Saving the world and reducing energy costswith advanced CO2 systems

Efficienthigh efficiency compressors and innovative design of circuit

Reliableextended life-time due to high-quality components 

Innovativeoptions like Enjector and optimized heat recovery

Flexiblevarious options available, special layouts made on request

Strengthsof our ref packs

CO2 competence from top of the world

"CO2 system – good for nature and your economy"

Huurre ECO® is a joint venture of Huurre Group and Enex, the leading expert in CO2-based retail refrigeration systems in Europe. Huurre ECO® and Enex have already implemented hundreds of CO2 systems in Austria, Belgium, China, Finland, Hungary, Ireland, Italy, Sweden, Switzerland and UK.

Enex and Huurre ECO® offer consulting and design services in the area of more energy-efficient and environmentally-friendly refrigeration solutions. Our local organisation will also install and service the CO2-plants.

Innovative concept – EnjectorNew way of improving efficiency of CO2 refrigeration system

Enjector is a new energy-saving option for CO2 systems. It consists on a liquid recirculation method based on an ejector, a device recovering expansion work. The energy saving potential, which can be reached all year round, varies from 10 to 15%.

Basically it is a pumped circulation system with-out the complication of a refrigerant pump. It combines the advantages of high efficiency overfeed systems, with no superheat, with the simplicity of a dry ex system:

• energy saving potential 12–15 % all year round

• low refrigerant charge

• no additional moving parts for fluid circulation

• full protection against liquid at suction and oil slugs, the most frequent reason for compressors breakdown

• increased safety for the shop

• Simple and reliable: no additional moving parts• Full protection against liquid suction and oil slugs• Long compressor life

Motive flow from condenser/gas cooler (i.e. 70 bar)

Discharge flowto liquid receiver (i.e. 36 bar)

Suction flow liquid/flow from low pressure side(i.e. 30 bar)

ElbaElba family is designed for large supermarkets and hypermarkets. Elba has high efficiency due to improved booster design and easy service because all components are easily accessible.

Elba has complete protection against risk of liquid at compressor suction and complete automatic back up of critical components.

Options• Heat recovery for space and/or sanitary water heating • Design pressure 60 bar LP/IP side • Backup pressure maintaining unit • Liquid level visual indicator and/or liquid level transmitter • Integrated water-cooled condenser• Enjector

® for higher efficiency and increased capacity

• Economizer for efficient operation under high ambient temperature • Customer specified control system

High efficiency CO2 refrigerating units and heat pumps

DravaDrava family is designed for small shops, convenience stores, hotels, restaurants and cafes. It combines efficiency with simplicity and has low sound level.

There are two different versions of Drava, one for indoor and one for outdoor installation. Drava is compact, has simple circuit, smooth operation with plug and play unit and electrical panel with web access.

Options• Heat recovery • Inverter on one MT / one LT compressor• Manometers panel • Electrical heater on liquid receiver (outdoor version)• Enjector

® for higher efficiency and increased capacity

• Customer specified control system

NevaNeva family is designed for medium size supermarkets having in mind the environment. Neva has low energy consumption and high efficiency due to improved booster design.

Neva has complete automatic back up of critical components for a trouble-free operation, low sound level and is easy to service.

Options• Heat recovery for space and sanitary water heating• Stepless capacity control with inverter on MT and LT• Design pressure 60 bar LP/IP side Backup pressure maintaining unit, also available with self contained battery and 24V DC supply Liquid level visual indicator and/or liquid level transmitter• Integrated water-cooled condenser• Enjector

® for higher efficiency and increased capacity

• Economizer for efficient operation under high ambient temperature • Customer specified control system

Whenever big quantities of hot water are needed or big peaks of absorption are present, the new Air Heat and Geo Heat family is the answer. It is specifically designed to produce hot water up to 90°C.

The high water temperature makes it possible to store it in a special vessel, so avoiding, as with normal heat pumps, to mix water at different temperatures. It is also possible to maximize operation during night time, taking advantage of lower energy costs.

Options• Evaporator with anti-corrosion treatment • Stratified water tank • Manometers panel • Electronic soft starter• Metallic filter for the finned coil • Very low noise version • Source side water pump (Geo Heat version)

Air Heat and Geo Heat Series

Neva

19,9

29,9

36,0

43,7

60,8

69,0

13,1

18,4

24,9

28,5

46,8

48,7

-

-

-

-

-

-

5,2

10,3

10,3

13,8

13,8

18,9

12,3

16,8

20,0

24,0

34,0

38,4

13,6

19,4

22,6

27,5

37,5

43,2

19,0

34,0

38,0

41,0

54,0

65,0

23,0

40,0

44,0

50,0

63,0

77,0

Model Number of compressorsMT/LT QMT (a)(c) QLT (b)(c)

