Calvin D. MacCracken | |
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Born | Calvin Dodd MacCracken November 25, 1919 Poughkeepsie, New York, U.S. |
Died | November 10, 1999 79) Hanover, New Hampshire, U.S. | (aged
Alma mater | Princeton University Massachusetts Institute of Technology |
Occupation | Inventor |
Spouses | Martha McCracken Howard (m. 1941,divorced)Mary Burnham (m. 1969) |
Parent(s) | Henry Noble MacCracken Marjorie Dodd |
Relatives | Henry MacCracken (grandfather) |
Calvin Dodd MacCracken (November 25, 1919 – November 10, 1999) was an American inventor who made important contributions to energy storage technology and the construction of ice rinks.
MacCracken was born in Poughkeepsie, New York, to Henry Noble MacCracken, a president of Vassar College, [1] and Marjorie Dodd MacCracken. [1]
Cal MacCracken entered Princeton University at age 16 and graduated in 1940. [2] After briefly working with one of Thomas Edison's sons [3] he attended the Massachusetts Institute of Technology, where he earned a degree in mechanical engineering.
From college, MacCracken went to work at General Electric Corporation, where he designed the first combustion chamber and throttled the first jet engine. [2]
In 1947, MacCracken left General Electric to found Jet Heat Inc. (now known as CALMAC Corp.) in Englewood, New Jersey. In the following 50 years as CEO of CALMAC, he produced over 250 inventions and had 80 patents.
MacCracken is best known for his work in energy storage and ice rinks. He developed the IceBank® energy storage system, [4] a form of thermal energy storage used to cool buildings by making ice at night when electricity rates are less expensive. IceBank® energy storage functions like a battery for a building's air-conditioning system. IceBank® saves dramatically on the cost to cool buildings by reducing a building's on-peak use of electricity. The IceBank ice battery system uses standard cooling equipment plus an energy storage tank to shift all or a portion of a building's cooling needs to off-peak, nighttime hours. During off-peak hours, ice is made and stored inside IceBank energy storage tanks. The stored ice is then used to cool the building the next day. IceBank® offers a critical service to grid, since air-conditioning is the main culprit behind spikes in peak electrical demand. This on-peak reduction decreases the need to build new power plants or turn on expensive “peaker” power plants. [5] Over 1GW of IceBank energy storage is used in over 4,000 installations in 60 countries for commercial buildings, schools, government buildings, hospitals, hotels and retail. [6]
MacCracken also invented the IceMat ice rink. [7] This ice rink system was placed at over 2,000 ice rinks worldwide, including the one at Rockefeller Center in New York City. [8] IceMat creates uniform ice with dramatic reduction in pumping power. IceMat rolls out like a carpet and connects to a refrigeration unit for quick installation at both temporary and permanent ice rinks. This flexible design has since become the industry standard for ice rinks. [9] MacCracken also invented the SunMat roll-out solar collectors, comfort controls for space suits used by the Apollo program, the JetHeet furnace, the AquaJet water powered sump pump, the KPad for burn victims, the HI-V high velocity furnace with flexible duct system for adding central heating and air conditioning to homes and the Roll-A-Grill hot dog cooker.
Another of MacCracken's inventions was the Alumazorb low-emissivity ceiling [10] that dramatically reduces radiant heat loads from the warm ceiling to the cold ice below, reducing energy consumption for freezing ice by up to 30 percent.
