Freeloaders and Geniuses from the Universe Next Door

19 10 2010

You know what torques me off, or make that torques us off more than anything else?  I’m saving it for a future rant.  Stay tuned.

No really, it’s “prospective” clients, many times end users that have screwed up buildings beyond reproach or wasting energy as though they just want to release all the carbon locked up in fossil fuels and get it over with.  They ask for help but in no way intend to pay for it or take action for anything substantial.  We may have even demonstrated, clearly by benchmarking or other means with specific measures that they could make their utility shut down a 500 MW power plant if they would just do something.

But no!  They want to know something trivial like how much energy/money they’ll save with a system that will put unattended PCs to sleep and not mess with anything substantive.  Never mind every PC on the planet has this built in and it’s about as hard to negotiate as turning on the television.

They’ll ask how to catch a three pound shad when you have a loaded harpoon with a giant blue marlin at point blank range (just go with the metaphor even if it is totally absurd).  Take the damn harpoon and shoot the thing, man!  Well gee, I just don’t know.  I haven’t used one of those things before.  I might shoot myself in the foot.  Is that tip sharp?  And they keep coming back for more panfish advice.

You may have spotted these people in public.  They go to the grocery store around noon Saturday to eat everything available for sampling, for their lunch, and probably leave with a half gallon of milk and a loaf of private label bread.  They sample six beers in a brew pub, order a can of Pabst and leave no tip.

And then there are those who believe the utility should pay for everything, and I mean everything.   We were working a school district for retro-commissioning and I believe they have some good opportunities, but when the board discussed it, a genius said, no.  He wanted the utility to build a remotely-sited wind turbine (because their location is lousy for wind energy) paid by the utility to generate electricity for their facilities and do it on a net metering sort of contract.  I am not kidding you.  Gee, that’s a great idea.  Let me get right on that.  I almost got brain damage from oxygen deprivation.  I was laughing so hard.  I’ve heard of customer entitlement mentality but this was from another universe.  How do you calibrate a customer like that to life here on earth?

We also have to beware of death by a thousand cuts.  A client may only want a half baked high-level assessment.  No matter how loud and clear we describe WHAT the project IS NOT, after we present the results that clearly meet the contract scope of work, some start asking for details on specific measures.  Where do I buy one of these?  Do you know any good contractors?  What capacity of doohickey do I need?  Some utilities, thankfully, are offering compensation to answer these sorts of questions.

Think of it this way.  If your house is a hog, it’s probably because it leaks like a sieve.  You can’t just take a couple tubes of silicon and slop it on some windows.  I know what I don’t know, and I know there are a boat load of places for infiltration/exfiltration to occur and like life in the commercial and industrial world, if you want results, you need to hire somebody who knows what they are doing.  I’ll pay a guy $500 to do it right before using a buffoon for free, any day.

NOTE: This is not a solicitation to weatherize my house.

Tidbits

Wall Street Journal readers responded to the source article from last week’s column.

Commenting on the letters, the National Resources Defense Council guy projects avoidance of 300 large power plants and $12 billion in annual savings.  In an Energy Brief a couple years ago, I projected 156 large power plants (500 MW apiece) and $9 billion in savings.  Close enough for hand grenades but I’m guessing he’s a little heavy on the power plants.  Is there diversity figured into his numbers?

Osram, a German company is retooling one of its American plants to manufacture efficient lighting.  Meanwhile, General Electric is whining that it has to close its last lighting plant in the U.S.  Jeffrey Imelt is a terrible CEO for GE.  General Electric used to be an entrepreneurial innovative company under Jack Welch.  Now it is a company in search of markets for status quo products and services, and government handouts.  If you don’t innovate you die in the private sector.  It matters not what you do.

One guy argues CFLs will require more heating energy consumption.  Yawn.  Fuel oil would be cheaper heat and if incandescent bulbs are such a great source of heat, what about summertime?  The electrical engineer makes good points that CFLs are not as bright as advertised.  We’ve always recommended CFLs at 33% the power, as opposed to 25%, of the incandescent being swapped out.  This is essentially the next size larger CFL than “recommended” in the business.

