Conclusions Exposure to low ambient temperature within several hours deep coma (defined as a score of 3–5 on the Glasgow coma scale.
Citation: Zheng D, Arima H, Sato S, Gasparrini A, Heeley E, Delcourt C, et al. (2016) Low Ambient Temperature and Intracerebral Hemorrhage: The INTERACT2 Study. PLoS ONE 11(2): e0149040. https://doi.org/10.1371/journal.pone.0149040.
Affiliation Department of Neurology, Peking University First Hospital, Beijing, China.
Our case-crossover model with control periods stratified by calendar month inherently adjusted for potential confounders, such as slow time varying individual characteristics, time of the day, day of the week, and seasonality.
Technically, subcooling is defined as the difference between the measured liquid As the ambient temperature increases, less heat can be rejected from the The low condenser split is a reflection of these problems.
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Condenser splits can range from 10˚ to 30˚ depending on whether the condensing unit is a standard-, mid-, or high-efficiency condensing unit. The condensing temperature in any system is obtained from the condensing pressure using a pressure/temperature chart. The higher the efficiency, the more coil surface area there will be, thus the lower the condenser split will be. For the balance of this article, I will deal with a standard efficiency condenser that normally runs a 20-30˚ split.
These are designed to regulate condenser liquid pressure at low outdoor ambient temperatures by controlling the airflow over the condenser.
The compressors or mechanical cooling could be “locked out” through a thermostat or “klixon” type switch so it cannot run below a pre-set temperature. This would allow cool outside air to be used to cool the space below 50 degrees. Economizers on packaged equipment are a great and “economical” way to provide cooling below the applicaion limitiations of the equipment. On light commercial (non-process cooling) applications, one solution would be to install an Economizer on a packaged roof top unit.
For information on specific type low ambient controllers you can go to your distributor or you can check one out at: http://www.hoffmancontrols.com/pages/816-10DH.htm.
One other very important thing to mention is, if you are going to do low ambient cooling on any piece of equipment, be sure it has a functioning crank case heater on the compressor.
Define ambient temperature. ambient temperature synonyms, ambient temperature would be unpredictable at very high and very low ambient temperatures.
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What exactly does a low ambient temp control(for condenser fan motor)protect against? The low ambient control cycles the fan when the outdoor temperature drops. If you were to run the unit at lo outdoor temps the result would be a very lo Evap temp and pressure which would.
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