Digital transformation also in the ventilation industry?

A REVEN workshop highlights the possibilities and importance of digitisation in the industrial ventilation industry. The goal of the REVEN Workshop is to initiate a regular exchange between different industries and disciplines. From the developer, the designer, the planner and plant & machine builder to the operator, an exchange take place in interesting workshops. The aim is to discuss and develop business models and possibilities of digitisation in the areas of commercial kitchen ventilation and industrial air pollution control. Registration for the German spoken workshop can be found here:

https://blog.reven.de/Registration.pdf

The importance of digital transformation in the ventilation and construction industry is also confirmed by Olaf Demuth, former board member of the Züblin construction company: *

“A group like ours is, of course, organised according to divisions and responsibilities, it consists of units that communicate little with each other. The different units have no incentive to coordinate with each other. Most of them are even sitting in different places. We just can not get trends on time. Certainly not trends from digitisation. Take a look at our work process: Developers of buildings do not plan the buildings – they only develop them. Planners only plan, but do not build the buildings. The people who build do not operate the houses. And what are the operators doing? They only rent the buildings, but they do not use them themselves. As an industry, we fear that we will be vulnerable to attacks by new companies that approach that task in a completely different way.”

*Source Christoph Keese: Silicon Germany: How to Create the Digital Transformation. Albrecht Knaus Verlag, 2016, pages 58-59

We wish you happy holidays!

“The future depends on what we do today.” – Mahatma Gandhi

In this sense, many thanks for the good cooperation and the many common achievements this year!

Sven Rentschler & the whole REVEN Team

Cultural Disruption in a Ventilation Startup from 1905

REVEN® GmbH has its origins in a startup founded almost 115 years ago! In 1905, the great-grandfather of today’s CEO, Gustav Rentschler founded his startup for ventilation systems in a garage near Stuttgart. 

At that time, there were no garages in Silicon Valley, Palo Alto! This development began only during the Second World War, for example in 1939 with the startup Hewlett-Packard. 

The art of 115-year-old companies is to keep a startup culture alive. For this, it is far from enough to dress casually and hold conferences in sneakers and shirts without ties, this requires much more, it needs a Cultural Disruption. Too often, medium-sized companies to large corporations are characterized by a patriarchal corporate culture and this freezes the free spirit and creativity. Our company has managed to disrupt such a patriarchal corporate culture, and today we can proudly look back on nearly 115 years of history, recent developments such as our X-CYCLONE® technology, and a corporate culture of US American startup!  

More about the history of Rentschler Reven GmbH can be found here: https://www.reven.de/history

X-CYCLONE® air cleaner on drilling platforms in the oil and gas industry

X-CYCLONE® air cleaner on drilling platforms in the oil and gas industry

In the past few years, several British and Scandinavian companies from the oil and gas industry have decided to use X-CYCLONE® air cleaner from REVEN®. To date, all drilling rigs have had major environmental problems during the drilling process. The drilling mud, which is excavated during drilling, is collected in large mud tanks of the shale shakers* on the drilling platforms. Due to the high temperatures and the coolants of the drilling mud and the high levels of crude oil in the drilling mud, large amounts of oil mist rise from these mud tanks.

This oil mist has in the past simply been sucked off and blown into the environment via huge hoods that were placed above this mud tanks. The cooling of this exhaust air, which was blown into the environment, caused this oil mist to condense in the exhaust air and settle on the sea surface in the immediate vicinity of the drilling platforms. To avoid this environmentally negative process in the future, several British and Scandinavian oil and gas companies are equipping their offshore drilling systems on their rigs with X-CYCLONE® air cleaner. For more information about these applications, contact the REVEN distributor for the oil & gas industry: https://www.wozair.com

* Shale shakers are components of drilling equipment used in oil and gas drilling. Drilling fluids are integral to the drilling process and, among other functions, serve to lubricate and cool the drill bit. These fluids are a mixture of various chemicals in a water or oil based solution and can be very expensive to make. For both environmental reasons and to reduce the cost of drilling operations, drilling fluid losses are minimised by using for example X-CYCLONE® air cleaner.

The down play of UV and ozone technology in commercial kitchen ventilation

The down play of UV and ozone technology in commercial kitchen ventilation

How dangerous the UV and ozone technology for air purification in kitchen ventilation is and how this risk is being downplayed by many manufacturers is shown by a comparison of known air pollutants and their indoor and outdoor limits:

Nitrogen dioxide NO2

For nitrogen dioxide, the limit values ​​for indoor workplaces in Europe are between approximately 1 and 6 milligrams per cubic meter of room air, which corresponds to 1,000 to 6,000 micrograms per cubic meter of indoor air! Driving bans are issued when cities exceed the EU limit of 40 micrograms of nitrogen dioxide per cubic meter of city air.

