A Spot Climate Recorder

1956 ◽  
Vol 37 (4) ◽  
pp. 160-165 ◽  
Author(s):  
Herbert B. Schultz ◽  
Frederick A. Brooks
Keyword(s):  
Environmental Factors ◽  
Wind Velocity ◽  
Wind Direction ◽  
Agricultural Research ◽  
Economic Advantage ◽  
Storage Battery ◽  
Field Equipment ◽  
Meteorological Field ◽  
Increasing Demand ◽  
Current Drain

In agricultural research as well as in applied climatology as a whole, there is an increasing demand for portable meteorological field equipment capable of recording continuously more environmental factors than the conventional hygro-thermograph. The spot climate recorder described can register dry bulb, wet bulb, soil, and black globe temperatures, and wind direction and velocity on either daily or weekly charts, whichever is best for the climate survey. If desired, all these elements can be registered on one chart, but a set of two recorders has been found to be no more expensive and gives the economic advantage of making each useable separately. This is desirable for instance when a network of wind registering stations is needed (including 1 temperature each) but the complete record of moisture, radiation, etc. is sufficient at one station. The wind-recording circuits are designed for low-current drain on a 6-volt storage battery. Rather than draw on this battery to provide aspiration for the dry and wet-bulb thermometers, the wind velocity record is used to determine at which few hours the wet-bulb record may be unreliable.

Storage Battery Explosions: Heating and Jarring

1986 ◽  
Vol 3 (2) ◽  
Author(s):  
Harry S. Dixon
Keyword(s):  
High Rate ◽  
Storage Battery ◽  
High Current ◽  
Vapor Explosion ◽  
Popular Belief ◽  
Boiling Liquid ◽  
Localized Heating ◽  
A Cell ◽  
Current Drain

A previous paper entitled Storage Battery Explosions: Hydrogen or BLEVE.? showed that contrary to popular belief storage battery explosions concurrent with or following a high rate of discharge were BLEVE (Boiling Liquid Expanding Vapor Explosion) explosions rather than hydrogen. The bases of that paper were the explosions of two batteries. Because of low liquid in a cell there had been excessive localized heating, actually superheating, between the plates. However, other than the explosion resulting from alleged superheating there was no other indication nor evidence of heating. This paper describes a BLEVE explosion that resulted simply from jarring after the overheating of the battery which had been subjected to high current drain in attempting to start the automobile. It is referred to as the Salaam case.

scholarly journals EFFECT OF WIND VELOCITY AND WIND DIRECTION ON THERMAL INSULATION VALUES OF CLOTHING ENSEMBLES BY USING THERMAL MANIKIN

2007 ◽  
Vol 72 (621) ◽  
pp. 23-28 ◽  
Author(s):  
Shinichi WATANABE ◽  
Tetsumi HORIKOSHI ◽  
Tomoya KANEKO ◽  
Yuji UNO ◽  
Jin ISHII ◽  
...  
Keyword(s):  
Wind Velocity ◽  
Thermal Insulation ◽  
Wind Direction ◽  
Thermal Manikin

scholarly journals The effect of wind direction on drift control by snow fences

2001 ◽  
Vol 32 ◽  
pp. 159-162 ◽  
Author(s):  
Yukari Takeuchi ◽  
Shun’ichi Kobayashi ◽  
Takeshi Sato ◽  
Kaoru Izumi ◽  
Kenji Kosugi ◽  
...  
Keyword(s):  
Wind Tunnel ◽  
Wind Velocity ◽  
Wind Direction ◽  
The Other ◽  
First Case ◽  
Snow Fence ◽  
Snow Fences ◽  
Set Up ◽  
Cold Wind ◽  
Drift Control

