Abstract: A motor current detecting device includes a first wire, an instantaneous current detecting unit, an average electric current detecting unit, and a calculation unit. The first wire is configured and arranged to carry flow of a motor current that has been passed through a motor and a drive current that has been passed through a motor drive unit to drive the motor. The instantaneous current detecting unit is configured and arranged to detect an instantaneous value for a sum of the motor current and the drive current flowing on the first wire. The average electric current detecting unit is configured and arranged to detect an average value of the sum of the motor current and the drive current flowing on the first wire. The calculation unit is configured to calculate the motor current on the basis of the instantaneous value and the average value.

Abstract: Systems and methods of automatically operating dehumidifiers in response to dehumidifier operating conditions are disclosed herein. A method of operating a dehumidifier configured in accordance with one embodiment includes directing air flow through the dehumidifier at a first volumetric flow rate while the dehumidifier is operating at a first operating condition. The method further includes changing the first volumetric flow rate to a second volumetric flow rate when the first operating condition of the dehumidifier changes to a predetermined second operating condition.

Abstract: An air conditioning system for providing air conditioning to the interior of an automotive vehicle with a mixing chamber designed to create, by controlled mixing of a warm and of a cool partial air flow, at least one warmer and one cooler air-conditionable air flow. The flow paths of the warm partial air flow and of the cool partial air flow intersect in the mixing chamber.

Abstract: A process for controlling operation of a heating, ventilation and air conditioning system broadly comprises providing a heating, ventilation and air conditioning system having an evaporator, a condenser, a compressor having an inlet and an outlet, and at least one flow control device; measuring a performance parameter of the heating, ventilation and air conditioning system; determining a performance parameter measurement of the flow indicative of onset of surge; determining a surge line of the heating, ventilation and air conditioning system based upon the performance parameter measurement; and independently controlling the at least one flow control device based upon the performance parameter to mitigate an onset of the surge.

Abstract: To provide a quick freezing apparatus and method making it possible to prevent a subtle reaction between an object-to-be-preserved and a gas inside its freezing store to prevent deformation and deterioration of the object-to-be-preserved as much as possible and freeze-preserve the object maintaining its freshness and quality at a high standard for a long term, and thereby applicable to a long-term preservation of a living tissue. A quick freezing apparatus includes a freezing store 11 including a door for bringing in or taking out an object-to-be-frozen 3, a freezer 17 capable of lowering a temperature inside the freezing store to a temperature equal to or less than approximately ?30 degrees C., a pressure regulator 60 capable of adjusting a gas pressure inside the freezing store, and a ventilator 31 for sending cold air at a wind velocity of 1 to 5 m/sec toward the object-to-be-frozen placed inside the freezing store.

Abstract: The invention provides an air conditioner including a radiant sensor device assembly inside a front panel of an indoor unit, in which a radiant sensor holder for holding a radiant sensor and a radiant sensor holder drive mechanism are assembled into the radiant sensor device assembly, the radiant sensor holder drive mechanism includes four projections provided on a part of the outer periphery of the radiant sensor holder in the radial directions, a drive motor attached to the radiant sensor device assembly so that the direction of a motor shaft extends in the same direction as the axis of rotation of the radiant sensor holder, and a sector-shaped connecting member being attached to the motor shaft and having three pins to be fitted between the four projections on the radiant sensor holder respectively for driving the projections.

Abstract: A method for providing energy-efficient temperature and humidity control with uniform ventilation air distribution in a constant-volume zoned heating and cooling systems. The method utilizes an air-to-air heat exchanger that regulates the temperature of the supply air to a space, using the temperature differential between supply air and return (room) air and regulating the flow of return air through the heat exchanger.

Abstract: The present invention discloses a refrigerator which can individually cool a freezing chamber and a refrigerating chamber by dividing a heat exchange region of an evaporator into a freezing chamber side region and a refrigerating chamber side region, forming individual circulation passages for supplying cool air from each region to the freezing chamber and the refrigerating chamber, and forming a freezing chamber fan and a refrigerating chamber fan on each circulation passage, and method for controlling operation of the same which can efficiently perform a cooling operation and reduce power consumption by effectively controlling the operations of each component.

