Passive House Institute US

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2 AGENDA 1. Background 1. Motivation for monitoring 2. Potential Factors 2. Beach Green North (BGN) - Monitored Data Analysis: 1. Building Rundown 2. Data Rundown 3. Monitored vs Modeled 3. Lessons Learned

3 IMPORTANCE OF MONITORING PHIUS+ Certification is based on design need to verify actual performance Realize & quantify savings Troubleshoot issues Adjust modeling protocol to improve predicted values Shape incentives from local jurisdictions & rating systems

4 POTENTIAL FACTORS AFFECTING DIFFERENCES BETWEEN MODELED AND MONITORED Varying heating setpoint above/below 68F (winter) Varying cooling setpoint above/below 77F (summer) Climatic differences between measured year and typical year used for modeling Varying number of occupants from modeled assumption (BR+1) Occupant behavior (work from home, kids vs adults, lifestyle, habits) Equipment tested efficiency varying from real performance System/Operator Error

5 Beach Green Dunes Far Rockaway, NY 101 units 107,800 ft 2 Central VRF In-Unit ERVs Gas Water Heating Central Laundry

6 BTU/SF/HDD

7 BTU/SF/HDD kbtu/sf

8 BTU/SF/HDD kbtu/sf kwh/sf

9 BTU/SF/HDD kbtu/sf Source kwh/sf EUI kbtu/sf

10 BTU/SF/HDD $ / SF kwh/sf kbtu/sf Source EUI kbtu/sf

11 BTU/SF/HDD $ / SF kwh/sf kbtu/sf Source EUI kbtu/sf Btu/kWh/therm/$

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14 The Andrew Norman Towers Beach Green

15 Beach Green Dunes Far Rockaway, NY 101 units 107,800 ft 2 Central VRF In-Unit ERVs Gas Water Heating Central Laundry

16 WEGOWISE The Andrew Norman Towers BUILDING Beach Green LG VRF SYSTEM YANMAR ELECTRIC BILLS TENANT ELECTRIC BILLS PHOTOVOLTAICS

17 WEGOWISE The Andrew Norman Towers Beach Green

18 WEGOWISE The Andrew Norman Towers BUILDING Beach Green ELECTRIC BILLS

19 WEGOWISE The Andrew Norman Towers BUILDING Beach Green ELECTRIC BILLS

20 WEGOWISE The Andrew Norman Towers BUILDING Beach Green YANMAR ELECTRIC BILLS PHOTOVOLTAICS

21 WEGOWISE The Andrew Norman Towers BUILDING Beach Green YANMAR ELECTRIC BILLS TENANT ELECTRIC BILLS PHOTOVOLTAICS

22 WEGOWISE The Andrew Norman Towers BUILDING Beach Green YANMAR ELECTRIC BILLS TENANT ELECTRIC BILLS PHOTOVOLTAICS

23 WEGOWISE The Andrew Norman Towers BUILDING Beach Green LG VRF SYSTEM YANMAR ELECTRIC BILLS TENANT ELECTRIC BILLS PHOTOVOLTAICS

24 WEGOWISE The Andrew Norman Towers BUILDING Beach Green LG VRF SYSTEM YANMAR ELECTRIC BILLS TENANT ELECTRIC BILLS PHOTOVOLTAICS

25 BEACH GREEN DUNES kbtu/sf kbtu/sf 89% Modeled vs Actual SITE EUI (NO PV) SITE EUI W/ RENEWABLES OCC. ADJ.* 25.0 OCC. ADJ.* 20.0 MEASURED 20.0 MEASURED 15.0 MODELED 15.0 MODELED

26 BEACH GREEN DUNES PERCENT *Months Under Occupied 84% Average Occupancy UNITS POPULATED 100% 90% 80% 70% 60% 50% 40% % UNITS FULL 30% 20% 10% 0%. S* O* N* D* J* F* M* A M J J A

27 BEACH GREEN DUNES kbtu/sf *Months Under Occupied 35.0 SITE EUI MODEL + RENEWABLES MODEL Occ. Adj. MEASURED + RENEWABLES Occ Adj. MEASURED S* O* N* D* J* F* M* A M J J A Total. O* D* F* A J A