AbstractSnowdrifting processes and the wind-velocity profiles around a collector and a blower snow fence were investigated in a cold wind tunnel. The purpose was to ascertain the effect of wind direction on drift control by snow fences. Three different cases were studied for both types of snow fence, and the resultant snowdrifts were compared. In the first case, the snow fence was perpendicular to the wind direction. In the second and third cases, it was tilted by 30° and 45°. When the collector snow fence was tilted, the amounts of snowdrift were much less than when the fence was perpendicular to the wind direction, because the area with low wind velocity was reduced to half behind the tilted fence. On the other hand, the blowing effect of the blower snow fence increased when it was set up at an angle to the wind direction. It is necessary to investigate the position where the blown snow is deposited by the tilted blower snow fence.

scholarly journals Novel strategy for wide-range wind vector measurement using the hybrid CP/CTD heating mode and sequential measuring and correcting

PLoS ONE ◽  
2021 ◽  
Vol 16 (7) ◽  
pp. e0254256
Author(s):  
Tian Wang ◽  
Yunbo Shi ◽  
Xiaoyu Yu ◽  
Guangdong Lan ◽  
Congning Liu
Keyword(s):  
Wind Velocity ◽  
Wind Direction ◽  
High Velocity ◽  
Measurement Instrument ◽  
Wind Vector ◽  
Velocity Range ◽  
Vector Measurement ◽  
Airflow Distribution ◽  
Wide Range ◽  
Novel Strategy

To improve the performance of wind sensors in the high velocity range, this paper proposes a wind measurement strategy for thermal wind velocity sensors that combines the constant power and constant temperature difference driving modes of the heating element. Based on the airflow distribution characteristics from fluid dynamics, sequential measurement and correction is proposed as a method of measuring wind direction. In addition, a wind velocity and direction measurement instrument was developed using the above-mentioned approaches. The test results showed that the proposed instrument can obtain large dynamic wind velocity measurements from 0 to 60 m/s. The wind velocity measurement accuracy was ±0.5 m/s in the common velocity range of 0–20 m/s and ±1 m/s in the high velocity range of 20–60 m/s. The wind direction accuracy was ±3° throughout the 360° range. The proposed approaches and instrument are not only practical but also capable of meeting the requirements of wide-range and large dynamic wind vector measurement applications.

scholarly journals Analysis of Environmental Factors’ Impact on Donkeys’ Colostrum Quality

2018 ◽  
Author(s):  
Zamfir Marchiș ◽  
Antonia Odagiu ◽  
Aurelia Coroian ◽  
Ioan Oroian ◽  
Manuela Mîrza ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Environmental Factors ◽  
Protein Content ◽  
Wind Velocity ◽  
Experimental Period ◽  
Negative Influence ◽  
Positive Influence ◽  
Human Colostrum ◽  
Positive Correlations ◽  
Complex Influence

Colostrum is a natural product, issued by both mammals and humans in first week of lactation. Among different species, donkey colostrum is considered as having, besides a valuable composition in nutrients and immune factors, an outstanding similitude with human colostrum. In this context, and taking into account the scarcity of available data concerning the interaction between climate factors and colostrum quality, a trial was conducted aiming to identify the possible influence of environmental factors on donkey colostrum nutritional traits. A stock of 16 jennies from 2 farms located in the County of Cluj, during a 7 days postpartum period was analyzed. During experimental period the daily temperature, humidity, and wind velocity data were collected. Strong positive correlations may be reported between fat and lactose, and fat and protein respectively, while moderate to strong correlation is emphasized between lactose and protein content of donkey colostrum. Testing the influence of environmental temperature, relative humidity, and wind velocity influence upon nutritional content of donkey colostrum, results the neglectable influence of the wind velocity, the negative influence of the heat stress upon all studied colostrum components, and complex influence of relative humidity, which has positive influence on fat and lactose increase when it increases, while its increase has negative influence on protein content of donkey colostrum.

scholarly journals Measurements of Wind Velocity and Wind Direction (2)

1982 ◽  
Vol 37 (4) ◽  
pp. 339-341
Author(s):  
Taichi Maki ◽  
Kinken Makino
Keyword(s):  
Wind Velocity ◽  
Wind Direction
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