3

3

3

3

3

3

3+1

3+2

3+2

3+2

3+2

3+2

Design dataPower in max I max

kW kW kW A mm mm mm CAT. kg

900

1200

1200

1400

1400

1400

1100

1400

1400

1400

1400

1400

III

III

III

IV

IV

IV

III

III

III

IV

IV

IV

1700

1700

1700

1700

1700

1700

1900

1900

1900

1900

1900

1900

800

800

800

800

800

800

800

800

800

800

800

800

3100

3100

3100

3300

3300

3300

3100

3100

3100

3300

3300

3300

65

2x65

2x65

200

200

200

65

2x65

2x65

200

200

200

WeightDimensions of unit

E5N-9

E5N-15

E5N-17

E5N-21

E5N-27

E5N-30

E5N-B-9/3

E5N-B-15/6

E5N-B-17/6

E5N-B-21/8

E5N-B-27/8

E5N-B-30/11

(a) Evap -8°C / Ambient 30°C (b) Evap -34°C liquid 0°C -Electrical supply 400V/3 Ph/50 Hz (c) data with one compressor 60 Hz (standard inverter)

(a) Nominal capacity MT: evaporating temperature -8°C/Ambient 30°C (b) Nominal capacity LT: evaporating temperature -35°C/Liquid 0°C (c) Min/Max capacity with inverter option (d) Capacity with LT max

(a) Evap -8°C / Ambient 30°C (b) Evap -34°C / liquid 0°C Electrical supply 400V/3 Ph/50 Hz (c) data with one compressor 60 Hz (standard inverter) (d) different size of liquid receiver on request. Detailed performance data available on request.

(a) AirHeat Nominal capacity QthNOM: water inlet/outlet 15/70°C - Ambient 7°C (b) GeoHeat Nominal capacity QthNOM: water inlet/outlet 10/70°C - Source tempe rature 15°C

Liquid receiverVolume (l)

A B H

Elba

82,3

93,2

120,1

108,0

157,7

195,5

56,0

66,9

84,1

71,9

111,7

149,3

-

-

-

-

-

-

20,1

20,1

27,0

27,5

35,6

35,6

40,0

45,4

58,6

52,7

76,9

95,2

45,8

51,0

66,2

60,4

86,6

104,9

72

77

102

96

136

169

89

95

125

118

163

197

Model Number of compressorsMT/LT QMT (a)(c) QLT (b)(c)

3

3

3

4

4

5

3+3

3+3

3+3

4+3

4+3

5+3

Design dataPower in max I max

1700

1700

1800

2200

2200

2500

2000

2000

2100

2600

2600

2800

2100

2100

2100

2400

2400

2400

2100

2100

2100

2400

2400

2400

1000/1200

1000/1200

1000/1200

1000/1200

1000/1200

1000/1200

1000/1200

1000/1200

1000/1200

1000/1200

1000/1200

1000/1200

3900

3900

3900

4200

4200

4700

3900

3900

3900

4200

4200

4700

280

280

280

350

350

350

280

280

280

350

350

350

WeightDimensions of unit

E4N 35

E4N 42

E4N 53

E4N 47

E4N 71

E4N 89

E4N-B-35/12

E4N-B-41/12

E4N-B-53/16

E4N-B-47/16

E4N-B-71/20

E4N-B-89/20

Liquid receiverVolume (l)

A B HkW kW kW A mm mm mm kg

Drava

2x CD360M

3x CD360M

3x CD360M+ 1x CD360M

3,0

3,0

3,0

-

-

2,5

15,2

22,7

17,0 (d)

-

-

6

Model Number of compressors/Type

Electrical design dataPower in max I max

1000

1100

1200

8

12

14

17

26

30

Weight

SM6S

SM9S

SM9S-B

kW

Min Max Min Max

kW kW A kg

QNOM MT (a)(c) QNOM LT (b)

16,5/3,9 (b)

26,1/4,0 (b)

49,1/4,0 (b)

14,6/3,5 (a)

23,1/3,6 (a)

43,5/3,7 (a)

Model

1

Electrical design dataPower in max I max

400

500

750

6

11

17

13

26

35

Weight

Air&Geo Heat 18

Air&Geo Heat 24

Air&Geo Heat 48

kWt / [ ] kWt / [ ]

PED.

kW A kg

QthNOM /COP (a) QthNOM /COP (b)

Air Heat and Geo Heat

Dimensions:

H: 2100 mm L: 2100 mm D: 800 mm

Dimensions:

H: 1450 mm L: 2100 mm D: 800 mm

Oudoor versionIndoor version

6 Stratified storage tank

5 high efficiency pump

4 expansion valve

3 double wall gas-cooler

2 heat exchanger

1 compressor

Stratified storage tank

Heat pump

Absorbed heat

from air or ground

Supply water

Huurre ECO OyTaivaltie 5FI-01610 VantaaFinlandTel. +358 20 555511www.huurre-eco.com

Enex s.r.l.Via Veneto31038 Padarnello di PaeseItalyTel. +39 0422 44 04 29www.enex-ref.com

Characteristics of CO2 as a refrigerant• no impact on the greenhouse effect (GWP = 1); no ozone depletion

• non toxic, non-flammable

• green profile bonuses

• no taxes on this refrigerant

• better heat transfer

• less energy consumption

• one refrigerant (transcritical)

• no charge limitation