A very large gap between indoor and outdoor limits for nitrogen dioxide, but you will see, it is even more extreme for ozone! What is the situation with ozone in comparison? Are the thresholds similar or are they different, and if so to what extent?

Ozone O3

Ozone is a colorless and poisonous gas. The Commission of the German Research Foundation assesses ozone as a substance suspected of causing cancer in humans. For ozone, the limit values ​​for indoor workplaces in Europe are between approximately 0 and 0.2 milligrams per cubic meter of room air, which corresponds to 0 to 200 micrograms per cubic meter of room air!

In cities, for example, alarm limits are set by the German Environment Agency as follows: For the ozone concentration there is an information threshold of 180 micrograms per cubic meter and an alarm threshold of 240 micrograms per cubic meter. From an ozone value of 180 micrograms per cubic meter, behavioral recommendations are given to the public via the media.

If these limit values ​​and alarm thresholds are observed, systems and statements from the kitchen ventilation industry, such as the following, must be critically evaluated:

“Complaints due to excessive ozone concentrations in the exhaust air may occur, even if the ozone concentrations released are well below the permissible limit of 20 mg/m³ according to European kitchen ventilation standard EN 16282-8.”

A limit of 20 milligrams of ozone per cubic meter of exhaust air, as previously stated, corresponds to 20,000 micrograms per cubic meter of air! 20,000!!!!!! Please compare this with the data of the German Environment Agency, which have set an alarm threshold of already 240 micrograms per cubic meter for ozone, here in the original read: https://www.umweltbundesamt.de/themen/luft/luftschadstoffe/ozon

This shows very clearly how grossly negligent many manufacturers of ventilation systems for commercial kitchens deal with these UV and ozone technologies and how little the users are really informed. The whole issue is reinforced by the fact that many manufacturers, probably distribute UV and ozone systems that emit such high ozone concentrations and then manufacturers do not even have the measurement technology to determine the ozone concentrations.

In this sense, it would be advisable for some manufacturers to behave like the three wise monkeys and their proverb derived from the Japanese:

“What does not conform to the law of an appropriate behavior, do not look! What does not conform to the law of appropriate behavior, do not listen! What does not conform to the law of appropriate behavior, do not talk about it! What does not conform to the law of appropriate behavior, do not do that! “

REVEN successfully certified to ISO 9001:2015

REVEN GmbH has been successfully certified by the certification company DEKRA this week according to the new standard ISO 9001:2015.

The quality management system of the new standard ISO 9001:2015 contains a number of innovations compared to the old ISO 9001:2008 standard. One improvement is that more emphasis is placed on process-oriented approaches and the demand for comprehensive and systematic process management. In addition, knowledge management plays a stronger role than before in order to document the knowledge required for processes and to make it accessible to all employees. The conversion to the new standard ISO 9001:2015 was prepared and implemented by REVEN quality management commissioner Klaus Mann and the external partner & consultant Mr. Biemüller from Hopp & Flaig at an early stage. To this end, they developed a completely new, web- and server-based quality management system with an innovative database-driven approach. The new system enables a clear presentation of all aspects of the REVEN processes as well as their links.

Among other things, DEKRA’s auditor rated the cleanliness and tidiness in the REVEN production area as exemplary for the metal industry, see above figure which shows one of four production halls of REVEN GmbH in Sersheim, 20 kilometres north of Stuttgart.

The REVEN DIN ISO 9001: 2015 certificate can be downloaded here: REVEN Zertifikat Zert ISO 9001:2015 Engl.

Pure competence in air. – Seminars by REVEN

The lunch break is over, and the attendees return to the seminar room at the premises of Rentschler REVEN GmbH in the German town of Sersheim. On that day, the managing director and graduated engineer Sven Rentschler imparts concentrated knowledge about air purification to the ventilation system designers and plant engineers. Currently everybody talks about air quality control. Rentschler REVEN have realized a long time ago that this topic is not only important for the air quality in cities but also for the health and safety at industrial workplaces. Under the slogan “Pure competence in air” Rentschler REVEN have researched for more than 100 years in the field of air cleaning and have developed innovative products for the mechanical, catering, food processing and textile sectors. In addition, they have imparted their knowledge to the relevant branches of industry in seminars and workshops. Whether at the occasion of a conference in Munich, Hannover or Berlin or in the seminar rooms at the company’s site in Sersheim, the attendees from the industry and the economy sector learn in the lectures of Rentschler REVEN GmbH what air cleaning really means and in how many different processes it plays an important role. This is demonstrated with sophisticated technology and on numerous exhibits.

