A heating and cooling system that includes a condenser coil configured to receive a refrigerant. A first compressor and a second compressor that pump the refrigerant through the condenser coil. A first condenser fan and a second condenser fan that push air over the condenser coil. A controller that receives a signal indicative of an ambient air temperature, a signal indicative of an operational status of the first compressor, and a signal indicative of an operational status of the second compressor. The controller controls operation of the first condenser fan and the second condenser fan in response to the signal indicative of the ambient air temperature, the signal indicative of the operational status of the first compressor and the signal indicative of the operational status of the second compressor.

The various implementations described herein include methods, devices, and systems for cooling a vehicular electronics system. In one aspect, a vehicular refrigerant system includes: (1) a refrigerant loop having a compressor configured to compress a refrigerant, a condenser configured to condense the compressed refrigerant, an expansion device configured to enable expansion of the condensed refrigerant, and a heat exchanger configured to transfer heat from a liquid coolant to the expanded refrigerant; (2) a liquid coolant loop configured to transfer heat from an electronics system via the liquid coolant; and (3) a controller configured to: (a) obtain operating data regarding the refrigerant, the liquid coolant, and/or the electronics system; and (b) adjust operation of the refrigerant loop and/or the liquid coolant loop based on the obtained operating data.

An operational efficiency apparatus comprising a sensor connected to a heat transfer system to detect efficiency of system and a display electrically connected to the sensor for indicating efficiency of the system based on data detected from the sensor.

A system for monitoring health of refrigerated storage containers includes an instantaneous health module configured to determine instantaneous health values for a refrigerated storage container based on parameters measured by sensors of a refrigeration system of the refrigerated storage container during a trip of the refrigerated storage container. A statistics module is configured to, after completion of the trip of the refrigerated storage container, determine statistical values based on the instantaneous health values determined for the trip. A health module is configured to determine an overall health value for the refrigerated storage container at the completion of the trip based on the statistical values and to store the overall health value for the refrigerated storage container in memory in association with a unique identifier of the refrigerated storage container.

The disclosed technology includes devices, systems, and methods for a battery-integrated heat pump system. The disclosed technology can include a heat pump system having an indoor heat exchanger coil, an outdoor heat exchanger coil, and a compressor. The disclosed technology can further include a third heat exchanger coil, a battery, and a pump configured to circulate a fluid through the third heat exchanger coil and the battery. The disclosed technology can be configured to manage the temperature of the battery by operating the pump to facilitate heat transfer between the refrigerant and the fluid to heat or cool the battery.

A method of detecting electrical failure in a refrigeration system is provided. The method includes determining whether a present superheat of the refrigeration system is between a maximum superheat and a minimum superheat for the refrigeration system, the maximum superheat and the minimum superheat defining a normal operating range. The method also includes detecting an electrical property of an expansion valve assembly of the refrigeration system responsive to the superheat being outside the normal operating range. The method further includes determining whether the expansion valve assembly as experienced an electrical failure based on at least the electrical property. A signal indicating that the expansion valve has experienced an electrical failure is generated based on a determination that the expansion valve assembly has experienced the electrical failure.

A system includes a door sensor that provides a status of whether a door of a refrigeration system is open or closed, a temperature sensor that measures a temperature of a food compartment of the refrigeration system, a power sensor that measures an amount of power consumed by the refrigeration system, and a compressor sensor that provides acoustic data about a compressor of the refrigeration system. The system further includes a remote computing system configured to send an alert indicating that the refrigeration system needs servicing when the temperature of the food compartment of the refrigeration system is determined to be above a predetermined temperature while: the door of the refrigeration system is closed, the amount of power consumed by the refrigeration system is within a predetermined power range, and acoustic signals of the compressor of the refrigeration system are within a predetermined acoustic range.

An appliance includes an appliance housing, an interface adapted to receive power information, a plurality of sensors for sensing environmental conditions, a plurality of controls for controlling operations of the appliance, and an intelligent control. The intelligent control is disposed within the appliance housing and operatively connected to the interface and the plurality of sensors and adapted to dynamically select control values associated with the plurality of controls based on at least one of the power information, the environmental conditions, or a combination thereof to increase energy efficiency of the appliance.

A refrigerated display case having a housing defining a temperature controlled space and a refrigeration system coupled to the housing is provided. The refrigeration system is configured to be operable to affect a temperature of the temperature controlled space. The refrigeration system includes an actuator, a controller, and a sensor. The controller is configured to continuously update a stored position of the actuator based on measurement of an electric current provided to the actuator, retrieve the stored position after a power failure, and restart control based on the stored position of the actuator. The sensor is configured to communicate with the controller.

A system includes a heat-pump circuit and a heating-fluid circuit. The heat-pump circuit includes a compressor and a first condenser conduit. The heating-fluid circuit includes first, second, and third flow-paths. The third flow-path selectively communicates with the first and second flow-paths. The first flow-path includes a first valve. The first valve moves between an open position allowing fluid flow through the first flow-path and a closed position restricting fluid flow through the first flow-path. The second flow-path includes a second condenser conduit and a second valve. When the second valve is open, fluid flows through the second flow-path. In the closed position, the second valve restricts fluid flow through the second flow-path. The third flow-path includes a heat exchanger receiving fluid from the first flow-path when the first valve is in the open position and receiving fluid from the second flow-path when the second valve is in the open position.