MEASUREMENT OF WATER HEATER EFFICIENCY. MEASURE EFFECTIVENESS APPLICATION – RETIREMENT VILLAGE CURRENT SYSTEM (CONTROL) CONTROLLER (NEW SYSTEM) ACCOUNT.

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Presentation transcript:

MEASUREMENT OF WATER HEATER EFFICIENCY

MEASURE EFFECTIVENESS APPLICATION – RETIREMENT VILLAGE CURRENT SYSTEM (CONTROL) CONTROLLER (NEW SYSTEM) ACCOUNT FOR USE PATTERNS

CONSTRAINTS NO LOSS OF HOT WATER SERVICE TWO WEEKS FOR EXPERIMENT

LARGE CONSUMPTION

CONCERNS GAS METER MEASURED BOTH HOT WATER AND SPACE HEATING USAGE WAS BURNER CONSUMPTION RATE CONSTANT? HOW TO ACCOUNT FOR GREATER USAGE ON MONDAY AND FRIDAY? HOW TO ACCOUNT FOR STANDBY LOSSES?

GAS METER MEASURED BOTH HOT WATER AND SPACE HEATING USAGE MONOTOR TIME THAT GAS SOLENOID IS OPEN.

WAS BURNER CONSUMPTION RATE CONSTANT? CALIBRATE BURNER GAS CONSUMPTION MEASURE HOT WATER GAS CONSUMPTION WITH SPACE HEATING OFF REPLICATE

WEEKLY USAGE

HOW TO ACCOUNT FOR GREATER USAGE ON MONDAY AND FRIDAY? USE BLOCKING INSTALL CONTROLLER ACTIVATE FIRST WEEK DEACTIVATE SECOND WEEK

HOW TO ACCOUNT FOR STANDBY LOSSES? USE BLOCKING IN TIME EXAMINE EFFECT OF USAGE

RESULTS

CONTROLLER OFF

BALANCE CHECK

CONTROLLER OFF

CALCULATION

CONTROLLER ON

t-TEST

EFFECT OF WATER USAGE

CONCLUSIONS CONTROLLER REDUCES GAS CONSUMPTION BY 11% DIFFERENCE IS STATISTICALLY SIGNIFICANTLY GAS CONSUMPTION PER GALLON OF HOT WATER REDUCES WITH GREATER CONSUMPTION

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