Super Low NoiseThe highest level of noise reduction.

Baseline

-10 dB(A)

-

SL

Standard unitUnit for the production of chilled water.

Partial heat recoveryUnit equipped with an auxiliary heat exchanger on the compressor discharge for superheat recovery.

-

D

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IT COOLING APPLICATIONS

ACOUSTIC VERSIONS HEAT RECOVERY CONFIGURATIONS

NR-C-Z revolutionizes the paradigm of air cooled units. Thanks to the adoption of centrifugal fans in a extremely compact layout, this range of chillers is perfect for indoor installations.

version A 3,08

version K 2,90

EFFICIENCY AT FULL LOADS

AVERAGE EERversion A 5,55

version K 5,27

SEASONAL COOLING ENERGY EFFICIENCY

AVERAGE SEPR HT

ErP COMPLIANT

NR-C-Z ensures perfect operation with external air temperature values down to -10°C during the winter season, and up to 47°C during the summer season.

The maximum chilled water temperature produced is 20°C, ideal for IT Cooling applications where, in combination with containment solutions, room cooling systems require greater cooling temperatures than those of required by comfort applications.

CHILLER OPERATING LIMITS

25

Outd

oor a

ir te

mpe

ratu

re [°

C]

Evaporator outlet water temperature [° C]

0

-10

-20

20

30

10

5-5 10-10 15

47°C

20°C

< Required accessories: EVAPORATOR OUTLET WATER TEMPERATURE

CHILLERSIT COOLING

TECHNOLOGICAL CHOICES

4 Full aluminum microchannel coils.

4 Less refrigerant charge.

4 Reduced weight.

4 Sizes 0904/A, 0904/SL-K, 1004/A, 1004/SL-K and 1104/K have copper tubes and aluminium fins heat exchanger coils.

HEAT EXCHANGERS

NR-C-Z

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W3000TE CONTROL and USER-FRIENDLY INTERFACE

4 19 supported languages.

4 Optional serial cards with the most common protocols are available: ModBus, Bacnet MS/TP RS485, Bacnet Over IP, Echelon Lonworks.

4 “QUICK MIND” logic: a self-adapting algorithm that activates or deactivates the compressors only when a change in the system load moves the flow temperature out of the setpoint neutral zone.

4 Diagnostics: “BLACK BOX” function for saving more than 100 machine variables for a rapid trouble-shooting.

Fully in-house software developed by Mitsubishi Electric Hydronics & IT Cooling Systems.

The keypad W3000 Compact, as standard equipment, features function controls and a complete LCD display for viewing data and activating the unit, via a multilevel menu, with settable display language.

Electrical panel

4 W3000TE control software, COMPACT keyboard.

4 Numbered cables (std on 2 compressors).

4 Automatic circuit breakers (std on 2 compressors).User side heat exchanger

4 Brazed plate heat exchanger.

4 Efficient heat exchange with a small footprint.

4 Dual circuit design for 4 compressor units.

4 More air flow with a smaller diameter.

4 Increased energy cost savings thanks to higher efficiency at the operating point.

4 Reduced sound levels at partial loads.

4 Precise control of airflow.

4 Lower consumption in every working condition provides better seasonal efficiency in accordance with ErP Directive.

4 No energy lost due to the transmission (belts and pulleys), thanks to the fan being directly coupled with the motor; economical because no maintenance is needed.

4 Continuous speed control and easy adaptation to varying operational conditions.

Easily Removable Casing

Fixed speed scroll compressors

4 Base and frame in hot-galvanized steel sheet.

4 Panels are easy to remove for quick and easy access to all inner components.

4 The self-supporting frame is built to guarantee maximum accessibility for servicing and maintenance operations.

4 Total weather resistance.

Designed for superior efficiency and performance

4 Single circuit unit - 2 compressors.

4 Dual circuit unit - 4 compressors.

Innovative Wi-Fi interface for an easy and enhanced unit management.

As an option, the direct control over the units comes through the innovative KIPLink interface. Based on Wi-Fi technology, KIPLink gets rid of the standard keyboard and allows you to

operate the unit directly from a mobile device (smartphone, tablet, notebook) just by scanning the QR code on the side of the unit.4 Communication based on Wi-Fi technology (no internet connection needed).4 User-friendly components monitoring.4 Real-time graphs and key trends.

