Go Back   EcoModder Forum > AltModding > Saving@Home
Register Now
 Register Now
 


Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 09-07-2021, 07:24 AM   #1 (permalink)
Mechanical engineer
 
Vekke's Avatar
 
Join Date: Jan 2009
Location: Kitee (Finland)
Posts: 1,244

Siitin - '98 Seat Cordoba Vario
90 day: 58.56 mpg (US)

VW Lupo 3L --> 2L - '00 VolksWagen Lupo 3L
Diesel
90 day: 104.94 mpg (US)

A8 luxury fuel sipper - '97 Audi A8 1.2 TDI 6 speed manual
90 day: 64.64 mpg (US)

Audi A4B6 Avant Niistäjä - '02 Audi A4b6 1.9tdi 96kW 3L
90 day: 54.57 mpg (US)

Tourekki - '04 VW Touareg 2.5TDI R5 6 speed manual
90 day: 32.98 mpg (US)

A2 1.4TDI - '03 Audi A2 1.4 TDI
90 day: 45.68 mpg (US)

A2 1.4 LPG - '02 Audi A2 1.4 (75hp)
90 day: 24.67 mpg (US)
Thanks: 259
Thanked 803 Times in 391 Posts
Air to air heat pump modifications

I have bougth 2 heat pumps this year and will propably buy the 3rd later this year. As some of you know I live in finland where its really cold in winter. I still did not want to spent big bucks to nordic climate heat pumps. I bougth best I could afford ones Panasonic KIT CS-FZ35WKE. It worked well on temps when it was maximum of -10 celsius but it started to freeze the outer unit slowly but steadily. I knew that it will happen and I have to install a heating cable to the outer unit, Which I did a 35w 2 meter long cable.



That boosted little bit the performance and it now worked well to around -15 celsius, but if it get colder than that inside temps started to drop. Well my house is pretty big which is one reason. I measured outer unit temperatures and noticed that the stock insulation in the pipes and connectors were not good. I added more insulation materials on the outer unit walls in made double insulation to coolant pipes.




After those mods the impact to heating was big. Not inner unit max temps get +10 celsius hotter and its able to keep inside temps on +20 celsius to aroung -20 celsius. Pump did not newer shut down even at -35celsius but it did not make any heat either at those temps so more work is ahead.

__________________


https://www.linkedin.com/in/vesatiainen/

Vesa Tiainen innovation engineer and automotive enthusiast
  Reply With Quote
The Following 3 Users Say Thank You to Vekke For This Useful Post:
Gasoline Fumes (09-08-2021), redneck (09-07-2021), samwichse (09-10-2021)
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 09-07-2021, 04:08 PM   #2 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,562
Thanks: 7,738
Thanked 8,554 Times in 7,041 Posts
It's hard to tell from the close-up pix, is that a cover in the upper left?

A proper wind shield could reduce the wind chill effect.
__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________
  Reply With Quote
Old 09-07-2021, 08:31 PM   #3 (permalink)
It's all about Diesel
 
cRiPpLe_rOoStEr's Avatar
 
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
Posts: 12,548
Thanks: 0
Thanked 1,622 Times in 1,447 Posts
Quote:
Originally Posted by freebeard View Post
A proper wind shield could reduce the wind chill effect.
A removable one does the trick for the Citroën 2CV and the Aero Boero AB-115, decreasing the cold air flow around their oil coolers during winter.
  Reply With Quote
Old 09-08-2021, 12:44 AM   #4 (permalink)
High Altitude Hybrid
 
Join Date: Dec 2020
Location: Gunnison, CO
Posts: 1,954

Avalon - '13 Toyota Avalon HV
90 day: 40.45 mpg (US)

