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jumper

jumper

Joined on January 15, 2012

Last Post on August 20, 2014

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weeny rads?

@ August 20, 2014 3:06 PM in New House Heating

Modern house needs much less heating than days of steam.

condensate's path

@ August 20, 2014 3:03 PM in Oh look what I found in my closet

I'm happy Chris raised this question. Seems to me that as long as condensate runs along wall of pipe we're okay. But when condensate drips into interior of pipe there's much more surface area for steam to exchange energy with condensate. This is something I think about when I have nothing to do.

propane in outdoor chillers?

@ August 16, 2014 3:47 PM in propane in outdoor chillers?

If the chiller is on roof is it dangerous to replace R22 with propane? Is there an approved oil to go with it for scroll compressors?

dual orifices?

@ August 15, 2014 2:02 PM in radiator steam traps vertical pattern single union

At the exit of a terminal you want to hold back steam while letting air and condensate through. At the entrance you want to retard steam to prevent overheating. To do the latter you keep putting in smaller orifices until you're satisfied. Lost Art describes devices to perform functions of steam traps. That traps are the most common indicates either that those devices were unsatisfactory or that trap vendors were effective.

this is why

@ July 30, 2014 2:25 PM in Brazing without nitrogen?!

Packaged unitary and chillers are bought.Even in industrial & high technology environment management does want to get into refrigeration assembly.

upside down furnace

@ July 27, 2014 1:17 PM in upside down furnace

Why aren't downflow furnaces more common?

blower energy consumption?

@ July 27, 2014 1:09 PM in Another Steam Boiler Sizing Concern

Even if power burner burns less gas than atmospheric; what about the electricity the power burner needs?

how old?

@ July 26, 2014 3:43 PM in Cleaning 1-1/2" tub drain line

Old ferrous sharp bend traps rust closed. No tool I've seen will open the up leg from the down leg.

This is something I wonder about.Why do bath and shower traps often have such sharp turn?

fuzzy recollections

@ July 23, 2014 8:36 PM in What did it cost in 1960?

Late seventies I remember CI still costing less than copper fin. I also believe that builders paid $1000.00 to install boiler,piping,and radiators in three storey units,store on ground and two apartments above. These are hazy memories but what sticks in my mind is paying a few hundred$ each for small Hydrotherm boilers. That would be late seventies.

technique can matter too

@ July 22, 2014 5:32 PM in thread sealant

especially with cheater thread

easy to find out

@ July 22, 2014 5:23 PM in Electric Baseboard Vs Hydronic Electric Baseboards

Icesailor can stand in front of and behind one of those dish type radiant heaters and then decide if it's in his head. Comfort depends on combination of air temperature and radiant temperature.

if tank is bad

@ July 21, 2014 2:03 PM in Constantly purging air in hydronic system

Eventually bladder fails. People with foresight then replace with old fashioned gas water tank. At least that tank will never need replacing. Some people with even more foresight pressurize with nitrogen.

worth the price

@ July 21, 2014 1:53 PM in Electric Baseboard Vs Hydronic Electric Baseboards

Liquid filled is much more satisfactory than plain heating elements.The latter cools off too quickly after thermostat switches it off. I also second Mark's suggestion to consider ceiling radiant. Most people are more comfortable at lower air temperature.

automatic venting

@ July 20, 2014 1:48 PM in Constantly purging air in hydronic system

Works better and longer if it is high enough, & if pressure is controlled. For example,some antique open tank systems are trouble free for generations. Air always gets into every hydronic system and water always disappears. Trouble free venting requires a device at a high enough location with low enough pressure so that water doesn't touch the device. In buildings with elevators automatic vents are installed in the penthouse.There they operate for decades until somebody or something(stupid PRV) blows the thing right off.

here's an anecdote

@ July 19, 2014 3:25 PM in radiator cover box design question

Apartment building. Steel siding was added to east wall. Rooms against this wall went from too cold to too hot. Installed louvered enclosures. Tenants could adjust louvres instead of complain. I believe heating was one pipe.

I like the idea of adding thermal mass but I would not use the radiator for support.

smaller AC ducts?

@ July 15, 2014 3:45 PM in boiler or forced air - need advice

I figure cooling load in Port Arthur is a third of heating load there. Also cold air is less viscous than hot air. Another advantage of AC only is that registers don't have to be near outside walls. If beaverpilot can work in attic he can put the air handler and ducts there.

smaller ducts

@ July 14, 2014 5:36 PM in boiler or forced air - need advice

AC only in Port Arthur can be smaller than for heating. If boiler uses natural gas and works,what's the hurry to replace?

rat prevention?

@ July 8, 2014 5:36 PM in Trap on 4" sewer main in basement

Long ago Toronto had unvented building traps outside. Somebody thought that sewer rats wouldn't swim through them.

good old days

@ July 8, 2014 5:25 PM in Low flow air solar walls

Saw many installations in Canada on industrial buildings in nineteen seventies. Difference between comfy and chilly is only a few degrees.

icesailor beat me to the punch

@ July 8, 2014 5:12 PM in Jury Rules That CSST is a Defective Product

Why not lightning rods?

no solar collector

@ July 8, 2014 5:05 PM in Peer review please...

Maybe you don't need no stinking solar collector? Ever notice how snow disappears under a maple tree? So...... maybe you just have to insert pipes or rods thirty feet down to draw geothermal heat up to driveway. I never heard of it but I'm interested in how well that would work and also what objections envirowhackos will fabricate.

Laurentians

@ June 12, 2014 5:53 PM in Steam-Heated Hotel!

Lodges there were steam heated there generations ago. One pipe. Hydro Quebec pushed electric. Most went baseboard instead of radiant.
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