KIPLink USER INTERFACE

CENTRIFUGAL PLUG FAN WITH EC MOTOR

POW

ER C

ONSU

MPT

ION

FAN SPEED

AC motorvoltage controlled

AC motorcontrolled by vfd

EC motor

-63% -55%

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CHILLERSIT COOLING

COILS AND COATINGS

a Excellent resistance to UV rays

alkalinecleaning

deionizedwater rinse

E-coattreatment

E- coating process

Finalrinse

Ovenbake

UVtopcoat

Al - E-coating

Al - Regular

MICROCHANNEL COILS

3120 hSWAAT test

(ASTM G85-02 A3)

RC units are also suitable for installation in the most critical environments. In particularly extreme situations, the corrosive activity of air pollutants may seriously damage the coils, putting the unit at risk or causing the refrigerant to leak into the environment.

Mitsubishi Electric offers a special e-coating treatment.Carried out by means of an electrolytic bath, it ensures long-lasting resistance to atmospheric agents and long-term protection of the unit’s key component.

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HYDRONIC MODULES AND FLOW CONTROLS

/ 76

NR-C-Z units are available with two hydronic configurations:

4 factory-mounted complete pump group, which optimizes hydraulic and electrical installation space, time and costs.

4 or with terminals to control the external pumps with the unit control logic.

VARIABLE PRIMARY FLOWVPF CONTROL LOGIC

The VPF control series (Variable Primary Flow) does not only adjust the pump speed on the basis of the plant’s thermal load, but also dynamically optimizes the unit’s thermoregulation for variable flow operation, thus ensuring both the highest pump energy savings and chiller stable operation.

VPF: constant ∆P on the plant side For systems with only the primary circuit.

VPF.D: constant ∆T on the plant sideFor systems with primary and secondary circuits separated by a hydraulic decoupler.

1 or 2 pumps (duty/standby) provide low or high head (available head approx. 100 or 200kPa).

FACTORY MOUNTED PUMP GROUP

Fixed Speed (2 pole motors)

Variable speedEC motor (2 pole motors)

Single-head in-line pump

Single-head in-line pump

twin-head in-line pump

twin-head in-line pump

4 Low head

4 High head

4 Low head

Speed regulation Available HeadType

The unit controls the activation of 1 or 2 external pumps

CONNECTIONS FOR THE MANAGEMENT OF EXTERNAL PUMPS

The unit is supplied with 1 or 2 relays that control the activation of 1 or 2 external pumps (duty / standby) via ON / OFF signals.

The unit is supplied with 1 or 2 relays and a contact with signal modulating 0-10V that controls the activation and the speed of 1 or 2 external pumps with variable speed.

Modulating signal (1 or 2 pumps)ON / OFF signal (1 or 2 pumps)