Abstract: A refrigeration apparatus having an evaporator fan motor control includes an evaporator to remove heat energy from the air in a cooled storage space. The evaporator transfers the heat energy to a refrigerant. At least one evaporator fan moves air from the cooled storage space across the evaporator to improve the transfer of heat energy into the refrigerant. The one or more evaporator fans have an energy consumption and generate a waste heat energy. A refrigeration control unit at least controls the operation of the one or more evaporator fans. During an off mode, the one or more evaporator fans are operated in a reduced energy consumption mode to reduce the energy consumption of the one or more evaporator fans and to reduce the waste heat while still defrosting the evaporator in the off mode.

Abstract: The invention relates to a control unit (16), in particular for a cooling-air fan (14) of an internal combustion engine (2), having a housing, in which a printed circuit board is arranged, for receiving electronic components and conductor elements (22a, 22b; 22?a, 22?b) are arranged for the supply of current. It is proposed that a temperature fuse (22c, 22?c) is arranged between the conductor elements (22a, 22b; 22?a, 22?b) as an overheating safeguard for the control unit (16).

Abstract: The described method and apparatus pertains namely to the HVAC (Heating, Ventilating, and Air Conditioning) industry, though its many functions extend into any and all forms of air-fluid movement, metering, distribution, and containment. Essentially, the scope of operation of the method and apparatus encompasses all forms of scientific and engineering measurement dealing with fluid dynamics, fluid statics, fluid mechanics, thermal dynamics, and mechanical engineering as they pertain to precise, articulated control of air-fluid distribution and delivery. The described method and apparatus offers complete, comprehensive, and correct utilization of air-fluid movers and terminal devices under unique sensor logic control, from initial lab testing stages through to equipment cataloguing, selection, design and construction of any and all air-fluid distribution systems in entirety, whereas previously there was no such cohesive, total and terminal method of control for these systems or their components.

Abstract: A self-contained air conditioner unit incorporates an energy recovery ventilator portion that brings about several changes of room air per hour with outdoor fresh air. There is an outdoor air intake plenum which furnishes the fresh air and the condenser air for the condenser coil, and a return air plenum. Air from the room return air plenum is HEPA filtered and conducted to the evaporator coil and evaporator fan, and is supplied back into the conditioned space. The energy recovery ventilator has a counterflow heat exchanger core situated between the return air plenum and the fresh air intake plenum, as well as two ventilation fans, one (or both) of which may be of variable or multiple speed. By controlling the fan speeds, it is possible to produce a neutral pressure, a positive or overpressure, or a negative or underpressure in the conditioned space. The unit can be wheeled into place and installed easily by personnel without special training.

Abstract: The present invention provides an airflow control loop that uses averaged airflow measurements without the problems that are normally encountered with averaging measurements, such as the delay introduced into the airflow control loop. This is accomplished, in the present invention, through a predictive control scheme. The predictive control scheme of the airflow control loop calculates the damper sensitivity, calculates the damper runtime needed to achieve setpoint, and then runs the damper for the determined period of time. In addition to the unique airflow control loop used to maintain the constant airflow into the room, the present invention also implements a digital form of proportional, integral, and derivative (PID) control to maintain the room temperature. The digital form of PID control uses non-linear gains which vary according to how far the measured temperature is from setpoint.

Abstract: Comfort temperature and humidity levels in a conditioned space are controlled by cycling the speed of an evaporator fan motor in such a manner that, during time periods when higher sensible capacity is desired, the time in which the fan motor operates at a higher speed is increased, and during time periods when a higher latent capacity is desired, the time in which the fan motor operates at a lower speed is increased. The fan motor may be a single speed motor that is switched between on and off positions, or it may be a multiple speed motor that is cycled between a higher speed and a lower speed.

