Hypothalamic thermosensitivity and adaptations for heat-storage behavior in three species of chipmunks (Eutamias) from different thermal environments

1978 ◽  
Vol 125 (2) ◽  
pp. 175-183 ◽  
Author(s):  
Mark A. Chappell ◽  
Ahmed V. Calvo ◽  
H. Craig Heller
Keyword(s):  
Heat Storage ◽  
Thermal Environments ◽  
Storage Behavior ◽  
Hypothalamic Thermosensitivity

The Prediction of Human Thermal Tolerance When Using a Ventilating Garment With an Antiexposure Suit

1960 ◽  
Vol 82 (3) ◽  
pp. 243-250
Author(s):  
J. W. Mc Cutchan
Keyword(s):  
Thermal Resistance ◽  
Thermal Tolerance ◽  
Heat Storage ◽  
Human Subjects ◽  
Physiological Responses ◽  
Cooling Power ◽  
Heart Rates ◽  
Thermal Environments ◽  
Tolerance Chart ◽  
Composite Indexes

The physiological responses of human subjects have been investigated in the thermal environments ranging from 120 to 240 deg F while wearing the MA-2 ventilating garment, an MK-IV exposure suit, and other garments comprising 2.15 clo2 of thermal resistance. The ventilating garment was given air inputs ranging from 2 to 14 cfm in volume, and from 50 to 90 F in temperature. The thermal responses of the subjects are shown graphically in terms of heat storage, heart rates, sweat rates, and composite indexes of these variables. The results of these experiments have been prepared in terms of an equation which is presented graphically as a nomograph. This nomograph predicts the cooling power of the MA-2 ventilating garment and is to be used in conjunction with the tolerance chart. The tolerance data, which were determined on steady exposures in a preheated chamber, are used to predict human tolerance for conditions where the air and wall temperatures are not constant.

Paper title: thermochemical heat storage behavior of ZnSO4.7H2O under low-temperature

2020 ◽  
Author(s):  
Ata Ur Rehman ◽  
Muhammad Khan ◽  
Zheng Maosheng ◽  
Ahsen Riaz Khan ◽  
Asif Hayat
Keyword(s):  
Low Temperature ◽  
Heat Storage ◽  
Thermochemical Heat Storage ◽  
Storage Behavior

Body heat storage in steers (Bos taurus) in fluctuating thermal environments

1983 ◽  
Vol 100 (2) ◽  
pp. 315-322 ◽  
Author(s):  
J. A. McLean ◽  
D. P. Stombaugh ◽  
A. J. Downie ◽  
C. A. Glasbey
Keyword(s):  
Body Temperature ◽  
Environmental Temperature ◽  
Heat Storage ◽  
Bos Taurus ◽  
Weighting Factor ◽  
The Body ◽  
Environmental Fluctuation ◽  
Mean Body Temperature ◽  
Thermal Environments ◽  
Body Heat

SUMMARYHeat stored in the body of cattle subjected to a daily 10 CC range of environmental temperature was measured by calorimetry and thermometry. The daily range of bodycore temperature of the animals was of the order of 0·5 °C but mean skin temperature cycled with a range of approximately 6 °C. Calorimetric estimates of changes in mean body temperature showed good agreement with thermometric estimates when core and mean body temperature changes were weighted in the ratio a: (1 – α) where α was found to be 0·85. This result is consistent with the findings of another study where cattle were subjected to abrupt changes in environmental temperature, the combined best estimate of a from the two studies being 0·86 ± 0·014 (s.E.). The 10 °C range of daily environmental fluctuation resulted in a daily variation of approximately 1 °C in mean body temperature, which is equivalent to the amount of heat produced by the animals every 40 min. It is suggested that a weighting factor α = 0·86 could be employed, using thermometry only, to estimate fluctuations in body heat storage which are likely to occur in animals subjected to fluctuating environmental conditions in the field.

Electron microscopy of niobium and tantalum hydrides

1978 ◽  
Vol 36 (1) ◽  
pp. 644-645
Author(s):  
T. Schober
Keyword(s):  
Electron Microscopy ◽  
Heat Storage ◽  
Measurement Techniques ◽  
Metal Hydrides ◽  
Detailed Understanding ◽  
Storage Devices ◽  
Unit Cells ◽  
Endothermic Reactions ◽  
Hydrogen Reactions ◽  
New Phase

Nb, Ta and V are prototype substances for the study of the endothermic reactions of H with metals. Such metal-hydrogen reactions have gained increased importance due to the application of metal-hydrides in hydrogen- und heat storage devices. Electron microscopy and diffraction were demonstrated to be excellent methods in the study of hydride morphologies and structures (1). - Figures 1 and 2 show the NbH and TaH phase diagrams (2,3,4). EM techniques have contributed substantially to the elucidation of the structures and domain configurations of phases β, ζ and ε (1,4). Precision length measurement techniques of distances in reciprocal space (5) recently led to a detailed understanding of the distortions of the unit cells of phases ζ and ε (4). In the same work (4) the existence of the new phase η was shown. It is stable near -68 °C. The sequence of transitions is thus below 70 %.

Latent heat storage for hot beverages

2019 ◽  
Vol 13 (3) ◽  
pp. 5653-5664
Author(s):  
M. S. M. Al-Jethelah ◽  
H. S. Dheyab ◽  
S. Khudhayer ◽  
T. K. Ibrahim ◽  
A. T. Al-Sammarraie
Keyword(s):  
Latent Heat ◽  
Food Industry ◽  
Heat Storage ◽  
Food Storage ◽  
Thermal Engineering ◽  
Engineering Applications ◽  
Latent Heat Storage ◽  
The Impact ◽  
Encapsulated Phase Change Material ◽  
Change Material

Latent heat storage has shown a great potential in many engineering applications. The utilization of latent heat storage has been extended from small scales to large scales of thermal engineering applications. In food industry, latent heat has been applied in food storage. Another potential application of latent heat storage is to maintain hot beverages at a reasonable drinking temperature for longer periods. In the present work, a numerical calculation was performed to investigate the impact of utilizing encapsulated phase change material PCM on the temperature of hot beverage. The PCM was encapsulated in rings inside the cup. The results showed that the encapsulated PCM reduced the coffee temperature to an acceptable temperature in shorter time. In addition, the PCM maintained the hot beverage temperature at an acceptable drinking temperature for rational time.

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