NR-C-Z 0072-1104Chiller, air source for indoor installation17-281 kW

CHILLERSIT COOLING

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NR-C-Z / K 0232 0272 0302 0402 0452 0502 0602Power supply V/ph/Hz 400/3/50 400/3/50 400/3/50 400/3/50 400/3/50 400/3/50 400/3/50PERFORMANCECOOLING ONLY (GROSS VALUE)Cooling capacity (1) kW 58,09 66,80 75,49 97,63 110,0 125,0 155,7Total power input (1) kW 21,20 23,41 27,78 35,09 40,24 46,00 58,51EER (1) kW/kW 2,741 2,855 2,716 2,781 2,736 2,717 2,662COOLING ONLY (EN14511 VALUE)Cooling capacity (2)(3) kW 58,00 66,70 75,40 97,50 109,9 124,8 155,4EER (2)(3) kW/kW 2,900 3,050 2,880 2,960 2,890 2,870 2,810Cooling energy class - - - - - - -SEPR HT (4)(5) 5,11 5,45 5,11 5,21 5,01 5,00 5,06COOLING ONLY (GROSS VALUE)16°C/10°CCooling capacity (6) 63,39 72,99 82,35 106,9 120,1 136,3 169,9Total power input (6) kW 21,68 23,91 28,42 36,02 41,34 47,17 60,12EER (6) kW/kW 2,922 3,054 2,901 2,969 2,908 2,888 2,82723°C/15°CCooling capacity (7) 72,82 84,05 94,64 123,5 138,1 156,5 195,3Total power input (7) kW 22,55 24,84 29,57 37,75 43,38 49,34 63,18EER (7) kW/kW 3,221 3,387 3,196 3,276 3,182 3,174 3,090EXCHANGERSHEAT EXCHANGER USER SIDE IN COOLINGWater flow (2) l/s 2,778 3,194 3,610 4,669 5,262 5,978 7,445Pressure drop at the heat exchanger (2)(3) kPa 25,6 25,3 25,9 25,3 25,4 25,4 25,6REFRIGERANT CIRCUITCompressors nr. N° 2 2 2 2 2 2 2No. Circuits N° 1 1 1 1 1 1 1Refrigerant charge kg 9,40 10,7 11,1 14,1 14,8 18,6 20,0NOISE LEVELSound Pressure (8) dB(A) 55 51 55 52 53 59 56Sound power level in cooling (9)(10) dB(A) 87 83 87 84 85 91 88SIZE AND WEIGHTA (11) mm 2480 2480 2480 2980 2980 3970 3970B (11) mm 1100 1100 1100 1260 1260 1260 1260H (11) mm 2100 2100 2100 2100 2100 2100 2100Operating weight (11) kg 740 800 820 1080 1110 1290 1380

NR-C-Z / K 0072 0092 0102 0122 0152 0182 0202Power supply V/ph/Hz 400/3/50 400/3/50 400/3/50 400/3/50 400/3/50 400/3/50 400/3/50PERFORMANCECOOLING ONLY (GROSS VALUE)Cooling capacity (1) kW 17,76 22,48 26,53 30,29 38,46 45,45 51,78Total power input (1) kW 6,520 8,660 9,440 11,18 13,54 15,48 18,39EER (1) kW/kW 2,730 2,598 2,807 2,705 2,852 2,935 2,815COOLING ONLY (EN14511 VALUE)Cooling capacity (2)(3) kW 17,70 22,40 26,50 30,20 38,40 45,40 51,70EER (2)(3) kW/kW 2,900 2,740 3,020 2,880 3,040 3,160 3,000Cooling energy class - - - - - - -SEPR HT (4)(5) 5,65 5,42 5,96 5,54 5,55 5,50 5,34COOLING ONLY (GROSS VALUE)16°C/10°CCooling capacity (6) 19,57 24,78 29,12 33,20 42,13 49,81 56,66Total power input (6) kW 6,575 8,828 9,613 11,44 13,77 15,75 18,76EER (6) kW/kW 2,979 2,809 3,028 2,912 3,051 3,152 3,01623°C/15°CCooling capacity (7) 22,80 28,89 33,75 38,40 48,69 57,64 65,46Total power input (7) kW 6,685 9,149 9,946 11,93 14,17 16,26 19,47EER (7) kW/kW 3,408 3,158 3,387 3,227 3,430 3,534 3,359EXCHANGERSHEAT EXCHANGER USER SIDE IN COOLINGWater flow (2) l/s 0,849 1,075 1,269 1,449 1,839 2,173 2,476Pressure drop at the heat exchanger (2)(3) kPa 24,8 24,4 25,1 25,5 27,3 24,9 25,3REFRIGERANT CIRCUITCompressors nr N° 2 2 2 2 2 2 2No. Circuits N° 1 1 1 1 1 1 1Refrigerant charge kg 3,50 3,70 4,10 4,20 7,30 8,30 9,20NOISE LEVELSound Pressure (8) dB(A) 51 56 47 48 56 53 54Sound power level in cooling (9)(10) dB(A) 83 88 79 80 88 85 86SIZE AND WEIGHTA (11) mm 1500 1500 1500 1500 2480 2480 2480B (11) mm 900 900 900 900 1100 1100 1100H (11) mm 1910 1910 1910 1910 2100 2100 2100Operating weight (11) kg 380 380 400 410 680 710 720

