Appendix B - HVAC and GSHP Units ConverterInput Values in Yellow Cells - Read Converted Units in Blue Cells

English to MetricTemperature 68 °F = 20.0Length 100 ft = 30.5Length 1.00 in = 2.54Distance 1.00 mi = 1.61Mass 1.00 lb = 0.45

Area 1,000 93

Volume 1000.0 28.3Volume 100.0 gal = 378.5Power 1 hp = 0.75

Density 1.00 16.02Velocity 1000 fpm = 5.080Pressure 100 psi = 689.5External Static Presure 1 in. of water = 249.0Liquid head 100 ft of water = 30.5Head-Pressure 37.3 ft. water = 111.9Head-Pressure 3 ft. water/100' 0.295Specific Heat 1.00 Btu/lb-°F 4.19Therm Cond 1.000 1.731Thermal Resistance 1.000 0.578

Heat Transfer Coefficient 100.0 567.8

Hydraulic Conductivity (permeability) 1.000 0.041Air Flow 1000 cfm = 472.0

Air Flow 1000 cfm = 1699.2Water Flow 1 gpm = 3.79Water Flow 1000 gpm = 63.09

Water Flow 100 gpm = 22.7Specific capacity (water well) 1.000 gpm/ft = 0.021Loop thermal mass 1.00 gal/ton = 1.07

Acerage to sq. ft. 1 acres 43560

Acerage 1 acres 4047

Acerage 1000 acres 405

Cooling load/Capacity 1 Ton = 3.52Cooling load/Capacity 1000 kBtu/h = 293.1Cooling load/Lake area 10 Ton/acre = 86.9

Cooling load/Face Area 11.5 36.314.00 Btu/W-h = 4.10

0.75 kW/Ton = 4.69

Bore Length/hp cap. 282 ft/ton = 24.4

ft2 =

ft3 =

lb/ft3 =

Btu/h-ft-°F =h-ft-°F/Btu =

Btu/h-ft2-°F =

gal/ft2-day

kBtu/h-ft2

Cooling Eff. EER←→COPCooling Eff. kW/ton←→COP

Feet per ton to W/m 209 ft/ton = 55.2

Bore Length/floor area 0.40 4.30

Pump power/hp cap. 5 hp/100 ton = 1.06

Pump power/hp cap. 11.3 hp/100 ton = 24.0

Floor Area/capacity 353 9.33Water Flow/capacity 2.5 gpm/ton = 2.69

Demand/Floor area 6.50 69.94Air Flow/capacity 400 cfm/ton = 53.7

Solar Radiation 7 0.021

Solar Radiation 500 5.7Lake Flow 13500 ft3/s 382.33Header Cfactor Ht Loss 0.002 gpm/ft 0.00041Fin pitch - fin spacing 12 fins/inch = 2.1

Cost/Area $12.84 $138.21Cost/Length $0.60 $/ft = $1.97Cost/Cooling load $7,694 $/Ton = $2,188Cost/Volume $15.00 $/gal = $3.96

ft/ft2 =

ft2/ton =

W/ft2 =

Btu/hr-ft2=

Btu/day-ft2=

$/ft2 =

Appendix B - HVAC and GSHP Units ConverterInput Values in Yellow Cells - Read Converted Units in Blue Cells

Metric to English °C 0 °C = 32.0 °F m 100 m = 328.1 ftcm 1.00 cm = 0.394 inkm 1.00 km = 0.62 mikg 1.00 kg = 2.20 l2

1000 10764

93 3283.8litres 100 litres = 26.4 gal kW 1 kW = 1.34 hp

1000.00 62.44m/s 1 m/s = 197 fpmkPa 100 kPa 14.5 psiPa 1000 Pa = 4.02 in. of waterm of water 100 m of water = 328.1 ft of waterkPa 152 kPa 50.7 ft. waterkPa/m 1 kPa/m 0.33 ft. water/100' kJ/kg-K 1.00 kJ/kg-K 0.24 Btu/lb-°F

1.000 0.5780.578 1.000 h-ft-°F/Btu

100.0 17.6

m/day 0.010 m/day 0.246Lps 1000 Lps = 2118.6 cfm

1000 588.5 cfmLpm 1 Lpm = 0.264 gpmLps 1 Lps = 15.9 gpm

100 440.2 gpmLps/m 0.0100 Lps/m = 0.483 gpm/ftL/kW 1.00 L/kW = 0.93 gal/ton

43560 1.0 acres

1000 0.247 acres

1000 ha = 2470 acres

kW 1 kW = 0.284 TonkW 1000.0 kW = 3412.0 kBtu/hkW/ha 10 kW/ha = 1.2 Ton/acre

50.0 15.8W/W 3.99 W/W = 13.61 Btu/W-hW/W 4.69 W/W = 0.75 kW/Ton

m/kW 18.5 m/kW = 213.5 ft/ton

m2 m2 = ft2

m3 m2 = ft2

kg/m3 kg/m3 = lb/ft3

W/m-K W/m-K = Btu/h-ft-°Fm-K/W m-K/W =

W/m2-K W/m2-K = Btu/h-ft2-°F

gal/ft2-day

m3/hr m3/hr

m3/hr m3/hr =

ft2 ft2

m2 m2

ha (104 m2)

kW/m2 kW/m2 kBtu/h-ft2

W/m 40 W/m 288.5 ft/ton

4.30 0.40

1 4.7 hp/100 ton

1 4.7 hp/100 ton

9.33 353Lpm/kW 3 Lpm/kW 2.79 gpm/ton

4.30 0.40Lps/kW 50 Lps/kW 372.6 cfm

1.00 317

34.1 3004m3/s 2 m3/s = 70.6 ft3/sLps/m 0.00041 Lps/m 0.00198 gpm/ftmm 2.1 mm = 12.1 fins/inch

$1.93 $0.18 $/ft$/m $20.00 $/m = $6.10 $/Ton$/kW $1,737 $/kW $494$/litre $4.00 $/litre $15.14 $/gal

m/m2 m/m2 = ft/ft2 kWm/100 kWt kWm/100 kWt =

Wm/kWt kWm/100 kWt =

m2/kW m2/kW = ft2/ton

W/m2 W/m2 = W/ft2

kW/m2 kW/m2 = Btu/hr-ft2

MJ/day-m2 MJ/day-m2 Btu/day-ft2=

$/m2 $/m2 =