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© Trane 2008 Confidential Eugene Smithart, P.E. Director, Systems and Solutions Trane Commercial Sales.

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Presentation on theme: "© Trane 2008 Confidential Eugene Smithart, P.E. Director, Systems and Solutions Trane Commercial Sales."— Presentation transcript:

1 © Trane 2008 Confidential Eugene Smithart, P.E. Director, Systems and Solutions Trane Commercial Sales

2 Chiller Killer II 2 © Trane 2008 Confidential Agenda Highlights from EarthWise System Seminars A More Detailed/Advanced Look at Three Key Topics: 1.Series Chillers and VPF 2.Ice Storage 3.LAT and Controls Real World Examples of Each The Goal?

3 Chiller Killer II 3 © Trane 2008 Confidential EarthWise™ Systems Emissions Energy Efficiency Products Service/Parts/Solutions Controls

4 Chiller Killer II 4 © Trane 2008 Confidential Low Flow, Low Temperature, High Efficiency Systems +/-$ air handlers+/-$+/-$ controls chillers +/-$ piping ~/–$ ductwork~/–$

5 Chiller Killer II 5 © Trane 2008 Confidential How? Temperature differential Supply temperature Flow ratesFans Ductwork Pumps Piping Lessons Learned?

6 Chiller Killer II 6 © Trane 2008 Confidential Chilled Water/VAV Systems % of HVAC energy consumption Trane EarthWise™ System 83% 93% 70% 83% 89% 80% Atlanta Minneapolis Los Angeles Denver Philadelphia Portland 100% Conventional System LEED ® TRACE

7 Chiller Killer II 7 © Trane 2008 Confidential chilled water plant design... Old “rules of thumb” 44°F chilled water supply 10°F delta T across the evaporator -  that’s at 2.4 GPM/ton 10°F delta T across the condenser -  that’s at 3.0 GPM/ton

8 Chiller Killer II 8 © Trane 2008 Confidential chilled water plant design... New “rules of thumb” 41°F chilled water supply 16°F delta T across the evaporator -  that’s at 1.5 GPM/ton 15°F delta T across the condenser -  that’s at 2.0 GPM/ton Potentially downsized the cooling tower

9 Chiller Killer II 9 © Trane 2008 Confidential How do you know?

10 Chiller Killer II 10 © Trane 2008 Confidential Key Lessons Learned … Cooling towers Cooling coils Pumps Chillers Air handlers Controls

11 Chiller Killer II 11 © Trane 2008 Confidential lessons learned Cooling Tower Performance “!Tower water should be hot!” Towers fans should use VFDs! 2 nd 1st

12 Chiller Killer II 12 © Trane 2008 Confidential “Chilled water should be cold!” lessons learned: Cooling Coil Performance Because of the pump energy savings 3 rd 4 th VFD on the Condenser Water Pump

13 Chiller Killer II 13 © Trane 2008 Confidential Pump Pressure Optimization

14 Chiller Killer II 14 © Trane 2008 Confidential Yes the chillers consume more energy Factory witness testing lessons learned LLH Chiller Performance “Chillers need to be efficient!” but more than offset by the ancillaries

15 Chiller Killer II 15 © Trane 2008 Confidential How can I eliminate the chiller’s kW increase for making colder water?

16 Chiller Killer II 16 © Trane 2008 Confidential Ideal for use with variable primary flow: series chillers How can I eliminate the chiller’s kW increase for making colder water?

17 © Trane 2008 Confidential Chiller Killer II Seminar Lee Cline, P.E. Senior Principal Systems Engineer Trane Commercial Systems

18 Chiller Killer II 18 © Trane 2008 Confidential Series Chillers & VPF What? Variable chilled water flow through the whole system

19 Chiller Killer II 19 © Trane 2008 Confidential Series Chillers & VPF Benefits Variable Primary Flow Reduces pumping costs Reduces first cost Adapts to system flow and temperature changes Advantages Trane chillers Advantages Trane controls Series Chillers Increases system efficiency Expands system range Eliminate Flow Transients Reduces pumping costs Advantage Trane controls

20 Chiller Killer II 20 © Trane 2008 Confidential Series Chillers & VPF Objections It looks risky! We’ve never done it. How do you control it? Is it reliable?

