Rittal TopTherm EC fan-and-filter units

Rittal offers a more energy efficient means of ventilating enclosures by supplying electronically commutated (EC) versions of the successful TopTherm fan-and-filter unit, in all but the very smallest size.

Using the same diagonal fan technology as the standard variant, Rittal’s TopTherm EC fan-and-filter unit provides improved performance against static pressure, offering a more constant air throughput and energy savings in excess of 60 percent over previous models. Compliance with ongoing energy efficiency guidelines can be met and exceeded by using EC motors. Intelligent control and fan status monitoring is available for larger units.

Direct monitoring of fan speed is via a tacho-signal output with a malfunction or failure signal, prompting immediately action, minimising the risk of component failure in the enclosure.

Infinitely variable speed control offers a means of conserving energy further by operating the fan at a speed determined by the demand for cooling. A programmable logic controller (PLC) may be used to control the fan motor, via a 0-10V DC or pulse width modulated (PWM) signal.
A sensor that controls the speed of the EC motor by comparison of the actual temperature with a fixed setpoint of 35 °C, will increase the fan speed to produce a cooling effect as the temperature approaches the setpoint, will soon be available from Rittal.

Rittal TopTherm EC fan-and-filter units

Rittal TopTherm EC fan-and-filter units

Rittal enclosures for industry and data centres http://www.rittal.co.uk

Rittal’s new Service Website

In recognition of the growing importance of “Service in the field” Rittal has enhanced its’ service capability with the launch of a new dedicated website.


Offering customers the ability to access essential information quickly and easily, the new web site enables clients to learn more about Rittal’s flexible service agreements and to request an engineer, ensuring reduced response times.

Containing a comprehensive library of manuals, allowing quick and easy access to hundreds of documents, the new website also features a spare parts selector to help clients and panel builders identify the correct spares and be confident quality products are used.

Underlining Rittal’s commitment to work in partnership with customers, the new website will provide a means to achieve a fast response in case of breakdown and reduce unnecessary downtime cost.

“We hope that anyone using Rittal’s International Service website will find that Rittal offers service expertise unparalleled in the industry” said Nick Turner, Rittal’s Service Manager.

Rittal New Service Web Site

Rittal New Service Web Site

Rittal enclosures for industry and data centres http://www.rittal.co.uk

Save Energy by Cooling with Water


Rittal air/water heat exchangers are capable of cooling the air in an enclosure to a temperature lower than that of the ambient air. Heat to be removed is transferred to a water circuit and may be conveyed to a remote location before being dissipated. The lack of dependence on ambient air results in a maximum operating ambient air temperature of 70 °C.  Air is recirculated inside the enclosure maintaining an ingress protection category of IP 55.

Cooling with water may also be considered from an energy saving perspective. Air/water heat exchangers supplied with the eComfort controller incorporate the Eco-Mode control functionality. This employs an intelligent strategy to effectively target the use of energy by disabling the internal fan when the temperature inside the enclosure falls to a predetermined level below the setpoint. The fan is then pulsed periodically to ensure the accuracy of the sensed temperature before being permanently enabled when the temperature rises above the predetermined level.

Although the capital cost of a cooling system incorporating multiple air-to-water heat exchangers and a single water chiller may be greater than that of an equivalent number of refrigerant based cooling units, energy savings are typically in the region of 40 per cent.  Efficiency of water cooling systems may be further improved, particularly in the climate of the United Kingdom, by locating water chillers externally and integrating dry air coolers to take advantage of free cooling.


Rittal enclosures for industry and data centres www.rittal.co.uk


Rittal at the EIC connect event

EIC Connect events have two key goals – to help major international companies understand UK capability and to generate networking and revenue opportunities for the UK supply chain.

EIC  Connect  encompasses  a  series  of  Supply  Chain  Briefings,  a  Conference  and Exhibition covering global opportunities and updates on nuclear new build, gas & coal fired plants and renewable energy projects.

At least 400+ UK companies are expected to attend the event – Rittal was there.


Rittal Enclosure Systems & Racks for Industry and Data Centres www.rittal.co.uk

Uncertain energy policies crippling UK datacentre industry’s future

Uncertainty and procrastination on energy policies could cause potential investors in the UK’s datacentre industry to look abroad instead, according to a climate change expert from industry body Intellect UK.

Government policy must stabilise to ensure the future of the UK datacentre industry, warned Emma Fryer, associate director of climate change programmes at the technology trade association.

As bosses from the big six energy companies are called before MPs amid consumer outrage over recent price hikes, Labour leader Ed Miliband’s proposals for a freeze in residential energy prices have been gathering significant momentum, according to Fryer.

“However, what’s much more dangerous than price hikes – which have been anticipated by the datacentre industry – is the continuing volatility of UK energy and climate change policy,” she said.

“The irony is that much of the uncertainty over energy prices has been created by government taxes and levies. And now, attempts by politicians to put their footprint on energy are causing further uncertainty that’s jeopardising the future of the datacentre industry in the UK by forcing potential investors abroad,” added Fryer.

Uncertain energy policies crippling UK datacentre industry’s future.


Rittal Enclosures and Data Racks www.rittal.co.uk

Realism should rule in infrastructure debate | Opinion | The Engineer

Realism should rule in infrastructure debate | Opinion | The Engineer.

Stuart Nathan

So here we are again. Business case for High Speed 2, take five. In some ways  this reminds me a little of Lewis Carroll’s the Hunting of the Snark — not a  poem in several chapters, according to Carroll, but an Agony, in several Fits.  The progress of HS2 is indeed agonising, and the paroxysms of opposition do seem  fit-like. And, like much of Carroll’s work, many dismiss it as nonsense.

