scroll vs rotary

[MikeHolm]

I saw an advert for Panasonic rotary comps and I was wondering if anyone had any experience with a rotary in a heat pump?

[stufus]

Mitsubishi have been using various forms of rotary in small heatpump splits for years and also co2 variations .Here's a link to some info on single and two stage incarnations.
http://docs.lib.purdue.edu/cgi/viewcontent.cgi?article=2831&context=icec&sei-redir=1&referer=http%3A%2F%2Fwww.google.ie%2Furl%3Fsa%3Dt%26rct%3Dj%26q%3Dmitsubishi%2520electric%25 20rotary%2520compressor%2520pump%26source%3Dweb%26cd%3D9%26ved%3D0CIMBEBYwCA%26url%3Dhttp%253A%252F% 252Fdocs.lib.purdue.edu%252Fcgi%252Fviewcontent.cgi%253Farticle%253D2831%2526context%253Dicec%26ei%3 DiuKjTu1Gg8KEB4WpsOME%26usg%3DAFQjCNE0c191eaMYJxPc9YjKrIFchlqJ2g#search=%22mitsubishi%20electric%20r otary%20compressor%20pump%22
Cheers
Stu

[MikeHolm]

Thanks Stu, looks like the biggest they make is 3kw input then they want multiple comps. They talk mostly about using them with CO2 and I am more interested in 410A (at least for now).

[MikeHolm]

Anyone have info about the longevity of the rotary vs scroll in the same application, ie heat pumps? I know someone who won't use the rotaries for that reason. It SEEMS to me that the units that last have scrolls but that is just an impression.