NX-C / A 0702 0524 0604 0704 0804 0904 1004Alimentazione elettrica V/ph/Hz 400/3/50 400/3/50 400/3/50 400/3/50 400/3/50 400/3/50 400/3/50PRESTAZIONIREFRIGERAZIONE (GROSS VALUE)Potenza frigorifera (1) kW 180 127 150 174 193 225 251Potenza assorbita totale (1) kW 65,3 46,5 55,1 62,3 70,7 81,6 91,1EER (1) kW/kW 2,76 2,74 2,72 2,78 2,74 2,76 2,76ESEER (1) kW/kW 4,09 4,19 4,13 4,31 4,15 4,17 4,12REFRIGERAZIONE (EN14511 VALUE)Potenza frigorifera (1)(2) kW 180 127 150 173 193 224 250EER (1)(2) kW/kW 2,78 2,75 2,73 2,80 2,75 2,77 2,76ESEER (1)(2) kW/kW 4,05 4,07 4,01 4,20 4,05 4,07 4,02Classe EUROVENT A A A A A A AEFFICIENZA ENERGETICAEFFICIENZA STAGIONALE IN RAFFREDDAMENTO (Reg. UE 2016/2281)Refrigerazione d'ambientePrated,c (6) kW 180 127 150 173 193 224 250SEER (6)(7) 4,00 3,98 3,96 4,16 4,01 4,06 3,96Rendimento ηs (6)(8) % 157 156 155 163 157 159 155SCAMBIATORISCAMBIATORE UTENZA IN REFRIGERAZIONEPortata (1) l/s 8,63 6,08 7,17 8,30 9,25 10,76 12,01Perdita di carico (1) kPa 27,0 25,6 27,6 26,4 26,7 27,3 27,3CIRCUITO FRIGORIFERON. compressori N° 2 4 4 4 4 4 4N. circuiti N° 1 2 2 2 2 2 2Carica refrigerante kg 25,3 21,0 23,1 27,6 29,7 82,6 84,3VENTILATORIPortata d' aria nominale m³/s 18,61 13,06 15,56 19,72 19,72 21,94 21,94Prevalenza utile nominale Pa 30 30 30 30 30 30 30LIVELLI SONORIPotenza sonora in refrigerazione (3)(4) dB(A) 96 86 89 88 88 91 91DIMENSIONI E PESIA (5) mm 5670 3970 4670 5670 5670 5670 5670B (5) mm 1260 1260 1260 1260 1260 1260 1260H (5) mm 2100 2100 2100 2100 2100 2100 2100Peso in funzionamento (5) kg 2058 1564 1743 2217 2296 2453 2510Note:1 Acqua scambiatore freddo lato utenza (in/out) 12°C/7°C; Aria scambiatore lato sorgente (in) 35°C.2 Valori riferiti alla normativa EN14511-3:2013.3 Potenza sonora totale dei ventilatori come dichiarata dal costruttore riferita alla velocità di rotazione nominale e prevalenza statica utile nominale.4 Potenza sonora in refrigerazione, outdoors.5 Unità in configurazione ed esecuzione standard, priva di accessori opzionali.6 Efficienza energetica stagionale del raffreddamento d’ambiente [REGOLAMENTO (UE) N. 2016/2281]7 Indice di efficienza energetica stagionale8 Efficienza energetica stagionale del raffreddamento d'ambienteLe unità, evidenziate nella presente pubblicazione, contengono gas fluorurato HFC R410A [GWP100 2088] ad effetto serra.Dati certificati in EUROVENT

