Kele Blog

The Only Game in Town

I am a huge Memphis Grizzlies fan. They are Memphis’ only professional sports team and I’m thrilled with their season. They’ve been on a winning streak lately and I read in the paper where one of the players said, “We’re just going to take it one game at a time” I found this comment peculiar and amusing. It’s a very popular comment as it is often uttered by many players and coaches throughout sports.
How else can you take it other than one game at a time? I’m not sure it’s even possible any other way? Can you imagine hearing the TV announcer say, “Good evening ladies and gentlemen. Tonight’s game features the Memphis Grizzlies vs. the Chicago Bulls AND the Los Angeles Lakers. Apparently the Grizzlies decided to not play it one game at a time“ Surely the outcome would be comical and disastrous.

Here at Kele, the arena I work in, there is never a thought given to taking one customer at a time. We know better. It is our standard operating procedure. To fully serve my customers, I’d be doing a disservice if I tried to do anything else but serve them exclusively. I couldn’t imagine putting a customer on hold to talk to another customer, or trying to enter two customer orders at the same time. Both customers would end up suffering. Customers are too valuable to focus on anything else but the needs of that particular customer.
So give me a call and let me serve you. And please take your time. Don’t worry, because here at Kele you’re always the only game in town.

Energy Efficiency Should Be Part of Tax Reform Solution

As our government quickly approaches the next big political showdown over US deficit reduction measures, constituencies across the spectrum are offering wide-ranging solutions to fix what ails our seemingly incessant poor fiscal standings.  One such set of recommendations near and dear to my heart and profession relates to energy efficiency.  The proposal to which I’m referring comes from the American Council for an Energy-Efficient Economy (ACEEE) and I believe it has a strong chance of providing common ground for lawmakers bitterly divided between strategies of revenue growth and budget reductions.  Their plan calls for both in a manner that pays for itself in energy savings and economic productivity gains.

ACEEE’s research report E132 entitled, Tax reforms to advance energy efficiency lays out six key reforms in a revised tax code:

1) Refine depreciation periods to more accurately reflect the service lives of equipment – For example, major equipment systems in commercial buildings currently have a mandated depreciation schedule of 39 years while the average actual lives of these systems are 15-25 years.  This variance acts as a barrier to new investments in advanced energy saving technology.

2) Refine existing energy efficiency laws – Promote market transformation toward energy efficiency by offering temporary tax incentives with a preset phase out lifespan for energy efficient appliances, homes, commercial buildings and for energy saving retrofits.

3) Promote capital investment in manufacturing – Provide various tax incentives to manufacturer’s looking to invest in more energy efficient production equipment and processes.

4) Add a price on emission – Increase revenues through a tax aimed to reduce the externalities (i.e., negative economic factors) of carbon pollution and lower taxes on productive economic activities (e.g., wages and corporate profits).

5) Remove disincentives to energy efficiency investment from the business tax code – Under the current business tax code, all energy expenses are tax deductible thus giving a larger “reward” to those businesses that use energy wastefully versus those who work to minimize their energy use through investments in efficiency.  One way to address this might be to tax revenues versus profits (i.e., income net of operating expenses like energy costs) but at a much lower rate thereby removing the “incentive” to be less energy efficient.

6) Eliminate or reduce subsidies that target the fossil fuel industry – Promote the creation of a more “level” playing for emerging efficiency technologies that will advance the energy industry as a whole and give US manufacturers of this technology a competitive edge.

These are highlights of ACEEE’s report and ones well worth our legislators’ consideration.  Energy efficiency is at the heart of the building automation industry and our industry (including Kele) stand to gain a great deal if measures such as these gain adoption into our tax code.  But as our industry benefits, so do all Americans through lower energy bills, a stronger overall economy and a cleaner and healthier environment.  Here’s to a smarter tax code that supports a more efficient future for us all.

If you are interested in the details, here is a link to the full ACEEE report, http://aceee.org/research-report/e132

 

The Award goes to… Ohm’s Law!

If there were an awards show for Building Automation and Energy Management; there would have to be a lifetime achievement award. All awards shows have them. For Building Automation and Energy Management there may be none more deserving than Ohm’s Law. Ohm’s law may be the Beatles of Building Automation and Energy Management. The influence of the Beatles runs deep in popular music. Simple, pretty melodies like Dear Prudence and crushing grooves like Helter Skelter can be heard in music today much the same as the relationship of voltage, current, and resistance are used in Building Automation and Energy Management. That said I would like to nominate Ohm’s Law for a Building Automation and Energy Management Lifetime Achievement Award.

