Domestic Household energy use

**Cooling units and conversions often used in Energy Modeling of Buildings:**

**Cooling tons vs. Btu**

Btu per hour = sometimes written as: Btuh or Btu/h or Btu/hr

Cooling hvac conversion:

1= (1 ton*hr cooling)

(12,000 Btu)

1= (1 ton cooling)

(12,000 Btu/hr)

Cooling Tower conversion:

1= (1 cooling tower ton)

(15,000 Btu/hr)

**Chilled water gpm vs. ton**

No Glycol, Temperature units in Fahrenheit

Btu/h = (1 (constant units: Btu/lbm * F)) * [constant: 8.33(lbm/gal)] * [variable: gpm] * [variable: Delta T]

**Cooling horse power (not motor horse power)**

"Amount of cooling output in units of horse power"

Note: Cooling horsepower is sometimes referred to as the motor nameplate horse power of the compressor motor in some industries.

1 = 1 hp

.746 kW

**Chiller equation:**

Tons = (GPM DELTA T) Temperature in Fahrenheit Approximately From chillers.com

24

Mbtu, MMBtu, Btu

1= mmBtu

1,000,000 Btu

mmBtu = "million" btu or "Thousand thousand" btu

This uses the Roman Numeral value "m", not to be confused with roman numeral "M"

BEWARE:

MBt does not = 1,000 btu, Only in Equest Result sim file output

it may also be labeled as:

mBtu=1,000,000 btu, Only in Equest Results sim file output

-Note: 1= apples

oranges

These conversions use the unitary multiplication method.

## Comments (0)

You don't have permission to comment on this page.