Posted By homemade, Jul 29, 2012 at 10:01 AM

1. #26

### mepellet Minister of Fire 2. ```NULL ```

Aug 10, 2011
2,141
276
Loc:
Central ME
A btu is a btu yes.

The definition is something like..... the amount of energy required to increase the temperature of 1 pound of water by 1 deg F.

2. #27

### mepellet Minister of Fire 2. ```NULL ```

Aug 10, 2011
2,141
276
Loc:
Central ME
I am by no means an expert and don't claim to be but not only do I enjoy looking and thinking about these types of things but I also enjoy being able to help a couple of fellow forum members out. Especially since I have learned so much from here about pellet stoves. Looking into upgrading our old wood stove in the next few years so I am sure I will be turning to the wood burning forum then.

3. #28

### woodgeek Minister of Fire 2. ```NULL ```

Jan 27, 2008
3,678
639
Loc:
SE PA
Um, if the material leaving is char (carbon) and not ash, then you have incomplete combustion and less than 8000 BTU/dry pound input. Math is easy and measuring is hard. Measurement error? Are you measuring the water flow volumetrically at the same time the unit is running, or relying on a flow meter (which are notoriously inaccurate)??

4. #29

### mepellet Minister of Fire 2. ```NULL ```

Aug 10, 2011
2,141
276
Loc:
Central ME
Very good points. The weight of a gallon of water does depend on temperature. I commonly use 8.34 pounds per gallon which I believe is at 60 deg. F.

When the OP says an increase of 45 degrees I assume he means that water coming into the heating device is 45 degrees lower than the water coming out. So he either must be dumping 1 gpm out of the system or losing the 45 deg F out in a heat dump zone. True about the electrical requirements. I was only looking at the combustion efficiency.

I think you need to consider the 51,000 lbs when calculating btuh. You need to get the gallons per MINUTE to gallons per HOUR. Otherwise your units would be off. Yes you can say 1hp equals 2550 (1hp = 750w & 1w = 3.4 btus) but most of that energy goes to moving the water. It's like when you use a large fan in an air handling unit. You don't count 100% of the fan's hp in system heat gain. Only a very small fraction...

Very good point. This will be a hard item to put a real number on.

Modern 95% efficient boilers can be had...so efficiency of this level is not out of the question, but they need a clean burn and actually condense the water out of the flue gas to recover that extra bit of steam energy. Of course, heat pump water heaters can approach a 'coefficient of performance' (COP) of 2.5 or better...which is 2.5 btu out for 1 in, or an apparent efficiency of 250%.

5. #30

### mepellet Minister of Fire 2. ```NULL ```

Aug 10, 2011
2,141
276
Loc:
Central ME
How true it is.

6. #31

### homemade New Member 2. ```NULL ```

Jul 28, 2012
46
9
Loc:
central wisconsin
5 qt ice cream pail in a minute 15 seconds
water is flow out of well at 57 degrees and rising 45 degrees and dumping on ground don't have city water as you see

7. #32

### woodgeek Minister of Fire 2. ```NULL ```

Jan 27, 2008
3,678
639
Loc:
SE PA
can't argue with a well-calibrated pail.

8. #33

### Corey Minister of Fire 2. ```NULL ```

Nov 19, 2005
2,306
162
Loc:
Midwest
Just don't tell me the temperature was measured with a bungee cord, a piece of bailing wire and two twigs from a willow tree!

9. #34

### homemade New Member 2. ```NULL ```

Jul 28, 2012
46
9
Loc:
central wisconsin
willow tree with a crook in it na that is how you find water

10. #35

### homemade New Member 2. ```NULL ```

Jul 28, 2012
46
9
Loc:
central wisconsin
at least that is how my uncle thought he could find it, water witching, impressive to watch

11. #36

### homemade New Member 2. ```NULL ```

Jul 28, 2012
46
9
Loc:
central wisconsin
na a ranco temp controller

12. #37

### homemade New Member 2. ```NULL ```

Jul 28, 2012
46
9
Loc:
central wisconsin
13. #38

### homemade New Member 2. ```NULL ```

Jul 28, 2012
46
9
Loc:
central wisconsin
then i find out water weight per gal changes at different temps for instance
68 water =8.33 lbs
104 water =8.28 lbs
140 water = 8.2 1lbs
176 water=8.14 lbs

14. #39

### mepellet Minister of Fire 2. ```NULL ```

Aug 10, 2011
2,141
276
Loc:
Central ME
Yes, I alluded to this in a previous post above...

15. #40

### homemade New Member 2. ```NULL ```

Jul 28, 2012
46
9
Loc:
central wisconsin
well I just signed letter for a patent attorney wish me luck

16. #41

### Realstone Lord of Fire 2. ```NULL ```

Jan 20, 2012
852
261
Loc:
Southern ON
Keep us posted (at least as far as is prudent regarding public disclosure that is)

17. #42

### maple1 Minister of Fire 2. ```NULL ```

Sep 15, 2011
7,065
1,217
Loc:
Nova Scotia
Sounds like you need a gasifying boiler.

ScotO likes this.
18. #43

### homemade New Member 2. ```NULL ```

Jul 28, 2012
46
9
Loc:
central wisconsin
still looking for someone to help perfect this thing and maybe one day get it insulated, right now I been running it for last three weeks or so, whenever the cold started and using about 2 five gal pails a day heating 2 car garage and old farm house

Realstone likes this.