temperature ratio

[EN 13141-7:2021, 3.15]:temperature difference between inlet and outlet of one of the air flows divided by the temperature difference between the inlets of both air flows

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temperature, dewpoint

[EN 12792:2003, 353]:temperature of a mixture of air and water vapour at which further cooling or adding more water vapour results in condensation of water vapour from the air.

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temperature, dry bulb

[AIVC, Air infiltration and ventilation glossary, 1992]:the [air] temperature indicated by a dry temperature sensing element (such as the bulb of a mercury in glass thermometer) shielded from the effects of radiation.

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