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#0 dbbase_sql->halt(Invalid SQL: update pwn_comment set cl=cl+1 where id='9' and iffb='1') called at [D:\freehost\fp0753\web\includes\db.inc.php:55] #1 dbbase_sql->query(update {P}_comment set cl=cl+1 where id='9' and iffb='1') called at [D:\freehost\fp0753\web\comment\module\CommentContent.php:68] #2 CommentContent() called at [D:\freehost\fp0753\web\includes\common.inc.php:524] #3 PrintPage() called at [D:\freehost\fp0753\web\comment\html\index.php:13] -梅州市梅江区飞鸿电脑经营部
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发布于:2020-2-20 11:08:23  访问:1 次 回复:0 篇
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Benefits Of Insulation
Thermal insulation is the reduction of heat transfer (i.e., the transfer of thermal energy between objects of differing temperature) between objects in thermal contact or in range of radiative influence. Thermal insulation can be achieved with specially engineered methods or processes, as well as with suitable object shapes and materials.
Heat flow is an inevitable consequence of contact between objects of different temperature. Thermal insulation provides a region of insulation in which thermal conduction is reduced or thermal radiation is reflected rather than absorbed by the lower-temperature body.
The insulating capability of a material is measured as the inverse of thermal conductivity (k). Low thermal conductivity is equivalent to high insulating capability (Resistance value). If you have any issues about in which and how to use aerolite insulation, you can make contact with us at our web site. In thermal engineering, other important properties of insulating materials are product density (ρ) and specific heat capacity (c).
Maintaining acceptable temperatures in buildings (by heating and cooling) uses a large proportion of global energy consumption. Building insulations also commonly use the principle of small trapped air-cells as explained above, e.g. fiberglass (specifically glass wool), cellulose, rock wool, polystyrene foam, urethane foam, vermiculite, perlite, cork, etc. For a period of time, Asbestos was also used, however, it caused health problems.
When well insulated, a building:
energy efficient
provides more uniform temperatures throughout the space. There is less temperature gradient both vertically (between ankle height and head height) and horizontally from exterior walls, ceilings and windows to the interior walls, thus producing a more comfortable occupant environment when outside temperatures are extremely cold or hot.
cheap
reduces carbon footprint.
Window insulation film can be applied in weatherization applications to reduce incoming thermal radiation in summer and loss in winter.
In industry, energy has to be expended to raise, lower, or maintain the temperature of objects or process fluids. If these are not insulated, this increases the energy requirements of a process, and therefore the cost and environmental impact.
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