Freezer to Refrigerator Conversion: Difference between revisions

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[[/Manufacturing Instructions]]
[[/Manufacturing Instructions]]
=Video=
Video mentions the refrigerator conversion - video from [[Open Source PV System]]
<html><iframe width="560" height="315" src="https://www.youtube.com/embed/aKQZQICFaTU" frameborder="0" gesture="media" allow="encrypted-media" allowfullscreen></iframe></html>


=Introduction=
=Introduction=
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http://mtbest.net/chest_fridge.html
http://mtbest.net/chest_fridge.html


In money terms, the Superfridge costs 2 cents per day to run (assuming 10 vent per kWh electricity cost). This is about $7 per year - compared to $88 for an average fridge.
In money terms, the Superfridge costs 2 cents per day to run (assuming 10 cent per kWh electricity cost). This is about $7 per year - compared to $88 for an average fridge.


For the [[Seed Eco-Home]], the cost is actually even better. The off-grid energy system cost $3000 for 3kW not including labor. This translates to 2 cents per kWh energy cost over a 20 year life of the PV system. That is about $1.50 electricity cost to run the refrigerator for a whole year!
For the [[Seed Eco-Home]], the cost is actually even better. The off-grid energy system cost $3000 for 3kW not including labor. This translates to 2 cents per kWh energy cost over a 20 year life of the PV system. That is about $1.50 electricity cost to run the refrigerator for a whole year!
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=BOM=
=BOM=


A '''Bill of Materials''' lists all parts required to build a machine.
{{Hint|Transition to Arduino Nano, which is less expensive and appears not to get compilation errors like the Sparkfun Pro Micro}}
 
''Bill of Materials''' lists all parts required to build a machine.


==amazon==
==amazon==
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=Arduino Code=
=Arduino Code=
{{Hint|Sparkfun Pro Micro controller appears to require Arduino IDE v1.0.1}}
{{Hint|Sparkfun Pro Micro controller appears to require Arduino IDE v1.0.1. Not. See installation notes at https://learn.sparkfun.com/tutorials/pro-micro--fio-v3-hookup-guide/installing-mac--linux }}


{{Hint|The trigger values below did not work. See [[Talk:Freezer to Refrigerator Conversion]]. Try 300 and 310}}
Code history - [[File:fridge_code.ini]]


  <nowiki>
  <nowiki>
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*See [[Talk:Freezer to Refrigerator Conversion]] for explination of trigger values.
*See [[Talk:Freezer to Refrigerator Conversion]] for explination of trigger values.
=Refrigerator + Compressor=
*[[File:fridgecompressor.jpg|500px]]
*7.4 LRA on the label. See definition of [[LRA]]
*Info about the panasonic compressor: [https://na.industrial.panasonic.com/products/hvacr-appliance-devices/refrigeration-compressors/refrigeration-compressors/series/d-series/CS509/model/DJK51C73RAU], PDF -[https://na.industrial.panasonic.com/sites/default/pidsa/files/d_series_datasheets_merged.pdf]
*Replacement part on ebay: [https://www.ebay.com/p/Genuine-OEM-Panasonic-DJK51C73RAU-Refrigerator-Compressor/19014150677?iid=264169865315&chn=ps]
*This is the fridge we got (it cost $450): [https://www.menards.com/main/appliances/freezers-ice-makers/frigidaire-reg-15-6-cu-ft-chest-freezer/p-1444429870813-c-7214.htm?tid=1653379493841049397]
*This is the closest (in terms of size and price) currently available: [https://www.menards.com/main/appliances/freezers-ice-makers/appliances/freezers-ice-makers/criterion-reg-15-9-cu-ft-commercial-chest-freezer/ccf16w/p-1487704602021-c-7214.htm?tid=-2405546127223175268&ipos=3]
*Best Buy has a 10 cu ft for $270 and 14 cu ft for $370: [https://www.bestbuy.com/site/insignia-10-2-cu-ft-chest-freezer-white/8389389.p?skuId=8389389]
*Sam's club has 10 cu ft for $240: [https://www.samsclub.com/sams/igloo-10-6cf-freezer-chest-freezer/prod19210362.ip]
*Notes on how a [[Refrigerator Compressor]] works


=Other Options=
=Other Options=

Latest revision as of 18:15, 15 July 2022


HintLightbulb.png Hint: Good job Dorkmo

/Manufacturing Instructions


Video

Video mentions the refrigerator conversion - video from Open Source PV System

Introduction

Convert a freezer to a refrigerator, and reduce energy consumption 12x so that your refrigerator uses 8 Watts of average power.