Abstract: A cooling system of the invention mounted on a motor vehicle has a damper configured to switch over an air blow mode between an inside air intake mode of taking in the air from a passenger compartment of the motor vehicle via operation of a battery blower fan and directly blowing the intake air to a battery and an A/C intake mode of taking in the air cooled down by an air conditioner (evaporator) via operation of the battery blower fan and blowing the cooled intake air to the battery. In response to a switchover demand of the air blow mode, when a vehicle speed is not lower than a preset reference speed, a switchover of the damper is immediately performed to switch over the air blow mode. When the vehicle speed is lower than the preset reference speed, the switchover of the damper is prohibited to keep the air blow mode unchanged. At the higher vehicle speed, the drive-related noise (background noise) sufficiently masks the wind noise occurring in the course of the switchover of the damper.

Abstract: A vehicle air conditioner includes an air-conditioning ECU. The air-conditioning ECU performs a cooling mode operation in which air is cooled by an interior heat exchanger in a cooling refrigeration cycle. The air-conditioning ECU performs a heating mode operation, in which air is heated by the interior heat exchanger in a hot gas heater cycle. The air-conditioning ECU performs an air blowing operation in which air is blown toward an inner surface of a windshield of the vehicle without operating the compressor before performing a refrigerant collecting operation.

Abstract: To provide a positioning system that clearly defines a disposition of a base station for identifying a position of a radio set. While a wireless base station 1 that transmits and receives a distance-measuring signal to and from a terminal 2 to be measured by wireless communication is disposed at each corner forming an equilateral triangular, the length of each side of the equilateral triangle is made to be a maximum communication distance of the wireless base station 1.

Abstract: The invention relates to a method for regulating a coolant circuit (2) of a vehicle air conditioning system (4). According to said method, a target value (SW(VT)) for an evaporator temperature (VT) is predetermined in a base control circuit. Said value is used to determine a control value (U) for controlling the evaporator temperature (VT) by means of an evaporator temperature regulator (16). Said control value is also fed to a ventilator fan controller (26).

Abstract: An air handling system for cooling and/or heating a room includes a sleep mode. The system includes a fan assembly to transport air from the system into the room. A user interface transmits a sleep mode signal upon activation of the sleep mode by a user. A control unit controls the climate control unit to gradually change an ambient temperature in the room over a predetermined period of time in response to the sleep mode signal transmitted by the user interface. Further, the fan assembly has a substantially continuously adjustable speed within a range of speeds defined by a predetermined upper limit and a predetermined lower limit. The control unit adjusts the speed of the fan assembly according to a desired speed of the fan assembly input via the user interface. A multi-position switch defines the predetermined upper and lower limits.

Abstract: A refrigerator unit is configured for a container in which it is possible to know the quantity of air that is ventilated. The refrigerator unit is equipped with a ventilation mechanism, an opening degree detecting mechanism, and a recording unit. The ventilation mechanism ventilates the air inside the container. The opening degree detecting mechanism acquires ventilation data related to the quantity of air ventilated by the ventilation mechanism. The recording unit records the ventilation data acquired by the opening degree detecting mechanism.

Abstract: The invention relates to a variable flow mixing valve for use in a Heating Ventilation and Air Conditioning module. The module is particularly suited for use in a vehicle. The variable flow mixing valve includes drive means which drive a mixing door and a baffle between various positions in order to allow a relatively warm flow of air, from a first chamber, to mix with a relatively cool flow of air from a second chamber. The baffle and door are linked in such a way as to provide an aperture therebetween through which, in use, the first and/or second flows of air pass. A parking area is also provided for the baffle and is shaped in order to reflect airflow back toward the first and second chambers.

