Interesting NY research study on venting one-pipe steam systems.

Jason_44

Ran across this study while google-ing something steam related.

An interesting read, especially if you're wondering whether venting the snot out of a one-pipe steam system will actually lead to reduced energy costs.

Jason

FJL

Great Suff

Looks like interesting reading. Was skimming the pictures at the end. In my building, we have risers vents exactly as illustrated in figure 4 in Appendix E. The resident in that apt hates their appearance, but we've convinced her that they are important for properly heating the building.

Steamhead (in transit)

They ought to re-try that study

using Gerry Gill and Steve Pajek's info. Frank Gerety had the right idea, but until Gerry and Steve did their work, I don't think anyone had accurately measured the throughput of various types of vents at the ounce pressures we encounter in steam systems.

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The Boiler Dr.

Jason

I can't open that PDF. Could you send it to me directly at
boilers-r-us@shaw.ca

Thanks

bb_10

Check the dates

on the report. It's old and technology has gotten much better since then.

I do agree it would be good to do it again, but also look at other factors as well.

bb

Kool Rod

Balancing Apartments

I'd love to see a new study. Venting can reduce the heat imbalance between aptments, but as the study points out, other factors, such as the heat loss of each individual apt, can account for a heat imbalance, which can exist even when the heating system is not activiated. The goal is to prevent the steam heat from contributing to the imbalance. In my apt, I've reduced overheating by installing smaller vents on my rads, but the result is that my apt is colder after recovery from the morning setback, when compared to the apt with the t-stat sensor, and the imbalance tends to lessen each time the boiler cycles. Although my apt is not "balanced," in that the temp is not in sync with sensor, I am more comfortable. I suppose a TRV is the way to go if I want to try be in sync and achieve a more stable temp in the apt.