提供了一个项目的背景和说明，该项目旨在测试三种常用的炉装加湿器。其目的是确定可能对健康有害的颗粒物和微生物材料是否会进入管道系统，并最终进入占用空间。构建了一个模拟家庭强制空气加热系统的管道系统回路，并设计了一个测试协议。第一个测试系列只测量天然物质，最后一个测试使用已知的加标细菌试剂。每个加湿器连续运行90天，并对进水、加湿器内或通过加湿器的水、进气以及不同位置管道中的空气进行测试。 管道中的温度保持在120华氏度，湿度取决于进入的空气。没有证据表明颗粒或活微生物来自加湿器。关键词:加湿器、锅炉、测试、空气污染、室内、健康、细菌、颗粒、管道、房间、暖风、测量、温度、湿度、水。引文:研讨会，ASHRAE交易1993，第99卷，pt。1.

Provides the background and description of a project that was initiated to test three commonly used furnace-mount humidifiers. The object was to determine whether particles and microbiological materials, which might be deleterious to health, would find their way into ductwork and ultimately into occupied spaces. A ductwork loop was constructed that simulated a home forced-air heating system, and a test protocol was devised. The first test series measured only naturally occurring materials and the final test used a known spiked bacteriological agent. Each humidifier was operated continuously for 90 days and tests were taken of the incoming water, the water in or passing through the humidifier and the incoming air, and the air in the duct at various locations. Temperatures were maintained in ducts at 120 deg F and humidities were dependent upon the incoming air. There was no evidence that particles or viable microorganisms came from the humidifiers.KEYWORDS: humidifiers, boilers, testing, air pollution, indoor, health, bacteria, particles, ducts, rooms, warm air heating, measuring, temperature, humidity, water.