Heat Illness – A Practical Primer
... of heat across a temperature gradient through physical contact, for example, placing ice packs in the axilla and groin. Convection is similar except heat is lost through the movement of liquids or gas, such as warm core blood carried to the skin’s surface or fanning the body. Radiation is a form of ...
... of heat across a temperature gradient through physical contact, for example, placing ice packs in the axilla and groin. Convection is similar except heat is lost through the movement of liquids or gas, such as warm core blood carried to the skin’s surface or fanning the body. Radiation is a form of ...
Flow boiling of ethanol/water binary mixture in a square microchannel
... microchannel with microcavities. Their study showed that two-phase flow heat transfer coefficient was strongly dependant on the molar fraction of the mixture, as well as on wall superheat. Moreover, they concluded that addition of ethanol into water significantly increased the CHF recorded with the ...
... microchannel with microcavities. Their study showed that two-phase flow heat transfer coefficient was strongly dependant on the molar fraction of the mixture, as well as on wall superheat. Moreover, they concluded that addition of ethanol into water significantly increased the CHF recorded with the ...
Heat-pulse propagation along nonequilibrium nanowires in
... the speed of propagation of thermal pulses in TM theory. In Sec. 3 we analyze the consequences of the temperature dependence of the propagation speeds on the shape of a heat pulse. Therein we also compare the predictions of the TM theory with those arising from a different theoretical proposal. In S ...
... the speed of propagation of thermal pulses in TM theory. In Sec. 3 we analyze the consequences of the temperature dependence of the propagation speeds on the shape of a heat pulse. Therein we also compare the predictions of the TM theory with those arising from a different theoretical proposal. In S ...
Simulation of intermittent transient cooling load characteristic in an academic
... Abstract— This paper aims to estimate intermittent transient cooling load characteristics in an academic building with large glazing area using TRNSYS. Simulation and experimental studies have been done in the past to estimate cooling load characteristic and to find strategies to reduce the energy u ...
... Abstract— This paper aims to estimate intermittent transient cooling load characteristics in an academic building with large glazing area using TRNSYS. Simulation and experimental studies have been done in the past to estimate cooling load characteristic and to find strategies to reduce the energy u ...
experimental comparison of four borehole heat exchangers
... meter by the secondary fluid is calculated for the down and up going channel of each collector using equation 1. The latter is immediately used in order to calculate the borehole thermal resistance Rb for each of the collector channels as well, assuming a temperature value for the borehole wall. Cho ...
... meter by the secondary fluid is calculated for the down and up going channel of each collector using equation 1. The latter is immediately used in order to calculate the borehole thermal resistance Rb for each of the collector channels as well, assuming a temperature value for the borehole wall. Cho ...
Nanoscale Heat Transfer using Phonon Boltzmann Transport Equation
... purpose [3-5]. The distribution function is a scalar quantity in the six-dimensional phase space (three space coordinates and three wavevector coordinates). The phonon BTE is also called an equation of phonon radiative transfer (EPRT) when the phonon distribution function is replaced with a phonon i ...
... purpose [3-5]. The distribution function is a scalar quantity in the six-dimensional phase space (three space coordinates and three wavevector coordinates). The phonon BTE is also called an equation of phonon radiative transfer (EPRT) when the phonon distribution function is replaced with a phonon i ...
Inducing Hypothermia in Neonates on Extracorporeal Membrane
... In light of this research, it might prove to be beneficial to pursue clinical hypothermia in extracorporeal membrane oxygenation (ECMO) cases where neurological impairment occurs in a significant portion of the population [5]. In ECMO cases, neurological damage maybe due to alteration of cerebral bl ...
... In light of this research, it might prove to be beneficial to pursue clinical hypothermia in extracorporeal membrane oxygenation (ECMO) cases where neurological impairment occurs in a significant portion of the population [5]. In ECMO cases, neurological damage maybe due to alteration of cerebral bl ...
OIF-PLUG-Thermal-01.0 – Thermal Management at the Faceplate White
... additional challenges since they must fit through a standard opening in the faceplate. This restriction severely limits the fin surface area and the effectiveness of heat spreading in the base when integrated heatsinks are used. For higher power density devices, heat transfer is insufficient to main ...
... additional challenges since they must fit through a standard opening in the faceplate. This restriction severely limits the fin surface area and the effectiveness of heat spreading in the base when integrated heatsinks are used. For higher power density devices, heat transfer is insufficient to main ...
Convective heat transfer for fluids passing through
... over 90%. Additionally, the sizes and the number of ‘windows’ between individual cells are sufficiently high to enable a relatively unobstructed flow of fluids through the cellular space. That reduces the loss of pressure and hence the energy required to pass the fluid through that structure. In cas ...
... over 90%. Additionally, the sizes and the number of ‘windows’ between individual cells are sufficiently high to enable a relatively unobstructed flow of fluids through the cellular space. That reduces the loss of pressure and hence the energy required to pass the fluid through that structure. In cas ...
Dynamic insulation
Dynamic insulation is a form of insulation where cool outside air flowing through the thermal insulation in the envelope of a building will pick up heat from the insulation fibres. Buildings can be designed to exploit this to reduce the transmission heat loss (U-value) and to provide pre-warmed, draft free air to interior spaces. This is known as dynamic insulation since the U-value is no longer constant for a given wall or roof construction but varies with the speed of the air flowing through the insulation (climate adaptive building shell). Dynamic insulation is different from breathing walls. The positive aspects of dynamic insulation need to be weighed against the more conventional approach to building design which is to create an airtight envelope and provide appropriate ventilation using either natural ventilation or mechanical ventilation with heat recovery. The air-tight approach to building envelope design, unlike dynamic insulation, results in a building envelope that provides a consistent performance in terms of heat loss and risk of interstitial condensation that is independent of wind speed and direction. Under certain wind conditions a dynamically insulated building can have a higher heat transmission loss than an air-tight building with the same thickness of insulation.