![]() This is a summary of American Society of Heating and Refrigeration and Air-Conditioning Engineers, Inc. Design recommendations offered are intended to increase the potential for both predictable compliance and the flexibility to accommodate future changes while providing the greatest control reliability with the most energy-efficient methods. ![]() Because of the rate-based nature of both procedures allowed for compliance, this analysis focuses on the practical needs of reliable intake rate control and the risks of indirect controls. (ASHRAE) Standard 62.1-2004 is a short but often misunderstood document outlining ventilation requirements intended to provide acceptable indoor air quality (IAQ) for new buildings or those with major renovations. Locate the Assignment in the list and click the discussion icon to see my comments, and the rubric icon (when a rubric is used) to see the rubric details and the points earned in alignment with each rubric category.American National Standards Institute (ANSI)/American Society of Heating and Refrigeration and Air-Conditioning Engineers, Inc. Login to our Canvas course and click the “Grades” link in the course menu bar. Your Grade & Feedbackįollow these steps to see your grade and my feedback: Overall, your assignment must meet the requirements stated above in a manner that is clear, concise, and proves you understand the content and assignment. Either calculation issue with 2 incorrect factors, or all factors incorrect. 6 points - 3 incorrect factors (either Voz, Rp/Ra, or Ez).Calculation issue, and one incorrect factor or 2 incorrect factors with OK calculation 7 points - 2 incorrect factors (either Voz, Rp/Ra, or Ez).Either calculation issue, or one incorrect factor. 8 points - one incorrect factor (either Voz, Rp/Ra, or Ez).Your submission must be in Microsoft Excel (or google sheets or equivalent spreadsheet format).Įach space should show the Voz in a clearly labeled column as calculated per the instructions above. Design diffuser face velocity is 120 fpm. Design air discharge temperature is 80° F with room setpoint at 68° F. Remember you have the Vbz determined in the equation above, now you just need to apply the Ez to determine the Voz. Use Equation (6-2) to determine the Voz or minimum zone outdoor air flow for each space in your MS Excel file (you will have to multipy and divide factors to get the total).Design diffuser face velocity is 200 fpm, with design velocity at 4' at 160 fpm. Design air discharge temperature is 90° F with room setpoint at 68° F. Air from floor registers with ceiling return. Use the Table 6-4 Zone Air Distribution Effectiveness to determine the air effectiveness (Ez) for each space based on the following information (assume all are well mixed):.Use the Breathing Zone Outdoor Airflow Calculation to determine the Breathing Zone Outdoor Airflow (Vbz) for each space.Enter those values into your spreadsheet for each space type.Look up the Minimum Ventilation Rates in Breathing Zone from Table 6-1 this will give you the People Outdoor Air Rate and the Area Outdoor air rate.Purpose, Scope, and Definitions are important parts to review to orient yourself to the standard.If you have done work in this space and would like to explore a multi-zone calculation - get in touch with me.Įnter the information above into an MS Excel Workbook. a fan coil served with 100% outdoor air or a packaged unit). You can assume these spaces are served by a single zone air handling system (e.g. Using ASHRAE 62.1 and the information below - calculate the required zone outdoor airflow for 5 different spaces:
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