Analysis of the economic aspects of insulation in buildings with special reference to the stresses in framed structures, resulting from changes in temperature and humidity
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Date
2015-02-20
Authors
Csiszar, Joseph
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Abstract
The consideration of the problems of economic insulation
against temperature variation has only come to
the fore in recent years* The outstanding developments
in methods of central heating which have grown up with
the XXth Century have brought with them a desire to investigate
the manner in vAiich heat losses occur in different
types of buildings.
After the Great War, shortage of capital, lack of
fuel, and the general want of suitable material for
building oaused a demand for general construction on
much cheaper lines and vith the use of much lighter material*
One difficulty of this new method of building was,
that very little data on the insulating properties of
the materials chosen for use was available, and what
little data there was, was largely incorrect.
The consumption of fuel required to heat buildings
during the winter months reached enormous proportions
because of this, and it was quite impossible to lower
the consumption without discomfort.
In direct contrast, during the summer months, the
rays of the sun penetrated to such on extent that adequate
cooling became an even more urgent problem.
In certain countries in which long bright cold
nights are a feature of the winter climate, walls and
especially flat roofs of buildings radiate heat rays
continuously into the atmosphere for 24 hours every day.
The atmosphere being of comparatively infinite proportions
absorbs these heat rays, providing only short periods
of sun radiation in exchange. In fact in mid
winter in extra time latitudes the sun only shines for
such a short period out of the £4 hours that the heat