21 Chiller Killer II 21 © Trane 2008 Confidential Series Chillers Thermodynamic staging = efficiency Average kW/Ton = kW/ton 6% better efficiency (10% better than 90.1) $275k list price$272k list price 10” $200/ft 8” $175/ft parallel chillers 44°F 54°F k W /ton series chillers 48°F 40°F 56°F k W /ton k W /ton

22 Chiller Killer II 22 © Trane 2008 Confidential variable primary flow systems Three Key Application Requirements: Chillers must be able to accommodate a change of flow of at least 10% per minute; 30% or even 50% is even better – CTV & RTWD variable flow compensation Chillers need to be selected with adequate flow turndown – Strive for a turn down ratio of at least 2:1 of design to minimum flow. Minimum and maximum flows must not be violated – A bypass is required

23 Chiller Killer II 23 © Trane 2008 Confidential Minimum flow rates – PARALLEL chillers – base system System Load 1 Chiller Loading 2 Chiller Loading 2 Chiller Unloading Chlr 1 Capacity (tons)500 Chlr 1 Design Flow (gpm)1000 Chlr 1 Min Flow (gpm)400 Chiller 1 Turndown2.5to 1

24 Chiller Killer II 24 © Trane 2008 Confidential Minimum flow rates PARALLEL chillers – less turndown 2 Chiller Unloading System Load 1 Chiller Loading 2 Chiller Loading Chlr 1 Capacity (tons)500 Chlr 1 Design Flow (gpm)1000 Chlr 1 Min Flow (gpm)700 Chiller 1 Turndown1.4to 1

25 Chiller Killer II 25 © Trane 2008 Confidential Minimum flow rates SERIES chillers – less turndown 2 Chiller Unloading System Load 1 Chiller Loading 2 Chiller Loading Chlr 1 Capacity (tons)500 Chlr 1 Design Flow (gpm)1000 Chlr 1 Min Flow (gpm)700 Chiller 1 Turndown2.8to 1

26 Chiller Killer II 26 © Trane 2008 Confidential Series Chillers Expand system operating range ChillerPassMin Flow (gpm) RTHD 250 std-eff RTHD 250 hi-eff RTAC 300 std-eff RTAC 300 hi-eff RTWD 120 std-eff RTWD 120 hi-eff gpm/ton [12° dt] (gpm) Turndown ratio gpm/ton [16° dt] (gpm) Turndown ratio

27 Chiller Killer II 27 © Trane 2008 Confidential Series Chillers & VPF What about pumping horsepower? RTAA110 Parallel LoadPump Flow Sys PDHP RTAA100 Series Pump Flow Sys PDw/ CV opt.HP w/opt

28 Chiller Killer II 28 © Trane 2008 Confidential VPF System By-pass flow control lessons Size bypass line for minimum flow Size bypass valve for minimum flow Select DP transducer or flow meter for minimum flow Select chiller proof-of-flow device for minimum flow

29 Chiller Killer II 29 © Trane 2008 Confidential VPF Proof-of-Flow Orange Research Model 1516 DP switch W.E. Anderson H3 series DP switch from Dwyer Thermal dispersion flow sensor - IFM Effector https://eshop2.ifm-electronic.com/EShop/IfmUS/MyAccountView.do

30 Chiller Killer II 30 © Trane 2008 Confidential Proof-of-Flow IFM Effector IFM Effector – Phone: – Website: – Purchase online at: https://eshop2.ifm- electronic.com/EShop/IfmUS/MyAccountView.do Technical resource: – Chad Mosier – HVAC Industry Specialist – Phone:

31 Chiller Killer II 31 © Trane 2008 Confidential Where Else Use Series? ???

32 Chiller Killer II 32 © Trane 2008 Confidential series chillers Ideal application for: Free Cooling

33 Chiller Killer II 33 © Trane 2008 Confidential series chillers Ideal application for: One AFD

34 Chiller Killer II 34 © Trane 2008 Confidential series chillers Ideal application for: Heat Recovery ASHRAE 90.1 Section requires heat recovery for…

