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Image: iRunFar/Meghan Hicks We Are Inefficient: The Basics of Humans and HeatĮnergetically, humans are inefficient creatures.
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Pam Smith using the mid-cooling strategies of ice in her hat, ice in her neck bandana, and keeping her white cotton shirt wet while on her way to winning the 2013 Western States 100. Thus, you might be wondering, Can we really learn from our shorter-distance sistren and brethren? The answer is, yes, with some added nuances, we can take a lot away from the research conducted in the field and in the laboratory on our road- and track-running counterparts. We trail and ultrarunners compete for much longer than Olympics events. Tokyo 2020 will likely be the hottest Olympics on record, and tricks to keep athletes cool before and while they perform might mean the difference between a medal or no medal. With the 2020 Summer Olympics in the hot climate of Tokyo, Japan right around the corner, physiologists and national sport governing bodies are scrambling. What is really cool (literally) about this area of research is that a ton of it is happening right this second. Our ultimate goal with this article is to relieve the stress you might feel when planning for a hot race. We’ll talk about which cooling strategies currently exist, why they work, and how you can effectively apply them in your race-day strategy. Indeed, our worries are based on a rational understanding of heat’s negative effects on athletic performance and the discomfort it creates.īut is impending doom really on the horizon? The answer is no! A number of science-backed strategies exist for getting cool before you race and staying cool once the gun goes off. Running in extreme temperatures takes its toll on all the human body, and can truly make ultrarunning a battle of attrition. Calculation speeds are significantly improved with the 64-bit version.It’s that time of year where my coaching-email inbox is flooded with athletes worried about upcoming hot-weather races.
#COOLPACK FLUIDES MIXURE UPGRADE#
If you have previously purchased the EES_REFPROP interface and are using the 64-bit version of EES, you may wish to upgrade to the 64-bit EES_REFPROP interface. A 64-bit version of EES is available and it requires 64-bit DLLs. The standard EES_REFPROP interface is a 32-bit dynamic link library (DLL) that interfaces with the 32-bit REFPROP program. The $REFERENCE directive in EES (version 10.364 and newer) can be used to set the reference state for specific enthalpy and entropy values provided by the REFROP program. The $ConvertEESREFPROPUnits directive in EES (version 10.119 and newer) provides automatic unit conversion of the inputs to and outputs from the EES_REFPROP interface to the unit system set in the EES program. Click here to view the EES_REFPROP user instructions.
#COOLPACK FLUIDES MIXURE LICENSE#
If, for example, an EES 5-user license is in use, a 5-user EES_REFPROP interface is required. The number of users for the EES_REFPROP interface must match the number of users for the EES license. Note that the EES_REFPROP interface is paired to an EES license and it will only operate with that license. Single and multiple-user licenses for the EES_REFPROP interface can be ordered.
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If you are involved in modeling refrigeration systems that use property information not included in EES, you will find the NIST REFPROP program and the EES_REFPROP interface to be of considerable interest.
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Transport properties as well as thermodynamic properties are provided in all fluid regimes, including compressed liquid and near critical states.Īn interface has been developed for REFPROP that allows the NIST property data base to be used with the equation-solving and other features of EES. REFPROP uses the most advanced methods for estimating property data. REFPROP also provides high accuracy data for mixtures such as ammonia-water and most organic refrigeration mixtures. Included in the database are the "natural" refrigerants, carbon dioxide, ammonia, propane, isobutane and other hydrocarbons. The National Institute of Standards and Technology (NIST) has developed REFPROP (also called NIST Standard Reference Database 23), which provides high accuracy property data for pure refrigerants and refrigerant mixtures. Click here to view a list of the fluids for which property data are available in EES. EES provides properties for many pure fluids and some refrigerant mixtures such as R407C, R410A, R449A, R450A.