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Heat Loss Calculations - Steffes

www.steffes.com/_literature_31172/Rule_of_Thumb

(Rule Of Thumb Shortcut Methods). Cubic Foot Method for Calculating Heat Loss: ⇨ Homes with a basement: Use 2.4 BTU heat loss/cubic foot for the upper ...

Furnace Sizing Calculator - AC4Life

www.acdirect.com/gas-heat-learning-center-furnace-sizing-calculator

30 - 35 Btu's per square foot, 35 - 40 Btu's per square foot, 40 - 45 Btu's per ... A general rule of thumb is that if your home is well insulated with newer style ...

Energy Management: Design Rules of Thumb

www.northitascaelectric.com/EM/designrules.html

Jun 6, 2013 ... The design rules below are intended for informational purposes only. ... Plenum heaters can be sized using 8 to 10 watts per square foot with 8 foot ceilings ... 2.75 Btu's heat loss per cubic foot for the upper level and 1.75 Btu's ...

How Many BTUs Does a Furnace Need for a House? | Home Guides ...

homeguides.sfgate.com/many-btus-furnace-need-house-100318.html

But there are also "rule-of-thumb" estimations you can use to pick a furnace size for ... At 40 to 45 BTUs per square foot, you'd need a 100,000 to 112,500 BTU ...

Strategy Guideline: Accurate Heating and Cooling Load ... - NREL

www.nrel.gov/docs/fy11osti/51603.pdf

... and rules of thumb were developed for HVAC sizing that worked based on the construction at that time. .... Many HVAC companies rely on the “400 square feet per ton” rule for ... The peak heating and cooling load is in Btu/h (Btu per hour).

HVAC Design & Thumb Rules - Scribd

www.scribd.com/doc/18185824/HVAC-Design-Thumb-Rules

HVAC Design & Thumb Rules - Free download as PDF File (.pdf), Text File (.txt) or ... Average Load 200 sq. ft. of floor area per ton 9 people per ton 175 sq. ft. of floor ... Equipment Type Approximate Airflow Rate 1 CFM per 100 Btu/hr output 50 ...

Evaluating Residential Forced-Air Heating Systems In - the Cold ...

cchrc.org/docs/reports/FinalReportRHE.pdf

modestly sized, with living areas ranging from 1050 square feet to 2482 square ... “rule of thumb,” common for Anchorage area homes, is 40 btu's heat loss per ...

How To Choose a New Boiler - Bob Vila

www.bobvila.com/articles/how-to-choose-a-new-boiler/

An easy rule-of-thumb for BTU requirements is to figure that you need about 50 BTU per square foot of interior space in a cold climate; 35 BTU per square foot in  ...

How do you calculate the number of BTUs per square foot ...

www.reference.com/science/calculate-number-btus-per-square-foot-51b30503ac6d8b59

Divide the final BTU calculation by the total square footage to get the number of BTUs ... Rule of Thumb BTU Per Square Foot · Calculate Price Per Square Foot ...

3.3: Rule-of-Thumb Calculations | Engineering360 - GlobalSpec

www.globalspec.com/reference/64919/203279/3-3-rule-of-thumb-calculations

3. Learn more about 3.3: Rule-of-Thumb Calculations on GlobalSpec. ... These are typically square feet per ton for cooling, Btu per square foot for heating, and ...

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Calculating Cooling Loads | GreenBuildingAdvisor.com

www.greenbuildingadvisor.com

May 4, 2012 ... Since water has a latent heat capacity of about 1,000 BTU per pound, ..... The 1 ton per 1,000 square feet rule of thumb is interesting.

Rule of thumb: Sq Ft per ton of A/C - HVAC-Talk

hvac-talk.com

RS Means has some 'rule of thumb' for sq ft per ton. .... can add for commercial sites: Humans = 600 BTUs per head & it can 900 BTUs per head ...

Rule of Thumb A/C sizing question from Practice Exam - InterNACHI ...

www.nachi.org

A typical value used for air conditioners is one ton (12,000 Btu /hour) per 500 square feet (46 m2). This does not take into account differences ...