摘要:
An HVAC&R system including a pumping device configured to circulate a first two-phase medium, a plurality of secondary HVAC&R units, wherein at least one of the plurality of secondary HVAC&R units is operably coupled to the pumping device, and a primary HVAC&R unit operably coupled to at least one of the plurality of secondary HVAC&R units, wherein the pumping device, a portion of the plurality of secondary HVAC&R units, and a portion of the primary HVAC&R unit form a primary loop.
摘要:
A system and method for conditioning air within an air handling system of a building is provided. The building has a hot water source and a cold water source. The conditioning system includes at least one heating-cooling unit connected to the air handling system, a primary water storage device, at least one heat pump, and a controller. The heating-cooling unit, which includes at least one chilled beam, is operable to transfer heat into or out of air passing within the air handling system of the building. The primary water storage device is operable to store a volume of water within a predetermined temperature range. The primary water storage device is in communication with the hot water source and the cold water source. The heat pump is connected to the primary water storage device and the chilled beam. The controller is adapted to selectively drive the heat pump to transfer heat between the primary water storage device and the chilled beam. The controller is also adapted to selectively control the system to transfer heat into or out of the primary water storage device to maintain the water within the primary storage device within the predetermined temperature range.
摘要:
An air conditioning system includes an inlet duct, supply duct, return duct and exhaust duct: a heat exchanger for providing heat transfer between air from the inlet duct and air from the return duct: a cooling coil position in the supply duct: a pan for collecting condensate from the cooling coil; a pump to pump condensate from the pan: and a sprayer coupled to the pump, the sprayer spraying condensate into an air path to increase efficiency of the air conditioning system.
摘要:
A method of cooling an assembly including at least one heat-generating electronic device and at least one peripheral heat-generating device includes cooling the at least one heat-generating electronic device with a primary cooling fluid and cooling the at least one heat-generating electronic device and the at least one peripheral heat-generating device with a secondary cooling fluid. The secondary cooling fluid is distinct from the primary cooling fluid.
摘要:
Cooling systems are provided. The cooling systems include a plurality of cooling units. Each cooling unit has a base having a housing with control components, a cooling tower attached to the base at a first end of the cooling tower, with an inner flow path and an exterior surface, and an air distribution system attached to the cooling tower at a second end. The air distribution system includes an air distribution chamber between first and second enclosures, cool and warm air dispensers are configured in the first enclosure, and a cover is disposed on an exterior of the enclosures. The control components are configured to convey air through the base, the cooling tower, and the air distribution system to dispense air through the air dispensers. At least two of the cooling units of the plurality of cooling units are arranged in a linear arrangement.
摘要:
A thermally driven elastocaloric system and a method for generating at least one of a heating potential and a cooling potential are provided. The thermally driven elastocaloric system includes a first shape memory alloy (SMA) member, a second shape memory alloy (SMA) member, and a connection mechanism configured between the distal end of the first SMA member and the distal end of the second SMA member. The connection mechanism is configured to transfer a force between the first SMA member and the second SMA member. The transfer of a compressive force to an SMA member may generate a heating potential in the SMA member, and the transfer of a tensile force to an SMA member may generate a cooling potential in the SMA member. Whether a compressive force or a tensile force is transferred may be dependent on whether heat is transferred to or from a SMA member.
摘要:
Disclosed is a system for detecting a refrigerant leak in a refrigeration system, wherein a system controller is configured to: execute leak test cycles that include executing a first phase (T1-T2) of transferring refrigerant charge to the evaporator, a second phase (T2-T3) of transferring refrigerant charge to the condenser, and a third phase (T3-T4) of transferring refrigerant charge to the evaporator, determine a reference leak detection cycle time (LDCTREF) by determining a time from a beginning of the second phase (T2) in a first test to an end of the third phase (T4) in the first test, and setting LDCTREF to the time, determine a second leak detection cycle time (LDCT2nd) by determining a time from a beginning of the second phase (T2) in the second test to a second end of the third phase (T4) in the second test, and setting LDCT2nd to the time, determine if a refrigerant leak exists, and communicate the determination.
摘要:
An air handling unit (1) for cooling down an indoor airflow (A1) including at least one fan (3) circulating the indoor airflow inside the air handling unit (1) and a first and a second cooling subsystems (5, 15) including a refrigeration apparatus (50, 150) comprising an evaporator (500, 1500) and a condenser (504, 1504), a first water circuit (52, 152) connected to the condenser and comprising at least one outside heat exchanger (520, 1520) exposed to outside air (A5, A15), a second water circuit (56, 156) connected to the evaporator and comprising at least one indoor heat exchanger (560, 1560) exposed to the indoor airflow, water connection means (62, 64, 162, 164) for selectively connecting, depending on a temperature of the outside air.
摘要:
A hydronic refrigeration system 200 includes: a coolant cooling system 210; an air side cooling load system 230 for cooling of air using coolant from the coolant cooling system 210; and a coolant distribution system 250 for transporting coolant from the coolant cooling system 210 to the air side cooling load system 230 and from the air side cooling load system 230 to coolant cooling system 210; the coolant cooling system 250 comprises multiple chillers 211a, 211b, 211c connected in series, with each chiller 211a, 211b, 211c comprising a refrigeration circuit 212a, 212b, 212c.
摘要:
Cooling units are provided. The cooling units include a base having a housing with control components and a cooling tower attached to the base having an inner flow path and an exterior surface. An air distribution system is attached to the cooling tower and includes an air distribution chamber defined between first and second enclosures, air dispensers are configured in the first enclosure, and air flowing through the cooling tower mixes within the air distribution chamber to form a single stream of air to be dispensed through the air dispenser. The control components are configured to convey air through the base, the cooling tower, and the air distribution system to dispense air through the air dispenser.