Laminar Flow Restrictors for Hospitals and Health Care

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Laminar Flow Restrictors for Hospitals and Health Care Facilities JESSE MARTINEZ, PE, CEM &

Laminar Flow Restrictors for Hospitals and Health Care Facilities JESSE MARTINEZ, PE, CEM & JULIANNA COLWELL, CEM SEPTEMBER, 2015

Presentation Overview 2 Objective: Seeking TF approval of LFR workpaper �Measure Description �Workpaper Methodology

Presentation Overview 2 Objective: Seeking TF approval of LFR workpaper �Measure Description �Workpaper Methodology �Results �Issues and Concerns �Questions or Comments Title 9/26/2020

Measure Description 3 Base Case Basic Faucet � No flow restriction device � 2.

Measure Description 3 Base Case Basic Faucet � No flow restriction device � 2. 5 average gpm Title Measure Case Laminar Flow Restrictor � Reduction of flow using laminar flow principles � OSHPD compliant � Not an aerator 9/26/2020

Measure Description 4 Aerators Laminars � Banned in Health Care �OSHPD approved Facilities �

Measure Description 4 Aerators Laminars � Banned in Health Care �OSHPD approved Facilities � Reduce flow by adding turbulence = air � Air allows for bacteria/bio film Title �Laminar changes flow pattern to produce laminar flow with a reduced flow rate 9/26/2020

Measure Description 5 � Units: per Faucet � Measure Application and Delivery Type q

Measure Description 5 � Units: per Faucet � Measure Application and Delivery Type q Prescriptive Rebate � � q Tamper/vandal proof product required Zeolite coating optional Retrofit/Add on (REA) � Eligibility q q Climate Zones: All Building Types: Commercial � DEER Subsectors: Clinics, Hospitals, Nursing Homes � Target Market q Health Care Facilities � � Title Hospitals, Inpatient, Outpatient, Nursing Homes Any facility that is subject to OSHPD regulations 9/26/2020

Measure Description 6 � Market Potential q q 15, 000 SCG customers considered part

Measure Description 6 � Market Potential q q 15, 000 SCG customers considered part of the health care industry Used NAICS codes, LA County assessor data, and published bed counts to estimate potential � q Title Bed counts made the assumption of 1 sink with faucet per every 2 beds reported The data does not cover other operations of some health care facilities such as surgery, food service, and public restrooms Type NAICS Count Est. # of Sinks Rounded Outpatient Buildings 12, 000 187, 897 200, 000 Nursing Care Facilities 2, 000 66, 501 70, 000 Hospitals 800 97, 200 100, 000 Total 14, 800 370, 000 9/26/2020

Measure Description 7 � Measure Costs q q Baseline cost (material + labor): $0

Measure Description 7 � Measure Costs q q Baseline cost (material + labor): $0 Measure cost: � � q Equipment Cost: $7. 27/ea Developed using entire set of vandal proof LFR Neoperl 2014 Wholesale Price List. Labor Installation Cost: $7/ea Current contractor cost per Aerator installed in SCG 3 rd party residential program. Incremental cost: $14. 27 � EUL q 10 year (DEER EUL ID: _Wtr. Ht-WH-Aertr_) � Tamper proof option � NTG q 0. 7 (DEER EUL ID: _All-Default<=2 yrs_) � Savings Potential q q Title 470, 000 therms/yr for SCG as a conservative estimate Similar possibilities across the state 9/26/2020

Workpaper Methodology: Baseline 8 � Title 9/26/2020

Workpaper Methodology: Baseline 8 � Title 9/26/2020

Workpaper Methodology: Measure 9 �Measure Control Volume q Title No need to deal with

Workpaper Methodology: Measure 9 �Measure Control Volume q Title No need to deal with hot water delivery or production system 9/26/2020

Workpaper Methodology: Measure 10 � Title 9/26/2020

Workpaper Methodology: Measure 10 � Title 9/26/2020

Workpaper Methodology: Measure 11 � Title 9/26/2020

Workpaper Methodology: Measure 11 � Title 9/26/2020

Workpaper Methodology: Measure 12 � Title 9/26/2020

Workpaper Methodology: Measure 12 � Title 9/26/2020

Workpaper Methodology: Measure 13 � Title 9/26/2020

Workpaper Methodology: Measure 13 � Title 9/26/2020

Results 14 Title Measure ID LFR Flow Rate (gpm) Savings per unit (therm/yr) Shw.

Results 14 Title Measure ID LFR Flow Rate (gpm) Savings per unit (therm/yr) Shw. Flr 004 2. 2 40. 90 Shw. Flr 003 1. 5 59. 49 Shw. Flr 002 1 72. 77 Shw. Flr 001 . 5 86. 04 9/26/2020

TRC Values 15 Measure ID Gas Saved (therms) Rebate Paid TRC Shw. Flr 004

TRC Values 15 Measure ID Gas Saved (therms) Rebate Paid TRC Shw. Flr 004 40. 90 $14. 27 13. 90 Shw. Flr 003 59. 49 $14. 27 20. 22 Shw. Flr 002 72. 77 $14. 27 24. 73 Shw. Flr 001 86. 04 $14. 27 29. 24 Title 9/26/2020

Issues and Concerns 16 Abstract Review Comments from the Cal TF ü Workpaper to

Issues and Concerns 16 Abstract Review Comments from the Cal TF ü Workpaper to consider whether reduced flow leads to reduced energy usage, or whether people just use faucets longer, to compensate for reduced flow q q Title Cal. TF researched in medical journals and no studies were found. Based of SCG Custom data, . 5 gpm is the threshold for degradation of customer experience. 9/26/2020

Questions or Comments? 17 Title 9/26/2020

Questions or Comments? 17 Title 9/26/2020