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M409
HVAC Psychrometric Analysis to Avoid Moisture Problems

Fred W. Dougherty, P.E.,B.A.E, M.M.E

Moisture may build up in a building when the mechanical cooling system is unable to remove latent heat from occupants and ventilation air. Simply matching the cooling system capacity to the building sensible and total cooling loads does not ensure that a selected cooling system can deliver design room temperature and relative humidity. This course explains how to set up psychrometric analysis and plot state points and process lines for room loads and cooling coil capacity on a psychrometric chart. Examples of systems with varying occupancy and outdoor air are presented using actual HVAC projects. These examples show how psychrometric analysis can spot potential moisture problems and lead to solutions.

This course includes a multiple-choice quiz at the end, which is designed to enhance the understanding of the course materials.


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NY PE & PLS: You must choose courses that are technical in nature or related to matters of laws and ethics contributing to the health and welfare of the public. NY Board does not accept courses related to office management, risk management, leadership, marketing, accounting, financial planning, real estate, and basic CAD. Specific course topics that are on the borderline and are not acceptable by the NY Board have been noted under the course description on our website.

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