28 BEACH GREEN DUNES kbtu/sf *Months Under Occupied 4.5 SITE EUI MODEL + RENEWABLES MODEL Occ. Adj. MEASURED + RENEWABLES Occ Adj. MEASURED S* O* N* D* J* F* M* A M J J A O* D* F* A J A

29 BEACH GREEN DUNES kbtu/sf *Months Under Occupied 4.5 SITE EUI - NO PV MODEL Occ Adj. MEASURED S* O* N* D* J* F* M* A M J J A O* D* F* A J A

30 BEACH GREEN DUNES kbtu/sf *Months Under Occupied 4.0 SITE EUI - PV MODEL + RENEWABLES Occ. Adj. MEASURED + RENEWABLES S* O* N* D* J* F* M* A M J J A O* D* F* A J A

31 Beach Green Dunes Far Rockaway, NY 101 units 107,800 ft 2 NATURAL GAS COMBINED HEAT & POWER DOMESTIC HOT WATER DRYERS

32 BEACH GREEN DUNES DHW HEAT NATURAL GAS COMBINED HEAT & POWER (CHP) ELECTRICITY LIGHT PLUG LOADS METER RUN-BACK

33 BEACH GREEN DUNES kbtu/yr *Months Under Occupied 2,500,000 NATURAL GAS 2,000,000 1,500,000 1,000, ,000 Model Cogen Model Dryers Model DHW Occ. Adj. Aegis Cogen DHW WegoWise Dryers WegoWise Cogen WegoWise DHW Wegowise Occ. Adj. Wegowise Total -. S* O* N* D* J* F* M* A M J J A Total. O* D* F* A J A

34 BEACH GREEN DUNES kbtu/yr *Months Under Occupied 300,000 NATURAL GAS 250, , , ,000 50,000 Model Cogen Model Dryers Model DHW Occ. Adj. Aegis Cogen DHW WegoWise Dryers WegoWise Cogen WegoWise DHW Wegowise Occ. Adj. Wegowise Total -. S* O* N* D* J* F* M* A M J J A O* D* F* A J A

35 BEACH GREEN DUNES kbtu/yr *Months Under Occupied 100,000 CHP USAGE 90,000 80,000 70,000 60,000 50,000 40,000 Model Cogen WegoWise Cogen 30,000 20,000 10, S* O* N* D* J* F* M* A M J J A O* D* F* A J A

36 BEACH GREEN DUNES

37 BEACH GREEN DUNES kbtu/yr *Months Under Occupied 160,000 DHW USAGE 140, , ,000 80,000 60,000 40,000 Model DHW Occ. Adj. Occ. Adj. Aegis Cogen DHW WegoWise DHW 20, S* O* N* D* J* F* M* A M J J A O* D* F* A J A

38 BEACH GREEN DUNES kbtu/yr *Months Under Occupied 12,000 DRYER USAGE 10,000 8,000 6,000 4,000 Model Dryers Occ. Adj. WegoWise Dryers 2, S* O* N* D* J* F* M* A M J J A O* D* F* A J A

39 ELECTRICITY Beach Green Dunes Far Rockaway, NY 101 units 107,800 ft 2 COMMON VRF (HEAT/COOL) COMMON LIGHTS ELEVATORS PUMPS PV FIRE ALARMS, SECURITY, ETC.. TENANT ERV UNIT LIGHTS UNIT PLUG LOADS / APPLIANCES

40 BEACH GREEN DUNES kwh/yr 600,000 ELECTRICITY 500, , , , ,000 - (100,000) UNITS 35% OF TOTAL ELECTRICITY UNITS OFFSET BY PV Model Cogen Model PV Model Tenant Model Common Occ. Adj. Tenant* Electric Bill Cogen PV (200,000) (300,000). S* O* N* D* J* F* M* A M J J A Total. O* D* F* A J A

