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The annual fuel utilization efficiency (AFUE; pronounced 'A'-'Few' or 'A'-'F'-'U'-'E') is a thermal efficiency measure of space-heating furnaces and boilers.The AFUE differs from the true 'thermal efficiency' in that it is not a steady-state, peak measure of conversion efficiency, but instead attempts to represent the actual, season-long, average efficiency of that piece of equipment ...
Reverberatory furnaces (in this context, usually called air furnaces) were formerly also used for melting brass, bronze, and pig iron for foundry work. They were also, for the first 75 years of the 20th century, the dominant smelting furnace used in copper production, treating either roasted calcine or raw copper sulfide concentrate. [ 1 ]
The Mitsubishi model was the first air conditioner with a cross-flow fan. [64] [65] [66] In 1969, the first mini-split air conditioner was sold in the US. [67] Multi-zone ductless systems were invented by Daikin in 1973, and variable refrigerant flow systems (which can be thought of as larger multi-split systems) were also invented by Daikin in ...
Norway: 95 RON are widely available, but 98 RON is also available at Shell, here it goes under the name v-power; it is 10-20% more expensive as 95 RON fuel. In 2023 95 RON fuel got change to 95E10 and 98 RON to 98E5. SHELL still has 98 octane under the name v-power, but also most of the Esso gas stations have 98 octane fuel as well. [73]
In addition, the 2001 revision to ANSI K13.1-1973 provides exclusive colors to be used for non-P100 cartridge filters, in two categories: oil-resistant (remaining R- and P- NIOSH ratings), and non-oil resistant (all N-ratings). [45] By definition, ANSI Z88.2-2015 considers N100, R100, P100, and HE as HEPA filters. [33]
The rationale for this approach was that, since the clinical pictures of adult schizophrenia and childhood schizophrenia are identical, childhood schizophrenia should not be a separate disorder. [15] However, the section in schizophrenia's Development and Course in DSM-5, includes references to childhood-onset schizophrenia .
To date, Lady Bird has a 99% rating with 398 positive reviews and four negative reviews. [8] Paddington 2 held a perfect rating from its release in 2017 until a film critic published a negative review in June 2021. To date, Paddington 2 has a 99% rating with 251 positive reviews and two negative reviews. [9]
A mirror reflecting the image of a vase A first-surface mirror coated with aluminium and enhanced with dielectric coatings. The angle of the incident light (represented by both the light in the mirror and the shadow behind it) exactly matches the angle of reflection (the reflected light shining on the table). 4.5-metre (15 ft)-tall acoustic mirror near Kilnsea Grange, East Yorkshire, UK, from ...
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