Industrial refrigeration

Whether frozen foods, freeze-dried fruits and vegetables or tempered cold stores – industrial refrigeration technology has a wide range of applications. Due to continuous developments, the requirements for availability, safety and environmental protection are subject to constant change. For example, with the "F-Gases Regulation", refrigerants such as ammonia and carbon dioxide are more frequently used. The regulation aims to reduce emissions of fluorinated greenhouse gases. As a result, the requirements for tightness and design of the corresponding components must be adjusted.

Solutions

Compact, lightweight and environmentally friendly

With the NIKKISO Non-Seal canned motor pump, LEWA offers suitable solutions in a wide variety of areas. From cold storage, cooling and freezing to pumps for hazardous areas.

Advantages of the NIKKISO Non-Seal canned motor pump in refrigeration technology:

  • Compact design
  • Easy installation
  • Extremely low noise level
  • High environmental friendliness due to conformity with TA Luft (Technical Instruction on Air Quality Control) 
  • High safety factor due to twin protecting shell
  • Advanced monitoring device for bearings (E-monitor)
  • Installation in hazardous areas

Typical fluids for cooling:

  • Carbon dioxide (CO2)
  • Ammonia (NH3)
  • Mixture of biphenyl and diphenyl ethers
  • Dibenzyltoluol
  • Different freon fluids, such as:
    • R-134a (C2H2F4
    • R-125 (CF3CHF2)
NIKKISO Non seal canned motor pump

Background

A technology for everyday life.

Refrigeration, modern coolants or tempered cold stores have become indispensable in our everyday life. Pumps are used in refrigeration technology at various points: in the food industry (cold storage, cooling and deep-freezing with natural and synthetic refrigerants), in the chemical industry (refrigeration systems) or for oil cooling systems for transformers.

For larger systems, the refrigerant is metered to the individual evaporators. The resulting pressure and the risk of icing pave the way for hermetically sealed pumps without shaft seals. During the return to the reservoir, the medium is condensed by the compressed and cooled refrigerant vapor in the compressor circuit and thus gets back to a liquid state

Industries

Pumps and Metering Systems for Distillation Plants and Applications in Refineries

Crude oil must be cleaned, separated, and converted (refined) until the final products suitable for sale are made (e.g., gas, diesel, heating oil, lubricants, propane, butane). LEWA supports you with pumps and metering systems, which are used in the refining process during chemical metering. Application with our products are distillation plants, coker, cracker, or visbreaker, for example. Ask our experts for more information!

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Chemical Pumps and Metering Packages for the Chemical Industry

When critical, environmentally hazardous, toxic, or flammable fluids and suspensions need to be reliably conveyed or metered in high-pressure processes, there is no alternative to hermetically sealed metering pumps, process diaphragm pumps, and metering systems from LEWA. Hermetically sealed LEWA pumps with pressures up to 1200 bar are the first choice for the production of chemical intermediate and end products. Contact our experts and let us advise you about your individual chemical pump or system solution!

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Pumps and Systems for the Food and Beverage Industry

LEWA supports producers and plant construction companies in the food and beverage industries with pumps and systems for homogenization and dispersion, as well as for other processing operations in the food industry. We work with you to plan all the important process-related operations, such as conveying, metering, mixing, heating, and cooling so that you can process your raw product cost-effectively.

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Pumps and Metering Systems for Other Industries

LEWA offers customized solutions and references for almost all industries in which processes require exact metering or the reliable conveyance of fluids. As specialists in fluid handling, we of course also have experience in areas outside of our key markets.

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Products

LEWA ecoflow® diaphragm metering pump

LEWA ecoflow diaphragm metering pump all around talent The ecoflow® diaphragm metering pump from LEWA is a true all-around talent in the field of metering and mixing and can be used in all industries.

Nikkiso Non-Seal® centrifugal canned motor pump

NIKKISO Non seal canned motor pump The NIKKISO Non-seal canned motor pump is perfectly suited for transfer and circulation tasks in the chemical industry. We are happy to help you make your selection.

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