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Summary Report
Prior 2/1/2012
Prior 6/23/2010
Prior 6/16/2013
Total Energy Use
View HWS
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Hot Water Systems (HWS) Laboratory

The HWS Laboratory is a facility at the Florida Solar Energy Center (FSEC) - UCF grounds in Cocoa, FL used to test a variety of hot water systems simultaneously side by side. The 160 Sq.ft. metal roof building currently houses seven hot water systems including electric, solar thermal, natural gas and tankless systems. The project is part of the Building America program funded by DOE. www.baihp.org/hwslab

The HWS Laboratory houses a 50-gallon electric reference water heater, heat pump water heaters, solar water heaters, natural gas reference 40-gallon water heater. During past testing rotations ultra high water heating efficiencies have been demonstrated with hybrid and improved system configurations. Details on the measurements and calculations are briefly covered in a calculations procedures link.


HWS Laboratory Event Log - Phase 1 -4 (3/2009 - 7/2014)

HWS Laboratory Event Log - Phase 5 (Aug 2014)

Caution: Data being collected are preliminary and cannot be used to characterize relative performance without understanding changing experimental conditions. Valid data have been collected for the systems in final configuration since 10 March, 2009. Data on system performance prior to insulation of piping can be seen from 3 February - 2 March, 2009.

