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Training course on energy efficiency in SMEs - engine-sme.eu

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Cool<strong>in</strong>g<br />

Particularly <strong>in</strong> large commercial office build<strong>in</strong>gs, high heat<br />

loads are developed through light<strong>in</strong>g, comput<strong>in</strong>g and other<br />

electrical sources. Further heat ga<strong>in</strong>s are derived from<br />

occupants, solar radiati<strong>on</strong> and high outdoor temperatures.<br />

These factors make cool<strong>in</strong>g of the <strong>in</strong>door air essential.<br />

The choice is either to <strong>in</strong>troduce mechanical cool<strong>in</strong>g or to<br />

<strong>in</strong>troduce ventilati<strong>on</strong> cool<strong>in</strong>g. In either case heat ga<strong>in</strong>s should<br />

be m<strong>in</strong>imised by good build<strong>in</strong>g design and reduced power<br />

c<strong>on</strong>sumpti<strong>on</strong>.<br />

Mechanical cool<strong>in</strong>g is <strong>energy</strong> <strong>in</strong>tensive and c<strong>on</strong>tributes to<br />

peak power loads. When mechanical cool<strong>in</strong>g is needed,<br />

ventilati<strong>on</strong> must be m<strong>in</strong>imised to prevent the unnecessary loss<br />

of c<strong>on</strong>diti<strong>on</strong>ed air.<br />

www.eng<strong>in</strong>e-<strong>sme</strong>.<strong>eu</strong>

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