Forum: Geothermal & Heat Pumps
04-02-14, 06:21 PM
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Replies: 77
Views: 51,641
Well, I'm not sure what I'm gonna do yet. I'm...
Well, I'm not sure what I'm gonna do yet. I'm torn between a couple different options. Let me explain.
This top portion, if I built it, would be for my son's bedroom in the basement. He's one of...
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Forum: Geothermal & Heat Pumps
03-31-14, 07:22 PM
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Replies: 77
Views: 51,641
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Forum: Geothermal & Heat Pumps
03-31-14, 03:52 AM
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Replies: 77
Views: 51,641
Cousin It is lurking in the barn: ...
Cousin It is lurking in the barn:
http://i1326.photobucket.com/albums/u654/jeff5may/IMAG0084_zpsaa424bee.jpg
Unfortunately, he isn't a heat pump. Straight piped A/C only. Howls like a werewolf,...
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Forum: Geothermal & Heat Pumps
03-30-14, 12:52 PM
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Replies: 77
Views: 51,641
Spring update:
The unit has been slaving...
Spring update:
The unit has been slaving away all winter, saving me money. There are a few issues that I have decided to live with until the weather warms up. We are in the "swing" season now,...
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Forum: Geothermal & Heat Pumps
12-13-13, 07:14 PM
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Replies: 77
Views: 51,641
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Forum: Geothermal & Heat Pumps
12-13-13, 12:10 PM
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Replies: 77
Views: 51,641
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Forum: Geothermal & Heat Pumps
12-12-13, 12:34 PM
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Replies: 77
Views: 51,641
The next unit I put together will probably be a...
The next unit I put together will probably be a split unit. Since it will most likely be filled with propane or propylene, I want to try to keep all the primary refrigerant outdoors. The unit will be...
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Forum: Geothermal & Heat Pumps
12-12-13, 11:31 AM
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Replies: 77
Views: 51,641
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Forum: Geothermal & Heat Pumps
12-12-13, 07:08 AM
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Replies: 77
Views: 51,641
I already have plans for another unit. It will...
I already have plans for another unit. It will have a massively oversized outdoor heat exchanger in it. By the way the new, "super-efficient" heat pumps look, that's the route the OEM's have gone.
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Forum: Geothermal & Heat Pumps
12-07-13, 08:48 PM
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Replies: 77
Views: 51,641
Yep. I know what you mean here. Water heat flow...
Yep. I know what you mean here. Water heat flow is easy to calculate. Air heat flow is not. The main difference is that air heat is measured in enthalpy.
What is enthalpy, you ask? Enthalpy is the...
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Forum: Geothermal & Heat Pumps
11-14-13, 11:32 AM
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Replies: 77
Views: 51,641
Probably both. I probably need to do the math...
Probably both. I probably need to do the math that AC_Hacker had suggested as to the COP and raw btu output of the unit as the temps drop off. Can someone lead me in the right direction here?
I...
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Forum: Geothermal & Heat Pumps
11-13-13, 11:19 PM
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Replies: 77
Views: 51,641
Fall update:
The unit finally couldn't heat...
Fall update:
The unit finally couldn't heat the whole house last night. For the first time this season, the gas furnace came on around 2AM for a minute. Then every so often until sunrise. Outdoor...
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Forum: Geothermal & Heat Pumps
08-10-13, 12:41 AM
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Replies: 77
Views: 51,641
Summer update:
The unit has been running on...
Summer update:
The unit has been running on autopilot for the whole summer. I've had no problems at all, it just does what it should. I now trust it.
One minor modification I did to the unit: I...
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Forum: Geothermal & Heat Pumps
05-25-13, 07:51 PM
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Replies: 77
Views: 51,641
Update with some lessons learned:
Since the...
Update with some lessons learned:
Since the vibration problem was fixed, this unit has been running like a top! No problems whatsoever out of the unit. I have the programmable thermostat set to...
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Forum: Geothermal & Heat Pumps
02-03-13, 11:07 AM
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Replies: 77
Views: 51,641
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Forum: Geothermal & Heat Pumps
02-02-13, 04:06 PM
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Replies: 77
Views: 51,641
Xringer,
The only thing you really have to...
Xringer,
The only thing you really have to worry about with these units in heating mode, ignoring the obvious, is what to do when it gets cold outside. You have 3 options:
1. Don't use the...
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Forum: Geothermal & Heat Pumps
02-01-13, 10:12 PM
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Replies: 77
Views: 51,641
It just so happens that the last 24 hours have...
It just so happens that the last 24 hours have been the coldest this year. Temp bottomed out at -14 c this morning. I've been running the unit just to see what it would do at this outdoor temp, and...
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Forum: Geothermal & Heat Pumps
01-27-13, 03:53 PM
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Replies: 77
Views: 51,641
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Forum: Geothermal & Heat Pumps
01-23-13, 04:15 PM
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Replies: 77
Views: 51,641
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Forum: Geothermal & Heat Pumps
01-22-13, 02:25 AM
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Replies: 77
Views: 51,641
Sorry all, no pics this time. My smart phone...
Sorry all, no pics this time. My smart phone decided to lose its power button and won't power on now at all. The repair was pretty straightforward. Upon inspection, the discharge line had stress...
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Forum: Geothermal & Heat Pumps
01-12-13, 09:01 PM
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Replies: 77
Views: 51,641
Murphy's Law strikes again
My unit let its charge out again Wednesday after doing an awesome job for almost 2 months straight. Same cause: vibration stress cracked the u-turn coming out of the compressor discharge line. I...
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Forum: Geothermal & Heat Pumps
12-02-12, 09:27 PM
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Replies: 77
Views: 51,641
Update:
Right around Thanksgiving, the unit...
Update:
Right around Thanksgiving, the unit developed a leak at the top of the compressor. The stock tubing the manufacturer used was rather thin and seems to have vibrated itself apart. You can...
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Forum: Geothermal & Heat Pumps
11-25-12, 11:12 AM
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Replies: 77
Views: 51,641
Murphy's law strikes again...
The unit has been running faithfully since the last repair until sometime this morning. I moved the defrost thermistor to the other side of the evaporator circuit, near the TXV, to ensure the coil...
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Forum: Geothermal & Heat Pumps
11-18-12, 08:21 PM
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Replies: 77
Views: 51,641
AC,
I think I'm beginning to get the bug...
AC,
I think I'm beginning to get the bug you speak of... I'm getting ideas on how to improve upon this creation already. As it is, I can live with it until after Thanksgiving. It puts out lots of...
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Forum: Geothermal & Heat Pumps
11-15-12, 04:42 AM
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Replies: 77
Views: 51,641
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