35 Chiller Killer II 35 © Trane 2008 Confidential series chillers Ideal application for: Series Counter-Flow

36 Chiller Killer II 36 © Trane 2008 Confidential series chillers & VPF Trane Advantages Chiller minimum flows – Trane chillers use less tubes for a given efficiency – Our compressors ARE more efficient ! System flow rate-of-change – Variable Flow Compensation gives Trane chillers the most robust control in the industry We know how to do it

37 Chiller Killer II 37 © Trane 2008 Confidential series chillers & VPF What did we see? We know what the risks are We done it a lot It is easy to make reliable There are many benefits There are may applications

38 Chiller Killer II 38 © Trane 2008 Confidential Airside: What’s different? Lowers the required air flow by 30-40% Supply air Room setpoint Airside delta T 55°F 75°F 20°F Common practice Low air temp.system 45 – 48°F 77°F 32°F Can cut the airside fan BHP by nearly 50% Drives the need for high efficiency chillers Locks in the low leaving water temperature requirements for chillers

39 SA to occupied space SA to occupied space EarthWise ™ airside system for floor-by-floor applications MA RA OA CA CDQ

40 SA to occupied space SA to occupied space EarthWise ™ airside system for floor-by-floor applications EA MA RA EAOA EA OA CA CDQ Ventilation Reset ASHRAE 62 Fan Optimization ASHRAE 90.1 Floor by Floor Pressurization Fan Optimization

41 © Trane 2008 Confidential CDQ ™

42 Chiller Killer II 42 © Trane 2008 Confidential how it works CDQ Desiccant Wheel ability to hold water vapor high relative humidity, % low Type III (CDQ) Typically at mixed-air conditions Typically at leaving-coil conditions

43 Chiller Killer II 43 © Trane 2008 Confidential Cool, Dry, Quiet (CDQ™) OA RA SA MAMA' water vapor 50°F DB 49°F DP Trane CDQ desiccant wheel CA cooling coil 55°F DB 43°F DP 75°F DB 63°F DP 80°F DB 60°F DP

44 Chiller Killer II 44 © Trane 2008 Confidential dry-bulb temperature, °F wet-bulb temperature, °F 60 CA reheat humidity ratio, grains/lb of dry air RA OA SA MA MA' CA OA100°F DB 74°F WB RA62°F DB 50% RH MA80°F DB 53.5°F DP MA'76°F DB 58.5°F DP CA51°F DB 49°F DP SA55°F DB 42°F DP CDQ requires: less cooling tons less reheat Dryer Wetter Warmer Cooler CDQ

45 Chiller Killer II 45 © Trane 2008 Confidential Cool, Dry, Quiet (CDQ™) O OA SA MA' water vapor CDQ desiccant wheel CA cooling coil 100% RH preheat coil RTWD heat recovery chiller MA 70% RH 38°–45 ° F 90°–140 ° F

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47 Chiller Killer II 47 © Trane 2008 Confidential 10,000

48 Chiller Killer II 48 © Trane 2008 Confidential 9,000

49 Chiller Killer II 49 © Trane 2008 Confidential 0

50 Chiller Killer II 50 © Trane 2008 Confidential

51 Chiller Killer II 51 © Trane 2008 Confidential

52 Chiller Killer II 52 © Trane 2008 Confidential Optimized Controls

53 Chiller Killer II 53 © Trane 2008 Confidential The Four “Money” Control Strategies Fan Pressure Optimization Ventilation Reset Floor-by-Floor Building Pressurization Supply Air Reset

54 Chiller Killer II 54 © Trane 2008 Confidential Wireless Zone Sensors Auto-Commissioning Virtual Graphics next generation VAV box control Three Capabilities That We Must Push Today!!

