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Search took 0.02 seconds. Search: Posts Made By: takyka
Forum: Geothermal & Heat Pumps 12-30-14, 03:16 AM
Replies: 331
Views: 166,189
Posted By takyka
flow sensor

I'm using a flow sensor for one year now in my heatpump. It was running end of last winter, for one month during summer (for cooling). Was stopped for monthes. It was running from mid October,...
Forum: Geothermal & Heat Pumps 11-21-14, 01:50 AM
Replies: 331
Views: 166,189
Posted By takyka
The arduino mega is a 5V device! As long as one...

The arduino mega is a 5V device! As long as one doesn't need computation power of 32bit systems, but for more pins or memory does, arduino mega can be a good choice.

Unlike some are thinking...
Forum: Geothermal & Heat Pumps 11-20-14, 01:44 AM
Replies: 331
Views: 166,189
Posted By takyka
floats and 1w temp sensors

In my hetpump controller sw I use long and float operations alot. In such application the speed of the uC is plenty to waste for emulated floating point operations. Even there are several frequent...
Forum: Geothermal & Heat Pumps 11-01-14, 04:09 AM
Replies: 82
Views: 70,844
Posted By takyka
In general it's possible to use VFD to drive...

In general it's possible to use VFD to drive permanent magnet brushless motor. However it is not ideal and not designed for. You should be very careful with settings. I sucesfully run a BLDC fan...
Forum: Geothermal & Heat Pumps 10-30-14, 03:15 AM
Replies: 13
Views: 10,934
Posted By takyka
Hi, Frosting is a big issue with ASHP....

Hi,

Frosting is a big issue with ASHP. Unfortunately dehumidifiers are not a good candidates for conversion if one keeps the original evaporators.
In oposition to an ASHP, in a dehumidifier is...
Forum: Geothermal & Heat Pumps 09-10-14, 12:36 AM
Replies: 331
Views: 166,189
Posted By takyka
cheap flow sensor

I have two of the mentioned cheap flow sensors installed. One is in operation (mean heavy waterflow) a lot of times a day. The other one stands for half year (in my heatpump) and in operation gets...
Forum: Geothermal & Heat Pumps 07-31-14, 02:19 PM
Replies: 82
Views: 70,844
Posted By takyka
Exclamation You should connect your blue gauge to the...

You should connect your blue gauge to the compressor suction line (where you indicated 25° on your drawing). For superheat calculation you need the pressure from there. The pressure at the current...
Forum: Geothermal & Heat Pumps 07-28-14, 04:29 AM
Replies: 331
Views: 166,189
Posted By takyka
buffalobillpatrick, Nice, simple code. If...

buffalobillpatrick,

Nice, simple code. If you don't mind, I would share with you my complains strictly from remidial intent.

- As you handle strings, you will exhaust RAM very fast. All strings...
Forum: Geothermal & Heat Pumps 07-23-14, 01:54 AM
Replies: 8
Views: 5,532
Posted By takyka
Hi, The use of 3phase AC motors is a small...

Hi,

The use of 3phase AC motors is a small step towards higher efficiency.
One problem, if you run a motor with VFD on 100% it is less efficient than the single phase counterpart. This is due...
Forum: Geothermal & Heat Pumps 07-08-14, 03:52 PM
Replies: 331
Views: 166,189
Posted By takyka
my custom HP controller

Dear All,

This is my first post here. I follow the heatpump section of EcoRenovator forum with great interest. I have built an ASHP and I made an arduino based controller to it. Why I turn myself...
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