This translates to about 50 million megawatt hours of electricity (126M households with 1 fridge) saved per year in the USA if everyone converted to an energy saving fridge from a 1kWhr/day scenario today. This is about $5 billion dollars saved per year in America.

Nearly every household on Earth has a verticaldoor fridge that uses 100W of power on average - or about 2.4 kWh per day. In a country of a few million households, replacing vertical door refrigerators with chestfridges can save enough energy to allow closing down at least one large power station. Alternatively, construction of a new power station to meet the increasing energy demand could be avoided or delayed. http://mtbest.net/chest_fridge.html

In money terms, the Superfridge costs 2 cents per day to run (assuming 10 cent per kWh electricity cost). This is about $7 per year - compared to $88 for an average fridge.

For the Seed Eco-Home, the cost is actually even better. The off-grid energy system cost $3000 for 3kW not including labor. This translates to 2 cents per kWh energy cost over a 20 year life of the PV system. That is about $1.50 electricity cost to run the refrigerator for a whole year!

Original Work

This work is based on the Mt_Best_Freezer_to_Refrigerator_Conversion.

edit

Wiring Diagram

OSE Fridge Conversion Wiring.png

google doc

Wiring Harness

OSE - Fridge Conversion v0318 - Wiring Harness.png

google doc

BOM

HintLightbulb.png Hint: Transition to Arduino Nano, which is less expensive and appears not to get compilation errors like the Sparkfun Pro Micro

Bill of Materials' lists all parts required to build a machine.

amazon

sparkfun

Luxury Edition

Tools

  • step drill bit amazon
    • drill
  • butt connector crimper amazon
  • small blade screw driver
  • phillips head screw driver
  • soldering iron - for adding headers amazon
  • electrical tape ace

Arduino Code

HintLightbulb.png Hint: Sparkfun Pro Micro controller appears to require Arduino IDE v1.0.1. Not. See installation notes at https://learn.sparkfun.com/tutorials/pro-micro--fio-v3-hookup-guide/installing-mac--linux


HintLightbulb.png Hint: The trigger values below did not work. See Talk:Freezer to Refrigerator Conversion. Try 300 and 310

Code history - File:Fridge code.ini 

//A1 read voltage
//D3 sensor power
//D14 relay (-)


  volatile int sensorvalue = 328; //define the variable
  int triggeron = 328;         //number that will trigger fridge on
  int triggeroff = 304;        //number that will trigger fridge off


// the setup function only runs once every time the chip is reset
void setup() {
  digitalWrite(3, HIGH); //for powering thermister  
  digitalWrite(14, HIGH);  //for switching relay
  pinMode(3, OUTPUT);    //begin operating pin
  pinMode(14, OUTPUT);    //begin operating pin
  delay(20000);          // wait for thermister to get a good initial reading
}

// the loop function runs over and over again forever
void loop() {
  sensorvalue = analogRead(A1);   //read sensor
if (sensorvalue > triggeron){     //if sensor reads over triggeron, turn on
  digitalWrite(14, LOW);       //turn on relay
  delay(8000);                 //wait 8 seconds
}
if (triggeroff > sensorvalue){   //if sensor reads below triggeroff, turn off
  digitalWrite(14, HIGH);         //turn off relay
  delay(8000);                  //wait 8 seconds
}
}

Refrigerator + Compressor

  • Fridgecompressor.jpg
  • 7.4 LRA on the label. See definition of LRA
  • Info about the panasonic compressor: [1], PDF -[2]
  • Replacement part on ebay: [3]
  • This is the fridge we got (it cost $450): [4]
  • This is the closest (in terms of size and price) currently available: [5]
  • Best Buy has a 10 cu ft for $270 and 14 cu ft for $370: [6]
  • Sam's club has 10 cu ft for $240: [7]
  • Notes on how a Refrigerator Compressor works

Other Options

Further Reading

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