pavement materials have great impact on heat island control under the urban canyon layer. understanding the properties of pavement materials can help to reduce the heat island effect. introducing the main properties of pavement surfaces affecting sol-air temperature and mean radiant temperature - such as albedo, permeability, conductivity, thickness, emissivity, irradiation and convective air f...

This study examined the influences of aluminized (Type A) and non-aluminized firefighters’ protective clothing (Type B, C, D and CON) on physiological and subjective responses in radiant heat. Total clothing weight was 6.24, 6.38, 6.06, 5.76 and 3.82 kg for Type A, B, C, D and CON, respectively. Eight firefighters performed exercise at an air temperature of 30°C with 50%RH. Three bouts of 10 mi...

The mean radiant temperature (Tmrt) is the most complex variable regarding the input parameters for heat balance models of human being that are the background for the assessment of thermally unfavourable conditions and heat stress. This paper investigates the simplification of past studies that the Tmrt is equal to the air temperature (Ta) under indoor conditions. In a second step, the causes f...

In this paper, a new technique is being proposed to estimate the PMV by using an array of sensors for the automatic control of thermal sensation scale of the air conditioning system. The predicted mean vote (PMV) is a well recognized thermal comfort index and is used for measuring comfort level inside the conditioned space. It is a mathematical function dependent on air temperature, relative hu...

In the heat, a positive body heat storage and the associated increase in core body temperature elicit the reflex physiological thermoregulatory mechanisms of sweating and cutaneous vasodilation in order to enhance heat dissipation. However under circumstances where these mechanisms cannot facilitate a sufficiently high rate of heat loss, core body temperature continually rises, and if left unch...