Abstract
This research studies the evaluation of the heat flow exchanged between the soil, with two different types (soil in concrete and soil in asphalt), and the urban environment on a streets of open shape. A method which takes into account all fluxes is established. Thereafter, a numerical approach is made in order to assess the impact of the modification of energy balance on the air warming. The proposed approach provides assistance in the identification of important parameters put in an obvious place the phenomenon of warming of air and which can explain the thermal phase between the soil and urban environment in summer period. This is due to the important sunshine duration and the importance mineral surface exposed to the direct sunlight. A set of field measurement is performed using “multmeter” equipments to measure the temperature of the under soil, the air temperature and the wind speed using a measuring instrument called “thermo-anemometer with propeller LV 110”. The temperature of the surface soil by an instrument called “Infrared Thermometer”. The relative humidity through an instrument called” Thermo- hygrometer HD100”. The time interval in the measurements is two hours. A total of two measuring stations, representing open street with two different soil coatings (asphalt and concrete), are chosen in the city of Biskra. Such research is needed to find reliable ways to determine the energy balance in an urban environment in the future.
Abstract
This research studies the evaluation of the heat flow exchanged between the soil, with two different types (soil in concrete and soil in asphalt), and the urban environment on a streets of open shape. A method which takes into account all fluxes is established. Thereafter, a numerical approach is made in order to assess the impact of the modification of energy balance on the air warming. The proposed approach provides assistance in the identification of important parameters put in an obvious place the phenomenon of warming of air and which can explain the thermal phase between the soil and urban environment in summer period. This is due to the important sunshine duration and the importance mineral surface exposed to the direct sunlight. A set of field measurement is performed using “multmeter” equipments to measure the temperature of the under soil, the air temperature and the wind speed using a measuring instrument called “thermo-anemometer with propeller LV 110”. The temperature of the surface soil by an instrument called “Infrared Thermometer”. The relative humidity through an instrument called” Thermo- hygrometer HD100”. The time interval in the measurements is two hours. A total of two measuring stations, representing open street with two different soil coatings (asphalt and concrete), are chosen in the city of Biskra. Such research is needed to find reliable ways to determine the energy balance in an urban environment in the future.
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