Barmaley
01-07-2012, 05:09 PM
Hi everyone,
I am so glad that I found this forum - I hope to learn a lot here!
I live in PA, USA and I have about 4500 SF house which I heat and cool with electric baseboard and window air conditioners. I am an electrical engineer and my company upgrades commercial and industrial lighting to make it energy efficient. I am tired of paying high electric bills and decided to upgrade my in-house HVAC system to the most modern state. I made some research on the web and became completely confused on the way to go. So I need your advice.
My first intention was to go with standing column geothermal system as it seems to be the most efficient option. However I have found that there is Europe they use heap pumps based on copeland compressors with EVI technology. Those are capable to achieve COP of over 4 for low temperatures as of - 15C. Then I have found a Chinese company claiming a geothermal unit EVI achieving COP 7 if you can believe them.
Another problem was to find a unit designed for USA market: for some reason all AVI based heat pumps are made for Europe. The problem with is that they are Air to Water, while here we use Air to Air systems to use it for both heating and cooling.
What would you suggest for my application? Air heat pump of geothermal? What brand? Can I safely buy directly from Chinese companies? Thank you in advance!
Barmaley
I am so glad that I found this forum - I hope to learn a lot here!
I live in PA, USA and I have about 4500 SF house which I heat and cool with electric baseboard and window air conditioners. I am an electrical engineer and my company upgrades commercial and industrial lighting to make it energy efficient. I am tired of paying high electric bills and decided to upgrade my in-house HVAC system to the most modern state. I made some research on the web and became completely confused on the way to go. So I need your advice.
My first intention was to go with standing column geothermal system as it seems to be the most efficient option. However I have found that there is Europe they use heap pumps based on copeland compressors with EVI technology. Those are capable to achieve COP of over 4 for low temperatures as of - 15C. Then I have found a Chinese company claiming a geothermal unit EVI achieving COP 7 if you can believe them.
Another problem was to find a unit designed for USA market: for some reason all AVI based heat pumps are made for Europe. The problem with is that they are Air to Water, while here we use Air to Air systems to use it for both heating and cooling.
What would you suggest for my application? Air heat pump of geothermal? What brand? Can I safely buy directly from Chinese companies? Thank you in advance!
Barmaley