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Re: He got the Pumping Away right,
You guys just don't understand what the original artist was trying to convey. I think the tree of life on the middle and it's fight to stay safe from dragon on the left and the serpents on the right is really beautiful. The copper branches are trying to protect the circulators from being replaced.
How could you destroy a fine work of art and replace it with something so, well, lineal?
Oh I'm sorry, I just re read the post and realized the customer wanted to heat a house. The "after" picture should do a much better job of that. Never mind.
How could you destroy a fine work of art and replace it with something so, well, lineal?
Oh I'm sorry, I just re read the post and realized the customer wanted to heat a house. The "after" picture should do a much better job of that. Never mind.
Zman
6
82 years old and back in business
I posted about this a while ago and just wanted to update the few that were interested.
My 1933 fridge is finally complete and back in use as of July 4th 2015.
Current cycle times are approximately 6 minutes on 13 minutes off with a cabinet temp of around 31F. Power consumption is 170W for a few seconds dropping down to around 168W which then continues to slow drop until the machine shuts off at around 153W. This is including the 12W crank case heater's consumption. Power factor is around 0.6. The 12W crank case heater is required because the compressor dome is the highside and the refrigerant likes to condense and lay under the oil.
Refrigerant is methyl formate. Oil is around 2 quarts of highly refined "Nujol" mineral oil according to the service manual. The oil floats on top of the refrigerant and is removed from the evaporator via a skimmer.
When running hard such as freezing ice the condenser runs in the high 90s and the top of the compressor around 104F which gives a high side pressure of around 3 PSI. The evaporator runs between 8F and 14F which gives a lowside pressure of between 25" and 26" HG although it has no issue pulling it below 27" HG if it runs long enough.
I had to convert this from a highside float to a capillary tube as the valve seat was badly damaged. I'm told, with a float valve the cycle times are typically slightly better than I'm seeing but I guess it is what it is.
82 years old and still pumping like the day it was made. Isn't it amazing what can be made if a company engineers it to last?
This has a rotary compressor that according to GE was "machined to a few ten-thousandths of an inch". So far, I've yet to see another and I expect it's due to the tolerances required for it to work. It has a centrifugal type unloader as well as some how supplies the bearings with oil under pressure. There's a fan on top which I assume is to help cool the windings.
Here are two short videos of a compressor someone removed from a unit because it was seized. After removing it he was able to free it up by hand.
Compressor running exposed
https://youtu.be/bfkNLHy9nkw
Compressor turned by hand to show how it pumps
https://youtu.be/gn0u7dFBCTk
@Techman
My 1933 fridge is finally complete and back in use as of July 4th 2015.
Current cycle times are approximately 6 minutes on 13 minutes off with a cabinet temp of around 31F. Power consumption is 170W for a few seconds dropping down to around 168W which then continues to slow drop until the machine shuts off at around 153W. This is including the 12W crank case heater's consumption. Power factor is around 0.6. The 12W crank case heater is required because the compressor dome is the highside and the refrigerant likes to condense and lay under the oil.
Refrigerant is methyl formate. Oil is around 2 quarts of highly refined "Nujol" mineral oil according to the service manual. The oil floats on top of the refrigerant and is removed from the evaporator via a skimmer.
When running hard such as freezing ice the condenser runs in the high 90s and the top of the compressor around 104F which gives a high side pressure of around 3 PSI. The evaporator runs between 8F and 14F which gives a lowside pressure of between 25" and 26" HG although it has no issue pulling it below 27" HG if it runs long enough.
I had to convert this from a highside float to a capillary tube as the valve seat was badly damaged. I'm told, with a float valve the cycle times are typically slightly better than I'm seeing but I guess it is what it is.
82 years old and still pumping like the day it was made. Isn't it amazing what can be made if a company engineers it to last?
This has a rotary compressor that according to GE was "machined to a few ten-thousandths of an inch". So far, I've yet to see another and I expect it's due to the tolerances required for it to work. It has a centrifugal type unloader as well as some how supplies the bearings with oil under pressure. There's a fan on top which I assume is to help cool the windings.
Here are two short videos of a compressor someone removed from a unit because it was seized. After removing it he was able to free it up by hand.