Abstract: A unit arrangement having a receiving housing, in particular a switchgear cabinet, in an interior of which electrical units are accommodated and having a cooling device which is in air-conducting communication with the interior of the receiving housing via at least one air inlet and at least one blower aperture, and a cooling operation monitoring device. A requirement-orientated control of the cooling operation is possible when the cooling operation monitoring device has an inlet temperature sensor which measures a temperature of the air to be cooled which is supplied to the cooling unit via the air inlet. An outlet temperature sensor measures a temperature of the cooled air which is supplied to the interior of the receiving housing via the blower aperture. A computing unit of the cooling operation monitoring device determines a temperature difference between the temperature measured by the inlet temperature sensor and the outlet temperature sensor.

Abstract: A refrigerator includes a fresh food compartment, a freezer compartment and a refrigeration system. A duct, exposed to the freezer compartment, leads into the fresh food compartment. A damper is arranged within the duct to selectively allow the passage of cooling air into the fresh food compartment. The refrigerator also includes an air mixing fan arranged in the fresh food compartment, a freezer mounted ice maker, a user interface having a plurality of control elements and a controller operatively associated with the user interface. The controller includes a memory having stored therein a plurality of operating parameters for controlling various aspects or features of the refrigerator, including a temperature control mode, a super cool mode, a food saver mode and a quick ice mode, which can be synergistically combined to efficiently operate the refrigerator.

Abstract: A zone control panel for use with an HVAC system having zone control and a variable speed blower, and a method for controlling a fluid temperature conditioning device. In one aspect, the zone control panel includes a plurality of thermostat terminals for receiving thermostat signals, a plurality of damper terminals for transmitting damper control signals, and one or more terminals for transmitting signals to control a fluid temperature conditioning device having a variable speed blower. The zone control panel also includes a blower terminal for transmitting a signal to a dehumidification terminal associated with the fluid temperature conditioning device, where the dehumidification terminal is labeled or indicated for use with a dehumidification operating mode or for initiating a dehumidification operating mode of the variable speed blower.

Abstract: A refrigerator which includes a refrigerating compartment and a freezing compartment, a first evaporator and a second evaporator corresponding to the refrigerating compartment and the freezing compartment, respectively, a compressor compressing refrigerant to be supplied to the first and second evaporators, a first fan and a second fan supplying cool air to the compartments, respectively, an external temperature sensor detecting an external temperature of the refrigerator, a multi-directional valve supplying the refrigerant to at least one of the evaporators, and a control unit operating the compressor and the multi-directional valve, and driving the first fan and the second fan until temperatures of the compartments reach a predetermined reference temperature.

Abstract: An ice making device and a refrigerator having the ice making device include an ice making tray having ice making grooves opened at upper sides thereof to receive water and a cool air flow channel disposed below the ice making grooves and along which cool air flows. Cool air is uniformly supplied from one side to the other side of the ice making tray along the cool air flow channel, and therefore, the ice making process is completed in a reduced time.

Abstract: Disclosed is an air conditioner includes a cabinet that is configured to mount on an indoor ceiling. The air conditioner also include a front panel that is coupled to the cabinet and having an air inlet and outlet. The air conditioner further include a suction panel that is coupled to the front panel and configured to move between an open positione in which air is able to circulate through the air conditioner and a closed position in which air is blocked from circulating through the air conditioner. The air conditioner further include a sensor unit that is mounted on the suction panel, that is configured to move together with the suction panel and that is configured to detect a position of a person in the indoor place. In addition, the air conditioner also include a controller adjusting a direction of air flow from the outlet based on the deteded position of the person.

Abstract: A method of controlling a refrigerator including an ice maker for making ice using chilled air is disclosed. The method includes supplying chilled air to a compartment, blowing chilled air in the compartment to an ice-making tray disposed in the compartment regardless of conditions in the compartment, and varying a blowing speed of the chilled air in the compartment to the ice-making tray according to a demand. According to the present invention, a large quantity of ice can be produced within a short time. Ice-making speed and the quantity of ice can be varied according to a user's demand.

