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Baltimore Aircoil’s Worldwide Air Conditioning Experience

Why Ice Thermal Storage for Air Conditioning Projects?

BAC provides Proven Technology, as a result of:

  • BAC has been involved in the design and manufacture of ice thermal storage for over 25 years
  • Over 2,600 ice thermal storage installations worldwide
  • Dedication to research and development in BAC’s 25,000 square foot (2,323 m2) test facility, designed and built exclusively for the testing and development of heat transfer and thermal storage equipment
  • Twelve patents on ice thermal storage products

The BAC product offering provides system flexibility. Examples include retrofit applications, new construction, low temperature air installations and flexibility in equipment location.

Proven Technology

BAC has successfully applied ice thermal storage technology to more than 2,600 installations worldwide. BAC has the application and system experience to assist you in the design, installation and operation of your ice storage system. BAC has supplied ICE CHILLER® Thermal Storage Products for projects that range in size from 90 to 125,000 ton-hours (0.3 to 441.3 MWh). Installations include office buildings, hospitals, manufacturing processes, schools, universities, sport’s arenas, produce storage facilities, hotels and district cooling applications. Baltimore Aircoil’s success is a result of its diverse product offerings and dedication to research and development are conducted in BAC’s 25,000 square foot (2,323 m2) test facility, designed and built exclusively for the testing and development of heat transfer and thermal storage equipment. Here, research and development engineers test equipment over the broad range of operating conditions encountered in actual use.

The ICE CHILLER® Product line includes a variety of factory-assembled units for HVAC projects. For large applications, where space is limited or factory-assembled units are not cost effective, ICE CHILLER® Thermal Storage Coils are available for installation in field-erected tanks.

The BAC product offering provides system design flexibility. Ice can be built using various refrigerants or glycols on steel coils and is used to provide either chilled water or glycol to the cooling system. This flexibility, combined with a broad range of application experiences, allows BAC to provide a cost-effective product to meet your specific requirements.

Building Types

The success of ice thermal storage in office building applications has received a great deal of publicity and exposure. However, ice thermal storage has been successfully implemented in all types of buildings for many of the same reasons it works in office buildings – lower first cost and lower operating costs. Below are some of the wide variety of building types utilizing ice thermal storage.

Convention Centers

Picture of Baltimore convention center and ice coils being rigging in the parking lot of Camden yards.

Comfort Link_1

Camden Yards Ice Coil

Comfort Link® Plant 1 cools the Baltimore Convention Center, Baltimore, MD

49,055 Ton-hours (173.2 MWh) or 4,086,280 lbs (1,853,537 kg) ice thermal storage plus BAC evaporative condensers.

Sports Complexes

FirstUnionCenter

Wachovia Center, Philadelphia PA 9,500 Ton-hours (33.4 MWh) or 791,350 lbs (358,956 kg) ice thermal storage plus BAC cooling towers

MinuteMaid

Northwind Houston, District Energy Center Union Station cools Minute Maid Park, Houston TX

44,000 Ton-hours (155.3 MWh) or 3,665,200 lbs (1,662,535 kg) ice thermal storage plus BAC cooling towers and evaporative condensers

Ravens

Football Stadium (Ravens), Baltimore MD 13,600 Ton-hours (48 MWh) or 1,132,880 lbs (513,874 kg) ice thermal storage plus BAC cooling towers

MiamiArena

TECO Miami District Cooling Plant cools the American Airlines Arena, Miami FL 17,280 Ton-hours (61 MWh) or 1,439,420 lbs (652,921 kg) ice thermal storage

Alamodome

Alamodome, San Antonio TX 19,300 Ton-hours (68.1 MWh) or 1,607,690 lbs (729,248 kg) ice thermal storage

Hospitals

UnionMemorial

Union Memorial Hospital, Baltimore, MD 7,210 Ton-hours (25.5 MWh) or 599,760 lbs (272,051 kg) ice thermal storage

Colleges and Universities

UPenn

University of Pennsylvania, Philadelphia PA 22,000 Ton-hours (77.7 MWh) or 1,832,600 lbs (831,267 kg) ice thermal storage

Stanford

Stanford University, Palo Alto, CA, 93,200 Ton-hours (329 MWh) 7,763,560, lbs (3,493,602 kg) ice thermal storage

Hotels

AdmiralFell

Admiral Fell Inn, Baltimore, MD 1,200 Ton-hours (4.3 MWh) or 99,960 lbs (45,342 kg) ice thermal storage

Supermarkets

Supermarkets have a much higher load during the day than at night, just like office buildings. Ice storage reduces utility bills. The low relative humidity of the air produced with low temperature water reduces or eliminates the need for reheat.