Ohm’s Law

Ohm’s law is the very foundation of how Building Automation and Energy Management get done. The simple relationship of Voltage, Current, and Resistance makes controlling a building with a computer possible.  Ohm’s Law is stated as:
V=I X R

I=V/R

R=V/I

V=voltage expressed in Volts

I = current expressed in Amps (note that 1000 milliamps = 1 Amp or 1 mA = 0.001A)

R = resistance expressed in Ohms
One common use of Ohm’s Law is signal conversion. Using a 4-20mA signal to operate a device controlled by a 2-10V signal is a fairly common occurrence in Building Automation and Energy Management.  Here is how it works:

V=I X R

V = 4 mA X 500Ω

V= 2

V=I X R

V = 20 mA X 500Ω

V = 10

Applying a 500Ω resistor in parallel to a 4-20 mA signal creates a 2 – 10 Volt control signal.  Here is a wiring diagram from a direct-coupled actuator that uses this:

diagram

 

Another application to consider is how does a Building Automation or Energy Management system sense temperature? Ohm’s Law, that’s how. Thermistors and RTDs are devices that have resistances that change with temperature. Since resistance can be calculated by applying known voltage and current values, computers can “sense” temperature using Ohm’s Law (R = V/I). Once the resistance is known the temperature can be associated via either a calculation or look up table.

temp chart

 

Lights Out?

As many of you may be aware there was a very highly important football contest televised this past Sunday.  I will not name the contest because I do not wish to draw the attention of the sanctioning body or it’s league offices.  During this unnamed football contest there was a strange occurrence, an anomaly, a freaky thing: the power went out.  There were no lights on one side of the stadium.  It brought the game to a halt and many, myself included, stayed tuned to the broadcast.  I read the following day that (however they estimate these things) not a single viewer was lost.  Hmm….

After thinking about it for a while my guess is that many like me stayed glued to the broadcast because in America today power outages are a bit of a novelty.  The power was restored 34 minutes after it went out and the game went on.  It was a good one too.  But I still had to wonder about the power outage and what happened.  I’m sure that everything was checked and double checked – but it still happened.  Chances are that if you are reading this you have most likely seen something like in your professional career.  Have you been part of a project that was checked, double checked, and something still went wrong?  Please share: either reply here or send to david.roames@kele.com  I might even pick a winner or two and send out some prizes. 

 

 

Energy Efficiency meet Investors. Investors meet Energy Efficiency

One of the major customer groups Kele serves is the contracting arms of ESCOs (Energy Service Companies).  We work with the great folks on the front lines in this industry everyday and we grow when they grow.  We believe in the work they are doing (making buildings safer, healthier and more energy efficient for occupants and owners) and want to see them succeed.  That being said, I’m always very interested in news I believe will be good for their industry and, in turn, good for Kele.  I just came across an article today on Green Tech Media’s website (www.greentechmedia.com) that might prove to be great news.

One of the key issues ESCOs run up against when selling major commercial energy efficiency retrofits is financing.  They know that energy savings are there and are even willing to put their necks on the line through PBCs (Performance Based Contracts) that guarantee the client a certain level of savings or they don’t get paid.  However, PBCs can limit the scope of a retrofit project as they tend to focus on the “lowest hanging fruit” with regard to energy savings.  These initial steps, while important, are typically smaller in scale and offer the most immediate payback while “deeper” retrofit items with larger but longer period paybacks can get tabled and tabled usually means filed away never to be seen again.  Financing these “deep” retrofits can prove to be a conundrum.

Unlocking the riddle of how to standardize and accurately model the energy savings and securitize the resulting cash flow from lower utility bills has long been the quest of many proponents in our industry.  In other words, how do we convince bankers that these energy savings are real and can produce stable profit streams (i.e., interest) from loans they provide to clients who want to renovate their buildings to save energy? The Environmental Defense Fund (EDF) has been tackling this issue head on for the last two years and may be on the path to “cracking that nut” with its Investor Confidence Project (ICP).

With its set of standard protocols for large, medium and multi-family sites, the ICP hopes to provide “the base minimum requirements for an investment quality analysis on how to maintain and validate lower energy use.” This is what the investors have long needed to feel safe in loaning their money to clients for a retrofit project and by providing this method of securitizaiton, ESCOs may find themselves with a lot more retrofit work on their hands.  At which point, Kele will be ready and waiting to service those customers and “make it easy” to get the job done.  Here’s to hoping we finally solve the energy efficiency financing issue and unlock the huge amount of savings that lies untapped in most commercial buildings out there.