It all began in 1905 when Gustav Rentschler, the great grandfather of the company’s CEO, founded the Gustav Rentschler Flaschnerei und Apparatebau in the German town of Sersheim. Over the time, the company has specialized in air cleaning and gained an international reputation due to its research work, the development of various technologies and the filing of numerous patent applications. In the past twenty years, the company has enhanced its portfolio and has specialized in the manufacture of air cleaners for industrial applications in addition to products for commercial kitchen ventilation.

In his seminar, Sven Rentschler not only gives the engineers and designers an understanding of the different requirements and regulations of the EU and explains how to comply with them in practice, but also makes clear how important air cleaning at workplaces really is, for the company as well as for its employees.

Ill.: In his seminars, Sven Rentschler imparts all the things that are important to know about air cleaning.

In industrial manufacturing processes as well as in the food processing industry and in commercial kitchens, smallest air-borne particles, often referred to as fine dust, are emitted. The air cleaners produced by Rentschler REVEN manage to filter these particles out of the air. This keeps workplaces healthy and clean and protects the environment. “The small particles, invisible to the human eye, can harm the respiratory system and increase the risk of developing cancer, they can also damage sensitive systems and machinery,” explains Sven Rentschler.

The fields of application are widespread. The renowned Swiss manufacturer of exclusive design watches IWC Schaffhausen, for instance, installed over forty REVEN X-CYCLONE air cleaners in its factory at the  beginning of the year.

Ill.: X-CYCLONE air cleaners at IWC at Schaffhausen

These special air cleaners filter all the small particles out of the exhaust air that are emitted during milling, grinding and polishing of the small plates, screws and gears in the clockworks or of the watch glasses. In the Spanish town of Bilbao, air cleaners of the X-CYCLONE C series from Rentschler REVEN run at ITP Aerospace, a company that builds engines for aircrafts such as the Airbus 380. The high-performance oil mist separators extract the air directly from the processing machines and filter in multiple filter stages the smallest particles to keep the workshop free from oil mist and emulsion mist.

Even in the renowned Max Planck Institute for Solar System Research, where researchers in cooperation with engineers construct scientific instruments to explore the universe and to investigate material from the outer space, X-CYCLONE air cleaners provide for pure air. Sven Rentschler succeeded in demonstrating the importance of pure air for a good working climate at the workplace, for the health of the employees and of course for the environment and he also pointed out how to achieve this goal.

The world’s only BIM kitchen ventilation configurator

The REVEN BIM kitchen ventilation configurator is aimed at architects, engineers and other professional planners who want to work with the BIM working method. BIM 3D data as well as software for calculating the correct air volumes of a kitchen ventilation according to the new European standard EN 16282 are freely accessible in the REVEN BIM configurator without registration: my.reven.de

REVEN donates for Ludwigstafel

The LudwigsTafel e.V. is a non-profit and charitable association and offers in the field of food supply, help for the needy, primarily in the Ludwigsburg city, but also in the surrounding area. The project aims to help needy people and financially relieve their everyday lives. In the implementation, various social, diaconal and charitable associations and institutions, as well as individuals, interested groups and promoters cooperate.  

The CEO of the REVEN GmbH, Sven Rentschler himself a personal supporting member of the LudwigsTafel e.V., presented a donation of the REVEN GmbH for the Ludwigstafel www.ludwigstafel.de in October 2018, combined with the commitment to provide the Ludwigsburger Tafel with a yearly support from now on.

The “RSR graphic” from above shows the “CSR guidelines“ of the REVEN GmbH and their executives. The REVEN executives and project managers follow the mission statement of the Honorable Businessman. Building on the goal of harmonising humanity and economy, the Honorable Businessman develops a sense of responsibility for the things that make his business success:  

– The relationship with his employees. Their satisfaction requires his success. It is important to treat them fairly and humanly, but also to demand discipline and performance.  

– The relationship with his business customers and suppliers, which he also treats according to his principles, with the aim of establishing and maintaining long-term relationships with them. Personal ties strengthen the company. He is also fair to his competitors. 

– His awareness does not end at the factory gate. The Honorable Businessman knows that the society in which he leads his company, is crucial for the company’s success. Here his employees have received their basic education. The publicly financed infrastructure enables the transport of goods and the political system secures the property rights. The relationship with the community in which the company is located, strengthens him, because he owes her to his qualified staff. The company’s reputation in the community also affects the motivation of its employees within the company.

What does the Titleist® and Reven® Research Laboratory have in common?