55 Chiller Killer II 55 © Trane 2008 Confidential Auto-Commissioning Prime Example of What We Can Do Via Intelligent Service

56 Chiller Killer II 56 © Trane 2008 Confidential Virtual Graphics

57 Chiller Killer II 57 © Trane 2008 Confidential Floor Plan

58 Chiller Killer II 58 © Trane 2008 Confidential Chiller-Water VAV Systems

59 Chiller Killer II 59 © Trane 2008 Confidential Chiller-Water VAV Systems

60 Chiller Killer II 60 © Trane 2008 Confidential AdaptiView™ Virtual Graphics on the Equipment

61 Trane Controls What to talk about??? Chiller-Tower Optimization Failure Recovery Auto Rotation VAS AdaptiView Area Control 3D Graphics Auto Calibration TOD Scheduling Variable Flow Flexible Alarming Trend Logs Graphical Trending GraphICS Soft Loading LonTalk Modbus Adaptive Control Primary/Secondary Constant Volume Variable Primary Flow Rapid Power Failure Recovery Process Start Operator Override Enabled Critical Valve Reset Ventilation Optimization Fan Pressure Optimization 2D Graphics Digital Page Alarms Alarms Operator Manuals Electronic Tutorials Factory Training MyTraneControls.Com Demand Control Ventilation TRAQ Dampers Night Economizer SAT Reset StatiTrac Heat Pump Control ICE Mode TR1 Drives Industrial Options Variable Flow Compensation Base Chiller Peak Chiller Swing Chiller Setpoint Control ASHRAE Std 147 Report BacNET Chilled Water Reset Make Available Make Unavailable PPS Points Lists Failure Reset V17 Demo GeoThermal Flow Based Subtract Commissioning Reports

62 Chiller Killer II 62 © Trane 2008 Confidential What to talk about??? Top 3 Control Sales Needs 1. Understand Trane systems’ full capabilities 2. Get control of the control spec 3. Work together “Our offering today is the “deepest” in HVAC system insight and capability” Mark Weldy

63 Chiller Killer II 63 © Trane 2008 Confidential Top 3 Control Sales Needs 1. Know Trane full capabilities  Trane Resource Inventory Guide

64 Chiller Killer II 64 © Trane 2008 Confidential Trane systems full capabilities Trane Resource Inventory Guide List of resources for: – Chilled Water – VAV System – Applied – Tracker Systems Info there includes – Description / Products – Value Classification – Competition – Case Studies – Presentations – Training – Seq of Op – Points Lists – Sales Tools

65 Chiller Killer II 65 © Trane 2008 Confidential Top 3 Control Sales Needs 1. Understand Trane systems’ full capabilities 2. Get control of the control spec

66 Chiller Killer II 66 © Trane 2008 Confidential Top 3 Control Sales Needs 2. Get control of the control spec  Guide Specifications and Sequences of Operation

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68 Chiller Killer II 68 © Trane 2008 Confidential Top 3 Control Sales Needs 2. Get control of the control spec  Pre-Packaged Solutions

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70 Chiller Killer II 70 © Trane 2008 Confidential 2. Get control of the control spec Pre-Packaged Solutions For New and Existing Building jobs Specification Information: – Sequences of operation materials – Generic input/output point lists – Sales sketches offered in Acrobat and AutoCAD formats – Generic product summaries – Sales Notes Technician Information: – Controller programming files – Tracer Summit custom workstation graphics – Commissioning sheets and application notes

71 Chiller Killer II 71 © Trane 2008 Confidential 2. Get control of the control spec Pre-Packaged Solutions VAV AHU WITH HYDRONIC HEATING/COOLING AND PREHEAT AH0001

72 Chiller Killer II 72 © Trane 2008 Confidential 2. Get control of the control spec Pre-Packaged Solutions VAV AHU WITH HYDRONIC HEATING/COOLING AND PREHEAT AH0001

73 Chiller Killer II 73 © Trane 2008 Confidential 2. Get control of the control spec Pre-Packaged Solutions VAV AHU WITH HYDRONIC HEATING/COOLING AND PREHEAT AH0001

74 Chiller Killer II 74 © Trane 2008 Confidential Top 3 Control Sales Needs 1. Understand Trane systems’ full capabilities 2. Get control of the control spec 3. Work together

75 Chiller Killer II 75 © Trane 2008 Confidential Work Together! Why? Remember PPS for Existing Building and Retrofit Work Too!

