Protection against cold in prehospital care: thermal insulation
... heat loss from the airways. Sweating and evaporative heat loss from the skin often is minimal in cold environments, but could be considerable in case of wet clothing or skin due to immersion or previous physical activity. In addition, if the injured or ill person is lying on the ground or is in dire ...
... heat loss from the airways. Sweating and evaporative heat loss from the skin often is minimal in cold environments, but could be considerable in case of wet clothing or skin due to immersion or previous physical activity. In addition, if the injured or ill person is lying on the ground or is in dire ...
Review on graphite foam as thermal material for heat exchangers
... for aluminum 6061 and 400 W/(m.K) for copper). However, when the density is considered, the specific thermal conductivity of aluminum or copper (thermal conductivity divided by specific gravity) is only 54 and 45 W/(m.K), respectively. Thus, when the weight is a significant factor, it is necessary t ...
... for aluminum 6061 and 400 W/(m.K) for copper). However, when the density is considered, the specific thermal conductivity of aluminum or copper (thermal conductivity divided by specific gravity) is only 54 and 45 W/(m.K), respectively. Thus, when the weight is a significant factor, it is necessary t ...
thermal and moisture control in insulated assemblies - U
... Low-emittance windows are exemplary of the high thermal resistance presented by a narrow space filled with a gas with very low thermal conductivity and with low-emittance surfaces. To obtain high thermal resistance with reflective insulation, a series of multiple air layers bounded by reflective sur ...
... Low-emittance windows are exemplary of the high thermal resistance presented by a narrow space filled with a gas with very low thermal conductivity and with low-emittance surfaces. To obtain high thermal resistance with reflective insulation, a series of multiple air layers bounded by reflective sur ...
on fouling in heat exchangers - abuad lms
... specifications up to shut down for cleaning, the additional pressure drop expected due to fouling, and the choice of appropriate construction materials. The designers must also consider the mechanical arrangements that may be necessary for fouling inspection or fouling removal and cleaning. Fouling ...
... specifications up to shut down for cleaning, the additional pressure drop expected due to fouling, and the choice of appropriate construction materials. The designers must also consider the mechanical arrangements that may be necessary for fouling inspection or fouling removal and cleaning. Fouling ...
Deep-Seated Oceanic Heat Flow, Heat Deficits, and Hydrothermal
... a clear understanding of each process. The purpose of this chapter is (a) to review models used to predict lithospheric or deep-seated heat flow in oceanic lithosphere, (b) to show how observations are combined with model predictions of heat flow to estimate the magnitude of sea floor hydrothermal c ...
... a clear understanding of each process. The purpose of this chapter is (a) to review models used to predict lithospheric or deep-seated heat flow in oceanic lithosphere, (b) to show how observations are combined with model predictions of heat flow to estimate the magnitude of sea floor hydrothermal c ...
2014a Kirsch IGTACE
... can take numerous forms but in areas where structural support, in addition to high heat removal is necessary, pin fin arrays are commonly employed. Pin fins in this paper refer to pins that extend across the entire channel; note that many also refer to these features as pedestals. The addition of pi ...
... can take numerous forms but in areas where structural support, in addition to high heat removal is necessary, pin fin arrays are commonly employed. Pin fins in this paper refer to pins that extend across the entire channel; note that many also refer to these features as pedestals. The addition of pi ...
Overheating in new homes
... presented and analysed as case studies. The report also discusses what parameters might be used in the definition of overheating including possible threshold temperature levels. Guidance on the requirements for reducing overheating is also presented and discussed. There is increasing evidence that n ...
... presented and analysed as case studies. The report also discusses what parameters might be used in the definition of overheating including possible threshold temperature levels. Guidance on the requirements for reducing overheating is also presented and discussed. There is increasing evidence that n ...
Steam-Water Relative Permeability
... g/tonne (Iceland) to about 250 000 g/tonne (Salton Sea). These chemicals are dissolved in the water under conditions of elevated temperature and pressure. During exploitation of the field, the fluid is brought to the surface and heat is extracted in one of two ways. Either the heat is transferred to ...
... g/tonne (Iceland) to about 250 000 g/tonne (Salton Sea). These chemicals are dissolved in the water under conditions of elevated temperature and pressure. During exploitation of the field, the fluid is brought to the surface and heat is extracted in one of two ways. Either the heat is transferred to ...
monitored field performance of conventional roofing assemblies
... within each assembly for the following purposes (Not all of the sensor data are covered at this time within this paper.): • Temperature of the following using thermistors: exterior air temperature, cap sheet (between cap and base sheet to be protected from torch and weather), top of insulation laye ...