7

VPF VAR. PRIM. FLOW

COOLING ENERGY CLASS

SHELL & TUBES AXIAL SCREW

HFO1234zeRPLATES

PLUG FAN

SCROLLCOOLING

HFC R-410AR

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NR-C-Z / K 0524 0604 0704 0904 1004 1104Power supply V/ph/Hz 400/3/50 400/3/50 400/3/50 400/3/50 400/3/50 400/3/50PERFORMANCECOOLING ONLY (GROSS VALUE)Cooling capacity (1) kW 127,2 148,4 171,2 220,1 245,7 281,7Total power input (1) kW 49,02 55,46 65,44 80,49 91,18 101,8EER (1) kW/kW 2,596 2,674 2,618 2,734 2,694 2,767COOLING ONLY (EN14511 VALUE)Cooling capacity (2)(3) kW 126,9 148,2 170,9 219,7 245,4 281,4EER (2)(3) kW/kW 2,730 2,820 2,760 2,890 2,840 2,900Cooling energy class - - - - - -SEPR HT (4)(5) 5,07 5,14 5,00 5,19 5,10 5,23COOLING ONLY (GROSS VALUE)16°C/10°CCooling capacity (6) 138,6 161,8 187,0 240,4 267,7 307,4Total power input (6) kW 50,19 56,83 67,11 82,67 93,65 104,5EER (6) kW/kW 2,761 2,849 2,787 2,907 2,857 2,94223°C/15°CCooling capacity (7) 158,9 185,6 215,3 276,5 306,9 353,2Total power input (7) kW 52,33 59,31 70,19 86,73 98,24 109,7EER (7) kW/kW 3,038 3,130 3,067 3,189 3,125 3,220EXCHANGERSHEAT EXCHANGER USER SIDE IN COOLINGWater flow (2) l/s 6,080 7,098 8,188 10,52 11,75 13,47Pressure drop at the heat exchanger (2)(3) kPa 25,6 27,0 25,7 26,1 26,1 23,5REFRIGERANT CIRCUITCompressors nr. N° 4 4 4 4 4 4No. Circuits N° 2 2 2 2 2 2Refrigerant charge kg 21,0 22,3 26,3 32,3 34,6 86,0NOISE LEVELSound Pressure (8) dB(A) 60 55 60 56 58 58Sound power level in cooling (9)(10) dB(A) 92 87 92 88 90 90SIZE AND WEIGHTA (11) mm 3970 3970 4670 5670 5670 5670B (11) mm 1260 1260 1260 1260 1260 1260H (11) mm 2100 2100 2100 2100 2100 2100Operating weight (11) kg 1250 1350 1640 2060 2140 2530

Notes:1 Plant (side) cooling exchanger water (in/out) 12°C/7°C;

Source (side) heat exchanger air (in) 35°C.2 Plant (side) cooling exchanger water (in/out) 12°C/7°C;

Source (side) heat exchanger air (in) 35°C3 Values in compliance with EN145114 Seasonal energy efficiency ratio5 Seasonal energy efficiency of high temperature process cooling

[REGULATION (EU) N. 2016/2281]6 Plant (side) cooling exchanger water (in/out) 16°C/ 10°C;

Source (side) heat exchanger air (in) 35°C.

7 Plant (side) cooling exchanger water (in/out) 23°C/ 15°C; Source (side) heat exchanger air (in) 35°C.

8 Average sound pressure level at 10m distance, unit in a free field on a reflective surface; non-binding value calculated from the sound power level.

9 Sound power on the basis of measurements taken in compliance with ISO 9614.10 Sound power level in cooling, outdoors.11 Unit in standard configuration, without optional accessories.The units highlighted in this publication contain R410A [GWP100 2088] fluorinatedgreenhouse gases.