🇩🇪 Artikel: https://wp.me/p6bySS-v7

Filters in kitchen hoods, separators for airborne aerosols (e. g. oil mist separators) have a commonality with golf balls! The smoother, the more polished the surface, the worse these work! Golf balls, kitchen filters, oil mist separators with smooth and highly polished surfaces have serious efficiency shortcomings compared to designs with surfaces that have dimples.  

The serious impact of surface texture has been known for many years in the research of aerosol separators as well as golf balls, and modern golf balls as well as separators have surfaces marked by dimples.

The negative effects of highly polished surfaces in aerodynamics are impressively demonstrated by a video on YouTube from the Titleist® laboratory. Aerodynamics’ senior project manager Nick Nardacci is researching the perfect surface for golf balls, much as Rentschler Reven GmbH is researching the perfect surface for its X-CYCLONE® aerosol separator. Why such basic research in the field of aerodynamics is so important, you can see here: https://youtu.be/zZsvpw-JOO0  

More about the X-CYCLONE® aerosol separators with a “golf ball surface” can be found here: https://www.reven.de/

Air cleaner for textile finishing cleans itself

In textile finishing, the Monforts stenter frame * plays an important role

Textile finishing is the coating, lamination, dyeing and printing of fabrics. An important role falls to the stenter. Among other things, it has the task of drying and fixing the treated textiles. The textile web passes through several fields of the clamping frame and is traversed by hot air, which is then blown into the open air. Heat recovery recovers part of the heat energy of the hot air and warms the textile web. This significantly reduces energy consumption. The problem with this: When drying the textile webs and especially during the fixing and condensation process oils and other aerosols are emitted by the textiles in addition to dusts and water vapour. With a textile laundry, the pollution can be reduced, but it is technically not possible to operate a stenter free of emissions. Consequently, cleaning of the exhaust air is urgently required in such machines.

A first cleaning already takes place in the heat recovery. Here, a large part of the pollutants condenses into droplets. Often the exhaust air is further cooled by an air scrubber; The water-soluble pollutant particles are bound to the wash water. However, the scrubbers customary in the textile industry have poor filter performance. With a downstream electrostatic filter, the filter performance can indeed be improved; however, such electrostatic precipitators are very susceptible to interference and cause high operating costs. In the absence of the additional electrostatic filter, the textile refiner Van Clewe in North Rhine-Westphalia has recently started using a special air cleaner for this exhaust air from Rentschler Reven. It is equipped with an X-CYCLON separator and an additional water sprayer. The unwanted particles are washed out to a high degree, then separated from the exhaust air stream by the X-CYCLON separator by centrifuging. The X-CYCLONE separator works purely mechanically and cleans itself practically by itself. Its filter performance almost reaches the efficiency of an electrostatic precipitator. The X-CYCLON separator replaces the originally intended electrostatic precipitator with droplet separator. With the new REVEN X-CYCLON air purifier for waste air, Van Clewe saves on maintenance and energy costs; on top of that the legal limit values ​​for the exhaust air parameters are observed.

For the technical details please open the following PDF: textile_industry_air_cleaner

For further information for the REVEN X-CYCLON air cleaner for exhaust ducts follow this link: https://www.reven.de/

* Stenter frames…… are textile machines from manufacturers such as A. Monforts Textilmaschinen GmbH & Co. KG for the heat treatment of wide webs. They take over the drying of finished textiles and give them their final width and quality by clamping and fixing with hot air. The process takes place at high air temperatures (100 to 210 degrees C).

Understanding Kitchen Ventilation: Measuring and controlling airflows.

The Essentials of Kitchen Ventilation – Understanding Kitchen Ventilation

Exact measurements of the performance of extractor hoods and air supply units are essential for the functionality of kitchen ventilation! Find out which equipment is used for this purpose in the new flyer “Understanding kitchen ventilation correctly”: Understanding Kitchen Ventilation

REVEN & SCHAKO UK intensifying air cleaning distribution in UK and Ireland

With the new product manager Shaun Fairclough at SCHAKO UK, REVEN & SCHAKO UK are intensifying their air cleaner distribution all over UK and Ireland. Shaun Fairclough will be the product manager for the whole REVEN X-CYCLONE product range and his contact data are

SCHAKO UK
Shaun Fairclough 
phone +44 7383 099461
Index House, St George’s Lane
Ascot, SL5 7EU

England

Shaun Fairclough already has ten years of experience in industrial air purification and thus lives up to our claim of “Pure competence in air.” From now on, Shaun Fairclough will be available to our prospective customers from Great Britain and Ireland as a competent contact person!

