Options for managing livestock production systems to adapt to
... 2. Environmental modification and thermal comfort in various housing systems Thermal stress occurs when any combination of environmental conditions cause the effective temperature of the environment to be higher/lower than the animal’s thermo neutral (comfort) zone. Four environmental factors influe ...
... 2. Environmental modification and thermal comfort in various housing systems Thermal stress occurs when any combination of environmental conditions cause the effective temperature of the environment to be higher/lower than the animal’s thermo neutral (comfort) zone. Four environmental factors influe ...
International - Ron Blank and Associates, Inc.
... Reflective Insulation Heat flow by radiation has been brought to the public’s attention with high efficiency windows, which commonly use the term "Low E" to advertise the higher performance ratings. The "E" stands for emittance and the values range from 0 to 1 with 0 being no radiation and 1 is the ...
... Reflective Insulation Heat flow by radiation has been brought to the public’s attention with high efficiency windows, which commonly use the term "Low E" to advertise the higher performance ratings. The "E" stands for emittance and the values range from 0 to 1 with 0 being no radiation and 1 is the ...
Thermal Performance of Rooftop Greenery system in Tropical
... The analytical method of evaluating the comfort zone for Malaysia have been studied by several authors (Rajeh, 1988, Jones, 1993), using the “Neutrality Temperature”. This study uses the neutrality temperature as a base to determine the thermal performance of the rooftop greenery system in topical c ...
... The analytical method of evaluating the comfort zone for Malaysia have been studied by several authors (Rajeh, 1988, Jones, 1993), using the “Neutrality Temperature”. This study uses the neutrality temperature as a base to determine the thermal performance of the rooftop greenery system in topical c ...
**** 1 - indico in2p3
... For the LHC luminosity upgrade: Replacing the final focus system of the interaction regions with higher performance magnets Increasing the magnetic field from 9 T (NbTi) to beyond 12 T using Nb3Sn or Nb3Al ...
... For the LHC luminosity upgrade: Replacing the final focus system of the interaction regions with higher performance magnets Increasing the magnetic field from 9 T (NbTi) to beyond 12 T using Nb3Sn or Nb3Al ...
Cost-exergy optimisation of linear Fresnel reflectors
... ray-tracing have also been used to optimise the optical performance of an LFR with equidistant spacing [20-21]. A study of the exergy for an LFR provides a means of analysing the collector’s maximum available power, for given operating and ambient temperatures, without the need for a detailed specif ...
... ray-tracing have also been used to optimise the optical performance of an LFR with equidistant spacing [20-21]. A study of the exergy for an LFR provides a means of analysing the collector’s maximum available power, for given operating and ambient temperatures, without the need for a detailed specif ...
Thin-Film Thermal Conductivity Measurement Using Microelectrothermal Test Structures and Finite-Element-Model-Based Data Analysis
... suspended SiNx window structure. These steps are followed by depositing the 280 µm× 80 µm× 140 nm thick Al sample via electron-beam evaporation, completing the device encapsulation with a 210-nm-thick silicon nitride capping layer and depositing the 30-nm-thick 5-µm-wide Ni heater and detector. Both ...
... suspended SiNx window structure. These steps are followed by depositing the 280 µm× 80 µm× 140 nm thick Al sample via electron-beam evaporation, completing the device encapsulation with a 210-nm-thick silicon nitride capping layer and depositing the 30-nm-thick 5-µm-wide Ni heater and detector. Both ...
IS3215571561
... heavier loads of heat than ever before. At the same time, the premium associated with miniaturized applications has never been greater, and space allocated for cooling purposes is on the decline. These factors have forced design engineers to seek more efficient heat sink technologies. Air-cooling al ...
... heavier loads of heat than ever before. At the same time, the premium associated with miniaturized applications has never been greater, and space allocated for cooling purposes is on the decline. These factors have forced design engineers to seek more efficient heat sink technologies. Air-cooling al ...
Power 01 Options for Hybrid Solar and Conventional Fossil Plants
... mandate that a portion of new generation must be from renewable energy. In areas that receive high levels of sunlight, solar technology is a viable option. To help alleviate the capital cost, dispatchability, and availability challenges associated with solar energy, hybrid systems are being consider ...
... mandate that a portion of new generation must be from renewable energy. In areas that receive high levels of sunlight, solar technology is a viable option. To help alleviate the capital cost, dispatchability, and availability challenges associated with solar energy, hybrid systems are being consider ...
