Energy Systems Laboratory: Research in Energy Efficient Buildings. David E. Claridge Director

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1 Energy Systems Laboratory: Research in Energy Efficient Buildings David E. Claridge Director

2 ESL Faculty Prof. David Claridge, Director Prof. Charles Culp, Assoc. Dir., Continuous Commissioning Support Prof. Jeff Haberl, Assoc. Dir., Texas Emissions Reduction Program Prof. Bryan Rasmussen, Assoc. Dir., Industrial Assessment Center Dir. Prof. Mike Pate, Assoc. Dir., Riverside Energy Efficiency Laboratory Dir.

3 Continuous Commissioning Date Whole Campus Demand (kw) High-Tech Tune-up of Existing Buildings and large Air Conditioning/Boiler Installations Hour

4 CC Development Software Opportunity Assessor Quickly identifies high potential savings opportunities WinAM Detailed assessment, calibration, predict savings Implementer Guides system operational performance improvements Sustainer Monitors system operation/detects which faults occur Validator Determines and verifies savings Dashboard Visualizes performance on-site operations

5 CC R&D Unique equation solver for faster simulation of custom HVAC systems, Unique rapid approach to calibrating the building energy consumption to simulations Total Building Fault Detection with minimal data Total Building Fault Diagnosis with minimal data Calibration of simulations and sensitivity analysis Inferring reheat from EMCS points Building diagnostics using basic energy balance on building New sensor / approach to economizer operation Optimizing the chiller / tower interaction using a hybrid model for chillers/towers BIM applications for CC analysis and diagnostics on Terminal Boxes with limited data on the systems Low DT issues in CHW coils and systems A new metric for HVAC system efficiency Low cost retrofits associated with operational problems Optimal Building pressurization control

6 Industrial Assessment Center Opened 1986 Funded thru 2016 Accomplishments Received numerous awards from DOE Educated 200+ students Performed 600+ assessments Impact ~$200M cumulative savings

7 Texas Emissions Reduction Legislature Has Mandated ESL Program (TERP) Determine building energy code and wind/renewables reduction of air pollution/energy use Code compliance/implementation issues City-proposed code change compliance/code training Technical assistance to municipalities and the legislature Review/analyze new building energy codes/recommend adoption to SECO

8 STATEWIDE SAVINGS FROM CODE COMPLIANCE Savings (2002 to 2009) Electricity - $ 776 million Demand - $1,027 million Total - $1,803 million Increased Costs (2002 to 2009) Costs - $ 670 million Demand Reduction in MW Equal to one power plant Emissions Reduction in ,445 tons-nox/year, (About 800,000 cars) Demand: $1,027 million Electricity Savings: $776 million Total: $1,803 million Demand Reduction Elecricity Reduction

9 TERP Research Development of semi-automatic calibrated residential simulations for home energy audits Development of an improved ground-coupled heat pump model for residential code compliant simulation History and analysis of Peak Heating/Cooling Methods for Building HVAC System Sizing History of building simulation for energy, solar thermal, PV, passive solar, daylighting analysis Development of an improved multi-layer window model for codecompliant construction Development of improved, web-based code-compliant simulations for residential and commercial buildings. Development of improved hourly methods for calculating NOx emissions savings from energy efficiency and renewable energy projects in Texas

10 Riverside Energy Efficiency Laboratory (REEL) Fan Airflow Performance Vent Cap Testing Facility Duct Performance Sound performance Psychometric testing Heat Transfer Testing Heating and Cooling coil testing ERV core testing facility Refrigerant Performance Refrigerant Properties

11 ENERGY SYSTEMS LABORATORY Texas Engineering Experiment Station Texas A&M University System Membrane Dehumidification and Cooling Technical Concept O H 2 O N 2 2 Selective transmission of H 2 O) Adsorption Diffusion Desorption H 2 O-selective type of zeolite crystal lattice structure Zeolite pore ( nm) Pore size must be small enough to block air permeation by adsorbed H 2 O

12 Membrane Dehumidification System Reduce HVAC energy consumption by removing moisture without water condensation Continuous removal of water vapor through a highly H 2 O-selective and permeable membrane No regeneration No environmental emissions 5

13 Fan Performance Facilities Testing and Research on residential/commercial blowers/fans 30 cfm to 50,000 cfm Energy Consumption and Efficiency Ratings Sone Ratings

14 REEL Psychrometric Performance Test up to 10-ton units ASHRAE 116 and AHRI 210/240, (ISO certified as of 2012) Research on adjustments to duct geometry to reduce test apparatus height

15 Other ESL Research Membrane Enthalpy Recovery Ventilator development Testing and Development of ASHRAE s Performance Metric Protocols Development of BIM to Daylighting/thermal simulation programs Analysis of U.S. Airport Energy Use for the National Academy of Science s Transportation Research Board Modeling and testing of non-symmetric chilled beam systems Analysis of sustainable research facility at McMurdo Base, Antarctica Development of empirical baselines for the U.S. Military Sea Lift Command Modeling of sustainable communities using CHP at grocery stores/multifamily buildings Analysis of low-energy communities for Mexico City Analysis of low energy multifamily housing for China Modeling of chilled beams with under-floor air distribution