REVEN 2019 ePaper catalog for worldwide online access

The new REVEN 2019 ePaper catalog is now available worldwide as an online tool as well as for download. The new REVEN 2019 ePaper catalog is available as an optimised desktop version, as well as a smartphone version for example for Apple or Samsung devices. To start the online web version of the new REVEN 2019 ePaper catalog simply visit www.reven-epaper.de.

X-CYCLONE® EGU Recirculation hood and RKGN duct air cleaner with RGN99 high-performance granulate for the reduction of organic odour pollution

X-CYCLONE® EGU Recirculation hood and RKGN duct air cleaner with RGN99 high-performance granulate for the reduction of organic odour pollution

RGN99 high-performance granulate for the reduction of organic odour pollution, a food-compliant alternative to activated carbon. Odour reduction by oxidation of odour molecules in the exhaust air. Oxidation with potassium permanganate and volcanic rock zeolite. Odours are eliminated by the reaction with potassium permanganate; residual odour particles are trapped in the molecular sieve provided by the volcanic zeolite carrier material.

Due to the combustion of animal fat and vegetable oil during food preparation, quite a number of complex and aggressive organic gas compounds are produced in kitchens. These kitchen odours are transported by the airflow in the form of molecules. The molecules are far too small to remove them with common separators used in kitchen extraction systems. This task requires special processes. In most cases, odours are eliminated by absorption in an oxidation process with active carbon or by using so-called UV systems.

The RGN 99 system implements a completely new approach to odour elimination, an oxidation process involving potassium permanganate and zeolite. The disadvantage of active carbon separators in kitchen exhaust is that they are highly flammable and emit odours in the saturated state. In most cases, these odours are even worse than the kitchen smells themselves. Other systems such as UV systems are often uneconomical and their real efficiency is often not approved. The service life of the RGN 99 separating medium depends on many different factors, such as the quantity of filter granulate used, the type of odour molecules, the number of particles and the air temperature. Due to the oxidation of odour molecules, the potassium permanganate changes colour with time and turns from purple to brown. This change in colour allows you to monitor the state of the separator.

The RGN99 high-performance granulate for the reduction of organic odour pollution is a major breakthrough in oxidation of odour. The RGN 99 material is build up with an unique molecular sieve impregnated with potassium permanganate. A comparison of REVEN RGN 99 high-performance granulate to activated carbon can be found in the following table:

The X-CYCLONE® EGU recirculation hood with with RGN99 high-performance granulate for the reduction of organic odour pollution can be put together directly in our new configurator: https://bim.reven.de/#/configurator 

The technical data for the X-CYCLONE® RKGN duct air cleaners for the reduction of organic odour pollution can be found here: https://www.reven.de/RKGN-Series.pdf 

You can find a test report for circulating air hoods with RGN99 high-performance granules here: test report RGN 99 hoods

The RGN99 high performance granulate is also used to reduce odour in garbage rooms, copier & printer rooms, offices and hotel rooms. There, the air can be refreshed overnight with a compact ULTRA CLEANER UC-OH² recirculation unit.

In all of these rooms you will find air pollution by fungi spores, hazardous fine dust, pollen and allergens. Airborne allergens, such as pollen, mildew spores, pet hair and dust mites can seriously affect air quality, particularly for people suffering from allergies. Office employees need clean and fresh air. In particular cases, the operation of a laser printer in an office can produce a particle concentration in the room air as high as that caused by smoking. Scientists found out that the pollution of the air in an office building (under a smoking ban) during worktime is up to five times higher than that of the outside air next to a very busy road.

The compact REVEN recirculating ULTRA CLEANER UC-OH² is one of the world’s most efficient air cleaners and can handle such pollution loads in living and working rooms. The technical data you find here: https://www.reven.de/UCOH2-Series.pdf

Now available with a test report from BAYER® Leverkusen Germany: BAYER_UCOH2_Test

The REVEN distributor for Brazil – ERIMATECH – published this week his new homepage

The REVEN distributor for Brazil – ERIMATECH – published this week his new homepage

The REVEN distributor for Brazil ERIMATECH INDUSTRIAL EQUIPMENT is located between Porto Alegre and São Paulo on the east coast of Brazil. The company was founded by Erivelto Campos and the Erimatech Industrial Equipment distribution company started its activities on the field of representation and consulting in March 2010, always acting in the industrial area, seeking the latest technology for its customers. Always acting in metal mechanics industry with the main goal of introducing now the REVEN products with its unique X-CYCLONE technology all over Brazil. Therefore we are proud to introduce the new ERIMATECH homepage: http://www.erimatech.com.br