Die drucktechnische Herstellung von Heatsinks
... Another particular advantage for the heat dissipation is the fact that the printed compound partly fills the existing heat vias (see Figure 10). This enlarges the contact area between the heat dissipating heatsink and the heat coupler on the printed circuit board. This enlargement of the contact are ...
... Another particular advantage for the heat dissipation is the fact that the printed compound partly fills the existing heat vias (see Figure 10). This enlarges the contact area between the heat dissipating heatsink and the heat coupler on the printed circuit board. This enlargement of the contact are ...
HTML
... challenges to microelectronics design. Referring to the international technology roadmap for semiconductors published in year 2002, the highest power density found in high-end workstation with 0.022 µm technology has a heat density approaching 100 W/cm2 [1]. This high heat density is actually of the ...
... challenges to microelectronics design. Referring to the international technology roadmap for semiconductors published in year 2002, the highest power density found in high-end workstation with 0.022 µm technology has a heat density approaching 100 W/cm2 [1]. This high heat density is actually of the ...
Heat Lump in Different Pavement Layer Using Ethylene Glycol as A
... because of its excellent heat absorbing characteristic. The solar thermal energy collected by the asphalt pavement can be harvested by circulating fluid through it. A system that is designed for this purpose is called asphalt solar collector (ASC). Renewable energy technologies are likely to become ...
... because of its excellent heat absorbing characteristic. The solar thermal energy collected by the asphalt pavement can be harvested by circulating fluid through it. A system that is designed for this purpose is called asphalt solar collector (ASC). Renewable energy technologies are likely to become ...
Criteria for the Passive House, EnerPHit and PHI Low Energy
... difficulties. Refurbishment to the EnerPHit Standard using Passive House components for all relevant structural elements in such buildings leads to extensive improvements with respect to thermal comfort, structural integrity, cost-effectiveness and energy requirements. The EnerPHit-Standard can be a ...
... difficulties. Refurbishment to the EnerPHit Standard using Passive House components for all relevant structural elements in such buildings leads to extensive improvements with respect to thermal comfort, structural integrity, cost-effectiveness and energy requirements. The EnerPHit-Standard can be a ...
Present status of solar distillation
... is due to the fact that it is simple in design and fabrication, easy to handle (unskilled manpower is sufficient) along with longer life, low unacost and low cost of water per litre. Further, due to low operation and maintenance cost it is most suitable in rural areas of remote region. (b) The activ ...
... is due to the fact that it is simple in design and fabrication, easy to handle (unskilled manpower is sufficient) along with longer life, low unacost and low cost of water per litre. Further, due to low operation and maintenance cost it is most suitable in rural areas of remote region. (b) The activ ...
abstract for ichs 2007
... Composite storage cylinders offer light weight, corrosion resistance, dimensional stability and can store gas at higher pressures. However, the current design methodology cannot yet guarantee their safe operation [1]. Typically, a composite high-pressure cylinder is made with a high molecular weight ...
... Composite storage cylinders offer light weight, corrosion resistance, dimensional stability and can store gas at higher pressures. However, the current design methodology cannot yet guarantee their safe operation [1]. Typically, a composite high-pressure cylinder is made with a high molecular weight ...
ch1010 heat transfer unit i heat conduction
... added or removed. Problems such as heat treatment of metals by quenching, time response of thermocouples and thermometers, etc can be analysed by this idealization of negligible internal resistance. The process in which the internal resistance is ignored being negligible in comparison with its surfa ...
... added or removed. Problems such as heat treatment of metals by quenching, time response of thermocouples and thermometers, etc can be analysed by this idealization of negligible internal resistance. The process in which the internal resistance is ignored being negligible in comparison with its surfa ...
Advanced Thermal Management Solutions on PCBs for High Power
... heat flux is conducted into the cooler through an enlarged area of the dielectric. This high heat spreading effect is due to the excellent thermal coupling of the two copper layers by the microvia arrays. However, because of the thick dielectric – a 90 µm thick prepreg with moderate thermal conducti ...
... heat flux is conducted into the cooler through an enlarged area of the dielectric. This high heat spreading effect is due to the excellent thermal coupling of the two copper layers by the microvia arrays. However, because of the thick dielectric – a 90 µm thick prepreg with moderate thermal conducti ...
Comparative Study of Rectangular, Trapezoidal and Parabolic
... Comparative study of Rectangular, Trapezoidal and parabolic shaped finned Heat sink 3.1PROBLEMS-SOLVING WITH FLUENT There are many decisions to be made before setting up the problem in the fluent software. Some of the decisions to be made can include whether the problem should be 2D or 3D, which ty ...
