The house has 4 inches of exterior foam board (in two layers) and 2 inches closed cell spray foam with cellulose in the wall cavities.

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Rosemary May
5 years ago
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1 Monitoring Plan for TED House The 1200 sq ft TED House has radiant floor heating with a 96.5% gas-fired Rinnai E75CN water heater. The Rinnai unit has a separate water circuit to provide space heating. A Fantech HRV will provide balanced ventilation for the house. The house does not have a cooling system installed. The house has 4 inches of exterior foam board (in two layers) and 2 inches closed cell spray foam with cellulose in the wall cavities. Monitoring Approach A data acquisition system will be installed to monitor the energy performance of the house and its mechanical systems. The system will be mounted in a 16 in x 18 in enclosure mounted on the wall near the boiler (on the plywood). The system will be based around a Campbell Scientific CR1000 data logger. Data will be collected at 15-minute intervals. Our first choice for communications would be to plug into the home owners Ethernet router in order to go out to internet. Alternatively we could use a phone line. CDH Energy Corp. 1 November 2010

2 The proposed data points are shown in Table 1 and Figure 2. The monitoring points were selected to: Measure total house electric use (WTI) to quantify internal house loads and submeter other selected electrical loads (WA1) Measure boiler fuel use (FG) to fuel use patterns as well as boiler system (unit and pump) power (WB), Measure the thermal output of the boiler to the floor (FR, TFS, TFR) to determine boiler efficiency and heating loads as a function of loading and supply temperature, Measure domestic hot water (DHW) water use and thermal output (FHW, THWO, THWI) to quantify loading patterns and hot water use, Measure the operating status the heating zone pumps (SP1, SP2) in order to understand and quantify the operating patterns of the system. Measure the inlet and outlet conditions from the ventilation system (e.g., HRV) (TAI, RHI, TAO, TAS) to confirm operation, detect defrost patterns (IFV), quantify heat recovery performance. SP1,2 Natural Gas FG FR Rinnai THWI FHW THWO Cold Water Hot Water Main Breaker Box WTI, WTE, WB Radiant Floor Circuits TFS TFR Indoor Air Supply Air TAI RHI TAS HRV IFV Ceiling Outlet Exh Air TAO Outdoor Air Figure 1. Schematic of Heating and Ventilation System with Data Points Shown CDH Energy Corp. 2 November 2010

3 Table 1. List of Measured Data Points Channel Data Point Description Eng Units Instrument / Transducer Range SE1 TFS Floor HW Supply Temperature F Type-T Thermocouple n/a SE2 TFR Floor HW Return Temperature F Type-T Thermocouple n/a SE3 (empty) TBS Boiler Supply Temperature F Type-T Thermocouple n/a SE4 TAS HRV Supply Temperature F Type-T Thermocouple n/a SE5 TAO Outdoor Temperature (in HRV) F Type-T Thermocouple n/a SE6 TAI Space Temp (in HRV) F Type-T Thermocouple n/a SE7 THWO DHW Outlet Temperature F Type-T Thermocouple n/a SE8 THWI DHW Inlet Temperature F Type-T Thermocouple n/a SE9 IFV HRV Fan Current (dmpr pos) amps Veris 921 Current Sensor 0-30 A SE10 RHI Space RH (in HRV) % Vaisala RH Transducer 0-100% RH SE13 SP1 Floor Pump 1 min Veris 300 Current Switch n/a SE14 SP2 Floor Pump 2 min Veris 300 Current Switch n/a P1 FR Flow Rate to Radiant Floor gpm Onicon F1300, 3/4 in n/a P2 FHW Hot Water Flow Rate gal Omega FTB 4607 n/a C1 FG Boiler System Gas Consumption CF AM250 Gas Meter with Pulse n/a C2 WTI Total House Power (import) kwh Wattnote WNB-208 (P1) n/a C3 WTE Total House Power (export) kwh Wattnote WNB-208 (P2) n/a C4 WB Boiler Power (and pumps) kwh Wattnote WNB-208 Option 3 (P1) n/a C5 (empty) WA1 Additional Power Monitor 1 kwh Wattnote WNB-208 Option 3 (P2) n/a CDH Energy Corp. 3 November 2010

4 Figure 2. Rinnai Boiler/Water Heater During Construction TAO CDH Energy Corp. 4 November 2010

5 WTI WTE WB Extension breaker panel located on the wall by the boiler, wattnode panel located beneath. SP SP CDH Energy Corp. 5 November 2010

6 CT measuring HRV power located above the main breaker box. CR 1000 located below the TACO panel and to the lower left of the extension breaker box. Verification: Total house power (WTI) Fluke 39 reading 222W Pulse count per 2 min 3 CDH Energy Corp. 6 November 2010

7 Power used 225 Notes: 2.5Wh/pulse (from manual) Boiler Power (WB) Fluke 39 reading 270W Pulse count per min 37 Power used Notes: 0.25 Wh/pulse (from manual) Wire looped through CT twice Sensor R(ohms) output Range (ma) Sensor Range Mult Offset IFV RHI HRV Fan Current (IFV) measurements: Off On Difference Veris (amps) Fluke 39 (amps) Flow Rate to Radiant Floor (FR): 2x pumps gal/min 1x pump gal/min 0x pumps 0 gal/min Notes: from counting FR acc in data monitor window from multiplying instantaneous g/s by 60s CDH Energy Corp. 7 November 2010

The owner has future plans to install a photovoltaic array on the house.

The owner has future plans to install a photovoltaic array on the house. Monitoring Plan for Live-Work House (Cook+Fox). This 1,500 sq ft house at 317 Marcellus Street includes an HRV for ventilation and small Munchkin 80 MBtu/h Condensing Boiler for radiant floor heating and