HTS Engineering - Boston Company Presentation created by Evan Miller. Presentation emphasizes customizability of the HTS product line. HTS Engineering is a Toronto based firm with offices throughout the United States. HTS represents HVAC manufacturers.

1. OFFERING HEAT TRANSFER SOLUTIONS

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

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

4. 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

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

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

7. Air Handling
• Air Handling Systems
– Custom Units
– Heat Recovery Systems
– Natatorium Units
– Desiccant Units

8. Air Handling
• Air Handling Systems
– Custom Units
– Heat Recovery Systems
– Natatorium Units
– Desiccant Units

9. Custom Units
• Quality Product

10. Custom Units
• 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

11. Custom Units

12. Custom Units
• Same-Day Turn-Around On
Comprehensive Designs

13. Custom Units

14. Custom Units

15. Custom Units
UMASS Amherst ISB

16. Custom Units
AT&T
ATT

17. Custom Units
Biogen-1

18. Custom Units
Biogen-2

19. Custom Units
Biogen-3

20. Custom Units
Carnegie

21. Custom Units
Hahnemann

22. Custom Units
Harvard Laser

23. Custom Units
HR Coils

24. Custom Units
Zebrafish

25. 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

26. 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

27. 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

28. 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

29. 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’)

30. Custom Units

31. 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

32. Custom Units

33. 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

34. Custom Units

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

36. Custom Units

37. Custom Units
• Example 5:
– Evaporative Condensed

38. Custom Units
• Patriot Place:
– Air-Cooled Condensing Section

39. Custom Units
• Frisbee Hospital:
– Evap-Cooled Condensing Section

40. Custom Units
• Frisbee Hospital:
– Evap-Cooled Condensing Section

41. Air Handling
• Air Handling Systems
– Custom Units
– Heat Recovery Systems
– Natatorium Units
– Desiccant Units

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

43. 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

44. 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

45. Heat Recovery
CUSTOM ERU W/ FLAT PLATE HEAT EXCHANGERS
Flat plate HX Compressors
Exhaust fan
Filter
Outside Air
Return Air Filter Heat Pump Coil Supply Air
100”h x 84”w x 195”l Side Elevation

46. Heat Recovery
CUSTOM ERU W/ FLAT PLATE HEAT EXCHANGERS

47. 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

48. Heat Recovery
• Enthalpy Wheel

49. 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

50. 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

51. Heat Recovery
• Heat Recovery Coils (Run Around Loop)

52. 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
Vaporous refrigerant is
condensed by the cold air
Condensed liquid flows
back to warm side
Liquid refrigerant is
evaporated by the
warm air
Cold air is warmed by
condensing refrigerant
Warm air is cooled
by evaporating
Sealed tube,tilted refrigerant
filled with refrigerant

53. 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

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

55. Heat Recovery
LASER-1:

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

57. Heat Recovery
LASER-2:

58. Heat Recovery
Grinnell:

59. Air Handling
• Air Handling Systems
– Custom Units
– Heat Recovery Systems
– Natatorium Units
– Desiccant Units

60. Natatorium 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

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

62. 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

63. Natatorium Units

64. Natatorium Units

65. Natatorium Units
NDHU
• 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.

66. Natatorium Units
NDHU

67. Air Handling
• Air Handling Systems
– Modular Units
– Custom Units
– Heat Recovery Systems
– Natatorium Units
– Desiccant Units

68. 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

69. Desiccant Units

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

71. Desiccant Units

72. Dessicant Units

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

74. 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

75. 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

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

77. Chiller Plants
Arsenal Street

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

79. Compressorized/Chiller Systems
• Compressorized Systems/Chiller Systems
– Air, Water, & Evaporative Condensed Chiller/Pump
Packages
– Modular Chiller Systems

80. Compressorized/Chiller Systems
• Compressorized Systems/Chiller Systems
– Air, Water, & Evaporative Condensed Chiller/Pump
Packages
– Modular Chiller Systems

81. 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)

82. Condensing Units/Chillers
CHILLER & PUMPING PACKAGE

83. Condensing Units/Chillers
CHILLER & PUMPING PACKAGE

84. Condensing Units/Chillers

85. Condensing Units/Chillers
Evaporative Condensed Chillers

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

87. Condensing Units/Chillers
Benefits of Evaporative Condensed 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

88. Condensing Units/Chillers
Air Cooled Chiller with Waterside Economizer

89. Condensing Units/Chillers
Air Cooled Chiller with Waterside Economizer

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

91. Condensing Units/Chillers
Multiple / Independent Refrigerant Circuits

92. Compressorized/Chiller Systems
• Compressorized Systems/Chiller Systems
– Air, Water, & Evaporative Condensed Chiller/Pump
Packages
– Modular Chiller Systems

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

94. Modular Chillers
• 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: Six 65 Ton Chillers, One Operating @ 50 tons
vs.
– Data Centers One 300 Ton Screw Compressor Operating @ 50 tons

95. Modular Chillers
The Benefits Of Total Redundancy

96. Modular Chillers

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

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

99. 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

100. 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

101. 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

102. 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

103. 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

104. Precision & Spot Cooling

105. Precision & Spot Cooling

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