GET%ERR> Channel S2WHRS of HWS is not defined. GET%ERR> Equation: sel002=s2whrs*0.001 will NOT be evaluated GET%ERR> Channel S4WHRS of HWS is not defined. GET%ERR> Equation: sel003=s4whrs*0.001 will NOT be evaluated GET%ERR> Channel S7WHRS of HWS is not defined. GET%ERR> Equation: sel003=s7whrs*0.001 will NOT be evaluated GET%ERR> Channel DIFPAR of HWS is not defined. GET%ERR> Equation: sel003=difpar*0.001 will NOT be evaluated GET%ERR> Channel SPAREB of HWS is not defined. GET%ERR> Equation: sel003=spareb*0.001 will NOT be evaluated GET%ERR> Channel TANPAR of HWS is not defined. GET%ERR> Equation: sel003=tanpar*0.001 will NOT be evaluated GET%ERR> Channel TANGCF of HWS is not defined. GET%ERR> Equation: sel003=tangcf will NOT be evaluated GET%ERR> Channel S6NGCF of HWS is not defined. GET%ERR> Equation: sel003=s6ngcf will NOT be evaluated GET%ERR> Channel BTUST2 of HWS is not defined. GET%ERR> Equation: sel004=btust2 will NOT be evaluated GET%ERR> Channel BTUST4 of HWS is not defined. GET%ERR> Equation: sel005=btust4 will NOT be evaluated GET%ERR> Channel BTUNG5 of HWS is not defined. GET%ERR> Equation: sel005=btung5 will NOT be evaluated GET%ERR> Channel BTUNG6 of HWS is not defined. GET%ERR> Equation: sel005=btung6 will NOT be evaluated GET%ERR> Channel BTUET7 of HWS is not defined. GET%ERR> Equation: sel005=btuet7 will NOT be evaluated GET%ERR> Channel PYRANO of HWS is not defined. GET%ERR> Equation: sel005=pyrano will NOT be evaluated GET%ERR> Channel TOTFL2 of HWS is not defined. GET%ERR> Equation: sel010=totfl2 will NOT be evaluated GET%ERR> Channel TOTFL4 of HWS is not defined. GET%ERR> Equation: sel011=totfl4 will NOT be evaluated GET%ERR> Channel TOTFL5 of HWS is not defined. GET%ERR> Equation: sel011=totfl5 will NOT be evaluated GET%ERR> Channel TOTFL6 of HWS is not defined. GET%ERR> Equation: sel011=totfl6 will NOT be evaluated GET%ERR> Channel TOTFL7 of HWS is not defined. GET%ERR> Equation: sel011=totfl7 will NOT be evaluated GET%ERR> Channel BTUST2 of HWS is not defined. GET%ERR> Equation: sel001=btust2 will NOT be evaluated GET%ERR> Channel S2WHRS of HWS is not defined. GET%ERR> Channel DIFPAR of HWS is not defined. GET%ERR> Equation: sel001=(s2whrs*3.413)+(difpar*3.413) will NOT be evaluated GET%ERR> Channel of HWS is not defined GET%ERR> Channel BTUST4 of HWS is not defined. GET%ERR> Equation: sel001=btust4 will NOT be evaluated GET%ERR> Channel S4WHRS of HWS is not defined. GET%ERR> Equation: sel001=(s4whrs*3.413) will NOT be evaluated GET%ERR> Channel BTUNG5 of HWS is not defined. GET%ERR> Equation: sel001=btung5 will NOT be evaluated GET%ERR> Channel TANGCF of HWS is not defined. GET%ERR> Channel TANPAR of HWS is not defined. GET%ERR> Equation: sel001=(tangcf*1020.0)+tanpar*3.413 will NOT be evaluated GET%ERR> Channel BTUNG6 of HWS is not defined. GET%ERR> Equation: sel001=btung6 will NOT be evaluated GET%ERR> Channel S6NGCF of HWS is not defined. GET%ERR> Equation: sel001=(s6ngcf*1020.0) will NOT be evaluated GET%ERR> Channel BTUET7 of HWS is not defined. GET%ERR> Equation: sel001=btuet7 will NOT be evaluated GET%ERR> Channel S7WHRS of HWS is not defined. GET%ERR> Equation: sel001=(s7whrs*3.413) will NOT be evaluated GET%ERR> Channel AVGIN2 of HWS is not defined. GET%ERR> Channel TOTFL2 of HWS is not defined. GET%ERR> Equation: sel001=avgin2*totfl2 will NOT be evaluated GET%ERR> Channel TOTFL2 of HWS is not defined. GET%ERR> Equation: sel001=totfl2 will NOT be evaluated GET%ERR> Channel AVGIN4 of HWS is not defined. GET%ERR> Channel TOTFL4 of HWS is not defined. GET%ERR> Equation: sel001=avgin4*totfl4 will NOT be evaluated GET%ERR> Channel TOTFL4 of HWS is not defined. GET%ERR> Equation: sel001=totfl4 will NOT be evaluated GET%ERR> Channel AVGIN5 of HWS is not defined. GET%ERR> Channel TOTFL5 of HWS is not defined. GET%ERR> Equation: sel001=avgin5*totfl5 will NOT be evaluated GET%ERR> Channel TOTFL5 of HWS is not defined. GET%ERR> Equation: sel001=totfl5 will NOT be evaluated GET%ERR> Channel AVGIN6 of HWS is not defined. GET%ERR> Channel TOTFL6 of HWS is not defined. GET%ERR> Equation: sel001=avgin6*totfl6 will NOT be evaluated GET%ERR> Channel TOTFL6 of HWS is not defined. GET%ERR> Equation: sel001=totfl6 will NOT be evaluated GET%ERR> Channel AVGIN7 of HWS is not defined. GET%ERR> Channel TOTFL7 of HWS is not defined. GET%ERR> Equation: sel001=avgin7*totfl7 will NOT be evaluated GET%ERR> Channel TOTFL7 of HWS is not defined. GET%ERR> Equation: sel001=totfl7 will NOT be evaluated GET%ERR> Channel AVGMX2 of HWS is not defined. GET%ERR> Channel TOTFL2 of HWS is not defined. GET%ERR> Equation: sel001=avgmx2*totfl2 will NOT be evaluated GET%ERR> Channel TOTFL2 of HWS is not defined. GET%ERR> Equation: sel001=totfl2 will NOT be evaluated GET%ERR> Channel AVGMX4 of HWS is not defined. GET%ERR> Channel TOTFL4 of HWS is not defined. GET%ERR> Equation: sel001=avgmx4*totfl4 will NOT be evaluated GET%ERR> Channel TOTFL4 of HWS is not defined. GET%ERR> Equation: sel001=totfl4 will NOT be evaluated GET%ERR> Channel AVGOU5 of HWS is not defined. GET%ERR> Channel TOTFL5 of HWS is not defined. GET%ERR> Equation: sel001=avgou5*totfl5 will NOT be evaluated GET%ERR> Channel TOTFL5 of HWS is not defined. GET%ERR> Equation: sel001=totfl5 will NOT be evaluated GET%ERR> Channel AVGOU6 of HWS is not defined. GET%ERR> Channel TOTFL6 of HWS is not defined. GET%ERR> Equation: sel001=avgou6*totfl6 will NOT be evaluated GET%ERR> Channel TOTFL6 of HWS is not defined. GET%ERR> Equation: sel001=totfl6 will NOT be evaluated GET%ERR> Channel AVGOU7 of HWS is not defined. GET%ERR> Channel TOTFL7 of HWS is not defined. GET%ERR> Equation: sel001=avgou7*totfl7 will NOT be evaluated GET%ERR> Channel TOTFL7 of HWS is not defined. GET%ERR> Equation: sel001=totfl7 will NOT be evaluated
Jun 23 2017, 00:15 -To- Jun 24 2017, 00:00 EST