76 Chiller Killer II 76 © Trane 2008 Confidential Top 3 Control Sales Needs 3. Work Together  PPS Training

77 Trane Controls Go talk about it!!! Chiller-Tower Optimization Failure Recovery Auto Rotation VAS AdaptiView Area Control 3D Graphics Auto Calibration TOD Scheduling Variable Flow Flexible Alarming Trend Logs Graphical Trending GraphICS Soft Loading LonTalk Modbus Adaptive Control Primary/Secondary Constant Volume Variable Primary Flow Rapid Power Failure Recovery Process Start Operator Override Enabled Critical Valve Reset Ventilation Optimization Fan Pressure Optimization 2D Graphics Digital Page Alarms Alarms Operator Manuals Electronic Tutorials Factory Training MyTraneControls.Com Demand Control Ventilation TRAQ Dampers Night Economizer SAT Reset StatiTrac Heat Pump Control ICE Mode TR1 Drives Industrial Options Variable Flow Compensation Base Chiller Peak Chiller Swing Chiller Setpoint Control ASHRAE Std 147 Report BacNET Chilled Water Reset Make Available Make Unavailable PPS Points Lists Failure Reset V17 Demo GeoThermal Flow Based Subtract Commissioning Reports

78 © Trane 2008 Confidential Miscellaneous Musings Creative Applications

79 Chiller Killer II 79 © Trane 2008 Confidential Miscellaneous Musings Fan Pressure Optimization/Critical Zone Reset Pump Pressure Optimization Low temperature air distribution The importance of LEED ®

80 Chiller Killer II 80 © Trane 2008 Confidential Fan Pressure Optimization / Critical Zone Reset

81 Chiller Killer II 81 © Trane 2008 Confidential VAV System with DDC Controls Communicating BAS Fan Speed or Inlet Vane Position Monitors temperature and cfm Duct Pressure Sensor

82 Chiller Killer II 82 © Trane 2008 Confidential VAV System with DDC Controls Communicating BAS Fan Speed or Inlet Vane Position Duct Pressure Sensor % Damper position

83 Chiller Killer II 83 © Trane 2008 Confidential © American Standard Inc Pressure Optimization Control Logic

84 Chiller Killer II 84 © Trane 2008 Confidential Normal Operation

85 Chiller Killer II 85 © Trane 2008 Confidential Reduced Load

86 Chiller Killer II 86 © Trane 2008 Confidential Here is an Excellent Third Party Reference There is a great article on Critical Zone Reset of Fan Pressure in the June 2007 Issue of the “ASHRAE Journal”

87 Chiller Killer II 87 © Trane 2008 Confidential Supply air fans on variable air volume (VAV) systems are typically controlled to maintain static pressure in the duct system at a given setpoint. Since 1999, ASHRAE Standard 90.1 has required that this setpoint be reset for systems with direct digital controls (DDC) at the zone level, specifically: Setpoint Reset. For systems with direct digital control of individual zone boxes reporting to the central control panel, static pressure setpoint shall be reset based on the zone requiring the most pressure; i.e., the setpoint is reset lower until one zone damper is nearly wide open.. “Nevertheless, reset can generate fan energy supply savings on the order of 30% to 50% compared to fixed setpoints.” By Steven T. Taylor, P.E., Fellow ASHRAE ASHRAE Journal June 2007

88 Chiller Killer II 88 © Trane 2008 Confidential Pump Pressure Optimization

89 Chiller Killer II 89 © Trane 2008 Confidential Low Temperature Air Distribution Reduced First Cost Reduced operating Cost Increased Comfort The Proverbial Holy Grail!!

90 Chiller Killer II 90 © Trane 2008 Confidential Typical Objections What about condensation with low temp air? What about cold air “dumping” from diffusers? What about adequate air motion in room?