Prius - '06 Toyota Prius
Thanks: 1,035
Thanked 538 Times in 432 Posts
Just to be clear, you'd want all the air you can get to the evaporator. Low pressure lines can also be let out in the open (when used for heating only) since they will always be colder than ambient temperature, with or without wind chill. The only problem is you'll get ice build up on them if you do. But yes, the more you cover up the high pressure lines the better.
__________________
  Reply With Quote
Old 09-08-2021, 04:45 AM   #5 (permalink)
Mechanical engineer
 
Vekke's Avatar
 
Join Date: Jan 2009
Location: Kitee (Finland)
Posts: 1,244

Siitin - '98 Seat Cordoba Vario
90 day: 58.56 mpg (US)

VW Lupo 3L --> 2L - '00 VolksWagen Lupo 3L
Diesel
90 day: 104.94 mpg (US)

A8 luxury fuel sipper - '97 Audi A8 1.2 TDI 6 speed manual
90 day: 64.64 mpg (US)

Audi A4B6 Avant Niistäjä - '02 Audi A4b6 1.9tdi 96kW 3L
90 day: 54.57 mpg (US)

Tourekki - '04 VW Touareg 2.5TDI R5 6 speed manual
90 day: 32.98 mpg (US)

A2 1.4TDI - '03 Audi A2 1.4 TDI
90 day: 45.68 mpg (US)

A2 1.4 LPG - '02 Audi A2 1.4 (75hp)
90 day: 24.67 mpg (US)
Thanks: 259
Thanked 803 Times in 391 Posts
There is a external roof/shelter which have big a hole where it can blow the air out freely. It protects the unit for snow that falls down from the house roof.
__________________


https://www.linkedin.com/in/vesatiainen/

Vesa Tiainen innovation engineer and automotive enthusiast
  Reply With Quote
Old 09-08-2021, 05:21 PM   #6 (permalink)
It's all about Diesel
 
cRiPpLe_rOoStEr's Avatar
 
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
Posts: 12,548
Thanks: 0
Thanked 1,622 Times in 1,447 Posts
Quote:
Originally Posted by Isaac Zachary View Post
The only problem is you'll get ice build up on them if you do.
Even though heat pumps seem to not be so much of rocket-science, I guess it would be a PITA having to work around some de-icing
  Reply With Quote
Old 09-10-2021, 11:19 AM   #7 (permalink)
EcoModding Lurker
 
Join Date: Aug 2021
Location: Turku, Finland
Posts: 31

Grand Espace travel ship - '01 Renault Grand Espace
90 day: 26.56 mpg (US)

107 city slider - '10 Peugeot 107
90 day: 49.55 mpg (US)
Thanks: 10
Thanked 1 Time in 1 Post
One could improve performance in very cold weather with car radiator behind pump circulating liquid from underground pipes.

Another is lead all exhaust air from house inside to rear side of pump.
__________________
| 107 | Espace 3 |
  Reply With Quote
Old 09-10-2021, 12:54 PM   #8 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,562
Thanks: 7,738
Thanked 8,554 Times in 7,041 Posts
OEM car parts are economical, but the buried pipes, not so much. The problem isn't the unit as a whole, just the heat exchanger/condenser. Ice blocks the air flow.
__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________
  Reply With Quote
Old 09-10-2021, 05:34 PM   #9 (permalink)
It's all about Diesel
 
cRiPpLe_rOoStEr's Avatar
 
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
Posts: 12,548
Thanks: 0
Thanked 1,622 Times in 1,447 Posts
Quote:
Originally Posted by freebeard View Post
OEM car parts are economical, but the buried pipes, not so much.
Repairing buried pipes is often a PITA too.
  Reply With Quote
Old 09-10-2021, 07:13 PM   #10 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,562
Thanks: 7,738
Thanked 8,554 Times in 7,041 Posts
....when they are laid out like a septic field just below the surface.

A bore hole has a vertical element that could be winched out if needed.


http://www.brightgreenhomes.co.uk/for-home/heat-pumps/

__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________
  Reply With Quote
Reply  Post New Thread


Tags
efficiency, heatpump, improvement, modification

Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com