1Belimo Americas Danbury, Connecticut Belimo Energy Valve™ Investing in Efficiency

Chiller Plants Overall Energy Efficiency 2Belimo Americas Danbury, Connecticut Source: Plant Manufacturer Chiller Plant Efficiency Coefficient ♦ A (Office)4.26 B (Museum)4.78 C (Bank)3.15 D (Office)3.87 Average Chiller Plant Efficiency Coefficient ♦ Actual Delta T [F] ♦ Higher Efficiency Coefficient reflects higher plant efficiency

Chiller Plants Overall Electric Consumption 3Belimo Americas Danbury, Connecticut Chillers Avg 51% Pumps Avg 25.5% Plant A (Office) Plant D (Office)Plant C (Bank) Plant B (Museum)

US Cooling Energy Usage 4Belimo Americas Danbury, Connecticut Source: US Energy Information Administration (eia) How much electricity is used for cooling in the United States? (

Belimo Energy Valve™ is the Solution 5Belimo Americas Danbury, Connecticut The Energy Valve is a: Pressure Independent Control Valve with an integrated Delta T Manager

Belimo Energy Valve™ 6Belimo Americas Danbury, Connecticut Chilled Water Plant Energy Consumption Energy Valve Benefits and Features Risk Free Investment Savings Estimator Case Studies

Belimo Americas Danbury, Connecticut 7 Pressure Dependent 240 GPM 144 GPM 96 GPM Pressure Independent (PI) Delta T Manager + PI Pressure Independent and Delta T Manager Pump Savings in Large Tech Company in NC ♦ Pressure Independent ♦ Pressure Dependent

Benefits of Energy Valve 8Belimo Americas Danbury, Connecticut Saves on Pump and Chiller Energy

Belimo Americas Danbury, Connecticut °F 65 GPM 12°F 55 GPM 330 Coil Power Curve Delta T Curve 1 2 Benefits of using Energy Valve Save Energy

Belimo Americas Danbury, Connecticut 10 Pump hpHp increase = (65/55) 3 65% 12Δ kBTU/hr % GPM55 GPM65 GPM18% Low Delta T Cost of Overflowing the Coil…

Belimo Americas Danbury, Connecticut 11 Low Delta T Cost of Chiller Staging Chiller Plant Efficiency Design delta T=12 o F (54 o F - 42 o F) 360 GPM 1 Chiller, 90% Load (180 Ton) Design Condition 360 GPM Loop flow

Belimo Americas Danbury, Connecticut 12 Chiller Plant Efficiency A drop in delta T causes more GPM Low delta T Delta T=10.4 o F (52.4 o F - 42 o F) 415 GPM 2 Chillers, 45% Load (180 Ton) No change to the load, but a 2 nd Pump and 2 nd Chiller are started. If cooling towers exist, additional cooling tower and pump may start. 415 GPM Loop flow Low Delta T Cost of Chiller Staging

Features of Energy Valve 13Belimo Americas Danbury, Connecticut Power Control maintains coil power regardless of system variations Built-in Energy Metering Multiple Communication Options

Belimo Americas Danbury, Connecticut 14 Power Control Definition What is Power Control ? A control algorithm that creates a Linear relationship between control signal and kBTU/hr output Power Control maintains a coil power set point regardless of pressure and temperature fluctuations Control Signal V10V Coil Power (kBTU/hr)

Belimo Americas Danbury, Connecticut 15 Power Control allows the controller to deliver exact energy to the space 0 to 10 VDC = 0 to 100% kBTU/hr Capacity Coil Power (kBTU/hr) 0V10V Control Signal V 300 Example: 83 Ton AHU 83 Tons ~ 1000 kBTU/hr coil 3 VDC = 300 kBTU/hr 7.5 VDC = 750 kBTU/hr 7.5V 750 Power Control Example

Belimo Americas Danbury, Connecticut 16 Belimo Energy Valve™ Energy Metering By measuring Flow (Electronic Flow Sensors) and Delta Temperature (RTD sensors) the Energy Valve can calculate Power/Energy Power: Q (BTU/hr) =500 x Flow (GPM) x Temperature Change (°F)

Belimo Americas Danbury, Connecticut 17 Belimo Energy Valve™ Energy Metering Usage Energy Measurement Use as System Verification Tool during commissioning. Establishes a baseline performance for operation over time. Contributes to LEED.

Belimo Americas Danbury, Connecticut 18 Belimo Energy Valve™ Communication

Belimo Americas Danbury, Connecticut 19 Belimo Energy Valve™ Communication: Web Server Energy Analysis Flow and Temperature Analysis Comparative Analysis

Low Risk Investment 20Belimo Americas Danbury, Connecticut Energy Efficiency Investing?

Belimo Americas Danbury, Connecticut 21 Energy Efficiency is a Low Risk Investment Source: Laitner, J., Ehrhardt-Martinez, K. and Prindle, W., 2007, “American Energy Efficiency Investment Market”, Energy Efficiency Finance Forum, American Council or and Energy Efficient Economy.

Belimo Americas Danbury, Connecticut 22 Belimo Energy Valve™ Savings Estimator

Belimo Energy Valve Does it really work? 23Belimo Americas Danbury, Connecticut

Belimo Americas Danbury, Connecticut 24 Case Study MIT University Hayden Library - Boston, MA Building and Project Details 150,000 sq. ft. on 3 floors 6 AHU provide majority of the cooling Results Aug 9 - Oct 9, 2010  T = 6.15°F Aug 9 - Oct 9, 2011  T = 12.14°F

Belimo Americas Danbury, Connecticut 25 Case Study University of Miami Hospital Building and Project Details Rosenstiel Building 11 AHUs 2600 Tons of Cooling Over 10,000 GPM Results Delta T raised from 5.5°F to 10.5°F Flow ~ 5600 GPM Estimated $66,000/yr savings Estimated 2.9 year payback

Belimo Americas Danbury, Connecticut 26 Conclusion

Belimo Americas Danbury, Connecticut 27 Information and resources

Belimo Energy Valve™ Thank You 28Belimo Americas Danbury, Connecticut