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• The RTWD heat pump system consumed 42% of the electricity used for heating and cooling while producing 53% of the heating energy, achieving a net energy savings of $89,404 with an average COP of 2.98. 716,192 pounds of CO2 were avoided by operating the heat pumps. 3 Alaska SeaLife Center Seawater RTWD Heat Pump System Performance ACEP Monitoring Period - April 1, 2016 - April 30, 2017 ACEP Monit oring Period Apr 1, 2016- Apr 30, 2017 June July Aug Sept Oct Nov Dec Jan Feb Mar Apr Total Electricity Consumed 26,622 17,065 9,514 13,301 15,932 27,661 40,259 66,737 70,226 57,335 56,580 36,890 384,920 Thermal Energy Delivered 144 87 46 88 133 289 430 674 684 593 722 305 3,918 ELECTRIC CONSUMPTION BY HEAT PUMP SYSTEM - from Tracer System logs for Period April 1- April 30, 2017 42,206 25,588 13,359 25,872 38,890 84,706 126,030 197,549 200,463 173,715 211,648 89,501 1,148,374 HP System COP Coefficient of Performance ( 293.1*SWHP Thermal MMBTU/Total kWh Elect ricit y saved (Kwh) ( 293.1*SWHP Thermal MMBTU) Sea Water HP System SWHP Thermal MMBTU (HP Mont hly Energy Total kWh Consumed (HP System Monthly Power Usage Logs) Apr** May 36,813 Logs) 279 81,775 Consumed)** 2.22 1.59 1.50 1.40 1.95 2.44 3.06 3.13 2.96 2.85 3.03 3.74 2.43 2.98 ENERGY COST SAVINGS kWh 384,920 Cost kWh $0.1171 Energy Cost $45,076 Electricity Saved (kWh) Cost Of Electricity Saved Electricity Used (kWh) Cost of Electricity Used Net Energy Cost Savings Monthly Average Cost Savings C02 AVOIDED* 1,148,374 Oil Equivalent $134,481 384,920 $45,076 $89,404 $6,877.26 Lbs C02 Avoided CO2 Avoided 716,192 716,192 *Formula: SWHP Total MMBTU X 1.13 (.87 fuel to hot water efficiency at 195F of 80-HP Cleaver Brooks 4-pass oil boiler) / 136,000 ( BTU energy of one gallon of #1 heating oil) X 22 (punds of CO2 generated by burning one-gallon of #1 fuel oil) ** COP January-March 2017 is higher due to Pump 100 being off-line so salt water pumping electric energy not included Figure 2 ASLC RTWD Heat Pump System Performance • The remainder of the electricity used for heating was consumed by the electric boiler (14%), domestic hot water tank immersion heater (2%), and Waterfurnace domestic hot water heat pump (1%). These devises contributed 9% of the energy production at a cost of $21,407. 4 3 See Figure 2 4 See Figure 3 5PDF Image | Trans-Critical CO2 Heat Pump System AEA Grant
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CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
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