DGN
DGN



DGN

Ceiling air cooler

7 - 80 kW

DHN1

Aircooler for industrial refrigeration

Large heat-exchanging surface

Many design types

DHN2

 

Info & Downloads

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Product Documentation

Info Operation and installation instructions

Application

  • Cold rooms
  • Refrigerated Warehouse
  • Sensitive Produce
  • Fruit and Vegetables
  • Meat, Fish, Poultry

DGN

Ceiling air cooler

Features

Air coolers are finned heat exchangers in which a working fluid heats up with heat absorption from the environment to be cooled, without changing the aggregate state. The units serve as components of a system, e.g. for conditioning the room air or cooling goods.

Evaporators are finned heat exchangers serving as components of a refrigeration system, in which liquid refrigerant evaporates with heat absorption from the environment to be cooled. The units are used e.g. in deep-freeze applications in food storage.

Advantages

  • Slimline design
  • Even air distribution
  • Low draught air level
  • Aligned tube pattern, large heat-exchanging surface
  • Many design types

Easy to Install

  • Mounted on pallet in installation position
  • Ceiling mounting brackets for easy installation
  • Empty tube for defrost sensor
  • Easy-to-remove side cover
  • Schrader valve on outlet
  • Fans wired on connection socket (optional)

Inspection and Cleaning

  • Hinged tray

High Operational Reliability and Leak-Safety

  • Proven Güntner floating coil principle (refrigerantcarrying tubes do not make contact with the casing,increases the heat exchanger’s service life)

Technical details

Heat Exchanger

  • Aligned tube pattern 50 x 50 mm (or 60 x 60 mm)
  • Special copper tubes for HFC, coolant and CO2
  • Stainless steel tubes for NH3
  • Surface-corrugated aluminium fins for high heat transfer

Casing

  • Corrosion-resistant aluminium alloy AlMg
  • From fan diameter 650 mm, galvanized steel
  • Powder-coated with RAL 9003

Tray

  • Corrosion-resistant aluminium alloy AlMg
  • Separate drip plate
  • Thermally-decoupled tray (condensation free)
  • Powder-coated with RAL 9003

Fans

  • Proven quality fans
  • Internal motor protection with thermocontacts
  • Fan diameter 400 mm: 230 V, 1~, 50 Hz or 60 Hz
  • Fan diameter from 450 mm: 400 V, 3~, 50 Hz or 60 Hz

Product Types / Refrigerant / Capacity

 

 

 

References

Mega salmon factory stays cool

Mega salmon factory stays cool

The world market for salmon products grows steadily. In line with this economic development, also the capacities of the meanwhile largest fish cannery for the processing of salmon grew so that its area now comprises 95,000 m²/1,022,572 ft². The cooling of manufacturing, order-picking and storage areas takes place with refrigeration components from Güntner.

 

Project description (222 KB)

Güntner heat exchangers for Swiss logistics distribution centre and wholesale bakery

Güntner heat exchangers for Swiss logistics distribution centre and wholesale bakery

Swiss retail merchant Coop’s largest logistics site in the Swiss canton of Aargau contributes significantly to the company’s vision to become CO2-neutral by 2023 in areas on which Coop can exert a direct influence. Efficient Güntner heat exchangers support this ambitious goal: They are used to cool storage and logistics areas and dissipate non-usable heat from the plant rooms.

 

Project description (387 KB)

Vegetables for the region of Moscow: Cooling efficient at high humidity

Vegetables for the region of Moscow: Cooling efficient at high humidity

In its new central vegetable warehouse in the region of Moscow, the wholesaler Moskovskij Kombinat established cold stores which are individually adjustable in terms of room temperature and relative humidity. Güntner air coolers and Güntner fluid coolers/dry coolers provide a consistently high quality of the fresh goods and an efficient heat dissipation on the 20.000 m² storage space.

 

Project description (872 KB)

Fine-tuned refrigeration - fine tuna

Fine-tuned refrigeration - fine tuna

Fish processing makes the highest demands on hygiene, corrosion resistance, ease of maintenance and longevity. Choosing the right equipment, it is even an economical solution.

 

Project description (2.88 MB)

Fresh and crunchy - Greengrow carrot storage

Fresh and crunchy - Greengrow carrot storage

During planning of a new store, many requirements have to be taken into account. What design should the air coolers have? And how to incorporate appropriate control options?

 

Project description (327 KB)

Energy efficiency at Fruchthansa

Energy efficiency at Fruchthansa

When building its new cold storage facility, Fruchthansa chose a holistic concept. It not only takes into account the preservation of fruit and vegetables in storage, but also optimal storage energy efficiency.

 

Project description (830 KB)

Media

Publications

Air coolers, air flow and temperature distribution in large cold stores

Air coolers, air flow and temperature distribution in large cold stores

Download

How the air throw of air coolers is influenced by the spatial geometry and by air cooling

How the air throw of air coolers is influenced by the spatial geometry and by air cooling

Download

Influence of heat exchanger design on dehumidification and frost formation

Influence of heat exchanger design on dehumidification and frost formation

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Sensible use of energy-saving fans

Sensible use of energy-saving fans

Download

Energy saving on the low-pressure side of a refrigerating plant

Energy saving on the low-pressure side of a refrigerating plant

Download

Tips

temperature in the deep-freeze room

temperature in the deep-freeze room

Download

subcooling and system efficiency

subcooling and system efficiency

Download

Videos

Accessory

  • Epoxy-resin coated fins
  • Fans wired on connection socket
  • Factory-fitted thermostatic expansion valve
  • Insulated tray Insulated fan plates
  • Core tubes made of stainless steel
  • Fins made of stainless steel
  • Casing and tray made of stainless steel

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