Biomass energy for the future

Transcription

1 Layout-16seiter_englisch :29 Uhr Seite 1 Nr.26, Mai 2007 Technik zur Aufbereitung von Biomasse A K T U E L L Information for customers and staff Biomass energy for the future Special edition for Open Day / LIGNA made in Germany Energy generation from residual forestry wood in Finland The 2000th JENZ fragmentiser leaving Wegholm JENZ-Woodcracker Staff and machines

2 Layout-16seiter_englisch :29 Uhr Seite 2 The future needs origins The story of JENZ 1921 Company foundation by master blacksmith Hans Jenz 1930 Village blacksmith works, construction of coaches, trailers and small farming equipment 1947 First gear-rack tipping lorry for the farming industry, prize-awarded by the DLG (German Farmers Association) 1955 Wilhelm Hermeier marries Resi Jenz and enters the company. First change in generation 1955 Patented over-running brake for trucks. The brake is still produced today in similar form Production of manure spreaders, trailers, tipping lorries, truck mountings and truck trailers First stationary JENZ wood chipper for a veneer company 1968 Stationary JENZ chipper are running in many veneer companies and sawmills 1976 Licence agreement with the Finnish Algol company for the production and promotion of JENZ chippers in Finland 1977 First mobile JENZ Chipper in cooperation with Algol. Powered by a 220 kw Scania diesel engine 1986 First JENZ waste grinder for composting green waste Editor: JENZ GmbH Responsible: Uwe Hempen-Hermeier Print: ODF-Druck, Minden 1989 First JENZ waste grinder AZ 50. With more than 300 hp the lar gest waste grinder on the market at that time First mobile chipper HEM 30 D. At that time strongest mobile chipper from German production 1992 First mobile JENZ chipper HEM 25 Z. First tractor-driven mobile chipper in Germany, which is loaded by its own loading crane New waste grinder AZ 55 replaces the AZ With the HEM 700 the first mobile chipper of the new generati on is presented On the Agritechnica JENZ presents the first HEM 560 Z. The machine becomes the most successful mobile chipper so far The AZ 660 is presented, the first waste grinder of the new generation With the HEM 1000 JENZ produces the largest mobile chipper in Europe at that time AZ 960 with 1000 mm feed opening is presented

3 Layout-16seiter_englisch :29 Uhr Seite 3 and y. uck Uwe Hempen- Hermeier, Managing Partner nies lar ile obile ne. erati e r. er in Dear reader, according to our point of view, the world changed on the 2nd of February. This was the day on which the IPCC (Intergovernmental Panel on Climate Change), a committee of 500 scientists which is active on behalf of the United Nations, reported that it is 90% certain that the climatic warming of the earth is due to the CO2 emissions caused by mankind. Jacques Chirac, the former French Prime Minister, then commented: "The time for half measures has passed, the day on which the climate change will get out of control is getting nearer." As a result of this the EU, under the presidency of Angela Merkal, resolved to reduce the CO2 emissions by 20% and to simultaneously increase the proportion of renewable energies to at least 20%. The same line will be followed by the German presidency at the G8 summit as well. Biomasses have an increasingly important function within the renewable energy concept. Biomasses are stored energy, and in comparison to sun and wind they are always available and can therefore be used to cover the baseload of energy requirements. We have been convinced of the significance biomass usage for a long time. This is not the only reason that we decided to carry out our first Open Day using the slogan of "Biomass - energy for the future". We wanted to make it quite clear that there is no place for "it is the end of the world" fears. We need new concepts for new types of energy production, otherwise it will not be possible for 9 billion people to live on this planet in We want to play a part in this with our high-powered, innovative machines. We extend a hearty welcome to our customers, employees and sup- pliers to our "open day". We have set up almost our whole range of mobile waste fragmentisers and mobile chippers for you on our works premises on Wegholmer Straße. The presentation of our new HEM 1000 XL and a JENZ chipper truck based on the MAN chassis are very likely to be the outstanding points of the day. We will, of course, also be demonstrating all our other machines in use. Employees will provide you with information and are available for discussions and to talk shop. The works are also open, so you can get an impression of our production conditions. Our Open Day is intended to be a pleasant meeting of specialists from a future-oriented sector. Do come along, we're looking forward to meeting you.