CrazyPrices

Quinsworth Crazy Prices, Dublin, Ireland 484 Ton-hours (1.7 MWh) or 40,920 lbs (18,561 kg) ice thermal storage

Quinsworth Crazy Prices, Portalaoise, Ireland 350 Ton-hours (1.2 MWh) or 29,155 lbs (13,224 kg) ice thermal storage

Airports

Midway

Midway Airport, Chicago, IL 14,000 Ton-hours (49.4 MWh) or 1,116,200 lbs (528,988 kg) ice thermal storage plus BAC evaporative condensers and cooling towers

Shopping Malls

CosmoSquare

Cosmo Square, Osaka, Japan 29,300 Ton-hours (103.4 MWh) or 2,440,690 lbs (1,107,097 kg) ice thermal storage

Retrofit Applications

Merchandise Mart

MMart

The Merchandise Mart in Chicago, Illinois installed 26,400 Ton-hours (93.2 MWh) of BAC ICE CHILLER® Thermal Storage Coils in a retrofit of the building’s air-conditioning system. The old system no longer had enough capacity to meet the building’s air-conditioning needs. The Merchandise Mart was built in 1930. The increased air-conditioning load on the building from computers, other electrical equipment and increased people density made the old system too small. Ice thermal storage with the low temperature water available allowed the retrofit of the air-conditioning system to go ahead without replacing piping and ductwork. Increasing the temperature ranges on the piping and air distribution system allowed the Merchandise Mart to install an ice thermal storage system at a lower first cost than a conventional system.

Plaza Roble

PlazaRoble

The four office buildings of Plaza Roble – Costa Rica have a peak load of 55 tons (1,932 kW). The first two buildings were built in 2000. The mechanical room is in a central location in the basement of Building 1. As Building 3 and 4 were added in 2002 the central plant is able to handle the load by only adding ice storage (no more chillers). The addition of the ice storage system is estimated to save over $100,000 per year in operating costs. The ice storage system includes BAC ICE CHILLER® Thermal Storage Coils in a concrete tank with a capacity of 2,376 ton-hours (8.4 MWh). This project consists of a primary-secondary HVAC system, with (2) 207 ton (730 kW each) chillers cooled by (2) FXT-250 Cooling Towers. The four secondary pumps move a total of 1,000 GPM (63 lps) of 25% propylene glycol with a 15°F (8.3°C) temperature differential at the air handlers. Below are construction pictures of the ice storage tank. When completed, this area will be landscaped courtyard with a reflecting pool over the tank.

Friendship Annex 3 Office Building

FANX

The HVAC renovation of Friendship Annex (FANX) 2 and 3 received the “1994 Outstanding Engineering Achievement of the Year Award” from the Engineering Society of Baltimore. Ice with low temperature air distribution cools these buildings renovated in 1994. To meet federal guidelines, a comprehensive study of five alternative systems was made using life cycle costing. The analysis showed ice storage with low temperature chilled water and low temperature air to be the most economical system. A total of 15,230 ton-hours (53.8 MWh) of BAC ICE CHILLER® Thermal Storage Units were installed for the two buildings.

Central China Television Station, Beijing

cctv

Central China Television Station in Beijing is the largest and most influential television station in China with eight satellite channels covering all of China. The existing 23-story studio building is about 430,400 ft2 (40,000 m2). The expansion complex includes a new 193,680 ft2 (18,000 m2) office building and a new 21,520 ft2 (2,000 m2) studio hall. The estimated total peak cooling load is 1,290 tons (4,541 kW) including the expansion. 6,188 ton-hours (21.8 MWh) of BAC ICE CHILLER® Thermal Storage Coils are installed in a concrete tank located underground next to the parking lot. Ice storage supplies all of the cooling during on-peak hours.

New Construction

KBC Bank

KBC

The prestigious, state of the art, 976,740 ft2 (90,000 m2) headquarters building was built in 1992 for KBC Bank in Belgium. The 850 ton (3 MW) peak cooling demand is met using a 280 ton (1 MW) chiller and 3,000 ton-hours (10.5 MWh) of BAC ICE CHILLER® Thermal Storage Units. The ice storage system was selected because of its low first cost, low operating cost and high reliability.

Johns Hopkins Applied Physics Lab

Hopkins

Johns Hopkins Applied Physics Lab installed 5,600 ton-hours (19.8 MWh) of BAC ICE CHILLER® Thermal Storage Coils to cool the new Steve Mueller Building which houses offices, labs and clean rooms. Two years later, another 2,800 ton-hours (9.9 MWh) of BAC ICE CHILLER® Thermal Storage Coils were added to cool adjacent office and lab buildings. The ice thermal storage allows the Applied Physics Lab to save over $150,000 per year on their electric bill.

