With energy costs continually rising, energy efficiency is paid more and more attention in the HVAC sector. Stefan Richter talked to Andrew Cooke, Cooke Industries’ General Manager, about the trend towards more energy-efficient air handling systems.
The Wakefield House Building in Adelaide, Australia, recently realised an amazing 50 percent reduction in fan energy. The new EC plug fan, which replaced the existing centrifugal belt driven fan, has not only shrunk the energy bill, but also increased airflow and cooling capacity of the air handling unit.
Moving ores, concentrates and residues in slurry form are essential parts of industrial mining processes. In an effort to reduce water, energy and chemical consumption, and improve slurry transportation reliability, more and more mining operators are discovering the simplicity and benefits of peristaltic hose pumps.
If a tree falls in the forest it makes a noise, whether anybody’s there to hear it or not. Just like that fabled tree, machines in trouble provide telltale evidence you can read to diagnose their problems – if you just know how to look and listen.
Perry Metal Protection’s new multi-million dollar hot dip galvanising plant in Hamilton offers a level of capacity and capability not previously seen in New Zealand. Stefan Richter drove to Te Rapa to get a first impression of the new facility that will be operational as of 16 January 2012. It inevitably occurs every time iron or steel, atmospheric oxygen and water come together. Iron oxide, better known as rust, is formed in an electrochemical process on the surface of the steel, and the red-brown colour we perceive indicates that the metal has started to degrade.
We have all watched the US troopers with their ‘night-vision’ /infrared capability enjoying an advantage over insurgents in Iraq and Afghanistan or firemen able to see through smoke and find victims in a blaze. The spin-off of a US$500-million US Defence Department investment is now also being applied to improve preventive electrical maintenance in New Zealand commercial properties. Kevin Kevany reports.
Bridon’s products have achieved outstanding results on container cranes and straddle carriers operated by The Ports of Auckland. Stefan Richter learned that this success can be traced back to a tweaked construction and regular lubrication. Auckland-based Bridon New Zealand Ltd have plenty of reasons to be in a festive mood.
In this article Dr Murray comments on the performance of storage systems during seismic events, including the recent devastating earthquakes in New Zealand. Designing rack structures to cope with the unpredictable forces generated during an earthquake requires a combination of detailed engineering, sophisticated computer analysis, and a degree of crystal ball gazing on the part of the engineer into how the storage system may be utilised over its lifetime.
Webster Group’s generators back-up and continually supply power in a multitude of applications throughout New Zealand. They can be found in hospitals, rest homes, on air force and naval bases, through to cowsheds and they also travel around the world on board ships. Stefan Richter visited the company to get an insight view of the generator business.
Electric control valve actuators eliminate the problems of compressed air as a power medium. Today, a major technological advance is available to help control valve users avoid many of the problems and inefficiencies associated with compressed air. The new solution, using electric power, is appropriate and cost-effective for a wide variety of control valve applications in most process environments, especially where users experience problems with frozen air hoses, lack of process precision and stick-slip.
Watson-Marlow 520 and 620 Series pumps prove their reliability in conjunction with Thames Water’s process plants. Tasked with replacing ageing pumps for disinfectant and coagulant processes at Thames Water’s Advanced Water Treatment Works (AWTW) in Walton, Surrey, engineering, consulting and construction company Black & Veatch and TW opted to install a number of 520 series and 620 series peristaltic models from Watson-Marlow Pumps Group.
Thanks to Multivac’s new HPP technology, integrated high-pressure preservation is now available for MAP packed food items to extend their shelf life without heat, radiation or artificial additives. Up to 6000 bar rids the treated food of harmful microorganisms without affecting its nutritional value. Stefan Richter reports. When Sepp Haggenmüller and his friend Artur Vetter built their first vacuum chamber machine in a garage in 1961, they named it Multivac.
Grease operating life is the decisive factor in maintenance. A new grease sensor incorporating an electronic evaluation system enables the condition of grease in bearings to be analysed during operation. Users now have the ability to precisely plan the schedule for replacing grease and to detect any changes in the condition of the grease long before any damage to the rolling bearing occurs.
Heat treatment is simply a function of ingredients, temperature, and time and therefore the outcome is pretty predictable. But sometimes it’s just not that easy. Barry Robinson shares what happened when he was approached by MOTAT to rectify a minor problem with their new tram wheels. Everyone seems to know that if you heat a piece of steel to “cherry red” and quench it in water it will come out hard.
Processed food often has to travel a long way before it reaches the safety of a home refrigerator – a journey which involves numerous risks of contamination or microbial attached, such as salmonella or listeria. To prevent this from happening, machine and installation builders equip their processing filling machines with hygienic automation technology. Consumers are looking for reliable quality when they buy their groceries. Hygienic manufacturing, filling and packaging in the food industry ensures first-class products.
Mercer Stainless has been well known in the New Zealand food industry for many years as a quality supplier of tanks, silos and pressure vessels. What is less well known is that within the team, there is also a group of experienced engineers capable of designing and building conveying equipment including spiral coolers and freezers. Spiral coolers and freezers are typically used in the food industry for efficient cooling when there is limited floor space and to maximise heat transfer.
How you mount your bearings will determine the life and performance of the bearings in the long term. Proper bearing handling and mounting methods will prevent you from unplanned shutdowns and bearing failure that would cost you thousands of dollars. Cleanliness: The first rule Cleanliness is the first rule of proper bearing handling. Whenever possible, keep the working environment clear of sand, sawdust, cement, corrosive substances, and high humidity.
Saving energy is not just about social responsibility. It is also a powerful tool to contain costs, as many New Zealand companies have found out. Jenny Baker reports. The Government recently released its New Zealand Energy Efficiency and Conservation Strategy 2011 to 2016. In launching the strategy, Acting Minister of Energy and Resources Hekia Parata said it promoted practical actions to encourage energy consumers to make wise decisions.