4 Layout-16seiter_englisch :30 Uhr Seite 4 JENZ new technology for the HEM 1000 "Hercules, "Woodcracker and the JENZ Chipper Truck optim Mobile chipping machines are driven using the towing tractor power takeoff shaft, or using a built-on diesel motor. For a while now we have been receiving inquiries about fitting a chipper to a lorry and using the lorry motor to drive it. The reasons for this are: better utilisation of the lorry motor because only one motor is required higher performance because the lorry motor is stronger than a tractor motor increased mobility because the lorry can travel at 50 mph on the motorway in contrast to a tractor. Normally, however, lorries are not fitted out for such tasks. A suitable side drive, which transfers the motor power onto the chipper, cannot be supplied by the manufacturers. This means that up to now customers have had to convert the vehicle themselves. This meant that the customer had to negotiate with the lorry manufacturer, the crane manufacturer and the chipper producer. In many cases, a fourth party was involved in fitting the unit. JENZ previously occupied this position, but is now able to offer a complete solution from under one roof. The first chipper truck was presented on Open Day. It consists of the following main components: - MAN HGV, Type TGA X4-4 BL, performance 353 kw (480PS), Wheelbase 3600mm between 1st and 2nd axle - Lorry cabin converted to "mowing version", the chipper is controlled by the rotating seat on the passenger side. - EPSILON crane, type E110L PLUS - HEM 561R mobile chipper The overall vehicle design was carried out by JENZ in close consultation with our customer. The second rear axle is steerable, so that the vehicle has an extremely small turning circle of 16.6 metres which enables it to manoeuvre very well in small spaces. The overall weight of the HGV is around 20 tonnes. In order to use the permissible overall weight of 40 tonnes, there is a possibility of carrying additional loads of around cbm of woodchippings on the vehicle and transporting it along motorways at 50 mph. The advantages provided by this concept are clear to see. The remaining question is economic efficiency. The investment must be viewed in comparison to other solutions. Here it can quickly be seen that the costs for the HGV concept are not particularly higher than those for available alternatives. The new concept should be seriously considered in any planned investment in mobile chipper technology, particularly with regard to its logistic advantages. Technical details 352 kw = 480 HP Undercarriage: MAN, TGA X4-4 BL up to approx. 150 srm/h 990 x 650 mm Max. material thicknesses: Softwood 560 mm Dimensions: Length: approx mm Width: approx mm Height: approx mm Crane: EPSILON, Typ E110L PLUS Machine weight/standard version: approx kg

5 Layout-16seiter_englisch :30 Uhr Seite 5 he processing of biomasses k optimise performance and logistics for our customers.

6 Layout-16seiter_englisch :30 Uhr Seite 6 JENZ new technology for the HEM 1000 "Hercules, "Woodcracker and the JENZ Chipper Truck optim HEM 1000 Hercules now with longitudinal draw-in. In the heavy mobile chipper sector, JENZ re-presented the HEM 1000 DQ as a machine with side draw-in and HGV setup back in This chipper set new standards in the mobile sector at the time with its chipping drum diameter of 1450 mm. However, the HEM 1000 DQ can can only show off its good performance with certain materials due to its rather short side draw-in. This solution is not really optimal for even feeding, especially when dealing with shorter wood pieces. This problem has now been solved by the new HEM 1000 DXL. The machine has been designed as a semitrailer with three axles so that it offers completely different operating conditions due to its deadweight. Whilst the HEM 1000 DQ is limited by the 32 tonne overall weight limit for HGVs, the semitrailer can be designed for at least 30 tonnes self weight irrespective of the tractor machine. This results in the possibility of widening the draw-in width from 1000 mm up to 1200 mm at present. The upper draw-in roller is mounted directly on the rotor shaft, as in all current JENZ woodchippers. The lower draw-in consists of three bottom drawin rollers downstream of the steel belt. In a similar manner to a star screen, sand and small stones are separated downwards in the vicinity of the rollers. This protects the blades and increases service life. The draw-in rollers and the front part of the rotor housing are opened upwards hydraulically to change the blades. Tool changing can be carried out in a matter of minutes comfortably from the draw-in. During construction, particular care was given to changing the screen baskets. The result is that the screen basket consists of a row of individual segments which can be pulled out of the machine sideways. The segments can be easily handled by the operator and carried on the machine after replacement. The semitrailer transport kingpin is now positioned directly underneath the draw-in belt so that there is a free loading length of 5680 mm available. Additional widenings have been fitted to both sides of the draw-in which can be hydraulically folded up for transport. This results in optimal conditions for simple, rapid feed operations. Even after a long working day, it is an easy matter for the crane driver to fill the 5680 mm x 3700 mm sized opening quickly and regularly, and therefore to run at maximum capacity. The basic philosophy for the design of the machine is the understanding that the economics stands and falls on continuous high performance levels. For this reason, the best conditions possible have been achieved with regard to feed operations. The triedand-tested OM 502 LA in the high-performance version with 480 kw = 652 HP has been selected to drive the huge machine. It offers sufficient performance reserves and convinces thanks to its ratio between fuel consumption and performance achieved. A mobile chipper the size of the HEM 1000 DXL can only be worked in places where really large quantities of chippings must be produced simply due to its size. For this reason, it would make sense to carry out outfeed operations using a conveyor belt instead of a fan. Conveyor belts require less power and have less wear. The standing heap conveyor has a length of around 9000 mm, can achieve a drop height of up to 7000 mm, and, in addition, can be swivelled up to 35 degrees to both sides. This creates the facility for producing chippings heaps of around 100 cbm per linear meter. This means that the machine can be operated for considerably longer periods in one location without having to be moved. With the HEM 1000 DXL, JENZ has extended its range with a machine which can be used both in biomass production and in the wood-processing industry. However, since the design uses a semitrailer, the heavy machine does not lose any advantages of mobility. Technical details 480 kw = 652 HP Engine: DaimlerChrysler OM502 LA, Euromot3A up to approx. 280 srm/h x mm Max. material thicknesses: Softwood mm Rotor diameter: mm Dimensions: Length: approx mm Width: approx mm Height: approx mm Machine weight/standard version: approx kg