For more information on this topic, here’s a link to the article I referenced above: Can EDF Bring Energy Efficiency to the Investor Market?

What is next, endicator?

In my last blog entry I raved about the endicator power monitor and how it will make my life easier and that is all true.  What the designers have done, unbeknownst to them, is they have made life easier for future DR too.  I’ll try to explain.

Chances are if you are reading this you are either a building automation professional or my Mom (love you Pumpkin) so I can be a little snarky with this part.  There is a commercial for a home security company that shows a home being blanketed in a warm blue blanket of 0s and 1s.  What could be more comforting than knowing your worldly possessions are protected by technology that is older than my father (no offense Pop)?  Don’t get me wrong, digital switches are a very effective and highly efficient way of detecting abnormalities and initiating alarms, but it is hardly innovative.

Innovation is used to advertise almost anything that exists.  I don’t know much about marketing but I’m sure that the wheel V2.0 was depicted on a cave drawing as being so advanced that if you were still using wheel V1.9 or less you were behind the times.  To get the benefits of wheel V2.0 you had to upgrade.  The axle was not available as an upgrade for older versions of the wheel.

This is where the endicator power meter shines and what makes it, in my humble opinion, the most exciting product Kele has ever introduced.  The endicator is ready for the next big thing you need to do with a power monitor.  The endicator can be ordered with or without communications cards.  Units can come from the factory with communication cards for BACnet, LON, Modbus, and N2 OR they can be added/changed in the field. Firmware updates can also be done in the field.   This means that as your customer’s needs change you can upgrade them – and it doesn’t stop there.  I don’t know what the next big thing will be.  It might be adding internet capability or (gasp) cellular.  Being able to upgrade in the future is truly innovative.

I guess to sum it up; the endicator design team has given me a gift with this product.  There is not much in life that is easier than being able to say “yes” to a customer and I’ll be able to say that a lot with the endicator.  This is where you come in.  Where do you see power monitoring going?  I’d like to know.

Managing Shipping Costs

In today’s economy, all of us are looking for ways to be more cost effective. One cost that is visible is shipping & transportation. Companies look for ways to trim expenses in this area. Kele helps our customers do this by being proactive in our efforts to efficiently manage the supply chain process.

Here are a few ways that Kele helps you be more cost effective.

1) When you place an order with Kele, the product is shipped out of our warehouse, the same day you place your order with us. Most manufacturers have either a very early cut off time for same day shipping, or they have a 24 hour process time. Rarely will you get a drop ship order that goes out the same day directly from a manufacturer.

2) Most orders from customers contain products from different manufacturers. Since Kele carries $10 million in inventory from different manufacturers, we can consolidate the products into fewer packages. Fewer packages equal lower shipping costs. We have also negotiated very favorable pricing that allows Kele to ship your packages in an expedited time frame. This means you get your products faster, and at a lower cost.

3) When Kele says free shipping, it really is free! Since we purchase products in large volume to bring into our warehouse, we have been able to take advantage of manufacturer’s free freight offers. Their minimums are usually quite high, over $1000 and up. These minimums are easy for Kele to meet, therefore, no added cost to the customer.  To be eligible for KeleSaver free freight, your order must be placed through Kele.com, shipping to one of the 48 contiguous states and the order total must be $750 or above.  Click here to learn how to receive KeleSaver free freight.

Another way that Kele helps with your shipping cost, is that we offer kitting. We will package your bill of materials into one shipment, tag it for specific locations on your job site, and ship in time for you to receive on the date you specify. Having your products from different manufacturers, shipped from one location, to your job site – this eliminates the cost of your employees time sorting and moving products around on the job site. That’s a cost that isn’t charged to you, but surely comes out of your bottom line.

We want to help you manage your shipping cost, and we do that by managing ours.

Kele – “We make it easy”.

Making Your Job Easier (and Mine too)

My first exposure to power monitoring was the WT series. I started out in the warehouse shipping them. Then I progressed to stripping the wires used for the CT shorting assembly. After that I assembled them, put them in enclosures, and added the shorting switches when they were ordered. From the warehouse I moved to the sales department where I got to enter orders for WTs. Finally, I moved to tech support where I got to recommend, sell, and troubleshoot WTs. I am not ashamed to say that it was one of the most difficult challenges. Power monitoring, the WT in particular, made me cringe. High voltage/high current electricity is dangerous. While the WT was a fine product; it was very hard to troubleshoot – especially over the phone.

