different between R134 refreigerant and Ammonia,NH3

[ArERaIN]

hye everyone, whats the different between this two refrigerent.....

[Toosh]

hye everyone, whats the different between this two refrigerent.....

Don`t sniff the ammonia

DNG R HPhysical properties

The ideal refrigerant has good thermodynamic properties, is unreactive chemically, and safe. The desired thermodynamic properties are a boiling point somewhat below the target temperature, a high heat of vaporization, a moderate density in liquid form, a relatively high density in gaseous form, and a high critical temperature. Since boiling point and gas density are affected by pressure, refrigerants may be made more suitable for a particular application by choice of operating pressure. These properties are ideally met by the chlorofluorocarbons.
Corrosion properties are a matter of materials compatibility with the mechanical components: compressor, piping, evaporator, and condenser. Safety considerations include toxicity and flammability.EW

[TXiceman]

Looks like another student looking for someone to do their homework assignment.

Just Google the two refrigerant ...totally different properties, MW, density, vapor pressure, chemical formulas.


ken

[josei]

hye everyone, whats the different between this two refrigerent.....

I´ll give you one:

R134 almost Newest Refrig.
NH3=R717 almost Oldest Refrig.

[ArERaIN]

I just wanted to know from the others..I already google it...U all here have many experience right..

[Brian_UK]

OK, what sort of differences are you looking for.

It is a bit like asking what is the difference between 30W oil and 40W oil.

If you have Googled the refrigerants already then you should know the differences between them.

[Josip]

Hi, ArERaIN

hye everyone, whats the different between this two refrigerent.....

What is your point?

Best regards, Josip

[josei]

Ammonia is an efficient refrigerant used in food processing and preservation, as well as many other refrigeration and airconditioning processes.
Ammonia has desirable characteristics as a refrigerant, which have been well known for over a century.

ASHRAE considers that the continued use of ammonia is necessary for food preservation and air conditioning. http://j.mp/ASHRAE_Position_on_Ammonia_as_Refrigerant



The recent discovery that R-134a contributes to global warming has caused the European Union to ban its use on new cars starting from year 2011. Other countries are expected to follow suit.

[ref717]

Do your research man. There are a lot of search engines in the Net and you would get tons of information.

[El Padre]

Get a PH chart for both and you will see the individual characteristics of each refrigerant, why not compare oil miscilibility between the two, e.g.liquid R717 is lighter than the oil used with it, so in a flooded evaporater all the oil will sink to the bottom instead of floating on the top etc.

Cheers