7 Layout-16seiter_englisch :30 Uhr Seite 7 he processing of biomasses k optimise performance and logistics for our customers. The old task: fragmentisation of hardwoods and roots The new solution: the JENZ Woodcracker - simple, robust and economic in use Wood is becoming a more a more sought after raw material due to increases in the price of fossil energy sources. For the processing company, the important thing is optimal use of existing material. In doing so, processing of trunks with oversized diameters and tree roots which do not fit in the chipper feed is especially problematic. A new range of technically advanced machines is now being offered on the market. These are not economically viable for private contractors due to the considerable investment required. It is necessary to fragmentise oversize wood in order to process it. For this reason, JENZ now has the Woodcracker wood splitter in its range. It is a wood splitter which is supplied as an add-on unit for diggers, tractors or loading cranes. The special advantage of the JENZ woodcracke is its well-engineered construction with only a few moving parts and the use of extremely durable materials. The result is a unit of extremely low weight which is, of course, decisive for rapid handling. For example, the JENZ W 600 Woodcracker has a deadweight of only 250 kg. This makes it suitable as a tool even for small loading cranes, and it can therefore support a HEM 360 Z in the fragmentisation of hardwoods of more than one metre trunk diameter. Manipulation of such heavy and tough wood with small chassis-mounted cranes is a problem because the lifting capacity of the crane is often not sufficient. If the log slips out of the gripper accidentally, damage to the fragmentiser housing can quickly result. The JENZ Woodcracker can be mounted on the crane and fragmentises the wood safely on site. After this, there are no problems during drawing in and fragmentising. The JENZ Woodcracker is available in four sizes from 600 mm up to 1375 mm opening width. All machines are only fitted with four bearings which are permanently lubricated. This means that the new Woodcracker is practically maintenance-free. An automatic speed valve, which leads to quicker opening movement, is available as an additional fitting. The newly developed roller system behind the splitter cutter reduces friction resistance and makes less power necessary. There is always a suitable fitting location on the mobile to the machine for the JENZ Woodcracker because it is so small and has such a low weight. For example, farmer and private forest owner Andreas Lübkemann has mounted his Woodcracker W 600 as a front weight on his Case 1455 tractor. His chipper, of type HEM 25 Z, is designed for wood of up to 40 cm in diameter. Thanks to the JENZ Woodcracker, he is now capable of processing all the wood from his private forest and burning it in his biomass heating system. The new JENZ Woodcracker range is the economic solution for processing oversized wood.

