Abstract: A heat exchanger for a motor vehicle that includes at least two flat tubes and at least two corrugated fins. The flat tubes and the corrugated fins are stacked alternately one above the other in a height direction (HR) to form a stack. The flat tubes and the corrugated fins are displaced in the stack in such a way that a central height axis (HMA) of the stack is aligned at an inclination angle (NVV) to the height direction (HR).

Abstract: A climate control circuit for a transport climate control system is provided. The circuit includes a compressor, a plurality of evaporators, a suction flow control device, and a controller. The suction flow control device is downstream of the plurality of evaporators and directs the working fluid from each of the evaporators to one of a main suction port and an auxiliary port of the compressor. The controller determines whether each of the evaporators is operating in a fresh temperature range or in a frozen temperature range. For each of the evaporators operating in the fresh temperature range, the controller instructs the suction flow control device to direct the working fluid from the corresponding evaporator to the auxiliary suction port. For each of the plurality of evaporators operating in the frozen temperature range, the controller instructs the suction flow control device to direct the working fluid to the main suction port.

Abstract: Disclosed is an air conditioner for a vehicle, the air conditioner having an improved guide structure capable of increasing an air volume by preventing a collision between air flowing through an upper passage and air flowing through a lower passage. The air conditioner for a vehicle comprises: an air conditioning case having an air passage formed therein and an air outlet which includes a defrost vent and a face vent; and a heat exchanger for cooling and a heat exchanger for heating, which are provided in the air passage of the air conditioning case.

Abstract: A controller of an HVAC system monitors a suction-side property and a liquid-side property over a period of time. The controller determines whether the suction-side property has an increasing or decreasing trend over the period of time. The controller determines whether the liquid-side property has an increasing or decreasing trend. In response to determining that both the suction-side property and the liquid-side property have an increasing trend over the period of time, a fan fault is detected. In response to determining that the suction-side property has a decreasing trend and the liquid-side property has an increasing trend over the period of time, a blockage of a refrigerant conduit subsystem is detected. In response to determining that both the suction-side property and the liquid-side property have a decreasing trend over the period of time, a blower fault is detected.

Abstract: Disclosed is a method of operating a trailer refrigeration unit of a refrigerated trailer system comprising setting a cargo hold set point temperature through a user interface; urging an airflow along a flowpath from a return air inlet port, through an evaporator of the trailer refrigeration unit, and to a supply air outlet port of the trailer refrigeration unit; monitoring a return air temperature of the airflow flowing through the return air inlet port; monitoring a supply air temperature of the airflow flowing through the supply air outlet port; heating the airflow flowing through the supply air outlet port when the return air temperature is less than the cargo hold set point temperature; and stopping heating of the airflow flowing to the supply air outlet port when the return air temperature is less than the cargo hold set point temperature and the supply air temperature reaches a threshold.

Abstract: An air handler includes a housing with a heat exchanger core. The housing includes a faceplate, a roof panel, a base panel, a first side panel, and a second side panel. A first tunnel and a second tunnel are connected to the housing at the faceplate. A septum protrudes from the faceplate and connects the core at a front edge. The air handler further includes a first recirculation path and a second recirculation path inside the housing. The first and second recirculation paths are defined by the septum, the housing, and the core. The first and second recirculation paths are configured to direct a portion of airflow from the first tunnel to the second tunnel. The air handler further includes a first damper and a second damper disposed on the faceplate and configured to obstruct the first recirculation path and the second recirculation path respectively.

Abstract: When a temperature of a coolant is a first predetermined temperature or higher, an air conditioner ECU executes a first control that sets a target evaporation temperature higher by a predetermined temperature and the air conditioner ECU executes a second control that changes the target evaporation temperature in accordance with a cooling load inside the vehicle cabin. When the second control is executed after the first control is executed, the air conditioner ECU sets a first target evaporation temperature set by the first control as the target evaporation temperature, and calculates a second target evaporation temperature that is changed by the second control based on the target evaporation temperature immediately before the first control is executed. When the second target evaporation temperature becomes larger than the first target evaporation temperature, the air conditioner ECU sets the second target evaporation temperature as the target evaporation temperature.

Abstract: A method for operating a cooling system of a motor vehicle for cooling at least one component, a cooling system of a motor vehicle for cooling at least one component, and a motor vehicle having such a cooling system. The cooling system has a coolant circuit and a refrigerant circuit. The coolant circuit serves for cooling the at least one component and the refrigerant circuit and the coolant circuit are coupled thermally to one another via a heat exchanger. The coolant circuit has a conveying device for conveying a coolant in the coolant circuit. A cooling power of the refrigerant circuit can be regulated. The regulation of the cooling power of the refrigerant circuit is realized in a manner dependent on a return temperature of the coolant and/or on a temporal development of the return temperature of the coolant.

Abstract: There is disclosed an environmental control system for heating at least one enclosed space. The system comprises a heat-pump circuit that includes a compressor, a heat-output stage, an expansion device and an evaporator arranged in series along a flow path for a refrigerant. The heat-output stage comprises a primary heat exchanger and a secondary heat exchanger that are both configured to transfer heat from the refrigerant to one or more external mediums in thermal communication with the at least one enclosed space. The primary heat exchanger and the secondary heat exchanger are connected in series along the flow path, such that the secondary heat exchanger will transfer excess heat energy remaining within the refrigerant after passing through the primary heat exchanger to the one or more external mediums.

Abstract: A refrigerator having a freezer compartment and a refrigerator compartment, the refrigerator including an icemaker provided at the freezer compartment door configured to open/close the freezer compartment, a dispenser provided at a refrigerator compartment door configured to open/close the refrigerator compartment, and a water tank provided at the refrigerator compartment door, the water tank having an inlet through which water is introduced into the water tank, a first outlet for supplying water to the dispenser, and a second outlet for supplying water to a pump, wherein the pump is configured to pump water from the water tank to the icemaker.

