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TJ and others, My simple mind may have missed the point of these theories, but are you telling me that it is as efficient(financially) to heat my workshop with a running machine as it is with an

Brian, an LED light bulb might be more “efficient” in the sense that you may get the same number of lumens as a 100W tungsten bulb with only a 15w LED bulb, but that’s a different problem. The

Lumens is "work" only as metaphor, and by the same token, heating is also "work".? ?The "work" a heat lamp does is heating for example. Ask yourself this: where did the light "work" go after the

As I noted, may not make sense for you.? Obviously I'm not assessing your specific application, just noting that assessment is more complex than cfm x outside air temp.? For example, there is no

Agreed, the horse has heat, but in the case of lighting, the lumens is the “work”, we get the same amount of lumens from 15 watts (LED) as we do 100W of incandescent. Put the 100W vs. the 15W in

I am an electrical engineer who is 12 credits short of a second degree in mechanical engineering.? TJ is correct in that any energy coming into the room either turns into potential energy or it is

Brian, put your hand on a horse that's just standing around doing nothing, and then put your hand on a horse that's been working.? ?You'll feel the heat. Part of what's confusing is the timeframe of

That assumes I have a large enough heat pump for the additional load.? I do not.

Brett, I found the fossil fuel reserves equally fascinating. I could never comprehend that much organic matter could exist in one place. That is until I learned on a Nova show that bacteria that we

The law of conservation of energy says energy can’t be destroyed, or created, only have its form changed. The actual kw usage, the “draw” you actually pay for - that energy comes into the shop

I’m not sure I agree, show me the heat involved in this: I agree that there is heat created by electrical input, but I don’t think all the electricity consumed is dedicated to heat. For example,

Was there a reference earlier to using a loading dock light arm to suspend the vac hose and power cord?? Perhaps none were long enough and or could not support the load of the hose?? There is one at

Electric motors (like pumps) only draw the energy from the power source according to the amount of WORK being done. A motor idling will only draw the energy from the source through mechanical losses

You are splitting hairs. My point is simply whatever the consumed electrical power is for a given day as measured by your electric meter, ALL of that power turns into heat in your room. Obviously if

TJ, you are presuming that a motor always runs at a constant load. That is not true. And the power consumption of a motor, and the current, depends on the load on the motor.

Brian, yes, all electrical input is converted to heat. The force to cut something turns into heat eventually as well. The power is not all consumed by the motor, but all of that work ultimately ends

Try waxing the table surface first. Brian Lamb blamb11@... www.lambtoolworks.com

No, not all energy to do the work is converted to heat. For example, your saw idles at say 1hp, a heavy cut is consuming 3hp, that’s a 2hp or 1500W increase. Picture a 1500W heater, which

The holes for the bearings are through holes, correct? Brian Lamb blamb11@... www.lambtoolworks.com

Mark, Thanks for the explanation. You are right, I just chose simple words. Law of conservation of energy is something learned early but this last bit I never realized or if I was taught/told did not