WebAir conditioning engineers use the psychometric chart for visualizing moist-air relations, predict changes in the environment and design the spaces for thermal comfort. ... Psychrometric chart describes the relationship of seven air properties namely dry-bulb temperature, wet-bulb temperatures, relative humidity, humidity ratio, specific volume ... WebNov 11, 2016 · Psychometric properties of the AIR Self-Determination Scale: the Chinese version (AIR SDS-C) for Chinese people with intellectual disabilities. P. K. S. Wong, ... The AIR SDS-C appears to be a valid and reliable scale. This study examined adult groups as well as student groups. The application of the scale can thus be extended to a wider ...
Air - Psychrometric Chart for Standard Atmospheric …
WebJul 19, 2016 · The Chinese version of the AIR (AIR-C) has shown acceptable levels of psychometric properties, and it is a reliable and valid instrument for measuring anxiety in Chinese COPD patients. As a disease-specific non-somatic anxiety measurement, it might be useful as a sensitive measure for measuring anxiety in Chinese COPD patients. coachman 208bhs apex nano
HVAC Psychrometry, Air Handling System and Duct Selection
Although the principles of psychrometry apply to any physical system consisting of gas-vapor mixtures, the most common system of interest is the mixture of water vapor and air, because of its application in heating, ventilation, and air-conditioning and meteorology. In human terms, our thermal comfortis in large … See more WebPsychometric chart. • The moisture content or specific humidity, ω kg moisture/kg dry air. Note that even under fairly extreme conditions (saturated air at 30 °C) the moisture content does not exceed 3% by weight. • The percentage saturation or relative humidity, φ. WebSep 30, 2016 · For saturated air, the dry-bulb, wet-bulb, and dew-point temperatures are identical. Psychrometric charts: Present moist air properties in a convenient form. They are used extensively in A-C applications. The psychrometric chart serves as a valuable aid in visualizing the A-C processes such as heating, cooling, and humidification. cal hendrick