Brian Cullinane

1
SMALL TONNAGE ABSORPTION CHILLERS (UNDER 100 tons)
Brian Cullinane

• Family Business
• 25 years selling
• Gas A/C
• 5 Employees
• New England
• Territory
• REP/DIST. For
• ROBUR Gas Chillers

2
Air Cooled Absorption Chiller

• Natural or Propane Gas
• Air cooled
• Produces 45ºF c.w.
• Micro Processor
• controlled
• High Efficiency G.A.X.
• Absorption Principal
• (Ammonia Water)

5 - ton Model ACF 60
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Absorption Cycle
Ammonia(NH3)/water absorption principal
with (NH3) acting as the
Refrigerant
4
Equipment Description
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Equipment Description

• 3 - Ton 5-ton Model
• 115 v on 3-ton
• 208/230 v 1Ø on 5-ton
• 3-ton is 23 w x 44 d x 45 H
• 5-ton is 44 w x 48 d x 54 H
• 45ºF supply chilled water
• AIR COOLED - no towers

6
Equipment Description

• 10, 15, 20 25 ton Models
• Factory piped wired on skid
• 208/230v- SINGLE PHASE
• Factory staged in 5-ton increments
• AIR COOLED - no cooling towers

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Equipment Description

• 5-ton Chiller/ Heater
• 165,000 btu/hr input (HTG)
• Available with Pump expansion tank
• 208/230 v 1Ø
• Air Cooled
• 48 w x 54 d x 48 H

8
PROS

• Balanced customer energy profiles - Economics
• Design flexibility - chilled water
• Expected lifetimes 2- 3 times comparable Dx
• Environmental Benefits - Natural gas vs Power
  plants, no ozone depleting chemicals such as
  CFCs, HCFCs
• Remote locations - Chilled water underground

9
PROS

• Reduce size of back up generators
• Reduce electrical upgrades
• Great for Retrofit Applications - Piping vs Duct
  work
• Can operate on LP gas to satisfy dual fuel
  requirement for critical care wings
• Modular design has built in Redundancy
• Minimal power requirement -1 Ø

10
CONS

• Low Market Awareness of benefits - End
  user/Architect/Engineer/Utility Personnel.
• Higher Initial Investment approximately 500/ton
  more than direct expansion equipment.
• Sporadic Utility Support - Rebates, Sales
  programs, special summer discount rates.

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APPLICATIONS

• Custom Residential gt 5,000 sq. ft. with 4
  zones or more single phase power up to 25-
  tons
• Commercial Buildings lt 25,000 sq. ft. with
  multiple zones Offices / Institutional /
  Critical Care
• Industrial Process Cooling Chilled water for
  machines processes Laser Cutters, Welding
  Heads, Plating

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APPLICATIONS -ResidentialMetlzer Residence
-Hyannis , Ma

• 10,000 sq. ft
• 15-ton chiller
• Remote
• location behind garage
• 2000 sq. ft
• 5-bay garge
• served by
• 3-ton chiller

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APPLICATIONS -Commercial

• Wiremold Computer Room
• 20-ton 15-ton
• Back Up Generator

• CT Institute for the Blind
• 50-tons ( 2-25-ton units)
• No Duct Work

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APPLICATIONS - Process

• Process Load
• Initial cost less than electric
• Over 100-tons now

Northeast Electronics Milford, CT
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ECONOMICS

• NSTAR Mass W.
  Mass
• Electric Electric
• Rate B-7 Rate G-2 Rate G-0
• C I C I Small General
• gt 10 kw Demand lt 200 kw lt 349
  kw
• Demand /Kw 24.22 per kw 6.90 per kw
  9.53 per kw
• Energy Charge 8.1per kwh 10.32 per
  kwh 8.46 per kwh
• (w/ Default)
• Gas Cost 0.65 per Therm or 6.50 per MCF

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ECONOMICS - 15 - Ton Unit - WEMCO
2000 Annual Hours
AIR COOLED 1.2 kw/ton 10 SEER
AIR COOLED .62 cop .77 IPLV
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ECONOMICS - 15 - Ton Unit Mass Electric Rate
G-2 2000 Annual Hours
Air-Cooled 1.2 kw/ton 10 SEER
Air-Cooled .62 COP .77 IPLV
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ECONOMICS - 15 - Ton Unit - NSTAR Electric
2000 Annual Hours
19
Mail Sorting Facility Hartford, CT 600-Tons
Gas Chiller - Gas Heating

• 213,320 Annual CCF

• 171,470
• Gas A/C Annual CCF

Gas Air conditioning accounted for 80 Annual
consumption
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Manufacturing Plant 400-Ton Gas Chiller

Separately Metered

• 65500 Gas A/C Annual CCF

Gas Air conditioning accounted for 65500 ccf
Annually
21
Retail Package Store 3-Ton Gas Chiller
- Gas Heating

• 3080 Annual CCF

• 2257 Gas A/C Annual CCF

Gas Air conditioning accounted for 73 Annual
consumption
22
Retail Store 5-Ton Gas Chiller
- Gas Heating

• 4105 Annual CCF

• 1940 Gas A/C Annual CCF

Gas Air conditioning accounted for 47 Annual
consumption
23
School Administration Office Hartford, CT
50-Tons Gas Chiller - Gas
Heating
Separately Metered

• 6584 ccf Gas A/C
• Annual CCF

Gas Air conditioning accounted for 6584 ccf
Annually for 6 months