New to RE - Hello from Canada

[Barrel Man]

:off topic:

Hello all

Can I refit a blast freezer evaporator unit to work as hot water heating?

[nike123]

:off topic:

Hello all

Can I refit a blast freezer evaporator unit to work as hot water heating?

No, you can't. For that purpose you could use only some medium temperature or high temperature refrigeration equipment. Blast freezer have too low COP and it is not economical for that purpose. For same expense you could heat with ordinary electrical heater. Also, relatively "high" outdoor air temperature for prolonged period will kill compressor.

[Brian_UK]

Are you wanting to use an old evaporator coil from a redundant blast freezer as a heater?

If so then you probably could but I would suggest a fan with less duty.

I hope this has nothing to do with what you manufacture.

[Barrel Man]

Hello Brian and Nike

Took me awhile to find where someone replied to my post

I am in woodworking - manufacture cedar hot tubs and barrel saunas

We are currently heating with wood heat and burning our wood waste / sawdust for hot water heat.

Purchasing a new location that used to me a food processing factory since 1984 and there are 3 large units in excellent condition that were left behind. They look like the heat units in front of my fans for my existing hot water heating

This new building is 33,000 sq feet and they removed the propane boiler. I was wondering if the units could have hot water run through them instead of the ***** (i think) that used to run through them.

Thanks for your time - it they were made of wood I could look after this, however, I am completly out of my element here so any reply would be appreciated

[Barrel Man]

I have a link to view an image of this unit. Can anyone advise me on this?

[nike123]

I have a link to view an image of this unit. Can anyone advise me on this?

Go to some photo server, upload image there and then post link to that photo here.
One is Yahoo flicker (http://www.flickr.com/). Other one is Google Photobucket (http://photobucket.com/). You need to register to upload photos.

You dont have 15 posts so you cannot post links directly, but you could post link like this:
w w w.flickr. com/photos/22689079@N07/3187532308/sizes/l/
Check that I added some spaces to link in order that page software don't recognize this as link.

[Barrel Man]

I uploaded the image to my server and tried to post it here, however until I have a certain number of posts it would appear that I cannot post the URL

Are you allowed to switch to email? info@barrelenterprises.com

[nike123]

Hello Brian and Nike

Took me awhile to find where someone replied to my post

I am in woodworking - manufacture cedar hot tubs and barrel saunas

We are currently heating with wood heat and burning our wood waste / sawdust for hot water heat.

Purchasing a new location that used to me a food processing factory since 1984 and there are 3 large units in excellent condition that were left behind. They look like the heat units in front of my fans for my existing hot water heating

This new building is 33,000 sq feet and they removed the propane boiler. I was wondering if the units could have hot water run through them instead of the ***** (i think) that used to run through them.

Thanks for your time - it they were made of wood I could look after this, however, I am completly out of my element here so any reply would be appreciated

You could use evaporator as heat exchanger with some modifications. On evaporator collector side you need to install air vent valve to be able to drain air from coil. Also, on distributor side you probably need to remove refrigerant distributor rose and shorten some distributor pipes because they have significant pressure drop, but I never done that conversion, so maybe others have some practical advise regarding distributor side.
Also, you will have huge draft from original fans, so you are going to need some fan speed control.

[nike123]

I uploaded the image to my server and tried to post it here, however until I have a certain number of posts it would appear that I cannot post the URL

Are you allowed to switch to email?

Check again my previous post!
Also, remove e-mail, that is for your protection against spam!
If anyone need your mail you could send it by visitor message or any member here could find it in your V-card if he need it.

[Barrel Man]

Thank you for looking after someone new to this format

There are certainly a lot of talented people in this forum

Just back from the building once again and it is minus 20 here today. Looks like I have a much bigger problem now as the plumbing has not been drained and the pipes are starting to split and open.

Nothing is easy is it?

[Barrel Man]

I am starting to catch on - feel pretty silly not knowing as much as everyone else here

I have entered the address to view the fan

Can anyone take a look and let me know if I can run hot water through this unit for heating purposes?

barrel enterprises dot com forward slash fan dot h t m l

[nike123]

Can anyone take a look and let me know if I can run hot water through this unit for heating purposes?

barrel enterprises dot com forward slash fan dot h t m l

http://barrelenterprises.com/fan.html

Yes you could, as I explained in my previous post!;)

[Barrel Man]

Many thanks for the assistance gang..

So what I have so far is .........

You could use evaporator as heat exchanger with some modifications. On evaporator collector side you need to install air vent valve to be able to drain air from coil. Also, on distributor side you probably need to remove refrigerant distributor rose and shorten some distributor pipes because they have significant pressure drop.

I will try to find out more about this

It was mentioned earlier that I may have to lower the fan speed - good thinking by the way.

What if I used this air tight room as a kind of furnace room, cut holes in both side walls and installed ducts (paying careful attention to making them air tight). When I close the only door to the room, no matter how terrific the fan velocity is the hot air should move into the ductwork offering heat to the outside areas.

This is just a theory and why I am on your forum - if you need assistance with "wood related" projects, feel free to call upon myself.

In the mean time, I sure appreciate the people that have taken the time to reply so far

[Brian_UK]

You could install ducts as you suggest but remember to let the air in somehow ;)

[Barrel Man]

Thanks Brian - that would be most important - would you suggest air from outside the building (unheated) or air from inside the building being that it is 33,000 sq ft?

Dave

[Brian_UK]

If you can recirculate the inside air then the load will be reduced.

I'm sure that the space is not airtight but you may need to introduce a small amount of 'fresh air' just to keep everyone awake.

[Abby Normal]

if it starts raining inside ventilate