# Is refrigerant measured by weight or volume?

May 7, 2020

## Is refrigerant measured by weight or volume?

Its simple……. its not about volume, its about weight. depending on temp, one pound may be a gallon, or a gallon and a half. If you understand how refrigerant works, it makes sense.

## Can I mix R12 and 134a?

R134a systems operate at higher discharge-side pressures than R12, which can cause compressor seals to leak. Bottom line, R134a simply doesn’t cool as well as R12. The advantage of ester oil is that it works with both R12 as well as R134a, so you can fill the system with it and then use either refrigerant.

How do you calculate volume of refrigerant?

Divide the quantity of refrigerant that the heat pump moves by the time it takes to move it. If it pumps 3.6 kilograms of refrigerant in 10 seconds: 3.6 / 10 = 0.36 kilograms per second. Divide the answer to step 1 by the answer to step 2: 51.2 / 0.36 = 142.2 kilojoules per kilogram.

Can you put r134 in a R12 system?

To be able to use R134a in an R12 system, the R12 system needs to undergo a retrofitting so that it’s able to handle and process R134a refrigerant. This also means that some refrigerant conversion needs to be done in order to drop R134a into a R12 system.

### What happens if I put 134a in R12?

Refrigerant Can Leak Easier R134a systems work at higher discharge-side pressures than R12 systems, which could lead to compressor seals leaks. Additionally, since R134a is composed of much smaller molecules, it has a greater chance of leaking from an R12 system.

### Is there a way to convert R12 to R134a?

The second way to retrofit R12 to R134a is the modification of existing parts. Only a few changes need to make in the system, such as pressure ports, receiver drier, and pressure switches compatible with R-134a. Now below are some practical steps to convert R-12 to R-134a system. 7 Quick Steps to Convert R12 To R134a

How much does R-134a weigh per cubic inch?

About Refrigerant R-134a, liquid. Refrigerant R-134a, liquid weigh (s) 1.21 gram per (cubic centimeter) or 0.7 ounce per (cubic inch) at 24.44 °C or 76 °F.

What’s the difference between R12 and R134a refrigerant?

Retrofitting a unit from R12 to R134a refrigerant requires you to adjust the charge accordingly. The volume of r134a refrigerant is lighter than the same amount r12 refrigerant. This not only is important to know for commercial refrigeration units, but it also is vital when making repairs on HVAC equipment and even cars.

#### Which is better for retrofit R12 or R134A?

You can use the R134a retrofit capacity chart for this purpose. Generally, the new amount is 75-85% of the quantity advised by the manufacturer. R134a has a lower tolerance for mischarging, so you will face worse performance even if you overcharge as compared to the R12.