OFFERING HEAT TRANSFER SOLUTIONS

Who are we? Located in Peabody, MA 9 Degreed Sales Engineers 1 Secretary/Sales Assistant In Business Since 1996

HTS Boston Arsenal St. Novartis South Shore Conservatory Kimball Woods Biogen Harvard Life Sciences Worcester Courthouse Good Samaritan Medical Center

Philosophy Support Engineers With Fast, Quality Design Information Keep Engineers out of Trouble Deliver Quality Systems And Products On Time At Competitive Prices Never Leave An Engineer Or Owner With A System Or Product That Doesn’t Work

Engineering Focus Air Handling Systems Factory Packaged Mechanical Rooms Compressorized Systems/Chiller Systems Additional HVAC Products

Engineering Focus Air Handling Systems Factory Packaged Mechanical Rooms Compressorized Systems/Chiller Systems Additional HVAC Products

Air Handling Air Handling Systems Custom Units Heat Recovery Systems Natatorium Units Desiccant Units

Air Handling Air Handling Systems Custom Units Heat Recovery Systems Natatorium Units Desiccant Units

Custom Units Quality Product

Quality Product Tight Casing Less Than 0.5% Leakage @ 12” S.P. Welded Floors, No Oil Canning Water-Tight, Contains Condensate On Time Deliveries Superior Esthetics With Highest Quality Finish Very Few Site Issues Custom Units

Custom Units

Same-Day Turn-Around On Comprehensive Designs Custom Units

Custom Units

Custom Units

Custom Units UMASS Amherst ISB

ATT AT&T Custom Units

Biogen-1 Custom Units

Biogen-2 Custom Units

Biogen-3 Custom Units

Carnegie Custom Units

Hahnemann Custom Units

Harvard Laser Custom Units

HR Coils Custom Units

Zebrafish Custom Units

100% Outdoor Air Units Packaged DX Units (Air-Cooled or Water Cooled Condensing Sections) (Water-Source Heat Pumps Up To 200 Tons) Natural Gas Heat (Direct or Indirect) Indirect and Direct Evaporative Cooling Custom Units

Double Wall Panelized Casing Results in rigid construction Eliminates leaks Accessible for easy maintenance Frame Welded steel base Extruded aluminum tubing Cast aluminum corners Removable Panels 2” or 4” thick Fiberglass or foam insulation Custom Units

Energy Recovery Flat-plate heat exchangers Energy wheels Heating Indirect gas furnace Direct gas furnace Hot water coil Steam coil Heat pumps Electric Custom Units

Cooling DX coil Chilled water coil Evaporative Cooling Packaged Refrigeration Air cooled condensing unit Water cooled condensing unit Water source heat pump Ground source or Boiler/Tower R22 & R410a Refrigerants Custom Units

Example 1: 50,000 CFM with Flat Plate HX CW Cooling HW Heating Integral gas fired humidification (2,160 lbs/hr) Duct Silencers Heated service vestibule 99.97% HEPA Filters Built in 7 sections for shipment (too wide – 22’) Custom Units

Custom Units

Example 2: 20,300 cfm 66 ton chilled water cooling 66 ton emergency DX cooling (4) scroll compressors UV lights on both cooling coils 12” 95% cartridge final filters SF & EF VFD’s Custom Units

Custom Units

Example 3: Redundant air tunnels, 2000 cfm Common Base Frame Integral Electric to Steam Generator Two 8 ton refrigeration systems hermetic scroll compressors 2 cooling stages each Modulating Hot Gas reheat Custom Units

Custom Units

Example 4: Multi-zone Replacement Project – 12 units 6,400 – 13,500 CFM Dual deck Hot water heat Air cooled Refrigeration Custom Units

Custom Units

Example 5: Evaporative Condensed Custom Units

Patriot Place: Air-Cooled Condensing Section Custom Units

Frisbee Hospital: Evap-Cooled Condensing Section Custom Units

Frisbee Hospital: Evap-Cooled Condensing Section Custom Units

Air Handling Air Handling Systems Custom Units Heat Recovery Systems Natatorium Units Desiccant Units

4 Methods of Heat Recovery Flat Plate Heat Exchangers Enthalpy Wheel Heat Recovery Coils (Run Around Loop) Heat Pipes Heat Recovery

Flat Plate Heat Exchangers Aluminum plates are ribbed or dimpled Plates stacked to create adjacent air flow passages Operation Two air streams pass in close proximity without mixing Sensible energy is transferred through plates Heat Recovery

Flat Plate Heat Exchangers Advantages: Low maintenance No moving parts Wider air passages Reduced fouling risk Lower pressure drop Higher efficiency than heat pipe Less expensive than pipes, wheels Consistent performance over time Easy to clean and inspect Disadvantages: Lower efficiency than heat wheel Sensible energy transfer only Heat Recovery

