HGA CORE TEAM
Building Automation
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INTEGRATED APPROACH
OUR COMMITTMENTS
Design for Integration
Framework for Design Excellence
Design for Equitable Communities
Design for Ecosystems
Design for Water
Design for Economy
Design for Energy
Design for Well-Being
Design for Resources
Design for Change
Design for Discovery
TECHNOLOGY EXPERTISE RESOURCE PANEL
SELECTED ENERGY PLANNING CLIENTS
INTEGRATED ENERGY PLANNING CASE STUDIES
Tactical
Implementable
Practical
UW HEALTH RECEIVED BETTER BUILDINGS AWARD FOR ENERGY REDUCTION
Challenge Partners with Greatest Energy Savings SAVINGS SINCE BASELINE YEAR
100% RENEWABLE ENERGY ACTION PLAN
COST OF CO2 REDUCTION MARGINAL ABATEMENT COSTS
GRID EMISSIONS PROJECTIONS EXAMPLE
2021
GRID EMISSIONS PROJECTIONS EXAMPLE
Cambium and AVERT Tools
MICROGRID IMPLEMENTATION
• 200,000 SF Surgery Center/MOB
• Completed in 2020
• Comprehensive Planning to grow into a bed tower potentially with ED and Women’s Health
• Engineering System Design – Planned for Growth
• I94 Corridor Growth
SOLAR PV AT PLEASANT PRAIRIE
CURRENT ASC/MOB
FUTURE MASTER PLAN - HOSPITAL
ALLIANT ENERGY RENEWABLE ENERGY PROGRAM ANALYSIS EXAMPLE
ALLIANT ENERGY RENEWABLE ENERGY PROGRAM ANALYSIS EXAMPLE
INTELLIGENT HOSPITAL INTEGRATED AUTOMATION NETWORK DIAGRAM
INTEGRATING FACILITY MANAGEMENT AND ENERGY PERFORMANCE
• Work together with Facilities and IT
• Coordinate BAS upgrade cycles with equipment
• Repair/Reprogram/Replace
• Equipment and Controls
• Reliable
• Efficient
• Connected
• Data Driven Decisions
• FDD and Analytics
• Dashboarding
• Reporting
APPLETON INTERNATIONAL AIRPORT ENERGY GOALS
FOREST EDGE ELEMENTARY SCHOOL:
ZERO ENERGY
NET
Technology Award Winner Verified Net Zero Energy Building
DESIGN PROCESS: EUI TARGET
SOLAR PV
INTERESTING DESIGN ELEMENTS
BuildingLoads
Utility Feed
Microgrid Feed
Battery
Solar PV
GROUND-SOURCE HEATING & COOLING PORTFOLIO
Geo design for 70 facilities, comprising 7,400,000 SF
30 facilities in the Dane County area
Designing geo on both coasts of the U.S.
Most are 100% heated by geo
No natural gas service needed
CUP DECARBONIZATION
Decarbonization vs Electrification
Maintain Steam System vs Conversion from Steam to Low Temperature Hot Water (LTHW)
Diesel Emergency Generators
CUP DECARBONIZATION
Why Convert to Low Temperature
Hot Water?
Phased Approach to LTHW
Conversion
Full Central Plant, Distribution System, and Building Systems
Upgrade
CUP DECARBONIZATION
Why Utilize Heat Recovery Chillers?
•Electrify heating loads using as little as 25% of the energy as an electric boiler
•Provides simultaneous heating and cooling
•Can be incorporated into geothermal systems
Challenges with Heat Recovery Chillers
• Cost
• Maintenance
• Equipment Selection and System Design
• Controls
CUP DECARBONIZATION EXAMPLE - UVA
UVA Heat Recovery Implementation
•Installation of HRCH
•Implementation of HGA’s Predictive Optimization
•Reset from high temperature(200°F+) to Low Temperature (135°F) to maximize the use of HRCH
•Developed metrics for evaluatingHRCH systems
CUP DECARBONIZATION – EQUIPMENT SELECTION
Select equipment based on the building load profile (peak loads, minimum loads, simultaneous loads) and temperature requirements
CR= Condenser Rejected BTU/ Evap Absorbed BTU
CR=1+ 1/(COPh-1)
Clg Load * CR = Heating Load
CUP DECARBONIZATION – CONTROLS
1. HRCH is controlled to the minimum of Phhwl, Pchwl*CR, HRCH Capacity
a. Pchwl can be controlled via FHRE
b. HRCH Capacity is a function of the #HRCH Online, and evap and cond
Temperatures
2. Control HRCH condenser flow so that Qhr = Phhwl
3. Control HRCH evaporator flow to maintain evaporator leaving temperature at setpoint
4. Calculate offset load as a function of (Thhwset - T_blr ent)
5. Add offset load to CHW system through FHRE or from central loop
Qc=m*Cp*dt Qhr=m*Cp*dt HHWR HHWS CHWR CHWS Phhwl= m*Cp*dt Pchwl=m *Cp*dt
TH1 HRCH Heating Source Cooling Source TH2 FH1 TH3 TH4 TH5 FH2 TC1 TC5 FC2 FC1 TC4 TC1
CUP DECARBONIZATION EXAMPLE - LACCD
CUP DECARBONIZATION EXAMPLEMETROHEALTH
HOSPITAL IN CLEVELAND, OH
QUESTIONS?
Sustainability Passion
Community Partner
HGA •
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Depth of Experience
Fresh Perspective
Alex Slides- UW Eau Claire Decarbonization Study
DECARBONIZE STEAM HEATING SYSTEM
Alex Slides- UW Eau Claire Decarbonization Study
LIFE CYCLE AND CARBON ANALYSIS
MICROGRID SIZING/OPTIMIZATION
CURRENT CLINIC RESULTS