8 Layout-16seiter_englisch :30 Uhr Seite 8 The JENZ team and its individu Employees are the most important production factor in any comp any They can be seen from outside by the customers mainly during sales and service activities. The Open Day is an excellent reason to photog Master and QM groups Hans Ulrich Lange, Heinz Böhlke, Dieter Buddenbohm, Werner Schlegel, Wolfgang Dieker, Rene Polivka, Thomas Wolf Final assembly, 1st group Hermann Neumann, Wolfgang Redeker, Victor Neumann, Frank Rüter, Helmut Bollhorst, Rainer Fulda, Reinhard Niemeier, Uwe Fiestelmann, Marco Dargel, Sebastian Könemann, H.-H. Jacke, Jürgen Ronnenberg, Karl Heinz Menke Final assembly, 2nd group Hartwig Rohlfing, August Wischmann, Heinfried Brüggemann, Sven Stegemeier, Klaus Bredemeier, Timm Niermeyer, Wilhelm Kruse, Dirk Westermann, Ralf Ötting, Nico Schneiderheinze, Christian Brase, Holger Hillmann Motor construction and pre-assembly Matthias Telkemeier, Heinrich Dick, Waldemar Neumann, Jens Mülken, Michael Buschhorn, Jan Henrik Linz Johann Friesen, Dennis Meyer Welding and belt construction Alexius Schick, Jürgen Reinking, Johann Giesbrecht, Thomas Körtner, Ralf Duda Missing: Johann Wall Mechanical fabrication Andreas Wittemeyer, Christoph Grabowski, Markus Matzke, Frank Böhne, Thomas Bredemeyer, Andreas von Minden, Christian Wehking, Benjamin Braasch, Erwin Wesemann Missing: Jan Kaatze, Marcus Lemke Jens Siedentopf Electrotechnical Rolf Tiemann, Michael Busse, Andreas Beißner, Sven Schneiderheinze, Dirk Pfitzner, Maik Möhring Missing: Alexander Epp und Dave Wallis industrial and commercial apprentices Ausbilder Thomas Wolf, Marlow Reckeweg, Simon Rennicke, Peter Wall Felix Franke, Sina Buddenbohm, Siegurd Kiel, Anja Schmidt, Phillip Böttcher, Christian Böhlke, Heiko Rodenberg, Sebastian Breuer, Ausbilder Peter Alvermann Missing: Dennis Gieseking Technical management, EDP, materials management Gundi Prüßmeyer, Elke Niermeyer, Rolf Bredemeier, Reiner Büsching, Bernd Elias, Peter Alvermann, Axel Döpke

9 Layout-16seiter_englisch :31 Uhr Seite 9 idual team members mp any. on to photograph all employees together in their working groups and to show them to you here. Construction & development Stefan Müller, Waldemar Braun, Marco Koopmann, Jens Wiehe, Robin Friederichs, Hans Bargen, Ulf Bulmahn Mario Heller, Uwe Weiße Warehousing & transport Wilhelm Busse, Thomas Burmester, Reinhard Maisolle, Dieter Ungefroren, Gernot Brian Walker, Werner Hake, Christian Hake, Maik Senne Missing: Ulrich Beutelmann General administration Thomas Oetting, Marita Knabe, Anna Hermeier, Sylvia Könemann, Maike Buschhorn, Jessica Kortum, Walter Schubert i, Service, parts trading Silvio Patzsch, Jörg Hillmann, Bernd Westermann, Wolfgang Benditte, Carolin von der Ahe Service workshop Nico Westermann, Axel Wilharm, Eugen Miller, Frithjof Meyer, Gregor Giesbrecht, Steffen Hilgendorf Sales Ulf Beier, Hartmut Schneckener, Karin Schwanda, Uwe Hempen-Hermeier, Renate Steinich-Döding, Bernd Ruhe Service- and parts trading in Petershagen