Abstract: Embodiments are provided for a method for verifying operation of a variable air valve (VAV) equipment. Embodiments can include operating a motor having a motor shaft coupled to VAV equipment in one of a plurality of modes, and controlling a direction of rotation of the motor shaft coupled to the VAV equipment. Embodiments can also include providing an indication of the direction of rotation of the motor shaft coupled to the VAV equipment. Also provided are embodiments for a system that is used for verifying the operation of VAV equipment.

Abstract: An environmental control system includes a refrigerant circuit with a pump segment and an evaporator segment, an evaporator arranged along the evaporator segment and in fluid communication with of the refrigerant circuit, and a coolant circuit. The coolant circuit extends through the evaporator and is thermally coupled to refrigerant circuit by the evaporator, the coolant circuit including a first segment and a second segment arranged in parallel with one another to transfer heat from a first zone to a first portion of liquid coolant traversing the coolant circuit and transfer additional heat from a second zone to a second portion of coolant traversing the coolant circuit. Aircraft and environmental control systems are also described.

Abstract: A smoke generator includes a casing having a first chamber receiving dry ice, a second chamber receiving water, and a third chamber. The casing includes an outer side having a smoke outlet intercommunicating with the second chamber. The first chamber includes a smoke discharge port intercommunicating with the second chamber. A water pump device in the third compartment includes a water inlet located in the second chamber and a water spraying end located in the first chamber. The water pump device delivers water in the second chamber to the first chamber. The dry ice contacts with the water and gasifies into smoke that enters the second chamber via the smoke discharge port and is then ejected out via the smoke outlet. Water in the first chamber is flowable back to the second chamber. A heater is disposed in the second chamber and can increase the temperature of the water.

Abstract: An air conditioner includes a first inlet-side inside/outside air switching part, a first outlet-side outside/inside air switching part, a second inlet-side inside/outside air switching part and a second outlet-side inside/outside air switching part. In a dehumidifying heating mode, the first outlet-side inside/outside air switching part makes a switch to a ventilation path that guides air having passed through a first heat exchange part into a space to be air-conditioned, and the second inlet-side inside/outside air switching part makes a switch to a ventilation path that guides outside air to a second heat exchange part. In a defrosting mode, the second inlet-side inside/outside air switching part makes a switch to a ventilation path that guides inside air to the second heat exchange part, and a flow rate of refrigerant flowing through the second heat exchange part is reduced more than in the dehumidifying heating mode.

Abstract: A manifold assembly includes a body and a damper assembly. The body defines a first opening, a second opening, outlet third opening, and a fluid plenum. The fluid plenum fluidly couples the first opening, the second opening, and the third opening. The damper assembly includes a first damper, a second damper, and a connecting member. The first damper is disposed within the fluid plenum proximate to the first opening. The second damper is disposed within the fluid plenum proximate to the second opening. The connecting member is coupled to both the first damper and the second damper and is configured to move the first damper and the second damper to selectively open one of the first opening or the second opening while closing the one not opened.

Abstract: The present invention relates to a method of thawing and an apparatus for performing the method.

Abstract: A defrost cycle control assembly includes a first sensor that is configured to measure a temperature adjacent a top portion of an outdoor heat exchanger of a heat pump, a second sensor that is configured to measure a temperature adjacent a bottom portion of the outdoor heat exchanger, and a third sensor that is configured to measure an ambient temperature. Further, the defrost cycle control assembly includes a controller that is configured to initiate a defrost cycle of the heat pump based on the temperature adjacent the top portion and the ambient temperature when said temperatures indicate formation of frost at the top portion of the outdoor heat exchanger where the first sensor is disposed. The controller is configured to terminate the defrost cycle when the temperature at the bottom portion reaches a termination temperature which indicates that the frost on the outdoor heat exchanger has melted.

Abstract: An HVAC system includes a variable-speed compressor which compresses refrigerant flowing through the HVAC system, a blower which provides a flow of air through the HVAC system at a controllable flow rate, and a controller communicatively coupled to the variable-speed compressor and the blower. The controller receives a demand request, which includes a command to operate the HVAC system at a predefined setpoint temperature. In response to receiving the demand request, a setpoint temperature associated with the HVAC system can be adjusted to the predefined setpoint temperature. A speed of the variable-speed compressor is decreased to a low-speed setting. Based on the decreased speed of the variable-speed compressor, an air-flow rate can be determined to provide by the blower. The controllable flow rate of the flow of air provided by the blower can be adjusted based on the determined air-flow rate.

Abstract: It is an object to improve the reliability of a temperature adjusting device which cools an in-vehicle device such as a battery by using a refrigerant. A device temperature adjusting device 61 that is an in-vehicle device temperature adjusting device adjusts the temperature of a battery 55 mounted on a vehicle and includes a refrigerant circuit R having a compressor 2 which compresses a refrigerant, an outdoor heat exchanger 7 for letting the refrigerant radiate heat, and a refrigerant-heat medium heat exchanger 64 for cooling the battery 55 by letting the refrigerant absorb heat, and a control device 11. The control device 11 stops the compressor 2 on the basis of the fact that the refrigerant circuit R is blocked.

Abstract: An integrated circuit that controls distributed temperature sensors in a semiconductor die is described. This integrated circuit may include: memory; a controller (such as a PTAT controller) coupled to the memory; temperature sensors distributed at measurement locations in the semiconductor die (such as remote locations from the controller), where a given temperature sensor includes building blocks (or components) that are common to the temperature sensors; and routing between the controller and the building blocks over an addressable bus, where signal lines for analog signals in the addressable bus are reused when communicating between the controller and different temperature sensors.