thermal and moisture control in insulated assemblies - U
... resistance value may be appreciably lower than the estimated value, particularly if the air space is not sealed or of uniform thickness (Palfey 1980). For critical applications, a particular design’s effectiveness should be confirmed by actual test data undertaken by using the ASTM hot box method (A ...
... resistance value may be appreciably lower than the estimated value, particularly if the air space is not sealed or of uniform thickness (Palfey 1980). For critical applications, a particular design’s effectiveness should be confirmed by actual test data undertaken by using the ASTM hot box method (A ...
channelled thermal energy store with liquid heat transport medium
... come near to the volumetric heat capacity of the water with much higher upper temperature limits (magnesite 3.77 MJ/m3K, corundum 3.3 MJ/m3K, cast iron 4.1 MJ/m3K [7]). Screened pebble stone, cracked stone (1.52.5 MJ/m3K), concrete (0.8-1.8 MJ/m3K), wet soil (3.56 MJ/m3K) [7] are used as sensible he ...
... come near to the volumetric heat capacity of the water with much higher upper temperature limits (magnesite 3.77 MJ/m3K, corundum 3.3 MJ/m3K, cast iron 4.1 MJ/m3K [7]). Screened pebble stone, cracked stone (1.52.5 MJ/m3K), concrete (0.8-1.8 MJ/m3K), wet soil (3.56 MJ/m3K) [7] are used as sensible he ...
DOE Warms Up to Thermal Mass in Log Walls
... The prescribed insulation requirements that will achieve the goals of the energy code were modeled by ORNL with a use of computer simulations that included assumptions for the contributions of the framing, sheathing elements and air films from the ASHRAE Handbook of Fundamentals. The average wood-fr ...
... The prescribed insulation requirements that will achieve the goals of the energy code were modeled by ORNL with a use of computer simulations that included assumptions for the contributions of the framing, sheathing elements and air films from the ASHRAE Handbook of Fundamentals. The average wood-fr ...
Cooling And Heating Load Calculations -Estimation Of
... 35.2. Heating versus cooling load calculations: As the name implies, heating load calculations are carried out to estimate the heat loss from the building in winter so as to arrive at required heating capacities. Normally during winter months the peak heating load occurs before sunrise and the outd ...
... 35.2. Heating versus cooling load calculations: As the name implies, heating load calculations are carried out to estimate the heat loss from the building in winter so as to arrive at required heating capacities. Normally during winter months the peak heating load occurs before sunrise and the outd ...
Performance and testing of thermal interface materials
... developed that make use of phase change materials (PCM), thermally conductive elastomers, and thermally conductive adhesive tapes. Most thermal interface materials, except pure metals, are composed of a polymer matrix filled with thermally conductive particles (i.e. metals, ceramics) (Viswanath et a ...
... developed that make use of phase change materials (PCM), thermally conductive elastomers, and thermally conductive adhesive tapes. Most thermal interface materials, except pure metals, are composed of a polymer matrix filled with thermally conductive particles (i.e. metals, ceramics) (Viswanath et a ...
Heat stress in mining
... order to maintain a thermal balance during excessive physical activity the mechanisms of dissipation must work harder to rid the body of the excess heat. Convective and radiative heat losses remain almost constant regardless of the amount of heat produced. Therefore, with increasing heat stress, if ...
... order to maintain a thermal balance during excessive physical activity the mechanisms of dissipation must work harder to rid the body of the excess heat. Convective and radiative heat losses remain almost constant regardless of the amount of heat produced. Therefore, with increasing heat stress, if ...
Heating, Ventilation and Air Conditioning in Smart Energy
... Future buildings will need very little thermal energy, because of well-insulated envelopes, highperformance windows, and energy-efficient ventilation. It is a wish to use more central heating with water as energy carrier at the sacrifice of direct electric heating. To succeed with this it is necessa ...
... Future buildings will need very little thermal energy, because of well-insulated envelopes, highperformance windows, and energy-efficient ventilation. It is a wish to use more central heating with water as energy carrier at the sacrifice of direct electric heating. To succeed with this it is necessa ...
GAS PROCESSES - Elements of Heat Engines
... If a gas receives heat in such a manner that its temperature remains constant during expansion, it will do external work equal to the heat supplied. Such an expansion at constant temperature is known as isothermal expansion (fig. 2-4). On the other hand if work is done on the gas (during isothermal ...
... If a gas receives heat in such a manner that its temperature remains constant during expansion, it will do external work equal to the heat supplied. Such an expansion at constant temperature is known as isothermal expansion (fig. 2-4). On the other hand if work is done on the gas (during isothermal ...
Effects of Surface Tension and Binary Diffusion on Pool Boiling of
... Roll and Myers (1966) attribute this to early nucleation at lower wall superheats. The smaller available temperature difference results in a subsequent slower growth rate. Another influencing factor is that, in the presence of a surface-active agent, bubbles do not coalesce, thereby leaving a larger ...
... Roll and Myers (1966) attribute this to early nucleation at lower wall superheats. The smaller available temperature difference results in a subsequent slower growth rate. Another influencing factor is that, in the presence of a surface-active agent, bubbles do not coalesce, thereby leaving a larger ...
Insulated glazing
Insulated glazing (IG), more commonly known as double glazing (or double-pane, and increasingly triple glazing/pane) is double or triple glass window panes separated by a vacuum or other gas filled space to reduce heat transfer across a part of the building envelope.Insulated glass units are manufactured with glass in range of thickness from 3 mm to 10 mm (1/8"" to 3/8"") or more in special applications. Laminated or tempered glass may also be used as part of the construction. Most units are manufactured with the same thickness of glass used on both panes but special applications such as acoustic attenuation or security may require wide ranges of thicknesses to be incorporated in the same unit.