10 Layout-16seiter_englisch :11 Uhr Seite 10 Energy production from residual forest wood in Finland with huge potential Wuorio company receives visit from Finland's premier, Prime Minister Matti Vanhanen Fragmentisation of residual forestry wood at the biomass yard Finland's surface area consists of up to 60% forest. It is therefore hardly a surprise that Finland is top of the league table of industrial countries for biomass usage. In 2004, 20.4 % of primary energy consumption was covered by biomass. The wood and paper industries are top of the supplier list. The potential of residual wood from forestry operations is estimated to be an annual 10 to 16 million cbm, but at present only around 3 million cbm is being used for energy purposes. The forested area has further increased over the last few years. This market has great potential for smaller companies and niche applications. Our customer Reijo Wuorio had also drawn these conclusions when he founded his biomass company in 2001.At the beginning, he purchased a HEM 560 D, which was mounted on a Volvo lorry. Business expanded rapidly in the following years. Today, the company employs a total of 26 people directly and indirectly. Four HEM 560 D / HEM 561 D machines form the core of the machinery pool, all of which are mounted on lorries. In addition, two walkingfloor lorries are used for chipping logistics, and a large wheeled loader is used to transport woodchippings. The daily production quantity achieved by the four machines is around 1600 bulk cubic metres, which is equivalent to the energy quantity produced by around litres of oil or around 1280 MWh. The youthful company had a very big day in October last year. The Finnish Prime Minister Matti Vanhanen paid a personal visit to Wuorios bioenergy terminal in Askola. In his speech, Vanhanen was of the opinion that there would be no conflict between material and energy wood usage in Finland in the future either. Thermal utilisation could be increased by a factor of four without further ado, and would not cause any restrictions on material usage. The Finnish government sees their task in subsidising the procurement of machines for the treatment of residual wood as an investment in the home energy market. This would also support the national climatic protection aims, decrease the dependency on oil and simultaneously promote forestry growth. Entrepreneur Reijo Wuorio therefore has many reasons to look positively into the future. Shortly before the Prime Minister's visit, he ordered the fifth HEM 561 D, and is therefore playing his part in implementing Finland's national aims. Herr Wuorio explains matters to Finland's Prime Minister Matti Vanhanen Wuorio s JENZ mobile chipping machine fleet ready for action

11 Layout-16seiter_englisch :11 Uhr Seite th JENZ fragmentiser produced Firma De Beijer erhält AZ 660 Duo Cut "Big Mama : rotors on the 2000th JENZ fragmentiser JENZ has been producing fragmentising machines since The 2000th machine was produced last January. This was an AZ 660 Duo Cut. The machine was delivered to the De Beijer Brothers contracting company in Holland, who are already operating a HEM 700. Since commencing production of fragmentisers, JENZ has always placed great value on the fact that The 2000th machine (AZ 660 Duo Cut for the De Beijer brothers) the machine fittings match the particular task definitions and requirements of the customer - just as in this machine. De Beijer was looking for a machine which could be run using both a chipper rotor and an impact rotor, because the purchase of a second machine with chipper only would not have been economically viable for the company. The AZ 660 machine stands were modified so that the rotor could be changed over quickly to meet these requirements. In addition, the machine allows the belt drive to be changed so that the chipper rotor can work with the required lower rotation speed for clean chipping operation. This new version has been named the "Duo Cut". Just as for other "Jubilee machines", we took a picture of our entire workforce together with this chipper. The dynamics of development over the last 25 years in the mobile chipper technology sector becomes very obvious using JENZ's pictures of similar "Jubilee machines". We hope you will enjoy the photos of our other jubilees. - Photo of the 500th machine (Algol hopper chipper) - Photo of the 600th machine (AZ 30 for Rahden) - Photo of the 1.000th machine (AZ 60 for Schönmackers) - Photo of the 1.500th machine (HEM 560 D for Schaller) The 500. machine (Regrinder, type funnel chipper for Algol) The 600. machine (AZ 30 for Rahden) The machine (AZ 60 for Schönmackers) The machine (HEM 560 D for Schaller)

12 Layout-16seiter_englisch :12 Uhr Seite 12 Biomass energy for the futur In the future, biomasses will pay an ever increasing part in the implementation of international We will be presenting our current range of fragmentising machines during our Open Day. The individual machines are presented in brief o You can find more information in our current product guide and on the Internet at AZ 30 D Perkins 74,5 kw AZ 460 D DaimlerChrysler 205 kw AZ 660 D DaimlerChrysler 295 kw, 360 kw, 450 kw up to 60 cbm/h 300 x 790 mm up to 140 cbm/h 460 x mm up to 220 cbm/h 660 x mm AZ 660 DXL AZ 960 DXL HEM 360 Z-ZA DaimlerChrysler ab 295 kw, 360 kw/450kw up to 260 cbm/h 660 x mm DaimlerChrysler 450 kw up to 350 cbm/h 960 x mm Power take-off up to 180 kw up to 60 cbm/h 400 x 790 mm HEM 420 Z Power take-off up to 180 kw HEM 561 DL Tiger DaimlerChrysler 360 kw HEM 561 R-Truck MAN-TGA 350 kw up to 80 cbm/h 420 x 990 mm up to 120 cbm/h 650 x 990 mm up to 150 cbm/h 650 x 990 mm