There are those who think that taking five tries at the business case for  such a large project smacks of desperation. Among those is Evan Davies,  presenter of Radio 4’s Today programme, who noted that the argument in the new  document had shifted from the increased speed of travel to the improvements in  carrying capacity. Doesn’t that mean you’ve run out of ideas, he asked transport  secretary Patrick McLoughlan yesterday.

But of course capacity has been at the centre of the strategy of HS2 from the  start, as readers of our coverage of the project will know. The  Engineer has been broadly supportive of HS2 because we’ve always spoken to  the engineers involved in planning the project rather than politicians, and  they’ve given us arguments that make more sense. Whether they make £50bn-worth  of sense is another matter, and that’s an argument worth having (and where our  support comes up against serious questions).

It’s the issue of capacity and alternatives which the latest study seeks to  answer. This government’s record with statistics is dodgy to say the least, so  its conclusions must be subject to scrutiny. But the assertion that upgrading  the West Coast Mainline to provide the same capacity benefits as HS2 would lead  to 14 years of service disruption and weekend closures should at least inject  some more realism into the arguments of HS2 critics.

It’s always seemed that suggesting the approach of upgrading existing lines  as an alternative has seemed glib, as though it would be easy, or cheap, or free  from any disruption. Whether or not the business case document is correct, there  can be little doubt that such a severe upgrade would cause a long period of  chaos. Other ‘simple’ fixes would surely also require more complex work than  might first appear — can you just replace current rolling stock with  double-decker trains without extensive rail replacement, reinforcement,  rebuilding of bridges, and station refurbishment to cope with extra  passengers?

If the report  refocuses the pro and con camps on the actual issues, rather than on rhetoric  which doesn’t address the actual engineering, then that has to be a good thing.  A project such as this needs to be discussed, and not in the context of  political point-scoring and hysteria.

The argument that HS2 will take express trains off the West Coast line and  allow it to carry more stopping services seems sound and is familiar to us. It’s  also argued that this would allow the West Coast to carry more freight, taking  heavy traffic off the road. The arguments are strongly dependent on the demand  for rail continuing to rise, and this is something worth debating — with  increasing internet capacity and ‘virtual meetings’, do businesspeople really  need to travel that much? If not, would non-business travel justify the cost?  Would people rather take the train than drive?

We idly wondered whether the arguments over HS2 would have been different if  the project were scheduled to start in the North, with phase one connecting  Leeds and Manchester to Birmingham and phasetwo completing the link to London.  Would there have been less opposition, with the plan more clearly emphasising  the connectivity where there is currently none? The cynical view is that of  course there wouldn’t – the opponents would just be saying “Why build the  line in the North where there aren’t enough people to use it? Put it in the  South where the trains are so full that the doors won’t close!”

Read more:  http://www.theengineer.co.uk/opinion/comment/realism-should-rule-in-infrastructure-debate/1017385.article#ixzz2jD7pLcgD

Ready for winter? Rittal can help

Enclosure heaters can prevent the temperature of delicate electronic equipment from falling to a level at which condensation occurs and is arguably as important as providing cooling during warmer periods.

Rittal’s enclosure heaters with fans have capacities in the range 250 W to 800 W and the smaller heaters, without fans, have an output range of 10 W to 150 W. Providing a high level of energy efficiency due to the incorporation of self-regulating positive temperature coefficient (PTC) technology, the heaters benefit from a development using computational fluid dynamics (CFD) and a compact physical size that belies their heating performance.

Positioned anywhere inside the enclosure, Rittal heaters may be fitting being either by snap-fastening onto 35mm support rails or direct screw-fixing onto TS 8 punched frame sections. Quick and easy assembly is completed using clamp-type wiring terminals.

Control is effected simply by the inclusion of a thermostat or hygrostat in the supply to the heater, ensuring that either a minimum temperature is maintained or maximum relative humidity is not exceeded.

Rittal’s enclosure heaters are now available with CSA approval and can be installed on systems for export to Canada.

For more information visit our web site: Rittal Ltd www.rittal.co.uk – energy efficient enclosures and data centre solutions

AE application with heater-s

Interesting article from theengineer.co.uk

China Crisis?

16 October 2013 | By Stuart Nathan

The chancellor of the exchequer, George Osborne, is in China, attempting to  open the floodgates to a rush of investment from its overflowing coffers from  mass manufacturing and raw materials into the UK economy. A major focus of the  trade mission is to secure investment in the UK’s nuclear sector, with an  agreement signed yesterday on civil nuclear cooperation between the two  countries and talks believed to be taking place on China’s state-owned operator,  Chinese General Nuclear Power Group (CGN), taking a substantial minority stake  in the Hinkley Point C station which EDF is proposing to build in Somerset.

The Financial Times is reporting that part of the deal will allow  CGN itself to build and co-operate a nuclear power station in the UK at some  unspecified point in the future, subject to the same safety regulations that  other operators have to meet. CGN’s reactor design would also have to pass the  Generic Design Assessment necessary for any new reactor to be approved for UK  use.

We’re all now aware of the government’s approach to UK infrastructure: it  doesn’t matter who owns it as long as it works. But this one will ring alarm  bells.

When EdF is saying that British firms can’t reach the material traceability  standards to even provide components for Hinkley Point — UK engineering  contribution seems to be limited to digging holes and pouring concrete — should we really be laying down quite as much of a red carpet to Chinese  firms, whose regard for safety is an unknown quantity? In fact, with continuing  concerns about Chinese cyber-attacks on foreign governments’ computer systems,  should we really be inviting companies which many believe to be effectively arms  of the Chinese government into our critical infrastructure at all?

Read more:  http://www.theengineer.co.uk/opinion/comment/china-crisis/1017316.article#ixzz2htEX1KoC

Rittal Enclosures www.rittal.co.uk