Refrigerating and Air-Conditioning Engineers American Society of Heating’s scientific contributions

... The solar absorptivity on the outside of surface i t The simulation timestep U (FTMY −i) floor A change in the attic floor U-value to minimize the change in the total thermal load for a given future weather scenario ( · ) + Perform operation is value in parenthesis is positive Units (C) Temperature: celsius (W/m 2 ) Heat flux: watts per square meter (W/m 2 -K) U-value: watts per square meter per degree kalvin examine the performance of different attic designs as a function of climate change in order to determine how construction standards and other strategies can be leveraged. This will in turn inform standards like ANSI/ASHRAE 90.1 [9], ANSI/ASHRAE 90.2 [9], and IECC [10], that determine building envelope, Heating Ventilation and Air Conditioning (HVAC) sizing, and ice/snow melt systems. In order to analyze potential solution strategies a simulation and analysis platform is needed to systematically evaluate attic designs across the U.S. for different climate scenarios. ...

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Exploring future climate trends on the thermal performance of attics: Part 1 − Standard roofs

... The Figure 2 presents the virtual model of the building and the home under study. The authors decided to integrate a standard air conditioning system into the home model, according to the recommendations of Appendix G of ASHRAE 90.1 [5]. This facilitates quantifying the impact of the construction parameters affected by solar radiation. ...

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Evaluation of Constructive Parameters to Minimize the Effects of Solar Radiation in Households with Tropical Climate

... Laminar flow occurs in the hot fluid at (75,85,95°C) at a mass flow rate of (10,12,18,24)flow rate . Table (2) illustrates the thermophysical properties of the hot mixture [10]. Air is the coolant fluid at 5.5 m/s and 35 °C. ...

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Numerical investigation on Enhancing Heating performance in Automotive Radiator