Data certified in EUROVENT


CHILLERSIT COOLING

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NR-C-Z / SL-K 0072 0092 0102 0122 0152 0182 0202Power supply V/ph/Hz 400/3/50 400/3/50 400/3/50 400/3/50 400/3/50 400/3/50 400/3/50PERFORMANCECOOLING ONLY (GROSS VALUE)Cooling capacity (1) kW 17,43 21,89 25,62 29,28 37,48 44,40 51,20Total power input (1) kW 6,300 8,240 9,400 11,13 13,06 14,97 17,86EER (1) kW/kW 2,762 2,658 2,723 2,640 2,863 2,960 2,860COOLING ONLY (EN14511 VALUE)Cooling capacity (2)(3) kW 17,40 21,80 25,60 29,20 37,40 44,30 51,10EER (2)(3) kW/kW 2,960 2,810 2,870 2,760 3,050 3,170 3,040Cooling energy class - - - - - - -SEPR HT (4)(5) 5,90 5,74 5,89 5,53 5,58 5,71 5,55COOLING ONLY (GROSS VALUE)16°C/10°CCooling capacity (6) 19,19 24,08 28,05 32,02 40,97 48,57 55,92Total power input (6) kW 6,371 8,439 9,622 11,44 13,34 15,29 18,29EER (6) kW/kW 3,014 2,855 2,921 2,921 3,083 3,176 3,05523°C/15°CCooling capacity (7) 22,31 27,97 32,38 36,90 47,19 56,02 64,35Total power input (7) kW 6,509 8,817 10,05 12,03 13,84 15,88 19,08EER (7) kW/kW 3,425 3,175 3,240 3,075 3,420 3,522 3,372EXCHANGERSHEAT EXCHANGER USER SIDE IN COOLINGWater flow (2) l/s 0,834 1,047 1,225 1,400 1,792 2,123 2,448Pressure drop at the heat exchanger (2)(3) kPa 23,9 23,1 23,5 23,9 25,9 23,8 24,8REFRIGERANT CIRCUITCompressors nr. N° 2 2 2 2 2 2 2No. Circuits N° 1 1 1 1 1 1 1Refrigerant charge kg 3,50 3,70 6,80 7,00 7,30 8,30 9,20NOISE LEVELSound Pressure (8) dB(A) 36 39 39 41 44 42 44Sound power level in cooling (9)(10) dB(A) 68 71 71 73 76 74 76SIZE AND WEIGHTA (11) mm 1500 1500 2480 2480 2480 2480 2480B (11) mm 900 900 1100 1100 1100 1100 1100H (11) mm 1910 1910 2100 2100 2100 2100 2100Operating weight (11) kg 450 450 690 700 730 790 790



7

VPF VAR. PRIM. FLOW



HFO1234zeRPLATES

PLUG FAN

SCROLLCOOLING

HFC R-410AR

/ 1110












CHILLERSIT COOLING

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NR-C-Z / A 0072 0092 0102 0122 0152 0182 0202 0232Power supply V/ph/Hz 400/3/50 400/3/50 400/3/50 400/3/50 400/3/50 400/3/50 400/3/50 400/3/50PERFORMANCECOOLING ONLY (GROSS VALUE)Cooling capacity (1) kW 18,11 22,91 27,39 31,64 38,83 46,00 53,05 59,17Total power input (1) kW 6,180 8,070 9,080 10,82 13,12 14,97 17,79 20,44EER (1) kW/kW 2,929 2,838 3,018 2,926 2,962 3,067 2,978 2,902COOLING ONLY (EN14511 VALUE)Cooling capacity (2)(3) kW 18,10 22,90 27,30 31,60 38,70 45,90 52,90 59,10EER (2)(3) kW/kW 3,220 3,080 3,300 3,170 3,200 3,370 3,230 3,110Cooling energy class - - - - - - -SEPR HT (4)(5) 6,15 6,02 6,29 5,97 5,85 5,83 5,72 5,53COOLING ONLY (GROSS VALUE)16°C/10°CCooling capacity (6) 19,99 25,29 30,14 34,78 42,57 50,46 58,10 64,66Total power input (6) kW 6,219 8,216 9,208 11,01 13,33 15,22 18,13 20,87EER (6) kW/kW 3,215 3,078 3,268 3,164 3,203 3,322 3,210 3,09623°C/15°CCooling capacity (7) 23,35 29,54 35,09 40,45 49,26 58,48 67,16 74,49Total power input (7) kW 6,301 8,498 9,463 11,38 13,69 15,68 18,78 21,66EER (7) kW/kW 3,714 3,471 3,710 3,553 3,599 3,726 3,574 3,433EXCHANGERSHEAT EXCHANGER USER SIDE IN COOLINGWater flow (2) l/s 0,866 1,096 1,310 1,513 1,857 2,200 2,537 2,830Pressure drop at the heat exchanger (2)(3) kPa 25,8 25,3 26,8 27,9 27,8 25,5 26,6 26,6REFRIGERANT CIRCUITCompressors nr. N° 2 2 2 2 2 2 2 2No. Circuits N° 1 1 1 1 1 1 1 1Refrigerant charge kg 3,50 3,70 6,80 7,00 7,30 8,30 9,20 9,40NOISE LEVELSound Pressure (8) dB(A) 74 46 52 54 51 49 50 52Sound power level in cooling (9)(10) dB(A) 74 78 84 86 83 81 82 84SIZE AND WEIGHTA (11) mm 1500 1500 2480 2480 2480 2480 2480 2480B (11) mm 900 900 1100 1100 1100 1100 1100 1100H (11) mm 1910 1910 2100 2100 2100 2100 2100 2100Operating weight (11) kg 450 450 690 700 730 790 790 810

