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公开(公告)号：US20210048230A1
公开(公告)日：2021-02-18
申请号：US16989880
申请日：2020-08-10
Applicant: INERTECH IP LLC
Inventor： Ming Zhang , John Costakis
Abstract: The cooling systems of the present disclosure include a first refrigerant circuit in thermal communication with a heat load and in fluid communication with a main condenser, a free cooling circuit in fluid communication with the main condenser and a free-cooled water source, a chilled water circuit in fluid communication with the main condenser and an evaporator, and a second refrigerant circuit in fluid communication with the evaporator and a secondary condenser. The free cooling circuit is in thermal communication with the first refrigerant circuit via the main condenser, the chilled water circuit is in thermal communication with the first refrigerant circuit via the main condenser, and the second refrigeration circuit is in thermal communication with the chilled water circuit and the free cooling circuit. The second refrigeration circuit cools a fluid flowing in the chilled water circuit. Methods of operating a cooling system are also disclosed.
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公开(公告)号：US10916966B2
公开(公告)日：2021-02-09
申请号：US16505543
申请日：2019-07-08
Applicant: Inertech IP LLC
Inventor： Jakob Carnemark , Piero Oliveri
Abstract: A power supply system includes an energy storage device electrically connected to a power grid, a power distribution assembly electrically connected to a load, and a power generation device electrically connected to the power distribution assembly. The energy storage device and the power grid are configured to supply electric power having a first voltage range to the power distribution assembly, which in turn, is configured to supply electric power having a second voltage range less than the first voltage range to the load. The energy storage device and the power generation device each are configured to at least temporarily supply a flow of electric power to the power distribution assembly when electric power from the power grid is interrupted such that a substantially uninterrupted flow of electric power is supplied to the load.
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公开(公告)号：US10716241B2
公开(公告)日：2020-07-14
申请号：US14473395
申请日：2014-08-29
Applicant: INERTECH IP LLC
Inventor： Earl Keisling , John Costakis , Gerald McDonnell
IPC: H05K7/20 , F21V33/00 , F21W131/40
Abstract: An air flow distribution system for cooling server racks includes at least one server rack partially defining a hot aisle and a cold aisle, a first air foil disposed above the server rack, and a second air foil disposed above the first air foil. The first air foil and the second air foil are configured to receive air from the hot aisle, and to form turbulent wake patterns in the cold aisle partially defined by the server rack. The air flow distribution system may include a convex ceiling member above the second air foil. A corresponding method includes causing air to be directed between a first air foil disposed above a server rack and a second air foil disposed above the first air foil to form turbulent wake patterns in the cold aisle. An electrical enclosure assembly includes a receptacle and a cover member configured as an air foil.
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44.发明授权公开(公告)号：US10345012B2
公开(公告)日：2019-07-09
申请号：US15715783
申请日：2017-09-26
Applicant: Inertech IP LLC
Inventor： Gerald McDonnell , Earl Keisling
Abstract: Cooling systems and methods use first and second evaporators and first and second liquid refrigerant distribution units to increase the efficiency of the cooling systems and methods. The first evaporator is in thermal communication with an air intake flow to a heat load, and the first liquid refrigerant distribution unit is in thermal communication with the first evaporator. The second evaporator is disposed in series with the first evaporator in the air intake flow and is in thermal communication with the air intake flow, and the second liquid refrigerant distribution unit is in thermal communication with the second evaporator. A trim compression cycle of the second liquid refrigerant distribution unit is configured to further cool the air intake flow through the second evaporator when the temperature of the first fluid flowing out of a main compressor of the second liquid refrigerant distribution unit exceeds a predetermined threshold temperature.
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公开(公告)号：US10254021B2
公开(公告)日：2019-04-09
申请号：US14520322
申请日：2014-10-21
Applicant: Inertech IP LLC
Inventor： Gerald McDonnell , Ming Zhang , John Costakis , Earl Keisling
Abstract: The cooling systems and methods of the present disclosure relate to cooling electronic equipment in data centers or any other applications that have high heat rejection temperature and high sensible heat ratio.
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Patent Agency Ranking
公开(公告)号：US09912251B2
公开(公告)日：2018-03-06
申请号：US15493978
申请日：2017-04-21
Applicant: Inertech IP LLC
Inventor： Subrata K Mondal
CPC classification number: H02M7/487 , H02J9/061 , H02M3/04 , H02M2007/53876
Abstract: Control systems for a multi-level diode-clamped inverter and corresponding methods include a processor and a digital logic circuit forming a hybrid controller. The processor identifies sector and region locations based on a sampled reference voltage vector V* and angle θe*. The processor then selects predefined switching sequences and pre-calculated turn-on time values based on the identified sector and region locations. The digital logic circuit generates PWM switching signals for driving power transistors of a multi-level diode-clamped inverter based on the turn-on time values and the selected switching sequences. The control system takes care of the existing capacitor voltage balancing issues of multi-level diode-clamped inverters while supplying both active and reactive power to an IT load. Using the control system, one can generate a symmetrical PWM signal that fully covers the linear under-modulation region.
