This article focuses on evaporation as a continuous process, in which the feed and product streams are continuous and their concentrations remain constant. This process is commonly referred to as water distillation, although the process is more akin to a thermally driven liquid-solids separation operation.Įvaporation may be carried out as a batch or continuous process. A common exception is the evaporation of solutions with a high mineral content, where the vapor is condensed as the product and the concentrated brine is discarded. Evaporation also produces a higher concentration of solids than other methods of concentration ( Figure 1) (2).Įvaporation differs from distillation in that the concentrated solution, rather than the condensed evaporate, is typically the valuable product. This combination of processes is economically attractive because high-efficiency evaporation is significantly less costly than drying and other methods of removing water (1). The combination of evaporation and spray drying is often used to make powdered products, such as powdered milk. Evaporation can be used as the initial step in producing a dried product if the liquid concentrate then undergoes a drying process such as spray drying. Evaporation as a method of concentration can produce solids contents that range from 0% to as much as 92% with scraped surface evaporators (used in select applications).Įvaporation differs from dehydration and drying in that the product of evaporation is a concentrated liquid, not a solid. Helps WooCommerce by creating an unique code for each customer so that it knows where to find the cart data in the database for each customer.▲ Figure 1. Helps WooCommerce determine when cart contents/data changes. Used to store API results for better performance Used to track consent and privacy settings related to HubSpot. Used to measure the effectiveness of our marketing ads and campaigns. Used to throttle request rate of Google Analytics Used to distinguish users for Google Analytics Used to track clicks and submissions that come through Facebook and Facebook ads. Used to remember if user viewed the cookie policy Used to preserve cookie consent answer for non-necessary cookies Used to preserve cookie consent answer for necessary cookies Used by CloudFlare service for rate limiting
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You will use the results to predict, and then measure, the temperature change for several other liquids. In this experiment, you will study temperature changes caused by the evaporation of several liquids and relate the temperature changes to the strength of intermolecular forces of attraction. The magnitude of a temperature decrease is, like viscosity and boiling temperature, related to the strength of intermolecular forces of attraction. This evaporation is an endothermic process that results in a temperature decrease. Evaporation occurs when the probe is removed from the liquid’s container.
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In this experiment, Temperature Probes are placed in various liquids.