NR-C-Z / A 0272 0302 0352 0402 0452 0502 0552 0602Power supply V/ph/Hz 400/3/50 400/3/50 400/3/50 400/3/50 400/3/50 400/3/50 400/3/50 400/3/50PERFORMANCECOOLING ONLY (GROSS VALUE)Cooling capacity (1) kW 67,76 77,18 87,21 99,82 113,0 126,1 141,0 158,5Total power input (1) kW 23,65 26,20 30,54 33,75 38,57 43,51 50,90 58,70EER (1) kW/kW 2,873 2,947 2,859 2,953 2,927 2,899 2,770 2,700COOLING ONLY (EN14511 VALUE)Cooling capacity (2)(3) kW 67,60 77,00 87,10 99,60 112,8 125,8 140,7 158,2EER (2)(3) kW/kW 3,080 3,170 3,050 3,190 3,130 3,090 2,930 2,860Cooling energy class - - - - - - - -SEPR HT (4)(5) 5,52 5,59 5,37 5,54 5,44 5,34 5,15 5,09COOLING ONLY (GROSS VALUE)16°C/10°CCooling capacity (6) 74,13 84,38 95,43 109,5 123,5 137,5 153,9 173,2Total power input (6) kW 24,11 26,76 31,28 34,58 39,55 44,64 52,27 60,18EER (6) kW/kW 3,075 3,149 3,048 3,165 3,119 3,083 2,943 2,87723°C/15°CCooling capacity (7) 85,56 97,34 110,2 126,8 142,5 158,0 176,8 199,6Total power input (7) kW 24,95 27,78 32,65 36,13 41,38 46,74 54,84 63,01EER (7) kW/kW 3,438 3,500 3,380 3,512 3,442 3,383 3,226 3,168EXCHANGERSHEAT EXCHANGER USER SIDE IN COOLINGWater flow (2) l/s 3,240 3,691 4,171 4,774 5,402 6,028 6,742 7,580Pressure drop at the heat exchanger (2)(3) kPa 26,0 27,1 26,7 26,5 26,7 25,9 26,1 26,5REFRIGERANT CIRCUITCompressors nr. N° 2 2 2 2 2 2 2 2No. Circuits N° 1 1 1 1 1 1 1 1Refrigerant charge kg 11,6 12,0 12,8 16,8 17,3 18,6 19,2 21,1NOISE LEVELSound Pressure (8) dB(A) 55 50 51 50 51 52 54 59Sound power level in cooling (9)(10) dB(A) 87 82 83 82 83 84 86 91SIZE AND WEIGHTA (11) mm 2980 2980 2980 3970 3970 3970 3970 4670B (11) mm 1260 1260 1260 1260 1260 1260 1260 1260H (11) mm 2100 2100 2100 2100 2100 2100 2100 2100Operating weight (11) kg 930 980 1060 1220 1380 1400 1430 1610