Westbrook Corporate Center

Westbrook

The 1.2 million ft2 (111,480 m2) Westbrook Corporate Center offers tenants outstanding building amenities and also keeps everyone happy with unusually low operating costs that are derived mainly from an energy efficiency ice thermal storage system. Westbrook has 3,600 ton-hours (12.7 MWh) of BAC ICE CHILLER® Thermal Storage Units installed.

Low Temperature Air

Omni Interlocken Resort Hotel

The Omni lnterlocken Resort Hotel just outside of Denver was designed with a low temperature air and water system using BAC ICE CHILLER® Thermal Storage Units. The challenge was to design a high-quality HVAC system sensitive to building aesthetics, which would provide good guest comfort, low operating/maintenance costs and could be constructed within a tight construction budget. The first conceptual design was a four-pipe fan coil system for the hotel rooms with air-cooled chillers and rooftop air-handler units for the public spaces. The final design was a low temperature air system with BAC Modular BAC ICE CHILLER® Thermal Storage Units. This low temperature air system was $500,000 less than the original conceptual design. In addition, the hotel’s energy bills are $100,000 less than with a conventional system.

State Power Management Building

StatePower

Located at West Chang An Avenue and Xi Dan Street in Central Beijing, the $180 million State Power Management Building is the headquarters office for the State Power Company, the nation’s largest corporation. By utilizing ice thermal storage and low temperature air distribution technologies, the building owner and occupants realize significant benefits including lower first cost. Lower energy cost, better energy efficiency, and better indoor air quality and comfort.

Kobe Kanden Building

The Kanden Building is owned and operated by the Kansai Electric Power Company, the Osaka area utility. The former building was removed after being seriously damaged in the 1995 earthquake in Kobe. The new Kanden Building was built as a symbol of Kobe’s recovery, and to be earthquake proof and energy efficient. The building has several energy efficient features including cold air distribution and 6,282 ton-hours (22.2 MWh) of BAC ICE CHILLER® Thermal Storage Coils in a concrete tank under the sub-basement. The net energy reduction from using cold air distribution is 30%.

Shanghai Science and Technology Museum

Science&Technology

As part of their state-of-the-art approach, Shanghai Science and Technology Museum incorporated 9,240 ton-hours (32.6 MWh) of BAC ICE CHILLER® Thermal Storage Units and (4) BAC 33620 and 15250 Cooling Towers in the building design to demonstrate the benefits of ice thermal storage technology. Utilizing low temperature fluid available from BAC ice storage equipment, the Museum incorporated cold air distribution technology to reduce equipment cost and energy cost while improving occupant comfort. The Shanghai Science and Technology Museum celebrated its grand opening as the meeting site for the Asia-Pacific Economic Cooperation (APEC) Summit in October 2001. Expected to be one of the major tourist attractions of the world, the futuristic Shanghai Science and Technology Museum will serve as an educational institute to promote further advances in science and technology.

Villa Julie College

Villa Julie

BAC’s Modular BAC ICE CHIILLER® Thermal Storage Units were part of an expansion that doubled the size of this private college. The new facilities added 135,700 ft2 (12,620 m2) of space to the campus and include a 400-seat auditorium and theater, gymnasium with showers and locker rooms, student center, video center, academic and computer classrooms, kitchen and administrative offices. The architect designed the new buildings with the intention that the structure be part of the visual space. This reduced the space allotted for the mechanical equipment. The engineer designed a low temperature air system that delivers 45°F (7°C) air temperature to VAV series fan powered boxes. The use of smaller piping and ductwork made it possible to avoid architectural changes that would affect the aesthetics of the design.

Equipment Location

The following shows the flexibility in location Modular BAC ICE CHILLER® Thermal Storage Units.

Custom coils can be built to fit to a variety of customer supplied tanks as shown in the Examples are of the District Cooling Section of this website.

Ice Chiller_1

In this facility, the BAC ICE CHILLER® Thermal Storage Units were located outdoors with the air-cooled chillers. The BAC ICE CHILLER® Thermal Storage Units were on a concrete slab.

These units sit on a concrete pad, enclosed with a fence and situated just outside of the equipment room.

Ice Chiller_2

In this facility, the BAC ICE CHILLER® Thermal Storage Units were located in the basement of an underground parking garage.

Ice Chiller_3

On this building, the BAC ICE CHILLER® Thermal Storage Units are located on the roof.

Ice Chiller_4

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