本文介绍了一种利用商用计算机图形系统绘制湿度图的方法。该方法还包括介绍湿度测量的基本方程，特别是大气各种热力学性质之间的相互关系。选择三个输入参数以定义图表的边界和比例。这些参数是大气压力、干球温度范围和湿度比上限。然后，由计算机程序根据输入参数确定湿球温度、焓和比体积的范围。绘制恒定湿相对湿度线的程序- 灯泡温度、焓和比体积通过使用商用计算机图形系统进行说明。此外，还构建了一个用于空调过程的显热比标尺。该方法可用于解决涉及基本HVACp过程的问题，从而使工科学生更好地理解应用热力学。单位:双引文:研讨会，ASHRAE交易，1988年，第94卷，pt。德克萨斯州达拉斯1号

A methodology is presented for plotting psychrometric charts by the use of a commercially available computer graphics system. This methodology also includes the presentation of the fundamental equations of psychrometrics, specifically the interrelationships between various thermodynamic properties of atmospheric air. Three entry parameters are selected in order to define the boundaries and scale of the chart. These parameters are the barometric pressure, the range of dry-bulb temperatures, and the upper limit for humidity ratio. The ranges of wet-bulb temperatures, enthalpies, and specific volumes are then determined by the computer program in accordance with the input parameters. Procedures for plotting lines of constant relative humidity wet-bulb temperature, enthalpy, and specific volume are illustrated by using a commercially available computer graphics system. A scale for sensible heat ratio is also constructed for use in air-conditioning processes. This method can be used to solve problems involving basic HVACp rocesses so that engineering students can better understand applied thermodynamics.Units: Dual