13 Layout-16seiter_englisch :12 Uhr Seite 13 ture national climatic protection targets. The requirement for this is high-powered machinery. ted in brief on the following pages. HEM 561 Z Power take-off up to 235 kw HEM 1000 DXL DaimlerChrysler 480 kw up to 150 cbm/h 650 x 990 mm up to 280 cbm/h x mm MU 2000 Windshifter W 6 Drum screen T 6 with fine separator Perkins 74,5 kw Perkins 42 kw Perkins 90 kw + 5 kw up to 350 cbm/h x mm up to 50 cbm/h up to 200 cbm/h JENZ-Woodcracker W 1350 W 1000 W 820 W 600 Cracker opening: 1375 mm 1040 mm 820 mm 600 mm Splitting power at 240 bar: 26 t 26 t 26 t 26 t Deadweight: 800 kg 460 kg 330 kg 250 kg HEM 700 DL DaimlerChrysler 295 kw, 360 kw, 450 kw up to 220 cbm/h 700 x 990 mm

14 Layout-16seiter_englisch :12 Uhr Seite 14 JENZ and GVOA plant the first e Pilot project for the promotion of renewable energy forestry in the Minden-Lübbecke district The Association for the Utilisation of Organic Waste in the Minden-Lübbecke district (GVoA) and JENZ GmbH signed a contract for the promotion of renewable energy forestry planting in the Minden-Lübbecke district last April. Both companies assume that the potential of existing local forestry in the area will not be sufficient during times of increasing timber demand. They consider the planting of energy forestry to be an alternative, and are hoping that set-aside agricultural land will provide suitable growing areas. Planting of rapid-growing timber types does not prevent the payment of set-aside bonuses. In the context of harvesting moist woodchippings, the GVoA hopes to provide the facility for using the waste heat produced by the fermenting works on their premises to dry the woodchippings. Energy forestry is a particular challenge for JENZ. The wood harvesting technology in the sector has not yet been sufficiently developed. This will provide a new task for mobile chipping machines in the future. With this background, farmer Wilhelm Borgmann provided 1.08 hectares of land in the immediate vicinity of the JENZ company premises. The choice lay between willow, poplar and miscanthus. After a detailed investigation, 13,000 cuttings of Swedish Torbis willow were ordered. The crucial factor was the costs of the plants themselves and the compatibility of woodchippings with the JENZ biomass heating works, which has an output of 320 kw. It was feared that especially miscanthus woodchippings would be unable to be incinerated without problems. The field was prepared by Wilhelm Borgmann in accordance with instructions issued by Agrobränsle, the Swedish cutting supplier. This was equivalent to what is required for the planting of maize. For research reasons, exactly half the area was fertilised using Terrahum quality compost from the GVoA composting works. This is intended to prove whether fertilisation leads to demonstrably better tree growth. The cuttings were planted in double rows at cuttings per hectare. The cuttings had a length of 20 centimetres and were taken from one-year-old growth. They were delivered in cartons, : Wilhelm Borgmann and two apprentices planting the 13,000 cuttings Werner Hake with the JENZ apprentices in the middle of the 5-mon th-old and cooled down to a temperature of around 3 degrees in a refrigeration unit before planting. Planting itself took place using a planting machine which was operated by two JENZ apprentices. The planting area is 150x75x150 cm. Spacing within the rows is around 65 cm. Each hectare required around four hours of planting work. Weed control in the first year is crucial for the success of the planting operations. This is always emphasised in agricultural literature, but the intention was to do without chemical weed control as far as possible. The area was prepared using Roundup and resprayed shortly after planting the cuttings. After this, no more weed control was carried out and the area was left to itself. The result of this concept was unfortunately heavy weed growth, which considerately restricted the willow growth. For this reason, the JENZ apprentices had to remove the weed by hand in the autumn. Weed growth was particularly strong in the area which had been fertilised using compost, so that in the end composting cannot be considered to have been a success. Pupils at the Petershagen secondary school, which is connected to JENZ by a school sponsoring scheme, carried out a planting sche-

