Utility Recovery and Continuous Energy Oversight of the Chilled Water Generation for New York Presbyterian

Transcription

1 Utility Recovery and Continuous Energy Oversight of the Chilled Water Generation for New York Presbyterian Presented by: Joseph Lorino, PE, LEED AP Corporate Director of Engineering New York Presbyterian Hospital & Tim Angerame Director of Business Development utilivisor

2 Today Goal of the utilivisor Implementation at NYPH Description of Facilities utilivisor s Approach 1. Energy Metering and Billing 2. Chiller Plant Optimization Implementation Examples of ECM s and Savings Realized Future Projects as a Result of utilivisor s Success

3 Background New York Presbyterian Hospital (NYPH) NYPH-Cornell (Downtown) NYPH-Columbia (Uptown) Comprises more than eight million square feet in Manhattan. Both campuses provide the following utilities to adjacent users in addition to their own consumption. Chilled water Steam Electricity

4 Background 2,400 Beds 5 Major Campuses 10 million SF 33 Buildings Top 2% Energy User 200 million kwh 2.5 million MMBTUs fuel Peak Demand 42 MW 6 th Energy Star Award

5 Goal of the utilivisor Implementation at NYPH 1. Metering of generated and distributed utilities focusing and steam and chilled water 2. Billing and Recovery of energy distribution to adjacent customers 3. Efficiency of chilled water generation

6 Description of Facilities NYPH (Cornell) NYPH (Columbia) Chilled water capacity Steam Turbine Centrifugals 6,000 6,000 Electric Driven Centrifugals 6,665 6,000 Total Chilled water generation capacity 12,665 12,000 Cogeneration Capacity 7.5 MW N/A

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8 NYPH - Columbia

9 utilivisor s Approach to the Utility Recovery and Chilled Water Generation Optimization The utilivisor Energy Analyst Team reviewed all contracts and cost allocations for utility distribution. All rates and utilities are configured in utilivisor and reviewed every month for generation of bills for adjacent users. This is performed by trained energy analysts, minimizing confusion and inaccuracies. The system generates audits of all utility bills and perform exception reporting to compare any variations with previous months. All data is online and accessible for NYPH as a read only system through utilivisor.

10 Steps Installed utility grade BTU meters and matched RTDs for accurate measurement which was previously nonexistent. Continuously measure chiller plant efficiency at all loads with the manufacturer s design data. Analyze chiller efficiency for various loads and select the most efficient combinations of chillers based on performance and utility cost. Identify and Monetize Control Sequences at varying load points with the facilities changing load profile. All data is online and accessible for NYPH as a read only system through utilivisor, which is technology agnostic. Assist in retraining the operations team.

11 Implementation of utilivisor (Measurement added to both plants) NYPH Cornell NYPH Columbia Industrial grade ultrasonic BTU meter for each chiller X X Steam condensate from Steam Turbine Driven Chillers X X Utility grade electric meters for Chillers, CHW Pumps, CW Pumps and Cooling Towers X X Integration and extraction of multiple building systems Data push via ftp to utilivisor X X X

12 utilivisor Operations Center

13 Examples of Energy Savings Measures within the Plant Developed custom operating sequences and staging of equipment based on efficiency, cost and demand. Identified inconsistent control strategies embedded within the control system; specifically with the pumping sequences. Identified and corrected inaccurate measurement devices which in turn was providing the operations team inaccurate information to optimize the plant. Providing the design engineering team at NYPH accurate, reliable and repeatable data for analysis of future expansion.

14 Savings Realized in 6 Months for NYPH Cornell and Columbia = $1.6 Million

15 Future Projects Steam Metering Installation and Networking of all metered data into the billing system. Boiler Plant Optimization with utilivisor Chilled water distribution commissioning and validation. Addition of chiller within the Columbia Campus.