MacCracken was so far head of his time, that on a “futuristic” 1953 T.V show [11] entitled 2000 A.D., he correctly predicted, in detail, the coming of the Solar Age. In 1955, MacCracken attended the first Solar Energy Convention in Arizona. [12]
On November 10, 1999, MacCracken died of pneumonia at a retirement community in New Hampshire. [1]
MacCracken was an 11-time national squash champion and local councilman. In the 1960s, he appeared in TV commercials for Ballantine Ale that were run by the P. Ballantine and Sons Brewing Company. [13] Author of the book "A Handbook for Inventors", [14] MacCracken was responsible for 80 patents. [15]
MacCracken was honored for his contributions to ice sports through posthumous receipt of the Ice Skating Institute’s Frank J. Zamboni Award. [16] He was an inaugural inductee into the New Jersey Inventors Hall of Fame [17] and was inducted in the ASHRAE Hall of Fame in 2016, [18] for his contributions to the growth of ASHRAE. (Interestingly, MacCracken's grandfather Henry M. MacCracken originally coined the term "Hall of Fame") [19]
Today his son, Mark M. MacCracken continues in his father's legacy as CEO of CALMAC. [20] CALMAC Corp. boasts over 1GW of energy storage and 2000 ice rinks have been installed in 60 countries. [21]
Heating, ventilation, and air conditioning (HVAC) is the use of various technologies to control the temperature, humidity, and purity of the air in an enclosed space. Its goal is to provide thermal comfort and acceptable indoor air quality. HVAC system design is a subdiscipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics, and heat transfer. "Refrigeration" is sometimes added to the field's abbreviation as HVAC&R or HVACR, or "ventilation" is dropped, as in HACR.
A hypocaust is a system of central heating in a building that produces and circulates hot air below the floor of a room, and may also warm the walls with a series of pipes through which the hot air passes. This air can warm the upper floors as well. The word derives from Ancient Greek hupó'under' and kaustós'burnt'. The earliest reference to such a system suggests that the Temple of Ephesus in 350 BC was heated in this manner, although Vitruvius attributes its invention to Sergius Orata in c. 80 BC. Its invention improved the hygiene and living conditions of citizens, and was a forerunner of modern central heating.
Solar thermal energy (STE) is a form of energy and a technology for harnessing solar energy to generate thermal energy for use in industry, and in the residential and commercial sectors. Solar thermal collectors are classified by the United States Energy Information Administration as low-, medium-, or high-temperature collectors. Low-temperature collectors are generally unglazed and used to heat swimming pools or to heat ventilation air. Medium-temperature collectors are also usually flat plates but are used for heating water or air for residential and commercial use.
Ventilation is the intentional introduction of outdoor air into a space. Ventilation is mainly used to control indoor air quality by diluting and displacing indoor pollutants; it can also be used to control indoor temperature, humidity, and air motion to benefit thermal comfort, satisfaction with other aspects of the indoor environment, or other objectives.
Frank Joseph Zamboni Jr. was an American businessman and inventor whose most famous invention is the modern ice resurfacer, with his surname being registered as a trademark for these devices.
Heat recovery ventilation (HRV), also known as mechanical ventilation heat recovery (MVHR) is a ventilation system that recovers energy by operating between two air sources at different temperatures. It is used to reduce the heating and cooling demands of buildings.
Thermal energy storage (TES) is the storage of thermal energy for later reuse. Employing widely different technologies, it allows surplus thermal energy to be stored for hours, days, or months. Scale both of storage and use vary from small to large – from individual processes to district, town, or region. Usage examples are the balancing of energy demand between daytime and nighttime, storing summer heat for winter heating, or winter cold for summer cooling. Storage media include water or ice-slush tanks, masses of native earth or bedrock accessed with heat exchangers by means of boreholes, deep aquifers contained between impermeable strata; shallow, lined pits filled with gravel and water and insulated at the top, as well as eutectic solutions and phase-change materials.
Underfloor heating and cooling is a form of central heating and cooling that achieves indoor climate control for thermal comfort using hydronic or electrical heating elements embedded in a floor. Heating is achieved by conduction, radiation and convection. Use of underfloor heating dates back to the Neoglacial and Neolithic periods.
A ground source heat pump is a heating/cooling system for buildings that use a type of heat pump to transfer heat to or from the ground, taking advantage of the relative constancy of temperatures of the earth through the seasons. Ground-source heat pumps (GSHPs) – or geothermal heat pumps (GHP), as they are commonly termed in North America – are among the most energy-efficient technologies for providing HVAC and water heating, using far less energy than can be achieved by burning a fuel in a boiler/furnace or by use of resistive electric heaters.
