WebApr 3, 2007 · "Ton" refers to a BTU rating not really CFM. 12,000 = Ton But when most reference cfms in terms of a unit, the "rule of thumb" is for every 12000 btus there should be 400 cfm. its just easier to say cfm per ton Anything worth doing, is worth doing right......the first time!!! WebAug 21, 2005 · A rule of thumb in air conditioning work is that 400 cfm of air is equal to 1 ton. If 400 cfm of air and a delta T of 20 degrees is achieved, this is equal to only 400X20X1.08=8640 btu/h.. This is not 12000 btu's. What am I missing here besides a college education. trashcanman (Mechanical) 19 Aug 05 16:17
What is the thumb rule for AC tonnage calculation? – Short-Fact
WebJun 4, 2024 · At cfm we like "rules of thumb". We have rules of thumb for airflow, air distribution, cooling capacities and more. Today we provide you with a "Square Feet per … WebApr 23, 2016 · As a ROT (Rule Of Thumb) it is said: 2.4 GPM/Ton cooler water flow. 400 CFM/Ton air handling unit air flow. 3 GPM/Ton cooling tower water flow. (??) CFM/Ton cooling tower air flow. This last ROT is unknown for me.Though there is many reservations about the the accuracy of ROTs. coffy rating
CFMS vs Tons - HVAC/R engineering - Eng-Tips
WebApr 5, 2024 · This is one of the most established and misleading rules of thumb in our industry. Yes, that’s right. ... we are going to assume proper system performance with 400 CFM per ton. Don’t worry; it could also be predicted with different airflows (I prefer to be closer to 350 CFM per ton myself), but to streamline the calculations, we’re going ... WebMay 24, 2024 · This rule of thumb states that the MAX heating capacity required for your comfort cooling application is 1.7 x the cooling load. For example, if the cooling … WebThe HVAC Duct Sizing Rule of Thumb. As a general rule of thumb, the diameter of your HVAC duct should be no less than 125% of the width of your furnace outlet. Gluten, Dairy, Sugar Free Recipes, Interviews and Health Articles ... (Approximately 400 CFM per ton) would require (2) 14” flexible return ducts or (1) very short flexible 18” duct ... coffyright