Hot birds pant to keep cooler than air

More Than Hot Air? Low Emission Zones, Air Pollution, and Infant Health

This paper investigates the effect of low emission zones on birth outcomes and air quality in Germany. The staggered introduction of the policy measure creates a credible natural experiment and a natural control group for births and air pollution measurements in cities that enact low emission zones. I show that the introduction of the most restrictive type of low emission zone decreases average...

Temperature Control of Industrial Water Cooler using Hot-gas Bypass

Abstract—In this study, we experiment on precise control outlet temperature of water from the water cooler with hot-gas bypass method based on PI control logic for machine tool. Recently, technical trend for machine tools is focused on enhancement of speed and accuracy. High speedy processing causes thermal and structural deformation of objects from the machine tools. Water cooler has to be app...

Hot air sauna burns.

Distributed and Non-Steadv State Modelling of an Air Cooler

Th•s paper presents the equation derivation as well as the stmulation results of a non-steady state distributed model for a commonly used type of evaporators -air coolers. In contraSt to others, the model puts the SU"Css on the rcfr~gcram mass transponation occuring in the two-phase flow region mside an air cooler. The so~led slip-effect between the vapour and liquid IS taCkled by using an adva...

Adaptation to heat and exercise performance under cooler conditions: a new hot topic.

Chronic exposure to a stressor elicits adaptations enhancing the tolerance to that stressor. These adaptive responses might also improve tolerance under less stressful conditions. For example, historically there has been much interest in the adaptive responses to high-altitude, or hypoxia, and their ergogenic potential under sea-level, or normoxic, conditions. In contrast, the influence of the ...