... within each assembly for the following purposes (Not all of the sensor data are covered at this time within this paper.): • Temperature of the following using thermistors: exterior air temperature, cap sheet (between cap and base sheet to be protected from torch and weather), top of insulation laye ...
30 European Space Thermal Analysis Workshop
... MLI performance is measured with standardized test setups in a thermal vacuum chamber. The MLI specimen encloses a heater plate with controlled temperature and known heat output. The heater plate with the MLI wrapping is surrounded by a thermal shroud with controlled temperature. The thermal perform ...
... MLI performance is measured with standardized test setups in a thermal vacuum chamber. The MLI specimen encloses a heater plate with controlled temperature and known heat output. The heater plate with the MLI wrapping is surrounded by a thermal shroud with controlled temperature. The thermal perform ...
The Regulation of Body Temperature
... freezes, ice crystals consisting of pure water form, so that all dissolved substances in the solution are left in the unfrozen liquid. Therefore, as more ice forms, the remaining liquid becomes more and more concentrated. Freezing damages cells through two mechanisms. Ice crystals probably injure th ...
... freezes, ice crystals consisting of pure water form, so that all dissolved substances in the solution are left in the unfrozen liquid. Therefore, as more ice forms, the remaining liquid becomes more and more concentrated. Freezing damages cells through two mechanisms. Ice crystals probably injure th ...
REFRACTORY ENGINEERING STRUCTURES
... To design a lining, which will have the longest lifespan in regards to the economic budget of a given country. How to communicate with the teacher: At the beginning of the semester the teacher requires entering a semestral work project on metallurical plant lining design. The design procedure will b ...
... To design a lining, which will have the longest lifespan in regards to the economic budget of a given country. How to communicate with the teacher: At the beginning of the semester the teacher requires entering a semestral work project on metallurical plant lining design. The design procedure will b ...
Design Guide Solutions to Prevent Thermal
... Improving the thermal performance of a building enclosure and minimizing the energy use of buildings has received increasing focus in the drive for sustainability and energy security. We have seen the adoption of increasingly stringent enclosure thermal performance requirements in building codes, AS ...
... Improving the thermal performance of a building enclosure and minimizing the energy use of buildings has received increasing focus in the drive for sustainability and energy security. We have seen the adoption of increasingly stringent enclosure thermal performance requirements in building codes, AS ...
C041
... Kattan et al. (1998a, 1998b, 1998c) conducted smooth tube experimentation for flow boiling of several refrigerants, including refrigerant R-134a. Data from Kattan et al.’s work shows that the heat transfer coefficient will continue to increase with vapor quality, but will show a sudden drop at a qua ...
... Kattan et al. (1998a, 1998b, 1998c) conducted smooth tube experimentation for flow boiling of several refrigerants, including refrigerant R-134a. Data from Kattan et al.’s work shows that the heat transfer coefficient will continue to increase with vapor quality, but will show a sudden drop at a qua ...
Full Text
... matter if once can reduce cooling load sufficient lomaintain constant temperature of (26℃ ) in a building , so many researches focus their attention in this field. One of the main advantages of reducing thermal conductivity is that a thin wall of low thermal conductivity can replace thick wall where ...
... matter if once can reduce cooling load sufficient lomaintain constant temperature of (26℃ ) in a building , so many researches focus their attention in this field. One of the main advantages of reducing thermal conductivity is that a thin wall of low thermal conductivity can replace thick wall where ...
Chen2011-Entransy_a_novel_theory_in_heat_transfer+
... the heat transfer process, and the thermal engineering has for a long time recognized the huge potential for conserving energy and decreasing CO2 release so as to reduce the global warming effect through heat transfer efficiency techniques (Bergles, 1988, 1997; Webb, 1994; Zimparov, 2002). In additi ...
... the heat transfer process, and the thermal engineering has for a long time recognized the huge potential for conserving energy and decreasing CO2 release so as to reduce the global warming effect through heat transfer efficiency techniques (Bergles, 1988, 1997; Webb, 1994; Zimparov, 2002). In additi ...