15 Layout-16seiter_englisch :12 Uhr Seite 15 t energy forest in Petershagen -mon th-old willows me using homegrown willows on 800 square metres of land to form a comparison with the Torbis variety. This comparative planting was intended to show whether the Swedish willow really was a "turbo willow" variety. The fact that the Torbis was obviously growing considerably better than the homegrown willows could be seen after only one year. For reasons of cost, the area was not fenced off against wild animal feeding. Since the field was only one hectare in size, and local deer populations were low, this was not considered necessary. In addition, Torbis willow leaves are considered to taste very bitter to deer. The experience gained after one year of growth shows that wild animal feeding levels have been very low. Questions must naturally be asked about the cost of planting. Costs must, of course, be viewed in relationship to the yield. Since this is a long-term project, a definitive statement on this matter can only be made after several turnovers. The fact of the matter is that the price for 1 lcm of willow woodchippings is certainly competitive at current fossil energy source price levels. Energy forestry should certainly not be considered purely from cost viewpoints. According to an investigation made by the Bavarian Regional forestry office, the biodiversity in such areas is up to 10 times higher than that in adjacent fields. In addition, tree growth reduces nitrate concentrations in the soil. Seventh year pupils in Petershagen secondary school measured the length of the willow cuttings during mathematics lessons last September. In addition, teacher Dieter Schäpsmeier divided the overall area into sections. The willow cutting length was measured in each section. The results showed that the average length was as high as 1.73 m after only five months. The evident advantages of the planting scheme have been subject to considerable attention in the area. The efforts made have not been without success. As a result of this scheme, further contracts for the renewable planting of rapid-growing willows on a five hectare area have been signed. First growth after around 14 days

16 Layout-16seiter_englisch :12 Uhr Seite 16 JENZ-Österreich GmbH founded in Kasten JENZ Austria: General manager Norbert Goldnagl with Martina Goldnagl and Raimund Hengenius The trend is clearly towards direct operations for sales and service of high-quality agricultural and forest machinery. We have reacted to this, and have founded JENZ Österreich GmbH as a 100% subsidiary of JENZ GmbH for the Austrian sales region. The new company is also responsible for sales of spare parts. JENZ - Österreich GmbH has its headquarters at Mitterfeld 9, 3072 Kasten. General manager Norbert Goldnagl is supported by his wife Martina in the accountancy department, Raimund Hengenius is active as service mechanic for JENZ Österreich GmbH. You can reach the new company at: Tel.: / 7819 Mobile: 0664 / Fax: / norbert.goldnagl@jenz.at Raimund Hengenius: 0664 / JENZ South moving house JENZ South is optimising its location. To do this, the location is moving from Aichach to Pöttmes, Aichacher Straße No. 11. The new branch office will be open as of The service department, spare parts warehouse and sales office are all housed in 230 mç of floor area. At the same time, the telephone numbers will change as follows: Sales: / Service: / Fax: / Area Sales Manager Helmut Krammer will be supported by service technicians Stefan Schwaiger and Christian Perkl. Both are trained agricultural mechanics with a wide range of know-how in the handling of agricultural and forestry machinery. You can reach our service technicians on the following numbers: Stefan Schwaiger mobile: 0170/ Christian Perkl mobile: 0170/ The JENZ South team with Helmut Krammer, Christian Perkl and Stefan Schwaiger Bernd Ruhe takes over the northern sales region as Area Sales Manager Since May, Bernd Ruhe has been responsible for supporting our existing regular customers and for the development of new business relationships in this area. Bernd Ruhe has been in the company since After completing his apprenticeship as a mechanical engineering mechanic, he has worked in various company departments starting with machine assembly. During this phase, he worked as a service mechanic dealing with machines in his current sales area. His last position was Central Workshop Manager in Petershagen, and was therefore Service Manager Wolfgang Benditte's right-hand man. Thanks to his previous activities, Bernd Ruhe possesses extensive know-how and well-based technical knowledge about our mobile chipping machines and waste fragmentisers. This means that he is well set up to provide support to our customers and potential purchasers in the solution of the often complicated tasks they set. He can be reached on 0171/ , and by at: b.ruhe@jenz.de. The photograph shows Bernd Ruhe together with Axel Wilharm, who will be working as a service mechanic for the Northern sales region in future. Bernd Ruhe together with Axel Wilharm, who will be working as service mechanic for the Northern sales region in future.