Compressor running exposed
https://youtu.be/bfkNLHy9nkwCompressor turned by hand to show how it pumps
https://youtu.be/gn0u7dFBCTk@Techman
ChrisJ
6
Re: What happened to Icesailor
He had a cantankerous style, that would grow on you once you understood his MO, I rather enjoyed it.
He is a wealth of knowledge, and that all knowingness is slipping away from this industry.
I hope he returns.
He is a wealth of knowledge, and that all knowingness is slipping away from this industry.
I hope he returns.
hot_rod
5
RPA and Kilowatt Financial now offering financing up to $30,000 in home approvals...
Attention Contractor members of the RPA. We are working hard behind the scene to help make your business successful and sustainable. Check out our most recent accomplishment at http://www.radiantprofessionalsalliance.org/Press Release/2015-07-09 RPA Kilowatt Financing.pdf
You can now take NO out of your lexicon when the consumer asks you if you can provide decent financing. Increase add on sales of soalr thermal, high efficiency circulators, WiFi thermostats and more. Get signed up NOW and be ready when heating season hits. Or use it for financing those needed AC replacements and upgrades. Spread the word, if you aren't a member, you should be. We have a lot of great things going on in this organization.
You can now take NO out of your lexicon when the consumer asks you if you can provide decent financing. Increase add on sales of soalr thermal, high efficiency circulators, WiFi thermostats and more. Get signed up NOW and be ready when heating season hits. Or use it for financing those needed AC replacements and upgrades. Spread the word, if you aren't a member, you should be. We have a lot of great things going on in this organization.
Re: Too much Head?
It creates huge head, because all the flow is now forced through the orifice of the monoflo tee. It's like throttling the whole system.If you don't want to use it to feed an emitter, you need to pipe a by-pass.
Paul48
5
Re: Dan and the horse he's riding in on
It is actually a sad fact that Mr. Holohan stops performing the seminars and other scientific gathering .I ,from this corner of the world , have studied his informative and unforgettable lessons for nearly 10 years .the first 3 years in Persian and the rest in English language .He was matchless and is matchless and will be matchless professor in the world of heating industry who has the golden opportunity to side with those old timers that the industry never forgets them .So, I on behalf of my crew appreciate him for whatever he has done for us generously and with alacrity over years .Finally, He immortalizes his name in this industry by bridging between last generation and current generation ,and specifically engender the atmosphere for us to feel that we witness the primitive years on the industry and touching the reality of how this industry evolve up to now .Thank God for giving me this opportunity to have friendship with him and other instructors that he has introduced them to me .
Wishing you and yours the best atmosphere of peace and tranquility .
Yours Sincerely,
Your loyal student
Roohollah
Wishing you and yours the best atmosphere of peace and tranquility .
Yours Sincerely,
Your loyal student
Roohollah
Re: Help with radiant zoning
Janice. Call me right away. Consider this DONE. Matt Mad Dog Sweeney 516.322.2881
Re: Remembering Tom Schwarz ("TGO") While Repiping a Boiler
Beautiful work, I'm glad it's of use to you. My hubby would have approved. Thank you for posting the pictures.
TGO_wife
5
Re: Indirect HWH and forced hot water zone?
Justin , Where are you located ? Has anyone performed a heat loss of any kind on the areas being discussed ?
Rich_49
5
Re: Indirect HWH and forced hot water zone?
Just to confirm .
You have a structure that has steam heat already ? You want to add a boiler (hot water) to heat newer or added areas and do domestic hot water ?
Don't be surprised that qualified contractors are not easily found .
Will you be installing a new gas / steam boiler and do you wish for efficiency ? Are you taking advantage of any NJNG programs for your conversion ? Keyport is not too far for us , give John or myself a holler if you'd like to discuss .
You have a structure that has steam heat already ? You want to add a boiler (hot water) to heat newer or added areas and do domestic hot water ?
Don't be surprised that qualified contractors are not easily found .
Will you be installing a new gas / steam boiler and do you wish for efficiency ? Are you taking advantage of any NJNG programs for your conversion ? Keyport is not too far for us , give John or myself a holler if you'd like to discuss .
Rich_49
5