PPT-Evaporation

Introduction The objective of evaporation is to concentrate a solution consisting of a nonvolatile solute and a volatile solvent In the overwhelming majority of evaporations the solvent is water. To relate the boiling point of water to its vapor pressure . Objectives. A. . Evaporation and Vapor Pressure . Vaporization or evaporation . Endothermic . A. . Evaporation and Vapor Pressure . Amount of liquid first decreases then becomes constant . By J. With EVAPORATION By TOR STUDIES GEOLOGICAL An the // W^estern UNITED Implementing a Soil Water . Oxygen . Isotope Model in . Matlab. Erik . Oerter. EPS 209. 27 April 2011. Project Motivation:. Soil Water Oxygen Isotopes. Soil Water originates as meteoric water, preserving the isotopic signature of precipitation. Evapotranspiration. P. = Q + . ET. + G + . Δ. S. Evaporation. Transfer of H. 2. O from liquid to vapor phase. Diffusive process driven by . Saturation (vapor density) gradient ~ (. r. s. – . r. Evapotranspiration or ET. 62% of precipitation that falls on the continents is evaporated. Understanding and predicting climate change. Q=P-ET. P-ET is the water available for use. ET "loss" supports ecosystems and agriculture. Sun warms ocean water causing it to EVAPORATE. Water vapor CONDENSES to form clouds. Clouds become very heavy before beginning to PRECIPITATE. Precipitation collects in rivers, lakes, and oceans. The sun warms ocean water…. ~A short lived induced dipole . dipole. attraction . between atoms that don’t normally have a dipole moment.. An orbital is an area of probability of an electron. . The electron does not have a uniform motion, at least we don’t think it does. We don’t know what the motion of an electron is. Daily Operations and Accounting. Daily estimates are used for operations and accounting at certain reservoirs, but not all. Estimates are typically based on pan evaporation measurements or reference evapotranspiration. SIAM Numerical Combustion ‘17. April 3, 2017. Orlando, FL. Pavan. B. . Govindaraju. Matthias . Ihme. Special thanks . to . Lucas . Esclapez. , . Thomas . Jaravel. and Alessandro . Stagni. and CRECK Modeling Group in POLIMI. David Tarboton. (Richard Peralta today). Overview. Handouts. Syllabus. Schedule. Student Information Sheet. Homework 1. Web: . http://www.engineering.usu.edu/dtarb/cee3430. . Outline for today. Review Syllabus and Schedule. David Tarboton . Utah State University. dtarb@usu.edu. 435-797-3172. Outline. Lake level fluctuations. Water Budget. Precipitation. Streamflow. Evaporation. Sensitivity. Salinity. Modeling . integrated water and total salt (not individual minerals). A process whereby liquid water is . converted to water vapour. and . removed from the vapour surface.. Evaporation consists of 2 components i.e. The energy component and the aerodynamic component. The energy component is responsible conversion of liquid water to water vapour. Rotary Evaporation. Hazard. Control. Frost bite. Wear insulated gloves when handling dry . ice. Chemical spills. Secure the clamp on the collection . flask,. and secure the bump trap. Always . wear PPE. “Net rate of vapor transport to the atmosphere”. Reverse process of precipitation. Evaporation considered to be a problem for reservoirs storage on one hand may prove very valuable on the other hand .