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__________________ is an index which combines the effect of air movement, humidity and temperature.

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__________________ is an index which combines the effect of air movement, humidity and temperature.

(a) Saturated air

(b) Effective humidity

(c) Dry bulb temperature

(d) Effective temperature

This question was posed to me in final exam.

The query is from Types of Ventilation in portion Acoustics and Ventilation of Construction & Building Materials

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Correct choice is (d) Effective temperature

To explain I would say: Effective temperature indicates the temperature of air at which sensation of same degree of cold or warmth will be experienced as in quite a fully saturated at the same temperature. Thus, if two rooms have the same effective temperature, no change of temperature will be experienced by a person when he suddenly leaves one room and enters the room.

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