... Comparative study of Rectangular, Trapezoidal and parabolic shaped finned Heat sink 3.1PROBLEMS-SOLVING WITH FLUENT There are many decisions to be made before setting up the problem in the fluent software. Some of the decisions to be made can include whether the problem should be 2D or 3D, which ty ...
melting heat transfer in a nanofluid flow past a permeable
... The study of convective heat transfer in nanofluids is gaining a lot of attention. The nanofluids have many applications in the industries since materials of nanometer size have unique physical and chemical properties. Nanofluids are solid-liquid composite materials consisting of solid nanoparticles ...
... The study of convective heat transfer in nanofluids is gaining a lot of attention. The nanofluids have many applications in the industries since materials of nanometer size have unique physical and chemical properties. Nanofluids are solid-liquid composite materials consisting of solid nanoparticles ...
Influence of an insulating megaregolith on heat flow and crustal
... must be lower than the total surface heat loss (this is, the Urey ratio, Ur, must be lower ...
... must be lower than the total surface heat loss (this is, the Urey ratio, Ur, must be lower ...
Working fluid flow visualization in gravity heat pipe
... the structure will also have a high effective thermal conductance. One limitation of the basic thermosyphon is that in order for the condensate to be returned to the evaporator region by gravitational force, the evaporation section must be situated at the lowest point [2]. The amount of heat that ca ...
... the structure will also have a high effective thermal conductance. One limitation of the basic thermosyphon is that in order for the condensate to be returned to the evaporator region by gravitational force, the evaporation section must be situated at the lowest point [2]. The amount of heat that ca ...
Saimaa University of Applied Sciences Faculty of Technology, Lappeenranta
... demand for metal products, lightweight steel thin-walled structures offer a promising direction of development of civil engineering in Russia and worldwide. There are hundreds of manufacturing plants and design organizations in different regions of the country, which produce a wide range of products ...
... demand for metal products, lightweight steel thin-walled structures offer a promising direction of development of civil engineering in Russia and worldwide. There are hundreds of manufacturing plants and design organizations in different regions of the country, which produce a wide range of products ...
Dynamic Control of Radiative Surface Properties with Origami
... actuation [13] have been explored. Louvers have also been used for thermal control but macro versions are generally bulky and not suitable for small satellites [14]. Electrochromic surfaces are a promising technology that can vary their emissivity through a wide range by application of a small volta ...
... actuation [13] have been explored. Louvers have also been used for thermal control but macro versions are generally bulky and not suitable for small satellites [14]. Electrochromic surfaces are a promising technology that can vary their emissivity through a wide range by application of a small volta ...
Full-Text PDF
... rose to 1.5 wt % (Figure 1A). This was also indicated in Table 1 where the percentage enhancement in Cp decreases with a rise the concentration of CuO (10.48% for 0.1 wt %, 9.18% for 0.5 wt %, 8.49% for 1.0 wt % and 2.19% for 1.5 wt % CuO at 440 °C, see Table 1). The latter showed a detrimental beha ...
... rose to 1.5 wt % (Figure 1A). This was also indicated in Table 1 where the percentage enhancement in Cp decreases with a rise the concentration of CuO (10.48% for 0.1 wt %, 9.18% for 0.5 wt %, 8.49% for 1.0 wt % and 2.19% for 1.5 wt % CuO at 440 °C, see Table 1). The latter showed a detrimental beha ...
Full Text
... while the horizontal walls are kept adiabatic. The non-dimensional forms of the continuity, Darcy and energy equations are solved numerically. The power-law scheme is used for the convection-diffusion formulation in the non-uniform grid in both horizontal and vertical directions. It is observed that ...
... while the horizontal walls are kept adiabatic. The non-dimensional forms of the continuity, Darcy and energy equations are solved numerically. The power-law scheme is used for the convection-diffusion formulation in the non-uniform grid in both horizontal and vertical directions. It is observed that ...
Passive solar building design
In passive solar building design, windows, walls, and floors are made to collect, store, and distribute solar energy in the form of heat in the winter and reject solar heat in the summer. This is called passive solar design because, unlike active solar heating systems, it does not involve the use of mechanical and electrical devices.The key to design a passive solar building is to best take advantage of the local climate performing an accurate site analysis. Elements to be considered include window placement and size, and glazing type, thermal insulation, thermal mass, and shading. Passive solar design techniques can be applied most easily to new buildings, but existing buildings can be adapted or ""retrofitted"".