Filzen mit Wolle ist in und dabei auch noch kinderleicht! Figuren, Tiere, Hüte oder Schmuck – all das kann man mit der richtigen Technik und der passenden Filzwolle herstellen. Unter der Web-Adresse www.filzundwolle.de finden Hobbykünstler und solche, die es werden wollen jetzt ein großes Sortiment an Filzwolle und verschiedenem Zubehör. Hier gibt es alles, was man für das Filzen braucht.
Im Mittelpunkt des neuen Online-Shops steht das umfangreiche Sortiment an qualitativ hochwertiger Filzwolle. Neben wichtigen Informationen für die Käufer, welche Wolle für welches Projekt die richtige ist, werden verschiedene Garne in unterschiedlichen Farben und Stärken angeboten. Am einfachsten geht das Filzen mit der angebotenen “Wash + Filz-It”- Filzwolle aus 100 Prozent Schurwolle, die sehr gut für Anfänger geeignet ist und aus der sich beispielsweise Hausschuhe oder Taschen filzen lassen. Hier wird zuerst gestrickt oder gehäkelt und dann anschließend gefilzt. Schurwolle im Vlies gibt es ungefärbt in Naturtönen und gefärbt in aktuellen Farben. Diese Wolle besteht aus mehreren Vliesschichten und ist als echter Allrounder sowohl für das Nass- als auch das Trockenfilzen geeignet und gilt als besonders strapazierfähig. Die im Online-Shop angebotene Wolle im Kammzug aus Merinowolle bietet sich vor allem für das Filzen von Figuren oder Kleidung an. Eine weitere Besonderheit ist die Lockenwolle vom Wensleyschaf aus 100 Prozent Schurwolle, die durch ihre Form hervorragend zum Filzen von kleinen Engelsfiguren, Tieren und für weitere besondere Effekte genutzt werden kann.
Neben der großen Auswahl an Wolle gibt es auf www.filzundwolle.de eine große Auswahl an Zubehör. Hervorzuheben sind hier zunächst die passenden Filz-, Häkel- und Stricknadeln, die in verschiedenen Stärken im Sortiment zu finden sind. Neben Nadeln aus Holz gibt es auch nickelfreie Aluminium-Nadeln, die auch für Allergiker zu empfehlen sind. Das Filzzubehör wird ergänzt durch Nadelhalter und Filznadelunterlagen aus festem Schaumstoff. Für schnelles und gelenkschonendes Filzen kann im Shop außerdem die “addi Quick”-Turbo Filz-Maschine bestellt werden. Für Anfänger gibt es darüber hinaus spezielle Startersets und weitere Komplett-Filzpakete. Auch Schritt-für-Schritt-Anleitungen zum Filzen sind im Online-Shop erhältlich. Sie werden direkt zum Download angeboten und sind nach der Bestellung so besonders schnell verfügbar. Neben den Einzelanleitungen zum Filzen verschiedener Tiere gibt es auch Basis-Workshops, die die Geheimnisse des Filzens verraten. Ein weiteres Highlight des Online-Shops sind die Tutorial-Videos zu einzelnen Projekten, die direkt auf der Homepage heruntergeladen werden können.
Webtipp: Filzwolle bei www.filzundwolle.de
Wer lieber vor Ort das Filzen erlernen möchte, kann sich unter www.filzundwolle.de über die Filzkurse in der dazugehörigen Filzwerkstatt informieren. Während der Öffnungszeiten können Interessierte in der offenen Filzwerkstatt in Aukrug wertvolle Tipps erhalten, sich mit anderen austauschen oder an einem der regelmäßig stattfindenden Filzkursen teilnehmen. Die Filzkurse richten sich sowohl an Anfänger als auch an Fortgeschrittene. Angeboten werden unter anderem Schnupperkurse, sowie Kurse zum Hüte-, Pantoffeln- oder Taschenfilzen. Umfangreiches Zubehör und Filzwolle können direkt im Wollladen erworben werden.
The commercial refrigeration process can be quite complicated. Indeed, the technologies involved have dramatically advanced during the past few decades. While a portion of this momentum is centred around higher levels of efficiency, the need to reduce hydrocarbons within the environment has been another key motivating factor. Although this is a rather in-depth topic, it is still wise to take a brief look at how the refrigeration process works and what mechanisms are involved.
Perhaps the most important component of any commercial refrigerator is the compressor. This is a device which pumps refrigerant vapour through a series of coils at a high pressure. As this vapour travels through these coils, it meets the outside air of the kitchen and loses much of its heat. Then, the vapour will cool down the interior of the refrigerator. In essence, the compressor is the main device which enables the vapour to travel through the coils and keep the entire unit cold.
While the commercial refrigeration compressor may require much more coolant to be used, the underlying principles of vapour convection through the coils remains the same. However, it should also be noted that there are several types of commercial compressors which can be used. One is known as a variable speed compressor. As the name hints, it is able to automatically adjust its speed as is required to achieve optimal temperatures. This is ideal when one is looking to reduce energy consumption and electric bills. Also, it is said that this variant can last longer than a traditional model. Another useful mechanism is a variable-frequency drive. Once again, this drive will increase or decrease the speeds at which the compressor motor is running. As a refrigerator (even a commercial variety) is rarely operating at its peak capacity, variable speed drives (or VFDs) can help to increase the efficiency of the unit and lengthen the lifespan of the motor in question.
It is clear to see that this technology has vastly increased during the past few decades. As such systems continue to evolve, the consumer can expect to enjoy even more cost-efficient and reliable refrigerators.