Another guy plays the mercury card.  Yawn.  I dismissed that fallacy in the same Brief.

written by Jeffrey L. Ihnen, P.E., LEED AP





EE Ignorance

11 05 2010

A few years ago I was on a marketing visit to a hospital for non-energy related services and of course I had to work energy efficiency into the conversation.  “So, have you done any energy efficiency upgrades in recent years?”  “Yes we replaced windows in the old section of the facility and installed new boilers.  We’re all set with energy efficiency.”

Palm, meet forehead.

I could be a lousy salesman but that conversation ended with a pregnant pause.  This was a hospital, probably the most energy intensive type of commercial facility there is, and replacing windows might reduce consumption by 0.01%.  New boilers could do anything from saving some energy to using more depending on how they are controlled.

One of the major obstacles to capturing real and substantial savings in commercial buildings is overcoming ignorance of how these facilities use energy.  They use energy far differently than homes but Joe in the maintenance department or Sally the executive think the way to 10% savings is new windows, new boilers and more roof insulation.  Good luck with that.

When I talk about energy efficiency in commercial and industrial facilities I talk about controls, systems and processes, NOT pieces of equipment and components.  At the end of the presentation I say all boilers are 80% efficient.  All chillers use 0.6 kW/ton.  All lighting fixtures produce 80 lumens per Watt.  Of course this isn’t literally accurate, but the point is, the building can be operating very poorly as a system, such that plus or minus 20% on these performance metrics is dwarfed by poor operation.  The control programming is awful.  The system could use some additional control points and maybe a few components need to be added.  When added up,  the waste generated by these controls and system operations dwarf the few percentage points for the boiler efficiency or one or two tenths of a kW per ton for the chiller.  See The More You Spend The More You Save.

I was reminded of this once again this week as I read this article on the Empire State Building.  The owner says windows are “a key to efficiency”.  Even including the daylighting controls he is talking about, this won’t amount to a peanut of the 38% energy savings they plan to achieve.

Columbia University research declares green and white roofs in NYC “help prevent energy losses”.   That may be factually incorrect but the more arguable thing is, it has a tiny effect on heat transfer through the roof.  Green roofs include plants which require dirt and moisture to grow.  Moist soil has lousy insulating qualities.  The benefits of a green roof include reduced runoff into rivers, lakes, and oceans, transpiration which reduces temperature on the roof’s surface and thus reduces heat island effect, roof life extension, and possibly energy savings if building cooling system equipment is located on the roof.  A white roof will save some cooling energy but costs you some extra heating energy in winter.  See  our Energy Brief “Cool Roofs in Cold Climates“.  I’m not bashing green and white roofs.  I would use one or both on my building, but for reasons other than energy efficiency.  These other benefits pile up.

We surveyed 150 buildings in NYC about 16 months ago and believe me, there is huge potential in the city but it isn’t going to be realized with windows, boilers, and green and white roofs.  Like the Empire State Building probably was prior to this $20 million retrofit, buildings have 1960s and 1970s technologies and crappy old pneumatic controls.  There are steam-turbine-driven chillers, which have to have horrible efficiency because the steam pressure is so low.  The heat rejection would be massive.  According to my calculations, with a perfectly efficient turbine and an efficient chiller, the cost to operate a steam driven chiller would be twice that of an electric chiller at the same efficiency.  Why?  Because of the relatively very low steam pressure (compared to power plants) the steam-driven chiller uses.  If I were to use real numbers, this could easily balloon to 6x the cost.  E.g., these old chillers are probably half as efficient as a new one- tops, and the turbines won’t be perfect like I assumed.

So what is the solution to widespread ignorance of commercial and industrial facility operation, systems, processes, controls, and how to reduce energy consumption?  Send me an email and I will tell you.  jli@michaelsengineering.com.  It works really well.

written by Jeffrey L. Ihnen, P.E., LEED AP