Abstract: An exhaust air removal system and method for use with a rack or enclosure containing equipment is provided. The system and method are configured for removal of exhaust air vented from equipment during operation to thereby remove heat from the equipment. In one respect, the system includes a fan unit preferably configured to serve as a back door of an equipment rack or enclosure and configured to provide access to an interior of the rack or enclosure. The fan unit provides multiple fans coupled to internal exhaust ducts that are arranged to draw and to remove exhaust air vented from rack-mounted equipment. The fan unit is further configured to vent exhaust air to an area external to a rack or enclosure, such as an external exhaust duct or plenum. Removal of hot and warm exhaust air vented from rack-mounted equipment enables the equipment to operate effectively, drawing sufficient amounts of cooling air to meet its cooling requirements.

Abstract: A heating and cooling system for a multi-level space is provided that comprises at least one lower level return air duct and at least one upper level return air duct, and a thermostat for controlling the operation of the heating or cooling system through either a low voltage cooling activation signal or a low voltage heating activation signal.

Abstract: A portable cooling apparatus and associated method include an ice chest having an inner cavity defined by one or more side walls extending upwardly from a floor forming a lower end of the ice chest and having a lid positioned at an upper end of the ice chest so as to close access to the inner cavity; a manifold removably positioned on the floor of the inner cavity of the ice chest, the manifold having an inlet and an outlet extending through the one or more side walls to outside the ice chest; and an electric fan associated with the manifold outlet for drawing air from the inlet through the manifold so as to blow air through the outlet.

Abstract: Disclosed is a refrigerator includes a storage room and having a cool air off mode in which supply of cool air to the storage room is cut off. Thus, a refrigerator having a cooling system in which a pair of evaporators are serially connected for a pair of storage rooms is provided according to the above embodiments. A refrigerator may also have a cooling system in which a plurality of evaporators is connected in parallel and refrigerant is selectively supplied to each evaporator by a refrigerant supply valve.

Abstract: The present invention discloses a refrigerator which can perform direct cooling of circulating cool air by natural convection in a freezing chamber (F) and a refrigerating chamber (R), and which can selectively perform indirect cooling of circulating cool air by forcible convection in the refrigerating chamber. It is like that, frost or condensed water formed in the refrigerating chamber (R) of the direct cooling type refrigerator does not Influence the inside of the refrigerating chamber. In addition, the refrigerator efficiently performs a defrosting operation of the refrigerating chamber (R), sanitarily performs a cooling operation, and maintains uniform cooling performance.

Abstract: An apparatus and method for controlling fan operation in a system having a fan are provided. The apparatus includes a temperature sensor configured to detect at least one internal temperature of the system as a whole or component devices thereof, a power supply configured to convert one or more different input powers into predetermined voltage levels and supply the voltage levels to the fan, and a controller connected to the temperature sensor and the power supply and configured to control operation of the fan, wherein the controller controls fan operation based on a fan control mode selected by a user and the sensed at least one internal temperature.

Abstract: A refrigerator comprises a main cabinet formed with a storage compartment, a partition which partitions the storage compartment into a first storage compartment, a second storage compartment, a multipurpose compartment; a first evaporator provided to the main cabinet to generate cool air supplied to the first storage compartment; a second evaporator which is provided to the main cabinet to generate the cool air supplied to the second storage compartment; a first sub cool air duct which guides the cool air generated from the first evaporator to the multipurpose compartment; a second sub cool air duct which guides the cool air generated from the second evaporator to the multipurpose compartment; and at least one sub cool air supplying apparatus provided to the first sub cool air duct and the second sub cool air duct to supply the cool air from the first evaporator and the second evaporator to the multipurpose compartment.

Abstract: The invention relates to a device for cooling a housing of a gas turbine and/or of a combustion chamber, in particular of a gas turbine, comprising: a cooling gas supply device with a cooling gas outlet, out of which a cooling gas stream flows when the cooling gas supply device is in operation, and with a cooling gas inlet, via which the cooling gas stream flows back to the cooling gas supply device when the cooling gas supply device is in operation; and a cooling gas path which is led through the housing in the circumferential direction of the latter and which connects a first housing connection to a second housing connection. So that a circumferential temperature difference of the housing can be set independently of an average temperature of the housing, the cooling device is equipped with a switching device for reversing the flow direction.