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公开(公告)号：US09839163B2
公开(公告)日：2017-12-05
申请号：US15362487
申请日：2016-11-28
Applicant: Inertech IP LLC
Inventor： Earl Keisling , John Costakis , Gerald McDonnell
CPC classification number: H05K7/20745 , H05K7/20736 , H05K7/20781 , H05K7/20827 , Y10T29/49826
Abstract: A modular server rack cooling structure for cooling at least one server in at least one server rack of a data center assembly includes at least a first supporting member and at least a first heat exchanger. The first heat exchanger is coupled to the first supporting member, which is configured to position the first heat exchanger in heat transfer relationship with the at least one server. The first heat exchanger is not attached to the at least one server rack. The modular server rack cooling structure is also applied to a system that includes at least a first rack and at least a second rack disposed opposite from one another to form a hot aisle or a cold aisle. A method is disclosed for installing additional heat exchangers on the support structure of a modular server rack cooling structure to meet increased cooling capacity requirements without requiring additional space.
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公开(公告)号：US20240384936A1
公开(公告)日：2024-11-21
申请号：US18616132
申请日：2024-03-25
Applicant: INERTECH IP LLC
Inventor： Ming Zhang , Ken Nguyen , Doron Shapiro , John Costakis
IPC: F28D7/00 , B23K1/00 , B23P15/26 , F28D1/047 , F28D1/053 , F28F1/02 , F28F1/12 , F28F9/013 , F28F9/02 , F28F21/08 , G06F1/20 , H05K7/20
Abstract: A cooling system includes a heat exchanger having one or more rows of multiple flat tubes, louvered fins disposed between pairs of flat tubes, and special header tube connections to form a counter flow heat exchanger. Heat exchangers having multiple rows may be placed near or close to the server racks and may be in fluid communication with an outdoor heat exchanger having one or more rows. A single-phase fluid is pumped through a fluid circuit or loop, which includes the heat exchangers at the server racks and the outdoor heat exchanger. The single-phase fluid circuit including the heat exchangers at the IT racks may alternatively be in thermal communication with a water circuit that includes an outdoor fluid cooler. The flat tubes can be formed tubes with one or more channels, or extruded tubes with multiple channels. The heat exchangers include header tubes/connections, which facilitate easy fabrication and connection between rows and inlet/outlet, and lower the pressure drop.
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公开(公告)号：US20240381588A1
公开(公告)日：2024-11-14
申请号：US18634783
申请日：2024-04-12
Applicant: Inertech IP LLC
Inventor： John Costakis , Ken Nguyen , Ming Zhang , Doron Shapiro
IPC: H05K7/20
Abstract: Modular air cooling and distribution systems include a fan and heat exchanger cooling assembly and a controller which controls the fan speed based on temperature and velocity measurements. The cooling assembly includes a fluid-to-air heat exchanger and a variable speed fan. The fluid in the fluid-to-air heat exchanger may be propylene glycol or water. The heat exchanger minimizes pressure drop and maximizes heat transfer. The quantity of cooling assemblies is selected to match the indoor cooling requirements. The cooling assemblies are easily assembled together, stacked vertically, and/or connected horizontally, to match the cooling load. If additional cooling capacity is needed in the future, more cooling assemblies can easily be added, and the cooling assemblies may be expanded vertically and/or horizontally. The speed of the fans of the fan and heat exchanger assemblies are controlled based on fluid temperature and fluid velocity measurements, which may be obtained by an anemometer.
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50.发明公开公开(公告)号：US20240291314A1
公开(公告)日：2024-08-29
申请号：US18595165
申请日：2024-03-04
Applicant: INERTECH IP LLC
Inventor： Subrata K. Mondal
Abstract: Systems and methods for supplying power at a medium voltage from an uninterruptible power supply (UPS) to a load without using a transformer are disclosed. The UPS includes an energy storage device, a single stage DC-DC converter or a two-stage DC-DC converter, and a multi-level inverter, each of which are electrically coupled to a common negative bus. The DC-DC converter may include two stages in a unidirectional or bidirectional configuration. One stage of the DC-DC converter uses a flying capacitor topology. The voltages across the capacitors of the flying capacitor topology are balanced and switching losses are minimized by fixed duty cycle operation. The DC-DC converter generates a high DC voltage from a low or high voltage energy storage device such as batteries and/or ultra-capacitors. The multi-level, neutral point, diode-clamped inverter converts the high DC voltage into a medium AC voltage using a space vector pulse width modulation (SVPWM) technique. The UPS may also include a small filter to remove harmonics in the AC voltage output from the multi-level inverter.
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