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Chinaplas 2026German Exhibitors ONI-Wärmetrafo GmbH

ONI-Wärmetrafo GmbH

Booth number: HALL 2.1 - G35
www.oni.de/

About us

Customers in more than 70 countries worldwide rely on our energy-saving and reliable plants and systems. From consulting and planning to turnkey plant construction and downstream service, we offer our customers all services from a single source. Today, our range of products and systems extends from small and medium-sized enterprises to global corporations. We owe the success of our company to a steadily growing customer base that successfully reduces energy and production costs with our systems, thereby improving its competitiveness. Our unique system expertise, comprehensive range of products and services, and outstanding corporate performance and innovative strength have contributed to our inclusion in the encyclopedia of German world market leaders.

In addition, we were included by German Standards in the publication “BEST OF GERMAN INDUSTRY,” which was published in December 2023 by the Zeit publishing group.

ONI-Wärmetrafo GmbH - Headquarters in Lindlar, Germany

ONI-Wärmetrafo GmbH - Headquarters in Lindlar, Germany

ONI Temperature Control Technology Rhytemper GmbH - Großröhrsdorf, Germany

ONI Energy Saving Technology Co., Ltd., in Kunshan, China

Address

ONI Wärmetrafo GmbH
Niederhabbach 17
51789 Lindlar
Germany

E-mail: info@oni.de
Phone:  +49 2266 47480
Internet: www.oni.de/
ONI Energy Saving Technology Co., Ltd.
No.329, Jujin Rd, Zhang Pu Town
215321 Kunshan City, Jiangsu Province
China

E-mail: info@oni-china.cn
Phone:  +86 512 3662-5112
Internet: www.oni.de/standorte/
ONI Temperature Control Technology Rhytemper GmbH
Christian-Bürkert-Straße 4
01900 Großröhrsdorf
Germany

E-mail: info@oni-rhytemper.de
Phone:  +49 35952 4110-0
Internet: www.oni-rhytemper.de/

Contact person:

Guido Hamm
Sales Manager Asia-Pacific
E-mail: g.hamm@oni.de
Phone: +86 155 0613 0550

Products & Services

Ancillary Equipment
Other Machinery and Plant for Processing

From individual project consulting to precise planning and design to professional construction, installation, and comprehensive customer service, we offer you all services from a single source.

Our product range:

  • Cooling/refrigeration systems

  • Heat recovery

  • Air conditioning/ventilation systems

  • Battery storage technology

  • Ice storage

  • Rental cooling systems

  • Clean room technology

  • Compact coolers

  • Dry coolers

  • Modular energy centers

  • Temperature control systems

  • Energy optimization

  • Water treatment

  • Compressor supply

  • Project planning

  • Round-the-clock maintenance/service

ONI-AquaClean Water Treatment

ONI-AquaClean – Top cooling water quality without biocides

ONI-AquaClean ensures consistently high cooling water quality without the use of biocides. The innovative system reliably reduces biological contaminants such as bacteria, algae, and fungi, as well as solid particles – from coarse to fine grains – in a single process.

Ozonation and ultrafiltration significantly improve water quality in a short time, reduce corrosiveness, and considerably lower the need for chemicals and maintenance. The result: higher energy efficiency, greater operational and process reliability, and lower operating costs.

ONI-AquaClean Water Treatment

Use of ONI-AquaClean (before/after)

Efficient cooling systems for industrial applications

We plan, implement, and operate customized cooling and refrigeration systems for industrial processes. Our systems stand for high energy efficiency, maximum operational reliability, and durable plant technology. By using modern components, intelligent control technology, and holistic system concepts, we sustainably reduce energy consumption and operating costs.

Our solutions are individually tailored to the requirements of our customers and cover a power range from 5 to 150,000 kW – reliable, economical, and future-proof.

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Highly efficient modular cooling water energy center with heat recovery and industrial heat pump

Customized system design based on detailed on-site analysis: integration of free coolers, cooling towers, and chillers into an efficient overall system.

Energy-efficient cooling plant center with pump, piping, and control technology.

Containerized cooling system – compact, flexible, and quickly ready for use. Ideal for temporary or location-independent cooling requirements.

Needs-based and energy-efficient cleanroom systems

We plan and implement customized cleanroom systems for a wide range of industries—from plastics processing to pharmaceuticals, medicine, and food. Our services range from consulting and technical planning to complete ventilation equipment and turnkey, GMP-compliant handover.

Our modular cleanroom systems ensure maximum process and operational reliability with optimized energy and operating costs. Temperature, humidity, and particle concentration are reliably controlled – from compact FFU solutions to large-volume cleanrooms, including media supply and intelligent control and regulation technology.

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Large-scale cleanroom area for industrial series production with controlled particle concentration.

Ceiling-integrated cleanroom air technology with FFU systems to ensure defined air purity.

Heat recovery - saving energy through innovative technology

Our heat recovery systems use waste heat from industrial processes (e.g., compressed air, cooling water, hydraulics) to heat halls, offices, or break rooms – starting at just 35 °C.

This means that energy that has been paid for once can be used multiple times, significantly reducing energy costs and protecting the environment. In many cases, boilers and large heating systems can be completely replaced – the systems require little space and pay for themselves quickly, often even without equity capital through leasing.

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Multiple use of energy – reduce costs, cut CO₂ emissions, save boilers.

Using waste heat as heating energy - efficient, economical, environmentally friendly.

Heat recovery from 35 °C: Heat from cooling water and processes for halls and offices

Rhytemper® temperature control system

Optimal temperature control management for maximum process stability

The unit costs for die casting and injection molding are largely determined by mold temperature control, as it directly influences process stability, product quality, and cycle time. Conventional flow-through temperature control systems often extend cycle time, do not offer quality monitoring, and do not reliably secure the process.

The Rhytemper® temperature control system, on the other hand, optimizes temperature control management specifically for the molded part. It records the thermal fingerprint of the part via the heat balances of the individual temperature control circuits and monitors it continuously during production.

By adjusting the temperature difference and volume flow, the thermal structure is kept constant – for stable processes, higher quality, and shorter cycle times.

On average, cycle time reductions of 18% are achieved, and in individual cases up to 40%.

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Rhytemper® Series - Temperature Control Units

Rhytemper® FlowWatch Basic

Rhytemper® FlowControl for injection molding

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