Abstract: A control device for a fan motor (7) which cools a condenser (6) of a vehicle air conditioner includes a temperature sensor (12) which detects a temperature of an air that has passed through an evaporator (10) of the vehicle air conditioner; and a controller (2). The controller (2) functioning to calculate a reference value (Ds) of an airflow generated by a rotation of the fan motor (7); calculate a correction value (DUP, DUPT) of the airflow on the basis of the detected air temperature (Tair); set a target airflow (TDR) on the basis of the reference value (Ds) and correction value (DUP, DUPT) of the airflow; and control the rotation of the fan motor to effect the target airflow (TDR).

Abstract: A semiconductor fabrication heat exchanger system is provided including two heat exchangers spaced from each other. The first heat exchanger receives a high temperature fluid heated from a semiconductor processing tool or the like and the second heat exchanger has a second fluid with a set temperature significantly lower than the heated fluid of the first heat exchanger. A variable and controllable fan removes heat from the heated fluid and the second heat exchanger cools the heated air.

Abstract: Provided is a multi-air conditioner central control system, which shares the physical network and control resources with a multi-air conditioner system so as to control a ventilation system in an integrated manner. The central control system includes a multi-air conditioner system including one or more multi-air conditioners connected to a network for indoor air conditioning, a ventilation system including one or more ventilation devices connected to the network for ventilating indoor air by inhaling and exhausting the indoor air, and a central controller connected with the multi-air conditioner system and the ventilation system for monitoring, in real time, a state of each of the multi-air conditioners and the ventilation devices and controlling an operation thereof.

Abstract: A method for controlling an intake of an air-conditioner of a vehicle is disclosed. The method includes the a-1) step (S1) at which the main door (220) of the intake (200) opens the outdoor-air inlet port (211) and closes the indoor-air inlet port (212), so that only outdoor air flows into the intake, the b-1) step (S2) of detecting operation of the blower (130), the c-1) step (S3) of determining whether set indoor temperature of the vehicle is predetermined temperature or higher, and the d-1) step (S4) at which the subsidiary door (230) opens the subsidiary indoor-air inlet port (213) so that some indoor air flows into the intake. The method automatically controls the intake of the air-conditioner, thus allowing some indoor air to flow into the intake while outdoor air is flowing into the intake, therefore keeping the indoor temperature of the vehicle pleasant, and enhancing heating efficiency.

Abstract: In an automotive air-conditioning system, when pollen mode control is effected by a vehicle occupant, air outlet mode is forcibly set to a face mode. Further, the air flow amount determined from the air flow amount Vm used in the usual auto mode and the air flow amount f(Tw) used during warm-up control or the air flow amount determined by the air flow amount correction value f(Tam) having a relatively small upper limit value when ambient temperature is higher than a predetermined temperature (15° C.), whichever is larger, is taken as the set value for the air flow amount in the pollen mode control. With this arrangement, when coolant temperature and ambient temperature are low, a relatively small amount of air can be blown to the upper part of the occupant's body, and thus, while maintaining the pollen removal effect, occupant discomfort can be reduced by preventing a fast flow of air from being blown toward the occupant's face, etc.

Abstract: A heat pump refrigerant system is provided with a pulse width modulation control for a fan moving air over the indoor heat exchanger. When it is determined that there is insufficient heat rejected by the indoor heat exchanger to heat the volume of air being delivered by the fan into the conditioned environment, the volume of air supplied to the conditioned environment is reduced by utilizing one of pulse width modulation techniques to cycle the indoor fan motor to reduce the average volume of supplied air. Therefore, a precise control over the temperature of air delivered to the conditioned space is achieved, temperature of the delivered air is increased to the target value, and so-called “cold blow” conditions are avoided.

