### Sq ft equal to BTU output? — Heating Help: The Wa

The square foot rating refers to square feet (in EDR or Equivalence of Direct Radition) of radiators--not square footage of a home. One square foot EDR of normal low pressure steam is good for 240 btu/hr.

### Convert cord to sq ft , ft2 | cord to square fe

Diferent area surface units conversion from cord to square feet. Between cord and sq ft , ft2 measurements conversion chart page. Convert 1 cord into square foot and cords to sq ft , ft2. The other way around, how many square feet - sq ft , ft2 are in one cord - cord unit? Calculate from area into other area unit measures.

### How Do I Size Electric Furnaces? | Hunk

Use the geographic climate zone of the area you live in to determine your heating square footage range. The heating range is expressed as a minimum or maximum number of Btu (British thermal unit) per square foot. The Zone 1 range is 20-25 Btu, Zone 2 is 30-35, Zone 3 is 35-40, Zone 4 is 40-45 and Zone 5 is 45-50. In the northern states of the U ...

### Convert square meters to square feet | surface area conversi

This on the web one-way conversion tool converts surface area units from square meters ( m 2 , sq m ) into square feet ( ft 2 , sq ft ) instantly online. 1 square meter ( m 2 , sq m ) = 10.76 square feet ( ft 2 , sq ft ). How many square feet ( ft 2 , sq ft ) are in 1 square meter ( 1 m 2 > , sq m )?

### How do I calculate steam square feet? — Heating Help: The Wa

Yes, the SF of EDR is the "equivelant square feet" of radiation of your heating system. This is equal to the "unfolded" square feet of the radiators and uninsulated piping. Since it is hard to measure the acutal square feet of surface area, there are tables used to determine SF of EDR.

### List of unusual units of measurement - Wikiped

One square is equal to 100 square feet (9.29 m 2). A roof's area may be calculated in square feet, then converted to squares. Cow's grass. In Ireland, before the 19th century, a "cow's grass" was a measurement used by farmers to indicate the size of their fields.

### What is the unit of power called boiler horsepowe

Jul 22, 2004· Each 10 square feet of surface represented 1 boiler horsepower, so a boiler with 100 square feet of heating surface would be rated at 10 boiler horsepower. Because boilers vary greatly in design and efficiency, this is a very inadequate way of rating them.

### Boiler Horsepower to Square Feet Equivalent Direct .

Unit Descriptions; 1 Horsepower (boiler): The energy rate needed to evaporate 34.5lb of water at 212 °F (100 °C) in one hour. Equal to 33,475 BTU/h.

### Equivalence of direct radiation - Wikiped

Equivalence of direct radiation (EDR) is a standardized comparison method for estimating the output ability of space-heating radiators and convectors.. Measured in square feet, the reference standard for EDR is the mattress radiator invented by Stephen J. Gold in the mid 19th century.. One square foot of EDR is able to liberate 240 BTU per hour when surrounded by 70 °F (21 °C) air and filled ...

### How many square feet of heating surface is equal to one .

Sep 27, 2019· How many square feet of heating surface is equal to one horse power? Kaitlin Dean. in Schools . follow. followin. 1 answer . 2 views × To follow this question, please enter your ...

### Exploring ThE MyTh of BoilEr hEaTing SquarE fooTa

ABMA recommends 5 sq. ft. of heating surface for firetube boilers as the standard to prevent shortened boiler life. Cleaver-Brooks designs firetube boiler utilizing advanced heat transfer tubes and optimized furnace with less than 5 sq. ft. of heating surface.

### Kilowatts to Square Feet Equivalent Direct Radiation .

2 Kilowatts to Square Feet Equivalent Direct Radiation = 28.4345: 80 Kilowatts to Square Feet Equivalent Direct Radiation = 1137.3805: 3 Kilowatts to Square Feet Equivalent Direct Radiation = 42.6518: 90 Kilowatts to Square Feet Equivalent Direct Radiation = 1279.5531: 4 Kilowatts to Square Feet Equivalent Direct Radiation = 56.869

### How to Figure the BTUs for an Electric Heater | Home .

Dec 09, 2018· For example, a 12- by 12-foot room measures 144 square feet. Multiplying this by 10 reveals that a 1,440-watt heater is required to heat the space. …

### How to Size Hot Water Baseboard Heaters | Hunk

A hot water baseboard heater uses radiated heat from heated water to warm a room. Essentially, hot water baseboard heaters work the same as older cast iron radiators, except they take up less space. When you size hot water baseboard heaters, you are not determining the physical dimensions of the equipment; you are determining the required heat ...

### Exam Study Flashcards | Quizl

How many square feet of heating surface does a 3-inch fire tube 20 ft long with 3/16-inch wall have Poor Circulation In a high temperature hot water boiler, what would cause a tube to overheat.

### What is the capacity of a boiler if its heating surface .

Jul 06, 2019· Assume boiler with dimensions 10 x 10 x 20 surface is 10 x 10 x 2 = 200 and 10 x 20 x 4 = 800 total 1000 SM volume is 10 x 10 x 20 = 2000 M^3

### BTU/hour square foot Conversion Table - Heat Flux Density .

BTU/hour square foot Conversion Factors - Heat Flux Density ... is equal to : Conversion Factor : Unit : 1: BTU/hour square foot = 1 : BTU/hour square foot: 1 = 0.016666666679041 : BTU/minute square foot: 1 = 7.5346106286424E-5 : calorie/second square centimeter: 1 = 0.55555555579037 :

### Convert acres to square feet | surface area conversi

This on the web one-way conversion tool converts surface area units from acres ( ac ) into square feet ( ft 2 , sq ft ) instantly online. 1 acre ( ac ) = 43,560.00 square feet ( ft 2 , sq ft ). How many square feet ( ft 2 , sq ft ) are in 1 acre ( 1 ac )? How much of surface area from acres to square feet, ac to ft …

### Boiler Operators Exam- Preparation Guide Q&A Flashcards .

How many square feet of heating surface does a 3-inch fire-tube 20 ft long with a 3/17-inch wall have? 13.7 feet of square surface In a high-temperature hot water boiler, what would cause a …

### How many square feet of heating surface is equal to one .

140 square meters equal 1506.947 square feet. Scroll down to related links and look at "Conversions of area and surface units".

### Passive Solar Homes Glass-To-Thermal-Mass Ratios | Solar3

It is important to note that all thermal mass on the floors and walls should be at least 4-6 inches thick to be effective. For floors in direct sunlight, you need 5.5 square feet of surface for every extra square foot of glazing (over the 7% mark).