Hydrocarbons are a great oil-less and energy efficient solution to compression motor systems. Where it’s been used in Europe and parts of South Africa, R290 and R60 cooling systems have reportedly used a fraction of previous power consumption under the same conditions at the same location. However the concerns which come with using this solution remain strong. This can be off-putting to companies who would like to be more energy efficient and consumers who don’t want to take on the risks associated with a more combustible gas. Hydrocarbons are flammable which means there are regulations on how much can be used per area and per recharge. In some places they are not allowed to be used.
The traditional method had been to use CFCs (Chlorofluorocarbons) which were very hard on the ozone layer. Then a mixture of HFCs (Hydrofluorocarbons)came along which was better for the environment but still lacking. It has been stated that refrigerant HFO-1234ze, a hydrocarbon mix, has a global warming potential of less than one. There are many variations of refrigerants using hydrocarbons with similar results, just look for the HFO at the beginning of the label.
There is considerable interest in the US to have restrictions on hydrocarbons relaxed or changed to reflect the individual situation. Studies with companies such as Danfoss suggest that a space can be designed or re-designed to make the use of hydrocarbons as refrigeration safe. Some potential uses for hydrocarbons include air conditioning and refrigeration for example small chillers to heat pumps as well as coolers and freezers for the larger commercial food industry. Additionally hydrocarbon compounds can be used in offices and homes as air conditioning and hydrocarbon gas compressors can be used on land and in marine use.
There are ways that compressors can be made even more efficient when used with hydrocarbons. For instance, with various monitoring software it can be easy for a technician to discover which part may not be working at its optimum calibration, or if one compressor in a series is suddenly no longer running before it puts a strain on the rest of the functioning units which may struggle to keep up with the cooling needs. Planned shutdowns for regular maintenance are advised even where the loss of one compressor will not hinder the work of the others. This can mean that the hydrocarbon compressor which is operating at a much lower power use which is monitored regularly can be effectively improved by simple monitoring of systems for functionality.
If you are running any kind of operation which involves electric motors large or small, it is likely you have already heard of the mysterious variable frequency drive. If you haven’t, it is high time you get informed because this invention can cut energy costs, increase production control and efficiency, and reduce equipment wear and tear. Read on for the full details.
The variable frequency drive, also known as an adjustable frequency or variable speed drive, is a special component of electro-mechanical drive systems which controls alternating-current motor speed and torque. It achieves this effect by varying motor input frequency and voltage. It is a component in electric motor systems which typically consist of an AC motor, a main drive controller assembly, and a drive-operator interface for adjusting the voltages and manual controlling.
Nowadays, up to 25 per cent of the total electricity consumption in the world is generated by electrical motors. Given that fact, it is astounding that variable frequency drives are far from widespread. Many fixed-speed electrical motors with an AC power supply can realise considerable energy economies if supplied with a variable speed drive. For example, a motor operating at 63 per cent its former fixed speed will use only about a quarter of its full-speed energy. This produces significant savings at a negligible speed reduction.
Variable speed drives allow for much closer control of motor performance and, thus, improve the quality of operation and help maintain equipment. Fixed-speed motors habitually take high starting torque and experience current surges up to eight times the standard load upon starting. A system supplied with a variable frequency drive, on the other hand, will gradually rev up to the desired speed without the initial shocks. With the reduced stress, both mechanical and electrical, the life and wellbeing of equipment are prolonged. Another useful feature of variable frequency drives is that they facilitate running specific patterns on the motor, which can further help reduce shocks to the system and other undesirable effects. Acceleration and deceleration control are one prominent area where variable speed drives find extensive use.
Even if your equipment came with a fixed-speed motor, this is not a problem. If you determine you will benefit from the upgrade, you can retrofit a variable frequency drive easily.
Variable frequency drive technology (VFD) has been developed to allow speed and torque control of an AC motor. This is achieved by connecting a variable frequency controller to an AC motor. Three phase induction motors are the most common though it is possible to connect it a single phase unit. In simple terms the controller converts AC to DC and then back to 'quasi-sinusoidal' AC power. This allows both the speed and torque of the motor to be controlled by varying the voltage and frequency.
Initially, the variable frequency drive was developed to give control of speed in various industrial processes, and to avoid the power surge associated with starting a single speed AC motor. However the variable frequency drive has found another purpose in compressor systems used throughout industry to provide a high pressure air supply. It has been calculated that 10% to 12% of power produced in the UK goes on creating compressed air. An air compressor that utilises variable frequency drive technology is able to switch speeds automatically, dependent on demand. This amounts to a real saving in compressor life as well as energy costs. With air compressors demanding such a significant amount of energy, it is easy to see why any potential reduction is of value to industry. However, this is not always the case.
The main advantage of utilising a variable frequency drive is in the name – It ability to vary frequency and voltage, therefore speed. However, the drive unit is an expensive addition to a system and where, for example, the compressor is working at a high percentage of its capacity on a more or less permanent basis, there is little gained by the expense of having a variable speed capability. The cost of purchase and installation needs to be weighed against potential energy savings.
The concept and application of the variable frequency drive has found uses through industry in machine processes' allowing smooth start up sequences, variable speed control for different processes on the same equipment, control over production rate and generally, a more accurate degree of control over a myriad of industrial processes. With the high levels of energy required to power an air compressor, it could be argued that this singular process has most benefitted from the development of modern variable frequency drive systems; bringing both control and efficiency to industry.Further information at www.secop.com