VPF VAR. PRIM. FLOW



HFO1234zeRPLATES

PLUG FAN

SCROLLCOOLING

HFC R-410AR

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NR-C-Z / A 0702 0524 0604 0704 0804 0904 1004Power supply V/ph/Hz 400/3/50 400/3/50 400/3/50 400/3/50 400/3/50 400/3/50 400/3/50PERFORMANCECOOLING ONLY (GROSS VALUE)Cooling capacity (1) kW 180,4 127,2 150,0 173,5 193,4 225,0 251,1Total power input (1) kW 67,15 46,22 54,47 61,81 70,18 77,69 87,12EER (1) kW/kW 2,685 2,753 2,752 2,807 2,755 2,896 2,883COOLING ONLY (EN14511 VALUE)Cooling capacity (2)(3) kW 180,1 126,9 149,8 173,2 193,1 224,6 250,8EER (2)(3) kW/kW 2,840 2,920 2,910 3,000 2,920 3,060 3,030Cooling energy class - - - - - - -SEPR HT (4)(5) 5,00 5,39 5,28 5,47 5,27 5,45 5,32COOLING ONLY (GROSS VALUE)16°C/10°CCooling capacity (6) 197,0 138,6 163,6 189,8 211,7 246,3 273,9Total power input (6) kW 68,94 47,39 55,78 63,37 72,13 79,51 89,44EER (6) kW/kW 2,859 2,924 2,932 2,994 2,936 3,098 3,06423°C/15°CCooling capacity (7) 226,7 158,9 188,0 218,8 244,4 284,6 314,6Total power input (7) kW 72,29 49,53 58,16 66,25 75,76 82,86 93,76EER (7) kW/kW 3,136 3,210 3,230 3,300 3,224 3,433 3,354EXCHANGERSHEAT EXCHANGER USER SIDE IN COOLINGWater flow (2) l/s 8,628 6,080 7,174 8,298 9,249 10,76 12,01Pressure drop at the heat exchanger (2)(3) kPa 27,0 25,6 27,6 26,4 27,6 27,3 27,3REFRIGERANT CIRCUITCompressors nr. N° 2 4 4 4 4 4 4No. Circuits N° 1 2 2 2 2 2 2Refrigerant charge kg 25,3 21,0 23,1 27,6 29,7 82,6 84,3NOISE LEVELSound Pressure (8) dB(A) 61 52 55 54 54 56 56Sound power level in cooling (9)(10) dB(A) 93 84 87 86 86 88 88SIZE AND WEIGHTA (11) mm 5670 3970 4670 5670 5670 5670 5670B (11) mm 1260 1260 1260 1260 1260 1260 1260H (11) mm 2100 2100 2100 2100 2100 2100 2100Operating weight (11) kg 1790 1370 1550 1960 2110 2550 2600










ProjectEni has been present in Congo since 1968. Eni and the Congo Republic signed some strategic agreements for the cooperation and the care of the hydrocarbon resources of the Country.

ChallengeConsidering the large Eni investment in Congo, it is so easy to understand the company’s need to enlarge their own headquarters in the country. The Pointe Noire location modernization started in 2012 and ended in 2014. The entire intervention was divided into two phases: the first one was based on the revamping of existing buildings, while the second one consists in the construction of a new edifice.

SolutionIn both steps Eni has chosen Mitsubishi Electric as its partner for the air conditioning, both companies sharing an attention to sustainability and a focus on environmental respect. The following solutions were selected for the HVAC plant: 1 air handling unit, 257 fan coils and more than 10 units belonging to the HPAC range. Moreover, two scroll compressor chillers with centrifugal fans serve the indoor close control units and the indoor office spaces.

Plant type: HPAC SystemCooling capacity: 672 kWInstalled machines: 4x direct expansion close control units, 9x chilled water close control units, 257x fan coil units, 1x air handling unit, 2x scroll compressor chillersInstaller: CEU

ENI CONGO2015 Pointe Noire - Congo

CHILLERSIT COOLING

“ BY FAR THE BEST PROOF IS EXPERIENCE ”

Sir Francis Bacon British Philosopher

(1561 - 1626)

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DEDIPOWER READING DATA CENTRE2010 Reading - Great Britain

Application: Data CenterPlant type: Hydronic SystemCooling capacity: 1015 kWInstalled machines: 2x chiller with scroll compressors, 1x free-cooling chiller with scroll compressor

ADLERSHOF STUDIO HALL2006 Berlin - Germany

Application: TelecommunicationsPlant type: Hydronic SystemCooling capacity: 150 kWInstalled machines: 1x chiller with scroll compressor

ASCO TLC DATA CENTRE, TIER III2018 Treviso - Italy

Application: Data CenterPlant type: HPAC SystemCooling capacity: 861 kWInstalled machines: 6x chilled water close control units, 2x free-cooling chillers with scroll compressors

CLARO DATA CENTER - CARTAGENA2013 Cartagena - Colombia

Application: Data CenterPlant type: HPAC SystemCooling capacity: 215 kWInstalled machines: 4x chilled water rack cooling units, 1x chiller with scroll compressor

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MORE THAN 2000 PROJECTS ALL OVER THE WORLD.

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air-cooled chillers with scroll compressors and centrifugal fans … · 2021. 1. 18. · adoption...

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