Then Kele had a significant breakthrough: The PT-9000 Series PowerTrak Monitoring Interface. Even the name is cool. It had 9000 in the series name long before Internet memes taught us that 9000 = cool. The PT-9000 went way beyond the WT. It was like adding indoor plumbing. The PT-9000 has 2 configurable 4-20 mA outputs and a pulse output for kWh. It also has lights, wonderful lights that tell the full story of how the unit wired – a gift to the telephone trouble shooter. To top it off it has an auto configure feature that corrected CT/phase wiring errors. Not long after the launch came the communication abilities (BACnet, LON, N2, Modbus) that made the user capable of capturing parameters never dreamed of by the WT.

And now we have the endicator™ Intelligent Power Monitor with its 58 monitored parameters, easy to use interface, installer focused design, standard NEMA 4X enclosure, I could go on for quite a while with this. I’ve only played with the beta but I’m pretty sure it can change Coke to Pepsi and find your car keys. It’s that cool. All kidding aside the endicator™ launch is very exciting for me. It truly is the evolution of power monitoring.

The WT series is still alive and working in many installations around the world and we still get the occasional tech call about them and they still scare me a little, but that doesn’t stop me from helping when I get those calls. Truth be told the WT did make me a better tech support person, kind of like the fat football coach that always made you run, called you horrible names, and yelled at you all the time. Sure you hated him, but he made you better.

The Dark Arts

Sometime last week I answered the phone in my usual manor when the man on the other end asked simply “tech support?”

 To which I replied, “Yes, this is tech support”.

“I need someone that knows the ‘dark arts’” he said.

“I don’t know who you are.  I don’t know what you want.” I told him.  “If you are looking for ransom, I can tell you I don’t have any money.  But what I do have are a very particular set of skills, skills I have acquired over a very long career.  Skills that make me…”

OK – I didn’t really say that.  You caught me.

When the customer asked for someone that knows the “dark arts” (that part is true) I did ask him if he was talking about pneumatics, which he was.  Pneumatics, the dark arts of the control world, I wish I had thought of that.

Truth be told, there is nothing “dark” about pneumatics.  Pneumatic systems, when properly installed and maintained, have always been highly efficient and had the ability to provide excellent control.  It should also be noted that pneumatics are not dead.

Many Kele vendors, including Schneider Electric, Johnson Controls, and Honeywell still providea full line of pneumatic parts.  We even have a section of our catalog dedicated to pneumatics and, more importantly, we have people here at Kele that are here to help you with your pneumatic applications.  There is no need to fear the “dark art” known as pneumatics, just call Kele.

Get Ahead of the Curve

Understanding and then selecting the right temperature curve might seem like a daunting task. To a newbie, it might seem impossible but there is a logical, systematic method to selecting the right temperature sensor.

 

Basically, the thermistors we use in our systems have negative temperature coefficients meaning as the temperature rises, the corresponding resistance decreases; but, the relationship is far from linear.

 

We refer to thermistors by their resistance value at a specific base temperature, usually 77°F (25°C), and a “Type” number that designates the specific relationship of resistance to temperature throughout the relevant range.

 

This relationship depends upon the mix of materials from which the thermistor is made, and for simplicity’s sake, each recipe is assigned a different designation. These are listed in product specifications, ordering information, and the Technical Reference sections in both your Kele catalog and the technical reference section of Kele.com.  To make it easy, you can also click here..

 

For example, the Precon ST-S3E Executive wall sensor uses a high-quality Precon Model 3 thermistor. This sensor has a resistance value of 10 kΩ at 77°F (25°C), and varies according to the Type III temperature/resistance curve.

 

The important take-away from this is to make sure that both the base resistance and the type designation for a thermistor sensor match up with the BAS to which they’re connected.

 

RTD sensors have positive temperature coefficients, meaning as the temperature rises, so does the resistance value of the sensor. Like thermistors, RTDs are classified by a base resistance value, but at a different base temperature, 0°C (32°F). RTDs behave in much more proportional way than thermistors as the change resistance.

 

Each controller is designed and manufactured to use a specific temperature curve. Using the wrong curve will lead to poor control due to inaccurate temperature sensing. Easier still, call Kele and ask for Technical Sales. We’ll help you pick the sensor that’s right for your application!