41 ELECTRICITY Beach Green Dunes Far Rockaway, NY 101 units 107,800 ft 2 COMMON VRF (HEAT/COOL) COMMON LIGHTS ELEVATORS PUMPS PV FIRE ALARMS, SECURITY, ETC.. TENANT ERV UNIT LIGHTS UNIT PLUG LOADS / APPLIANCES

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43 The Joy of Flex

44 BEACH GREEN DUNES kwh/month 500 Unit Average Electricity units 7 months 3 Studio 17 1 Bedroom 10 2 Bedroom 7 3 Bedroom Studio 1BR 2BR 3BR O* N* D* J* F* M* A M J

45 BEACH GREEN DUNES kwh/day 25.0 UNIT ELECTRICITY TENANT ENERGY USE 1,340 kwh/yr x 101 Units = 135,340 kwh/yr ENERGY USE PER UNIT 3.67 kwh/day x 365 days/yr = 1,340 kwh/yr Average Unit Use 3.67 kwh/day UNIT 0.0 1B 1B 3M 3N 1B 1B 7E 5N 7F 3N 3M 6K 2F 2F 5D 7D 5R 4G 4R 7H 7H 6K 5Q 6R 5D 5E 3M 4F 5F 1A 2Q 6A 6R 4R 1A 3Q 6A 7H 6R 6R 4P 7E 4H 2F 6B 5E 5Q 3E 4J 4L 5P

46 BEACH GREEN DUNES kwh/yr 60,000 COMMON + TENANT 50,000 40,000 30,000 20,000 Model Tenant Model Common Occ. Adj. Tenant* Electric Bill 10, S* O* N* D* J* F* M* A M J J A O* D* F* A J A

47 ELECTRICITY Beach Green Dunes Far Rockaway, NY 101 units 107,800 ft 2 COMMON VRF (HEAT/COOL) COMMON LIGHTS ELEVATORS PUMPS PV FIRE ALARMS, SECURITY, ETC.. TENANT ERV UNIT LIGHTS UNIT PLUG LOADS / APPLIANCES

48 BEACH GREEN DUNES kwh/yr 45,000 COMMON ELECTRICITY 40,000 35,000 30,000 25,000 20,000 Model Common Electric Bill 15,000 10,000 5, S* O* N* D* J* F* M* A M J J A O* D* F* A J A

49 BEACH GREEN DUNES Temp. F 90 Temperature Comparison Actual Temp. Model Temp S O N D J F M A M J J A

50 BEACH GREEN DUNES

51 BEACH GREEN DUNES kwh/yr 45,000 COMMON ELECTRICITY 40,000 35,000 30,000 25,000 20,000 Model Common Electric Bill 15,000 10,000 5, S* O* N* D* J* F* M* A M J J A O* D* F* A J A

52 BEACH GREEN DUNES Temp. F 90 Temperature Comparison Actual Temp. Model Temp S O N D J F M A M J J A

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54 BEACH GREEN DUNES kwh/yr - ELECTRIC RENEWABLE OFFSET (5,000) (10,000) (15,000) (20,000) Model Cogen Model PV Cogen PV (25,000) (30,000). S* O* N* D* J* F* M* A M J J A

55 BEACH GREEN DUNES kbtu/sf kbtu/sf 89% Modeled vs Actual SITE EUI (NO PV) SITE EUI W/ RENEWABLES % OCC. ADJ.* 25 OCC. ADJ.* 20 MEASURED 20 MEASURED 15 MODELED 15 MODELED

56 LESSONS LEARNED Assigning roles/responsibilities upfront is critical. Need a contact for design, installation, monitoring, debugging, resident. Monitoring never seems to be a priority, just nice to have. Hard to place priority on that over other budgetary/time constraints. Systems work incorrectly (or not at all) quite often. Meters also break. Whose responsibility is it to check up on that, and then fix it? Monitoring should be part of the design process at the start, not finish. And maintained throughout all phases of design. Critical to follow through with plan during construction. And inspect/track after final installation.

57 Second and Delaware Kansas City PASSIVE BUILDING PART OF THE SOLUTION James Ortega