Electricity Usage

kWh

ELECTRIC TANK 50 GAL 5.9
80 GAL HEAT PUMP WATER HEATER (HPWH) 0.2
60 GAL HEAT PUMP WATER HEATER (HPWH) 17142.0
80 GAL SOLAR POLYMER GLAZED 0.0
ELECTRIC 50 GAL & CAP-WRAP INSULATION 7966.8

Parasitic Energy

kWh

Differential Controller/Pump 8244.811
POLYMER SOLAR PUMP/CONTROLS 8310.039
TANKLESS COND. PARASITIC 7.830

Natural Gas Usage

cu. ft.

TANKLESS CONDENSING HEATER 54.2
STD (2015) 40 GAL. NAT. GAS TANK 29.9

Energy Output

BTU's

ELECTRIC TANK 50 GAL 4542.7
80 GAL HPWH 6563.0
60 GAL HPWH 0.0
80 GAL SOLAR POLYMER GLAZED 0.0
TANKLESS CONDENSING HEATER 0.0
STD (2015) 40 GAL. NAT. GAS TANK 0.0
ELECTRIC 50 GAL & CAP-WRAP INSULATION 0.0

Ambient Conditions

Integrated/AVG.

Min/Max
Solar Insol. @ 22 deg (Whrs/Sq.m) 0.0 0.0/ 0.0
Outdoor Temp (deg F) 0.0 0.0/ 0.0
Indoor Shed Space Temp (deg F) 1.0 0.0/ 0.0
Ground Temp @ 19 inch depth (deg F) 0.0 0.0/ 0.0

Daily Efficiencies (COP)

* parasitic energy included

ELECTRIC TANK 50GAL 0.85
80 GAL HPWH * 0.00
60 GAL HPWH 0.00
80 GAL SOLAR POLYMER GLAZED 0.00
TANKLESS CONDENSING HEATER 0.00
STD (2015) 40 GAL. NAT. GAS TANK 0.00
ELECTRIC 50 GAL & CAP-WRAP INSULATION 0.00

Total Daily Gallons

gal.

ELECTRIC TANK 50 GAL 0.0
80 GAL HPWH 1278.1
60 GAL HPWH 0.0
80 GAL SOLAR POLYMER GLAZED 0.0
TANKLESS CONDENSING HEATER 0.0
STD (2015) 40 GAL. NAT. GAS TANK 0.0
ELECTRIC 50 GAL & CAP-WRAP INSULATION 0.0

Draw-weighted Inlet Tempratures

deg. F

ELECTRIC TANK 50 GAL 83.8
80 GAL HPWH 1.5
60 GAL HPWH 87.7
80 GAL SOLAR POLYMER GLAZED 2.9
TANKLESS CONDENSING HEATER 0.1
STD (2015) 40 GAL. NAT. GAS TANK 0.0
ELECTRIC 50 GAL & CAP-WRAP INSULATION 0.0

Draw-weighted Outlet Tempratures

deg. F

ELECTRIC TANK 50 GAL 121.0
80 GAL HPWH 2.2
60 GAL HPWH 0.0
MIX VALVE 80 GAL POLYMER SOLAR GLAZED 0.0
TANKLESS CONDENSING HEATER 0.0
STD (2015) 40 GAL. NAT. GAS TANK 0.0
ELECTRIC 50 GAL & CAP-WRAP INSULATION 0.0
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