I am working on a project that has energy savings on the domestic water heater for the service water heating due to low flow sinks and lavs. We have been asked to provide calculations to justify the energy savings on the energy model. The spreadsheet I have attached shows the calculation proving our savings however I am having a hard time connecting how eQuest models this compared to the spreadsheet along with matching the energy consumption values from eQuest and the spreadsheet.
What should be the proper inputs for the Service Water Heating system be?
Any suggestions? Thanks!
BASELINE REPORT- BEPU Building Utility Performance WEATHER FILE- Chicago IL TMY2
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TASK MISC SPACE SPACE HEAT PUMPS VENT REFRIG HT PUMP DOMEST EXT
LIGHTS LIGHTS EQUIP HEATING COOLING REJECT & AUX FANS DISPLAY SUPPLEM HOT WTR USAGE TOTAL
------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- --------
EM1 ELECTRICITY
KWH 94936. 0. 159052. 0. 177219. 0. 33723. 140910. 0. 0. 1857. 10821. 618518.
FM1 NATURAL-GAS
THERM 0. 0. 0. 33591. 0. 0. 0. 0. 0. 0. 0. 0. 33591.
TOTAL ELECTRICITY 618518. KWH 13.449 KWH /SQFT-YR GROSS-AREA 13.449 KWH /SQFT-YR NET-AREA
TOTAL NATURAL-GAS 33591. THERM 0.730 THERM /SQFT-YR GROSS-AREA 0.730 THERM /SQFT-YR NET-AREA
PERCENT OF HOURS ANY SYSTEM ZONE OUTSIDE OF THROTTLING RANGE = 0.3
PERCENT OF HOURS ANY PLANT LOAD NOT SATISFIED = 0.0
NOTE: ENERGY IS APPORTIONED HOURLY TO ALL END-USE CATEGORIES.
PROPOSED REPORT- BEPU Building Utility Performance WEATHER FILE- Chicago IL TMY2
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TASK MISC SPACE SPACE HEAT PUMPS VENT REFRIG HT PUMP DOMEST EXT
LIGHTS LIGHTS EQUIP HEATING COOLING REJECT & AUX FANS DISPLAY SUPPLEM HOT WTR USAGE TOTAL
------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- --------
EM1 ELECTRICITY
KWH 62239. 0. 159052. 113974. 113369. 0. 41385. 66957. 0. 0. 1572. 3721. 562270.
FM1 NATURAL-GAS
THERM 0. 0. 0. 18311. 0. 0. 0. 0. 0. 0. 0. 0. 18311.
TOTAL ELECTRICITY 562270. KWH 12.226 KWH /SQFT-YR GROSS-AREA 12.226 KWH /SQFT-YR NET-AREA
TOTAL NATURAL-GAS 18311. THERM 0.398 THERM /SQFT-YR GROSS-AREA 0.398 THERM /SQFT-YR NET-AREA
PERCENT OF HOURS ANY SYSTEM ZONE OUTSIDE OF THROTTLING RANGE = 0.7
PERCENT OF HOURS ANY PLANT LOAD NOT SATISFIED = 0.0
NOTE: ENERGY IS APPORTIONED HOURLY TO ALL END-USE CATEGORIES.
William Mak
