Latitudes:

icesailor

If all the major cities in Northern Europe (Paris, France, Munich Germany et al) are North of Montreal or Ottawa Canada, how does that effect the design of hydronic heating boilers used in the USA from European Designs? Its a lot colder North of Boston (42' N) than Munich Germany (48' North). 2,000+ elevation.

Just wondering.

Larry_52

If I understand your question correctly, the temp in Europe is much milder in winter because of what we call in the marine world I-95 aka the Gulf Stream. You could be cruising at a lovely 65 deg sea temp with the engine room at a lovely 100degs and in less than an hour the sea temp will go to 90degs and the engine room goes to a heat stroke 130degs. Don't miss that much. So all that hot water from the Gulf Stream current heads north and across to Europe giving it is milder temps.

But if anything truly dictates design over there it's the premium and availability of fuel.

SWEI

https://en.wikipedia.org/wiki/Thermohaline_circulation

icesailor

The warm Gulf Stream and cold subduction current only go as far North as Iceland, Ireland, Northern England and Scotland.

The Gulf Stream does not flow deeply in to the North Sea or flow into the Baltic Sea.

The average listed winter temperatures for the three cities in Germany (which also include Dresden), are colder than Boston, MA but warmer than Montreal, CA. The farther East you go in Northern Europe, the colder the average winter temperatures are.

The colder the average OAT is, the better constant circulation and/or ODR works. The larger the structure, the better it works. How well does it work in a 15,000 sq. ft. structure in a warmer climate?

That's all I'm asking.

Steamhead

I would think it's all about the design outdoor temperature, and how we deliver enough heat to the building at said temperature.

Gordy

Steam head hit it on the head. As OAT plummets MRT rises do to higher AWT thus higher average emitter temp surfaces. When OAT is Shoulder temps, or milder winter temps AWT decreases along with average emitter temps.

The Higher the average emitter temps the more warm, and fuzzy MRT becomes.