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Improving the fridge |
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jeb
Captain Joined: 05 May 2014 Location: Sweden Status: Offline Points: 226 |
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Posted: 28 November 2018 at 16:08 |
I have planning to improve the fridge on my Hanse
400 for several years and after the extremely hot Swedish summer I finally
started. My plan was to add extra insulation and
buying a water-cooled Isotherm unit. I’m now in the mid of the project. I made
openings in the cupboard aft of the fridge as well as from the saloon side. I’m
now able to access 3 sides and are adding 40-50mm of blue Styrofoam. With the fridge exposed I was also able to
detect voids in the original insulation, about 20 mm from the joint and down
was not filled so I fixed that with expanding foam. I was also able to glue 50
mm of insulation below the fridge. If needed I will add 20 mm of insulation on
the inside the fridges left side where there is no access from the outside. When ready,
there will be 4 major improvements. ·
Fixed
the original insulation ·
Adding
40-50mm insulation giving a total of 100-110mm ·
Removing
the heat source (compressor) behind/below the bottle area · Water cooling Big hole in the locker between stowe and fridge, insulation behind teh fridge visible.
Insulation test fitted, will be trimmed to 45mm and covered with white pvc. All scratches will be hided by the pvc and the shelfs/drawers.
Edited by jeb - 28 November 2018 at 16:13 |
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Jesper
Hanse 400e |
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toholthe
Commander Joined: 20 September 2017 Location: Norway Status: Offline Points: 124 |
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I am adding a small fan in the fridge to get better air flow inside. In my Hanse 400 from 2007 the evaporator is rally cold, but inside the door is not cold at all. Plan is to connect fan to lamp in fridge.
I will use this fan: https://www.ebay.com/itm/DC-12V-50mm-Blower-Cooling-Fan-Hotend-Extruder-Turbine-Fan-for-3D-Printer-UK-LLD/173573926072?hash=item2869cfecb8:g:SkgAAOSwQIFbuBJJ Plan is to mount it in the roof of the fridge over the door blowing towards the evaporator. |
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jeb
Captain Joined: 05 May 2014 Location: Sweden Status: Offline Points: 226 |
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Thanks for the tip, My main concern has been the current consumption due
to the fact that the compressor is running almost constant. I have already installed
the Smart Energy Control from Isotherm and that unit measures the temperature
in the box and not at the evaporator as the original thermostat, so temperature
close to the door is not a problem. But
I will consider adding a fan and try to wire it so it turns off when the box is
opened (to avoid blowing in hot air). |
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Jesper
Hanse 400e |
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Mary400e
Lieutenant Joined: 05 December 2016 Location: Copenhagen Status: Offline Points: 27 |
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Hi Jesper
I have a plan for the winter to do improvement regarding the fridge. A couple years ago did I made a lot of large holes in the wooden plate covering the compressor, and have removed the small cupboard door to improve the ventilation. This have improved a lot, but more is needed. Can you provide more details about the component used. Thanks. BR Jesper B (from DK) Hanse 400e (Tiramisu) from 2007
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Borjebus
Commander Joined: 29 January 2013 Location: Sweden W Status: Offline Points: 111 |
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Hi Jeb,
Where do you plan to locate the compressor when you move it?
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BÄSK, Hanse 370e #82 from 2006, Yanmar 3JH4E/SD50, 3-blade Flexofold, RMC(Lewmar) 185 Bowthruster, Vulcan 9, Simrad+B&G instruments
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jeb
Captain Joined: 05 May 2014 Location: Sweden Status: Offline Points: 226 |
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It's not that sensitive where to locate a water cooled unit. I will use the isotherm sp2351. The evaporator is the same size as the old one. I will mount the compressor under the removable part of the u-sofa in front of the sink. I will add more pictures when I have made more progress.
@jesper B, that's my name as well! I used same strategy as you, removed the wooden cover and kept the door open but that was not sufficient. As insulation I'm using blue EPS. Behind the fridge I had to make 4 pieces and glue them together. Below under the plywood supporting the box I had to use 3 pieces to be able to slide them in. I have removed the removable aft part of the sofa, was only fixed with 4 screws. I was cutting away as much as possible of the plywood without removing the big part of the sofa but I did not get access to the complete front of the fridge so I had to make a puzzle of several pieces that was glued together while slided in. The most complicated part was to gain acces to the front from inside the cupboard. It was actually 2 pieces of plywood with some wooden pieces between, total thickness of about 50 mm (48 to be exact). Before doing the cutting I had to remove the shelfs. All small gaps between EPS parts and other voids have beed filled with foam for outdoor use. Edited by jeb - 29 November 2018 at 21:26 |
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Jesper
Hanse 400e |
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jeb
Captain Joined: 05 May 2014 Location: Sweden Status: Offline Points: 226 |
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Some updates from my fridge project. All sides except the left side (the one facing the sink cabinet) has now got an additional 50 mm EPS. If needed I might add 20mm + pvc skin on the inside of the uninsulated side. I have installed the SP2351. On picture 1 is the water cooled sp thrue hull. I had to make some space for the pipes in the front wall of the sink cabinet using my router. A semilar cutout was made in the removable part of the sofa.
I changed the plan for the compressor and mounted it in the storage below the sofa (removable part still not mounted) The bulkheads and front part of U-sofa refitted. The inside wall of the cupboard with 3 mm pvc glued to the insulation. I will make a cover in the corner as well. I added some wooden pieces behind the pvc where all fittings are. Last picture is from where the compressor use to be. Now with proper insulation and no heat source. Still some cleaning left. The remaining task is to finalize my arduino based controller, but I will return to that in a later post. As a teaser I Will meassure and control both freezer compartment and the fridge itself. The unit will also talk to my battery monitor to determine when to run cool down, or turn off. Rpm of the compressor will be controlled as well as an internal fan and if needed an extra fan in the compressor compartment. Over and out! /Jesper
Edited by jeb - 19 February 2019 at 18:09 |
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Jesper
Hanse 400e |
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toholthe
Commander Joined: 20 September 2017 Location: Norway Status: Offline Points: 124 |
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Great work Jesper. I am finished adding fan inside fridge. Mounted above the door in the roof with a relay that will keep the fan on when lid is closed. Hopefully this will give more even temp in fridge. With new LiFePo batteries I am hoping to skip further action and just accept that fridge uses some more power than Jespers fridge.
Edited by toholthe - 19 February 2019 at 22:52 |
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Richard M
Captain Joined: 06 November 2006 Location: United Kingdom Status: Offline Points: 329 |
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Hi toholthe
Can you say what LiFePo batteries you fitted (manufacturer/size etc)? Many thanks Richard
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Richard M
(S/Y BrightStar - H 455 #90; ex S/Y Providence - H 400e #290) |
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toholthe
Commander Joined: 20 September 2017 Location: Norway Status: Offline Points: 124 |
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Hi,
I have connected the winch to the start battery an replaced the old winch and housebatt with 2 x 100ah LiFePo4 batteries from makspower.no. This gives me the same running time as 400ah AGM batteries. Works well and charges very quick to 100%, but expendive to buy. Should last a long time so total cost might be Ok. |
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