Feedbacks of sedimentation on crustal heat flow: New
... challenging not in the least due to the various feedback mechanisms between the basin and lithosphere processes.This study explores two main feedbacks, sediment blanketing and thinning of sediments during lithospheric stretching, in a series of synthetic models and a reconstruction case study from t ...
... challenging not in the least due to the various feedback mechanisms between the basin and lithosphere processes.This study explores two main feedbacks, sediment blanketing and thinning of sediments during lithospheric stretching, in a series of synthetic models and a reconstruction case study from t ...
Influence of natural convection in a porous medium when producing
... Figure 1. Cross section of the porous medium and the outer pipe of the borehole facing layer 2. Layer 1, layer 2, and layer 3 have heights h1 ; h2 , and h3, respectively. intermediate-depth system of 1000–3000 m, the temperature gradient model is most likely the preferred model as the initial temper ...
... Figure 1. Cross section of the porous medium and the outer pipe of the borehole facing layer 2. Layer 1, layer 2, and layer 3 have heights h1 ; h2 , and h3, respectively. intermediate-depth system of 1000–3000 m, the temperature gradient model is most likely the preferred model as the initial temper ...
HEATING SYSTEM FOR A PASSIVE HOUSE IN FINLAND Tatiana Dzhigit
... In this thesis work a passive house situated in Finland is examined. The aim of this work is to compare these systems and decide which one suits best to the passive house with cold climate conditions of Finland. The comparison is made by the economic criteria. The study consists of the theoretical p ...
... In this thesis work a passive house situated in Finland is examined. The aim of this work is to compare these systems and decide which one suits best to the passive house with cold climate conditions of Finland. The comparison is made by the economic criteria. The study consists of the theoretical p ...
Transient geotherms in Archean continental lithosphere: New
... where T is the temperature, t is the function of time, z is the depth, and k is the thermal diffusivity. CP, which is the heat capacity, and r, which is the density, are taken to be constant in the whole lithosphere. Ai (t) represents in situ heat production. We do not account for the temperature de ...
... where T is the temperature, t is the function of time, z is the depth, and k is the thermal diffusivity. CP, which is the heat capacity, and r, which is the density, are taken to be constant in the whole lithosphere. Ai (t) represents in situ heat production. We do not account for the temperature de ...
Heat pump
... are present in the air, the rate of frost deposit may be about three times as great as predicted from psychrometric analysis. ...
... are present in the air, the rate of frost deposit may be about three times as great as predicted from psychrometric analysis. ...
C121
... flat tube with triangular or rectangular passages of 1–2.5 mm hydraulic diameter. Still smaller passages are being applied in condenser applications, 25-mm or more wide, and length dependent on the refrigerant and operating conditions. These heat exchangers are generally employed in refrigerant-to-a ...
... flat tube with triangular or rectangular passages of 1–2.5 mm hydraulic diameter. Still smaller passages are being applied in condenser applications, 25-mm or more wide, and length dependent on the refrigerant and operating conditions. These heat exchangers are generally employed in refrigerant-to-a ...
Review of biomaterial thermal property
... It is well accepted in cryobiology that the temperature history and cooling rates experienced in biomaterials during freezing procedures correlate strongly with biological outcome. Therefore, heat transfer measurement and prediction in the cryogenic regime is central to the field. Although direct mea ...
... It is well accepted in cryobiology that the temperature history and cooling rates experienced in biomaterials during freezing procedures correlate strongly with biological outcome. Therefore, heat transfer measurement and prediction in the cryogenic regime is central to the field. Although direct mea ...
Apparent Latent Heat of Evaporation from Clothing
... Three custom-made outer garments were used (Fig. 3), identical in design and production, but of either impermeable (IMP), semipermeable (SEMI), or permeable (PERM) material, providing three levels of vapor permeability (Table 1). Though not essential to the testing, an attempt was made to match the ...
... Three custom-made outer garments were used (Fig. 3), identical in design and production, but of either impermeable (IMP), semipermeable (SEMI), or permeable (PERM) material, providing three levels of vapor permeability (Table 1). Though not essential to the testing, an attempt was made to match the ...
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 ...
Space Shuttle thermal protection system
The Space Shuttle thermal protection system (TPS) is the barrier that protected the Space Shuttle Orbiter during the searing 1,650 °C (3,000 °F) heat of atmospheric reentry. A secondary goal was to protect from the heat and cold of space while on orbit.