Forum: Geothermal & Heat Pumps
01-25-15, 03:23 PM
|
|
Replies: 331
Views: 167,719
|
|
Forum: Geothermal & Heat Pumps
01-05-15, 10:51 AM
|
|
Replies: 331
Views: 167,719
|
|
Forum: Geothermal & Heat Pumps
12-30-14, 10:52 AM
|
|
Replies: 331
Views: 167,719
|
|
Forum: Geothermal & Heat Pumps
12-29-14, 07:10 PM
|
|
Replies: 331
Views: 167,719
The 6 refrigerant sensors mostly are for my...
The 6 refrigerant sensors mostly are for my curiosity, I want to adjust Superheat via TXV measured after Lo side IHX to about 30*C and measure Sub-cooling.
I will have standard high & low...
|
|
Forum: Geothermal & Heat Pumps
12-29-14, 11:05 AM
|
|
Replies: 331
Views: 167,719
|
|
Forum: Geothermal & Heat Pumps
12-29-14, 10:01 AM
|
|
Replies: 331
Views: 167,719
No interrupt needed.
I measure 6...
No interrupt needed.
I measure 6 temperatures around the HP refrigerant loop:
1. Compressor Out / Condenser In
2. Condenser Out / IHX Hi Side In
3. IHX Hi Side Out / TXV In
4. TXV Out /...
|
|
Forum: Geothermal & Heat Pumps
12-28-14, 02:11 PM
|
|
Replies: 331
Views: 167,719
|
|
Forum: Geothermal & Heat Pumps
11-19-14, 07:07 PM
|
|
Replies: 331
Views: 167,719
No long long, so sorry!
theoldwizard1, I'm...
No long long, so sorry!
theoldwizard1, I'm glad you are on board & contributing, actual experience is hard to come by!
Floats work fine on Arduino acording to all that I have read.
Time is...
|
|
Forum: Geothermal & Heat Pumps
11-19-14, 05:31 PM
|
|
Replies: 331
Views: 167,719
Hi Jeff,
Arduino compiles double float, but...
Hi Jeff,
Arduino compiles double float, but really don't execute double precision floating point arithemitic operations.
I find thermistors to be very repeatable & accurate.
I can scan 16...
|
|
Forum: Geothermal & Heat Pumps
11-19-14, 11:00 AM
|
|
Replies: 331
Views: 167,719
|
|
Forum: Geothermal & Heat Pumps
10-24-14, 11:37 AM
|
|
Replies: 331
Views: 167,719
|
|
Forum: Geothermal & Heat Pumps
10-24-14, 11:06 AM
|
|
Replies: 331
Views: 167,719
Rewrite of estimate_COP to make it easier to...
Rewrite of estimate_COP to make it easier to understand & relate to Climatemaster graph
I would rather try to closely estimate COP, than to use trouble prone flow sensors.
// COP estimation...
|
|
Forum: Geothermal & Heat Pumps
10-24-14, 10:32 AM
|
|
Replies: 331
Views: 167,719
A/C Thanks, No on physical simulator test...
A/C Thanks, No on physical simulator test fixture.
In example, this compiles but don't work (no delay) even though Z & Y are not sharred outside this ISR
#define Big_number ...
|
|
Forum: Geothermal & Heat Pumps
10-23-14, 10:59 PM
|
|
Replies: 331
Views: 167,719
Hard to figure out when code looks correct &...
Hard to figure out when code looks correct & compiles, but just acts like No-ops.
From Nick Gammon, an Oz Arduino expert:
"The compiler optimizes, that is well-known. Variables shared between an...
|
|
Forum: Geothermal & Heat Pumps
10-23-14, 06:21 PM
|
|
Replies: 331
Views: 167,719
Question:
If a water pump does stop working...
Question:
If a water pump does stop working while HP is running, what is best sequence for shutting down?
Turn off Compressor & pumps together OR Compressor 1st & then delay before turning off...
|
|
Forum: Geothermal & Heat Pumps
10-23-14, 06:10 PM
|
|
Replies: 331
Views: 167,719
|
|
Forum: Geothermal & Heat Pumps
10-23-14, 12:54 PM
|
|
Replies: 331
Views: 167,719
Thanks A/C
30PSI Pressure Transducer or...
Thanks A/C
30PSI Pressure Transducer or Sender for Oil Fuel Diesel Gas Water Air | eBay (http://www.ebay.com/itm/170964682414?_trksid=p2060778.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT)
Having...
|
|
Forum: Geothermal & Heat Pumps
10-22-14, 06:43 PM
|
|
Replies: 331
Views: 167,719
Part #4 functions
// (IRQ1 is on...
Part #4 functions
// (IRQ1 is on Digital Pin 3) Pin 3 going high (+) sets Interrupt 1
// This is Master signal to STOP HP Compressor, by denergizing R3
// with a short power cycle...
|
|
Forum: Geothermal & Heat Pumps
10-22-14, 06:42 PM
|
|
Replies: 331
Views: 167,719
|
|
Forum: Geothermal & Heat Pumps
10-22-14, 06:40 PM
|
|
Replies: 331
Views: 167,719
Part#2 Setup
void setup(void) ...
Part#2 Setup
void setup(void) //Start Setup
{
pinMode (mux_analog_in, INPUT); //MUX DATA INPUT
pinMode (mux_address_A, OUTPUT); // multiplexer address select lines...
|
|
Forum: Geothermal & Heat Pumps
10-22-14, 06:39 PM
|
|
Replies: 331
Views: 167,719
Here is my Latest HP Slave code 2_0
...
Here is my Latest HP Slave code 2_0
Implemented Pressure sensors to verify Pump flows
Implemented economic Balance Point COP: Electricity NG vs 85% Boiler
Implemented Estimated running COP based...
|
|
Forum: Geothermal & Heat Pumps
09-12-14, 07:20 PM
|
|
Replies: 331
Views: 167,719
|
|
Forum: Geothermal & Heat Pumps
09-11-14, 12:10 PM
|
|
Replies: 331
Views: 167,719
|
|
Forum: Geothermal & Heat Pumps
09-11-14, 11:21 AM
|
|
Replies: 331
Views: 167,719
From Tekmar, a leading controls company:
...
From Tekmar, a leading controls company:
energy-savings (http://tekmarcontrols.com/solutions/browsesolutions/energy-savings.html)
Outdoor Reset, is a control strategy that continuously adjusts...
|
|
Forum: Geothermal & Heat Pumps
09-10-14, 10:51 AM
|
|
Replies: 331
Views: 167,719
//OutDoor Reset parameters
#define...
//OutDoor Reset parameters
#define OUTDOOR_hi_control_temp 62.0 //OD Temp. that House don't require heat
#define OUTDOOR_lo_control_temp 0.0 //Minimum expected OD temp, Design Temp
#define...
|
