IHVE PSYCHROMETRIC CHART PDF

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Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. If you continue browsing the site, you agree to the use of cookies on this website. See our User Agreement and Privacy Policy. See our Privacy Policy and User Agreement for details. Published on May 1, Psychrometric Properties, Processes and Chart.

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Embeds 0 No embeds. No notes for slide. Psychrometry 1. Psychrometry Psychrometry is the Study of the properties of mixtures of air and water vapour. The term dry- bulb is customarily addedto temperature to distinguish it from wet-bulb and dewpoint temperature. The accuracy of a simple wet-bulb thermometer depends on how fast air passes over the bulb and how well the thermometer is shielded from the radiant temperature of its surroundings.

HUMIDITY Specific Humidity: Specific humidity is defined as the proportion of the mass of water vapour perunit mass of the moist air sample dry air plus the water vapour ; it is closely related to humidity ratio and always lower in value.

Absolute Humidity: Themass of water vaporper unit volume of air containing the water vapor. This quantity is also known as the water vapour density. Psychrometric Processes or Air conditioning Processes 1. Sensible Heating : It is addition of heat tomoist air without the addition of moisture.

It follows a constant humidity ratio line onthe psychrometric chart. Sensible Cooling: It is the removal ofheat from moist air without the removal ofmoisture.

It also follows a constant W on the psychrometric chart. Cooling and Dehumidifying: It is the removal moisture from moist air, it involves sensible and latent heat transfer. Psychrometry - Dehumidification Dehumidification by cooling —in cooling coils temp of air reduces and the saturation point dewpoint is reached. Dehumidification by Cooling Heating and Humidifying:It is the addition of heat and moisture to moist air, it also involves sensible and latent heat transfer.

Removing Sensible Heat and Moisture Sensible heat lost by air isconverted to latent heat in the added water vapor. Psychrometry — Climate Classification Climate Classification shows the various approximate zones of temperature and humidity on the psychrometric chart. You just clipped your first slide! Clipping is a handy way to collect important slides you want to go back to later. Now customize the name of a clipboard to store your clips. Visibility Others can see my Clipboard.

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Psychrometric Calculations

Dew-point temperature is the temperature at which the condensation of water vapor in a space begins for a given state of humidity and pressure as the temperature of the vapor is reduced. This is the temperature corresponding to saturation for a given absolute humidity at constant pressure. The water vapor in the air is either in the form of superheated steam or, when the air holds as much vapor as it can, in the form of saturated steam. The equation is. Specific humidity or humidity ratio, W, is defined as the ratio of the weight or mass of water vapor to the weight or mass of diy air. In a mixture of gases or of gasses and vapors, each gas or component occupies the entire.

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Professional Quality Psychrometric Calculator

Thermodynamic Properties of Humid Moist Air. Based on a real gas formulation Hyland and Wexler. Heating, Cooling, Mixing. Support for mobile platforms. Thermodynamic Properties of Moist Humid Air The site provides a feature rich, professional quality Psychrometric Calculator web application.

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