Heat pump H2O for -20 C

[Renato RR]

I have been in visit of one chiller producer and he claimes that he can produce chiller for -20 C outdor temperature with R 134a,single stage compressor Bitzer.He show me one such chiller and I coud not see enithing spectacular on it only have biger air heat exchanger then one for normal ambient temperature.
Any ideas?

Renato

[Peter_1]

Sure, why should this be not possible and the fact that R134a is used doens't change anything.

But why then not use a drycooler when it's outside -20°C?

You don't need a chiller at all at this conditions.

[NoNickName]

Maybe they are claiming it works as a heat pump at -20°C ambient air temperature, which is clearly a marketing blahblah.

[Josip]

Hello guys,

I have been in visit of one chiller producer and he claimes that he can produce chiller for -20 C outdor temperature with R 134a,single stage compressor Bitzer.He show me one such chiller and I coud not see enithing spectacular on it only have biger air heat exchanger then one for normal ambient temperature.
Any ideas?

Renato

To make money

Sure, why should this be not possible and the fact that R134a is used doens't change anything.

But why then not use a drycooler when it's outside -20°C?

You don't need a chiller at all at this conditions.

Agree But good marketing is to sell something people do not need at all (like fridge to Eskimos)

Maybe they are claiming it works as a heat pump at -20°C ambient air temperature, which is clearly a marketing blahblah.

It works but at what efficiency? There are much better solutions but....

[NoNickName]

Yeah, it works. Oops.... I forgot the low pressure switch bridged out.