Results 221 to 230 of about 211,149 (265)
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Relativistic heat engines and efficiency
Physics Letters A, 1996zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Reflux heat pipes as components in heat exchangers for efficient heat recovery
Journal of Heat Recovery Systems, 1980With the r&d work carried out an attempt was made to obtain performance data to subsequently generate analysis and design tools for gravity-supported heat pipes (reflux heat pipes) and thermosyphons. With an extended experimental program the performance limitation of screen-wick heat pipes has been determined as a function of various heat pipe ...
M. Groll, H. Nguyen-Chi, H. Krähling
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Journal of Heat Transfer, 2006
This paper provides the solution to the problem of defining thermal efficiency for heat exchangers based on the second law of thermodynamics. It is shown that corresponding to each actual heat exchanger, there is an ideal heat exchanger that is a balanced counter-flow heat exchanger.
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This paper provides the solution to the problem of defining thermal efficiency for heat exchangers based on the second law of thermodynamics. It is shown that corresponding to each actual heat exchanger, there is an ideal heat exchanger that is a balanced counter-flow heat exchanger.
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Filled Heat Efficient Ceramics
Key Engineering Materials, 2021The increase of thermo-physical properties of masonry made of ceramic burnt products is possible through the use of heat-efficient ceramics and, in particular, porous building tiles. The use of combustible additives or foaming technology is related to increased energy costs and difficulties in obtaining products with uniformly distributed porosity.The ...
Alexey D. Zhukov +3 more
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Localized Heating for Building Energy Efficiency
2013 26th International Conference on VLSI Design and 2013 12th International Conference on Embedded Systems, 2013Commercial and residential buildings account for a large share of any country's energy consumption (e.g., 40% of total energy consumption in the United States). Within buildings, a major portion of the expended energy is used to provide heating and cooling. However, most buildings are heated and cooled regardless of the occupants' locations, presenting
Jun Wei Chuah +3 more
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Efficient heating with a controlled microwave field
Review of Scientific Instruments, 2011To uncover the intriguing non-thermal microwave effect, an experiment was conducted using an amplifier rather than an oscillator as the radiation source, which was injected into an applicator with strong electromagnetic field enhancement. The characteristics of the applicator are discussed and the enhancement of the microwave field is illustrated and ...
T H, Chang +5 more
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Science, 2019
Industrial Catalysis Large-scale production of hydrogen through steam reforming directly produces CO2 as a side product. In addition, the heating of reactors through fossil-fuel burning contributes further CO2 emissions. One problem is that the catalyst bed is heated unevenly, which renders much of the catalyst effectively inactive.
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Industrial Catalysis Large-scale production of hydrogen through steam reforming directly produces CO2 as a side product. In addition, the heating of reactors through fossil-fuel burning contributes further CO2 emissions. One problem is that the catalyst bed is heated unevenly, which renders much of the catalyst effectively inactive.
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Heat transfer efficiency of range units
Electrical Engineering, 1937Surface units of electric ranges have various efficiencies of heat transfer according to the design of the unit. Results of a study made with bright- and black-bottomed utensils are reported in this prize-winning student paper.
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Electric heating for high efficiency
Electronics and Power, 1984Britain has not been hit as hard as many countries by the oil crises since 1973 but it is still vital that British managers carefully consider all the available energy sources. Although electricity has a reputation for being expensive, its high utilisation efficiency means that for certain applications it is the most economical solution.
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