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Sustainable Construction
Sustainable Construction

... The South facing windows are triple glazed to prevent heat loss. Overhangs are strategically orientated such that they provide shade from the hot summer sun while allowing rays from the low winter sun to penetrate helping to warm the home when most needed. North facing windows at the top of the ...
Modeling of combined thermal and mechanical action in roller
Modeling of combined thermal and mechanical action in roller

... procedure for the simulation of construction process and service life of RCC dams is presented. It takes into account the more relevant features of the behavior of concrete such as hydration, ageing and creep. A viscoelastic model, including ageing effects and thermal dependent properties is adopted ...
Heating of the Atmosphere
Heating of the Atmosphere

... What is Thermal Energy? ...
ME 3210 Mechatronics – Thermal Systems
ME 3210 Mechatronics – Thermal Systems

... There are sources which can provide a defined temperature or a defined heat flow. Determining the proper directions for the sources is much like that for electrical systems. A temperature source can provide a higher temperature to system. This is like connecting the positive voltage to the system. I ...
TDS template
TDS template

... {oF.ft2.h/Btu}) Some other Values that may be encountered: U – Value (Thermal Transmittance) The Rate of heat flow through a building element. Reciprocal of thermal resistance (U=1/R) C – Value Thermal conductivity of K-factor when the material being tested is either non-homogeneous or not 1 inch (2 ...
Laboratories at Building Materials, Lund University, Sweden
Laboratories at Building Materials, Lund University, Sweden

... the temperature change of the sensor following a heating period is monitored. Because of the unique shape of the sensor, it is possible to calculate both the thermal conductivity and the volumetric heat capacity (and thus the thermal diffusivity) the temperature change. The sample has to have a plan ...
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now

... serious for the building occupants. Low internal surface temperatures, in the area of the thermal bridge, can cause condensation if they are below the dew point. This is likely to result in structural integrity problems with absorbent materials, such as insulation products or plasterboard – or worse ...
Chapter 6 Lesson 2 Name_____________ Describe the three ways
Chapter 6 Lesson 2 Name_____________ Describe the three ways

... In Figure 6-1, thermal energy is transferred to the sunbather in room B primarily by ____________________. In Figure 6-1, most of the heat provided by the fireplace in room C goes up the chimney and is therefore transferred by ____________________. In Figure 6-1, the thermal energy of the iron in ro ...
calculating specific heat capacity - Mikus
calculating specific heat capacity - Mikus

... When in contact with each other, objects at different temperatures transfer thermal energy until they reach the same temperature. This is called thermal equilibrium. Conservation of energy requires that the thermal energy lost by the hotter object as it cools be equal to the thermal energy gained by ...
Proudly Presents: Dr. Mark Hepokoski
Proudly Presents: Dr. Mark Hepokoski

... Human Physiological Modeling Techniques for Predicting Thermal Comfort Accurate assessment of thermal comfort requires comprehensive analysis of the environmental effects contributing to the heat transfer to and from the human body. A common comfort evaluation approach is to find a direct correlatio ...
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Thermal comfort

Thermal comfort is the condition of mind that expresses satisfaction with the thermal environment and is assessed by subjective evaluation (ANSI/ASHRAE Standard 55). Maintaining this standard of thermal comfort for occupants of buildings or other enclosures is one of the important goals of HVAC (heating, ventilation, and air conditioning) design engineers.Thermal neutrality is maintained when the heat generated by human metabolism is allowed to dissipate, thus maintaining thermal equilibrium with the surroundings. The main factors that influence thermal comfort are those that determine heat gain and loss, namely metabolic rate, clothing insulation, air temperature, mean radiant temperature, air speed and relative humidity. Psychological parameters such as individual expectations also affect thermal comfort.The Predicted Mean Vote (PMV) model stands among the most recognized thermal comfort models. It was developed using principles of heat balance and experimental data collected in a controlled climate chamber under steady state conditions. The adaptive model, on the other hand, was developed based on hundreds of field studies with the idea that occupants dynamically interact with their environment. Occupants control their thermal environment by means of clothing, operable windows, fans, personal heaters, and sun shades.The PMV model can be applied to air conditioned buildings, while the adaptive model can be generally applied only to buildings where no mechanical systems have been installed. There is no consensus about which comfort model should be applied for buildings that are partially air conditioned spatially or temporally.Thermal comfort calculations according to ANSI/ASHRAE Standard 55 can be freely performed with the CBE Thermal Comfort Tool for ASHRAE 55.Similar to ASHRAE Standard 55 there are other comfort standards like EN 15251 and the ISO 7730 standard.
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