Published on June 17th, 2016 | by Jake Richardson
June 17th, 2016 by Jake Richardson
JCPenney’s address in Plano, Texas, has active ice accumulator technology fabricated by CALMAC for 25 years, in adjustment to abate electricity costs. Aftermost year, about $100,000 was saved. Mark MacCracken, CALMAC’s CEO, answered some questions for CleanTechnica.
What is the technology that is used?The technology that is actuality acclimated is CALMAC’s IceBank® activity accumulator tanks that advance an ice on braid centralized cook technology. Essentially the ice-based activity accumulator tanks act as a array for a bartering building’s air-conditioning system, acceptance cooling to be created and stored at night in the anatomy of ice and for use the afterward day.What affectionate of aliment is required?For an ice-based system, aliment is minimal. Already a year, the baptize akin of the tanks needs to be arrested to ensure that it is abounding to the able level. At that time, the absorption and bloom of the calefaction alteration aqueous should be arrested and treated, if necessary. Back there are no affective genitalia in the accumulator tanks, there is around no added “wear and tear” than with a non-storage system. (For a CALMAC® IceBank® Ice Arrangement this is true. Added articles crave altered and added all-encompassing maintenance)
What admeasurement are the containers acclimated to abundance the ice?The IceBank tanks are annular in shape, which is the best able appearance for liquids. They are 8.5 anxiety alpine with a bore of 7.5 feet. To get a faculty of how abundant amplitude this is, two tanks could fit aural a archetypal parking space. The appropriate amplitude is about the aforementioned arrangement of amplitude appropriate for a baptize boiler in a 2,000 sq. bottom home.
Is the technology amid on the rooftops?The tanks are amid in the facility’s automated room, however, the IceBank tanks can be amid about anywhere, including alfresco on a accurate slab, partially buried, absolutely buried, or on a roof of buildings.
Does it abetment air conditioning systems by abbreviation the bulk of electricity they use?The IceBank arrangement allows a architecture to about-face the electricity burning appropriate for a allocation of the daytime cooling bulk to caliginosity hours. This enables bigger appliance of bargain electricity and wind activity by the utility, back wind mainly assault at night. Shifting burning to night-time hours additionally allows a architecture to abstain activity burning during aiguille hours. Electricity bearing during daytime aiguille hours is about not actual able or environmentally friendly. The oldest and about the best communicable deposit ammunition plants are acclimated to accommodated the aiguille appeal that is acquired by air conditioning in the calefaction of the day. Adding added thermal activity accumulator will alter these peaking ability plants after accepting to add added ability bearing to the grid. According to the California Activity Commission, during low demand, off-peak periods, 10-30% beneath activity is bare to bear power, because off-peak ability plants (known as baseload plants) are that abundant added efficient. Thermal activity accumulator reduces antecedent activity burning as well.Is the archetypal anniversary accumulation about $100,000?Savings alter depending on the admeasurement of an accession and the account ante that are actuality implemented. However, already aiguille appeal accuse are factored into the bulk of activity for bartering buildings, cooling is 50% cheaper during caliginosity hours back compared to daytime hours. This account holds accurate alike back barrio accept a appeal allegation with a “flat rate” allegation for electricity. We accept abounding projects that save over $1,000,000 per year.
What is the absolute bulk of accumulation over the 25-year period?We are clumsy to accommodate an estimated absolute accumulation for the 25-year aeon because architecture acceptance changes and electricity ante and filigree accumulation programs change over periods of time. Generally speaking, over the aftermost forty years, according to the Edison Electric Institute (EEI), night-time electricity, back adapted to today’s dollars, has not added in cost.
Is the Plano, Texas, armpit the alone JCPenney area application this technology?The Plano, Texas, armpit is JCPenney’s accumulated address architecture and not a retail location. This is the alone armpit currently application CALMAC’s thermal activity accumulator solution. In abounding malls, however, developers use packaged units which are low in aboriginal cost. Some retailers own or charter backdrop for a continued time and will advance in engineered cooling systems. CALMAC has over 4,000 installations beyond added than 50 countries. Some high-profile barrio in New York City accommodate Rockefeller Center, Bank of America Tower, and 55 Baptize Street. Some retail barter accommodate IKEA, KOHLS, WalMart, Costco, and Nordstrom.
Are added sites or food activity to install their own systems?There are no affairs for added JCPenney sites at this time, which is understandable. Our artefact does not administer to all barrio for assertive abstruse affidavit (the arrangement needs to be based on a axial alarming and not unitary rooftops). Best of JCPenney’s food are not axial systems.
How abundant baptize is acclimated anniversary day, and is the aforementioned baptize acclimated repeatedly?Zero. Yes, the baptize aural a CALMAC IceBank arrangement never leaves the tanks and is reused every day by freezing or thawing. During the off-peak hours, a glycol band-aid is cooled by a alarming and again broadcast through several afar of tubing aural the IceBank tank. This freezes the about 1,600 gallons of baptize which surrounds the tubing aural the tank. Back it is time to air-conditioned a architecture the action works in reverse. The ice that was congenital the night afore is acclimated to air-conditioned the solution. The band-aid is broadcast to an air-handler braid area it cools the air.
Is the arrangement rated in application and megawatts or kilowatt-hours and megawatt hours?IceBank systems are for cooling, so automated engineers amount them in a aggregate of ton-hours and bags (and temperature required). One catchbasin can accept 160 ton-hours, or said addition way, 20 bags of cooling over 8 hours or about 27 bags over six hours. Electrical engineers or ability engineers attending at watts so they attending at the accumulator differently. They attending at it in agreement of how abundant is the accumulator displacing electricity burning and demand. Anniversary architecture uses altered electric cooling technologies so in agreement of watts, it depends. However, as a aphorism of deride one catchbasin can aish about 20 kW to 25 kW of electricity for about 8 hours. As the columnist absolution states, the JCPenney accession food about 4 MW of cooling.
Image Credit: CALMAC
Jake Richardson Hello, I accept been autograph online for some time, and adore the outdoors. If you like, you can chase me on Google Plus.
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