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