CUSTOM ERU W/ FLAT PLATE HEAT EXCHANGERS Heat Recovery

CUSTOM ERU W/ FLAT PLATE HEAT EXCHANGERS Heat Recovery

Enthalpy Wheel Variety of Sizes For Different Recovery Capacity Frost Control and Economizer Options Aluminum or Synthetic Construction Advantages: Higher efficiencies (70-80%) than pipes or plates Latent transfer capability Disadvantages: Higher maintenance Higher risk of fouling Odors/other contaminants can be reintroduced to the space (especially nicotine) Particulate matter can be reintroduced to the space Due to leakage/purge, fans must move 10-25% more air Heat Recovery

Enthalpy Wheel Heat Recovery

Heat Recovery Coils (Run Around Loop) Two coils are piped in a loop One coil in cold air stream One coil in warm air stream Liquid coolant circulated with pump between coils Advantages: Supply and exhaust air stream need not be together No possibility of air streams to cross contaminate Disadvantages: Lower efficiency than pipes, plates, wheels Higher total costs Pump consumes energy Glycol required to prevent freezing High FPI required to achieve moderate efficiency Higher pressure drops Prone to fouling Heat Recovery

Heat Recovery Coils (Run Around Loop) Example: 21,000 CFM ERU Brought into building through freight elevator Fit into freight elevator - Max dimensions of 76”H x 76”D x 36”W Split into 10 pieces and 2 remote condensing sections Run around coil for energy recovery 4 circuit, 8 stage, 128 ton water cooled condenser HW heating Heat Recovery

Heat Recovery Coils (Run Around Loop) Heat Recovery

Heat Pipes Refrigerant sealed in finned tube coil Coil split between warm and cold air streams Operation Refrigerant evaporates and condenses to transfer energy Heat Recovery

Heat Pipes Advantages: Side-by-side air flows (better in certain applications) Disadvantages: Uses refrigerants Possibility of refrigerant leakage Tight fin spacing Higher pressure drops Higher risk of fouling Lower relative efficiency than wheels and plates Sensible energy transfer only More expensive than plates, comparable cost to wheels Heat Recovery

Heat Recovery Designed To Condition And Deliver Fresh Air to Either The Space Or The Intake of A Conventional Air Handler LASER-1:

Heat Recovery LASER-1:

Heat Recovery Have An Exhaust Air Blower And Additional Heat Exchanger For Energy Recovery From Exhaust Airstreams LASER-2:

Heat Recovery LASER-2:

Heat Recovery Grinnell:

Air Handling Air Handling Systems Custom Units Heat Recovery Systems Natatorium Units Desiccant Units

Pool consultants, owners, and design engineers experience problems with: Rotting buildings, structural members Sick swimmers Odors Inability to control water chemistry Complicated systems for owners to operate Natatorium Units

The main causes of first four problems have been identified as: Insufficient outside (ventilation) air Ineffective airflow distribution Result: Chloramines buildup Natatorium Units

Maximized Outdoor Air Natural Humidity Control Improved Indoor Air Quality Increased Natatorium Life Decreased Costs Lower Initial Cost Lower Operating Cost Lower Maintenance Cost Natatorium Units

Natatorium Units

Natatorium Units

Dehumidify natatorium with outside air up to approx. 55–60F dewpoint Provide 25% to 50% O/A. Use aux. cooling only when O/A dewpoint above 55-60F. Use heat recovery to minimize operating costs. NDHU Natatorium Units

NDHU Natatorium Units

Air Handling Air Handling Systems Modular Units Custom Units Heat Recovery Systems Natatorium Units Desiccant Units

Concepts and Designs, Inc. (CDI) Ideal For Applications Requiring Dew Point Temperatures of 45oF Or Lower Applications Include: Ice Rinks, Hospital Operating Rooms, Libraries and Archival Storage, Museums, Food Processing Plants & Any Building Requiring Very Dry Air Specializes in 100% O/A Projects Offers Indirect and Direct Fired Natural Gas, Steam or Electric Reactivation Quick Ship Capabilities Desiccant Units

Desiccant Units

1,000 CFM 50,000 CFM 12,000 CFM Dessicant Units

Desiccant Units

Dessicant Units

Engineering Focus Air Handling Systems Factory Packaged Mechanical Rooms Compressorized Systems/Chiller Systems Additional HVAC Products

Boiler Plants Housed In Custom Fabricated Double Wall Enclosures Suitable for Extreme Weather Factory Built Always Costs Less Than Field Built Steam Boilers Or Hot Water Boilers Are Packaged Together With All The Necessary Equipment, Including Breaching and Stacks

Chiller Plants Fast Turn-Around On Quality Designs Housed In Custom Fabricated Double Wall Enclosures Suitable for Extreme Weather Factory Built Always Costs Less Than Field Built Chiller Plants Include Water or Air Cooled Chillers, Pumps, Cooling Towers, Piping, Valves, and Hydronic Specialties Packages are pre-wired with electrical switchgear; drives and control systems

$420K vs. $650K 540 Tons 0.58 kW/Ton Submittal in 2 weeks Delivered in 14 weeks Arsenal Street Chiller Plants

Arsenal Street Chiller Plants

Engineering Focus Air Handling Systems Factory Packaged Mechanical Rooms Compressorized Systems/Chiller Systems Additional HVAC Products

Compressorized/Chiller Systems Compressorized Systems/Chiller Systems Air, Water, & Evaporative Condensed Chiller/Pump Packages Modular Chiller Systems