Abstract: An HVAC system includes a variable speed electric motor driven fan for circulating air to an enclosed space through an indoor unit for providing heating or cooling effect to air circulated through the indoor unit. A controller with user or system installer actuatable switches includes a programmable microcontroller providing a pulse width modulated (PWM) signal to a motor control unit to select a predetermined air flowrate less than full air flowrate during system startup and shutdown. User input parameters include selected percentages of full air flowrate to satisfy requirements for reduced noise level, lower humidity and for improved sensible heating of air being circulated, the latter being effective particularly for heat pump applications. Selection of pre-run, short run and shutdown cycles may be provided.

Abstract: A refrigerator includes a housing including a cooling compartment and a machine compartment, a refrigeration cycle provided in the housing and including a compressor, a condenser, a decompressor, and an evaporator which provide a refrigerant path, a refrigerant provided in the refrigeration cycle and flowing in the refrigerant path, and a blower for cooling the condenser. The condenser includes a pipe and a fin mounted on the pipe. The pipe is formed to have a helical shape with gaps. The helical shape has an inner space, a first opening, and a second opening opposite to the first opening. The inner space has a substantially cylindrical shape between the first opening and the second opening. The first opening faces the blower. A flow resistance between the second opening and the inner space is larger than a flow resistance between the gaps of the helical shape and the inner space.

Abstract: An information processing apparatus includes a cooling fan, a temperature acquiring unit, and a control unit configured to accelerate the cooling fan in an n-stage and to decelerate it in an m-stage more than the n-stage based on temperature acquired by the temperature acquiring unit.

Abstract: A cooling system for a room (10) containing electronic data processing equipment (12) comprises a raised floor construction (14) dividing the room into a plenum space (17) underneath the raised floor and a usable space (19) above the raised floor, an air conditioning device (20) for feeding cooled air to the plenum space and a cooling module (30). The cooling module is arranged as floor element of the raised floor and comprises a fan (32) for providing a flow of cooled air from the plenum space to the usable space, the cooling module being configured such that the flow direction of the flow is controllable. The system further comprises a control device (56, 58) connected to the cooling module for automatically controlling the flow direction of the flow.

Abstract: A thermo-electric device has a seat side and a cabin side for delivering heating and cooling air from a HVAC module to seat passages of a vehicle seat assembly. A selector is included for setting a desired or control temperature Tcontrol of the seat assembly. A comparator is included for determining the temperature difference ?T between the actual temperature of the seat assembly Tseat and the desired or selected temperature Tcontrol. A controller simultaneously adjusts a proportioning valve and adjusts the electrical current to the thermoelectric device in relationship to one another in response to the temperature difference ?T.

Abstract: A refrigerator includes a refrigerator cabinet, a fresh food compartment disposed within the cabinet, a freezer compartment disposed within the cabinet, an ice compartment disposed within the cabinet, and an electronic control system associated with the refrigerator and adapted to monitor and control the fresh food compartment, the freezer compartment and the ice compartment. The control system provides for energy efficient control and operation through various means, including adjusting cut-in and cut-out temperatures of the cooling system to control.

Abstract: A refrigeration system includes a medium temperature subsystem circulating a coolant in a closed loop between at least one medium temperature chiller and at least one medium temperature load and at least one cascade heat exchanger, and a low temperature subsystem circulating a coolant in a closed loop between at least one low temperature chiller and at least one low temperature load. A cooling circuit is provided for circulating a coolant and includes a first pump and a second pump and a fluid cooler and a valve, and interfaces with the medium temperature chiller and the low temperature chiller. The valve is movable to a closed position to define a first flow path and a second flow path, where the first flow path includes the first pump and the medium temperature chiller and fluid cooler, and the second flow path including the second pump and the low temperature chiller and the cascade heat exchanger.

Abstract: A refrigerator with a condenser and a fan for the forced ventilation of the condenser, the refrigerator including a fan control circuit for controlling the fan to provide variable throughflow of air from the fan and an assembly for measuring temperature in operative communication with the fan control circuit for operating the fan in a temperature-dependent manner.