91 Chiller Killer II 91 © Trane 2008 Confidential Linear Slot Diffuser vs. Typical

92 Chiller Killer II 92 © Trane 2008 Confidential Parallel fan powered box primary air supplyair terminal mixing fan plenumair

93 Chiller Killer II 93 © Trane 2008 Confidential One Unexpected Benefit For Hot and Humid Climates When low temp air systems are designed for degree supply air, relative humidity in the space will typically be in the 35-40% range vs. a traditional system with 55 degree supply air providing relative humidity in the space of 55-60% This can be a huge boost to comfort in the indoor climate in the summer and an improvement to employee productivity

94 Chiller Killer II 94 © Trane 2008 Confidential Example of Low Temp Air Unit First Cost Savings-Chicago School

95 Chiller Killer II 95 © Trane 2008 Confidential SYSTEMSENSZONECOILAHUSAOA%OA LOSSSENSLATENTLOADLAT CFM Cafeteria344,2921,247,30675, , Auditorium292,863664,050114, Band/ Choir189,109440,99777, Fine Arts Rooms196,028647,23390, Administration147,622410,08966,229419, Ist Flr Gym Classes132,203322,83357, Gymnasium nd Flr Gym Classes292,6101,014,475373, , AREA E362,369926,737109, West Ed Wing324,801819,43797, East Wing320,153900,273148, Servery075,09041, TOTAL ,584, ZONE GAINS Example of Low Temp Air Unit First Cost Savings-Chicago School

96 Chiller Killer II 96 © Trane 2008 Confidential Example of Low Temp Air Unit First Cost Savings-Chicago School Reducing Air from 55 to 47 deg – CFM decreased from 397,439 cfm to 289,309 cfm – Actual Installed Cost for AHU Equipment was $2.90 per cfm. – Cost Savings excluding sheet metal and labor was $313,577 on just AHUs ($.68/sq ft).

97 Chiller Killer II 97 © Trane 2008 Confidential We can often increase capacity in a building up to 20-40% by simply changing chillers and utilizing existing pumps, piping, towers, and air units. And reduce operating costs 15%- 40% It’s a system approach! Great Opportunity: Existing Buildings

98 Chiller Killer II 98 © Trane 2008 Confidential LEED ®

99 Chiller Killer II 99 © Trane 2008 Confidential LEED –What are property managers, owners, developers saying? Virtually all prospective tenants are asking if building is “LEED Certified” Tenants are willing to pay a higher rental fee in “LEED Certified” Buildings We need to do “Sustainable Audits” on our existing buildings to analyze potential for “LEED Existing Building” certification Tenants say “Our customers want to do business with “Green” companies” We may not be able to sell the building if it is not “LEED Certified”

100 Chiller Killer II 100 © Trane 2008 Confidential So are owner’s willing to pay more to get their building “LEED Certified”? 25 Story office building Bill had commitment on SWUDs, and VAV Owner decided to go for LEED certification System was upgraded to chilled water with EarthWise design to get LEED Certification Owner spent an additional $1,500,000 ($2 / sq.ft.) to do this Trane bill of material almost doubled What about commission?

101 Chiller Killer II 101 © Trane 2008 Confidential It gets even better! 6 story office building Bill sold SWUDs and VAV Submittal approved and equipment in production when owner decided to go for “LEED Certification” Owner delayed building opening for 6 months while system was redesigned to EarthWise Chilled Water System Owner paid $3,000,000 ( $20 / sq. ft.) in cancellation charges, change orders and upgrade fees to get the building certified! I think we are on to something here

102 Chiller Killer II 102 © Trane 2008 Confidential Ask for the Order Don’t forget to ask for the order!! It’s most important when you work with engineers. Don’t assume “Are you going to be able to use our stuff on your schedules?” “I’d like to help you develop the details on this project, is this going to work for you?”

103 Chiller Killer II 103 © Trane 2008 Confidential Successful People don’t necessarily have the best of everything They just make the best of everything they have.

104 Chiller Killer II 104 © Trane 2008 Confidential In Summary Sell the systems Make sure we use all the tricks we have Embrace LEED Take the Accredited Professional test now Ask for the order

105 © Trane 2008 Confidential Questions or Comments?


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