Compressorized/Chiller Systems Compressorized Systems/Chiller Systems Air, Water, & Evaporative Condensed Chiller/Pump Packages Modular Chiller Systems

Condensing Units/Chillers Anything You Want-Compressorized Systems Up To 500 Tons Chiller/Pump Packages Flexible And Potentially Smaller Footprints Low Sound Chillers (Low RPM Fans and Enclosed Compressors) Low Ambient Chillers For Reliable Year Round Chiller Operation Multiple Flexible Compressor Circuits For Redundancy Or Loading Matching Process Temperatures (High & Low)

CHILLER & PUMPING PACKAGE Condensing Units/Chillers

CHILLER & PUMPING PACKAGE Condensing Units/Chillers

Condensing Units/Chillers

Evaporative Condensed Chillers Condensing Units/Chillers

Air Evap Components 240 compressor HP (16) 2hp 28” Propeller fans 186000 CFM 32 fan HP Total HP = 272 Performance 204 Tons 123°F CT Comp EER = 10.4, Unit EER=9.2 Unit MCA = 469 amps @460/60/3 Max fuse = 600 amps Foot print = 96W x 264L x 100H LwA = 107 dBA Components 220 compressor HP (1) 10hp fan motor 32900 CFM (1) 2hp spray pump Total HP = 232 Performance 207 tons 102°F CT Comp EER = 16, Unit EER=14 Unit MCA = 304 amps @460/60/3 Max fuse = 400 amps Foot print = 140W x 204 x 117 LwA = 93 dBA Condensing Units/Chillers

Higher Efficiencies LEED, ASHRAE 90.1 Reliable Operation Less Total HP, Fewer Motors, Less Air Lower kW Levels Lower Amp Draw Easily Integrated Controls and Pumps Benefits of Evaporative Condensed Chillers Condensing Units/Chillers

Air Cooled Chiller with Waterside Economizer Condensing Units/Chillers

Air Cooled Chiller with Waterside Economizer Condensing Units/Chillers

Evaporative Chiller w/ Wintertime Full Capacity Operation Condensing Units/Chillers

Multiple / Independent Refrigerant Circuits Condensing Units/Chillers

Compressorized/Chiller Systems Compressorized Systems/Chiller Systems Air, Water, & Evaporative Condensed Chiller/Pump Packages Modular Chiller Systems

Modular Chillers Systems Up To 1000 GPM Redundancy Space Efficiency Perfect For Variable Primary Flow Retrofit Applications Superior Part Load Operation

Small Foot Print 44L X 34W X 79H Modules Fit In An Elevator Sized In 30, 50, & 65 Ton Modules Can combine different size modules Minimum 15 Tons Max approx. 300 Tons (2 Compressors Per Module) Application Example: Data Centers Modular Chillers

The Benefits Of Total Redundancy Modular Chillers

Modular Chillers

.71 KW/TON @ FULL LOAD .57 KW / TON @ PART LOAD IPLV UNLOADS DOWN TO 5% CAPACITY Saves $$, Space, Installation, Piping Ideal for phased construction .59 KW / TON @ FULL LOAD 0.5 KW / TON @ PART LOAD IPLV UNLOADS DOWN TO 10% OF CAPACITY ClimaCool Modular Centrifugal Modular Chillers

Engineering Focus Air Handling Systems Factory Packaged Mechanical Rooms Compressorized Systems/Chiller Systems Additional HVAC Products

Variable Frequency Drives EMERSON (SAFTRONICS) 1HP to 800HP Range 6 & 18 Pulse Standard Catalog Products SAFLINK PC/PDA Program For Programming, Troubleshooting, And Monitoring Offer 208, 230, and 460 Volts Feature User Friendly Digital Display Systems Variety of Options for Customization

Humidifiers PURE Humidifier Company Methods Electric Steam to Steam Gas Fired Humidifiers Rapid Absorption (Insty-Pak) Microprocessor Control Systems Stainless Steel All-Welded Construction Eliminate Parts that Require Maintenance

Fans/Lab Exhaust PLASTICAIR VENTURI Fume Hood Exhaust Systems FRP Fans Perchloric Hood Exhaust SKYPLUME Generation II (G2) Tested To Provide Velocity Profile Designed To Withstand Downwash Up To 41 MPH Constructed Entirely Of UV Stable FRP, Will Never Rust

Sound Attenuators Commercial Acoustics Rectangular, Circular, Non-erosive, Industrial, and Axial Fan Silencers Designed to minimize pressure loss in the air stream Offer silencers that prevent the growth and spread of bacterial particles Offer static regain systems

Precision & Spot Cooling UNITED COOL AIR Small Tonnage W/ Application Flexibility Easy Installation Wide Variety Of Commercial & Industrial Applications High Cooling Capacity To Size Ratio for Optimizing Floor Space Reduced Ducting Costs

Precision & Spot Cooling

Precision & Spot Cooling

Additional Information HTS Engineering, Inc. 3 Centennial Drive Peabody, MA 01960 (978) 977-9911 (978) 977-9941 fax