A steady-state calorimetry method to measure the ventilation rate in an airspace
- Univ. of Saskatchewan, Saskatoon (Canada). Dept. of Agricultural and Bioresource Engineering
- Univ. of Illinois, Urbana, IL (United States). Bioenvironmental Engineering Research Lab.
In many cases, airflow rates through microenvironments (e.g., zones within a room) are unknown and vary considerably from mean room (macro environmental) conditions. A steady-state calorimetry method to estimate the ventilation rate in an airspace is described. The method can be applied not only to enclosed, mechanically ventilated airspaces but also to those less-enclosed airspaces such as a room with a door open or a zone within a room. The method is more appropriate for small airspaces (e.g., zones within a room) where thermal capacitance effects are of little influence. Large airspaces usually have large heat capacitances, which can result in failure to reach a steady state because of the superimposed heating, ventilating, and air-conditioning (HVAC) system and diurnal temperature fluctuations. Limitations of the steady-state calorimetry method are also discussed.
- OSTI ID:
- 33255
- Report Number(s):
- CONF-9406105--
- Country of Publication:
- United States
- Language:
- English
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