A chilled beam is a type of radiation/convection HVAC system designed to heat and cool large buildings through the use of water. This method removes most of the zone sensible local heat gains and allows the flow rate of pre-conditioned air from the air handling unit to be reduced, lowering by 60% to 80% the ducted design airflow rate and the equipment capacity requirements.
John Ingle Yellott was an American engineer recognized as a pioneer in passive solar energy, and an inventor with many patents to his credit. In his honor the American Society of Mechanical Engineers (ASME) Solar Division confers a biannual "John I. Yellott Award" which "recognizes ASME members who have demonstrated sustained leadership within the Solar Energy Division, have a reputation for performing high-quality solar energy research and have made significant contributions to solar engineering through education, state or federal government service or in the private sector."
Pumpable icetechnology (PIT) uses thin liquids, with the cooling capacity of ice. Pumpable ice is typically a slurry of ice crystals or particles ranging from 5 micrometers to 1 cm in diameter and transported in brine, seawater, food liquid, or gas bubbles of air, ozone, or carbon dioxide.
Mary Engle Pennington was an American bacteriological chemist, food scientist and refrigeration engineer. She was a pioneer in the preservation, handling, storage and transportation of perishable foods and the first female lab chief at the U.S. Food and Drug Administration. She was awarded 5 patents, received the Notable Service Medal from President Herbert Hoover and the Garvin-Olin Medal from the American Chemical Society. She is an inductee of the National Inventor's Hall of Fame, the National Women's Hall of Fame and the ASHRAE Hall of Fame.
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Underfloor air distribution (UFAD) is an air distribution strategy for providing ventilation and space conditioning in buildings as part of the design of a HVAC system. UFAD systems use an underfloor supply plenum located between the structural concrete slab and a raised floor system to supply conditioned air to supply outlets, located at or near floor level within the occupied space. Air returns from the room at ceiling level or the maximum allowable height above the occupied zone.
Ice storage air conditioning is the process of using ice for thermal energy storage. The process can reduce energy used for cooling during times of peak electrical demand. Alternative power sources such as solar can also use the technology to store energy for later use. This is practical because of water's large heat of fusion: one metric ton of water can store 334 megajoules (MJ) of energy, equivalent to 93 kWh.
A high-volume low-speed (HVLS) fan is a type of mechanical fan greater than 7 feet (2.1 m) in diameter. HVLS fans are generally ceiling fans although some are pole mounted. HVLS fans move slowly and distribute large amounts of air at low rotational speed– hence the name "high volume, low speed."
Radiant heating and cooling is a category of HVAC technologies that exchange heat by both convection and radiation with the environments they are designed to heat or cool. There are many subcategories of radiant heating and cooling, including: "radiant ceiling panels", "embedded surface systems", "thermally active building systems", and infrared heaters. According to some definitions, a technology is only included in this category if radiation comprises more than 50% of its heat exchange with the environment; therefore technologies such as radiators and chilled beams are usually not considered radiant heating or cooling. Within this category, it is practical to distinguish between high temperature radiant heating, and radiant heating or cooling with more moderate source temperatures. This article mainly addresses radiant heating and cooling with moderate source temperatures, used to heat or cool indoor environments. Moderate temperature radiant heating and cooling is usually composed of relatively large surfaces that are internally heated or cooled using hydronic or electrical sources. For high temperature indoor or outdoor radiant heating, see: Infrared heater. For snow melt applications see: Snowmelt system.
Henry Noble MacCracken was an American academic administrator who was the fifth president of Vassar College in Poughkeepsie, New York, serving from 1915 to 1946 as the first secular president of the college. MacCracken's term as president of Vassar College is the longest in the college's history.
MacCracken may refer to: