A method of operating a dryer appliance includes determining a remaining moisture content of a load of articles to be dried in the dryer appliance and estimating an energy requirement for drying the load of articles based on the determined remaining moisture content of the load of articles. The method also includes activating a heating system of the dryer appliance during a dry cycle of the dryer appliance while tracking an energy output of the heating system during the dry cycle. The method further includes comparing the tracked energy output to the estimated energy requirement. When the tracked energy output is greater than a predetermined threshold percentage of the estimated energy requirement, a user notification is provided.

Methods and systems for the thermo-vacuum drying and processing of objects such as clothes. A vacuum ejector driven by high-pressure steam is employed to evacuate evaporated moisture mixed with air from a dryer vessel producing an intensification of the drying process such as can significantly reduce the energy and time requirements for the drying process and increase water utilization.

The present disclosure provides system and method for drying various materials using an air-to-air heat exchanger in sequence with a liquid-to-air heat exchanger to provide heat to a chamber to remove moisture from materials contained within the chamber in an energy efficient manner.

Disclosed is a laundry treating apparatus including a cabinet, a drum, a fluid circulator including a compressor sensor, an air circulator including a fan, a driver including a first driver and a second driver, and a controller, wherein a drying operation includes an efficiency increasing process for increasing drying efficiency inside the drum, an efficiency maintaining process for maintaining the drying efficiency, and an efficiency decreasing process for reducing the drying efficiency, wherein the controller performs the drying operation while distinguishing the efficiency increasing process, the efficiency maintaining process, and the efficiency decreasing process from each other through a measured value of the compressor sensor.

Disclosed is a laundry treating apparatus including a cabinet, a drum, a fluid circulator including a compressor sensor, an air circulator including a fan, a driver including a first driver and a second driver, and a controller, wherein a drying operation includes an efficiency increasing process for increasing drying efficiency inside the drum, an efficiency maintaining process for maintaining the drying efficiency, and an efficiency decreasing process for reducing the drying efficiency, wherein the controller performs the drying operation while distinguishing the efficiency increasing process, the efficiency maintaining process, and the efficiency decreasing process from each other through a measured value of the compressor sensor.

Disclosed is a laundry treating apparatus including a cabinet, a drum, a fluid circulator, an air circulator including a humidity sensor, a driver, and a controller, wherein a drying operation includes an efficiency increasing process for increasing drying efficiency inside the drum, an efficiency maintaining process for maintaining the drying efficiency, and an efficiency decreasing process for reducing the drying efficiency, wherein the controller performs the drying operation while distinguishing the efficiency increasing process, the efficiency maintaining process, and the efficiency decreasing process from each other using a measured value of the humidity sensor.

Disclosed is a laundry treating apparatus including a cabinet, a drum, a fluid circulator, an air circulator including a humidity sensor, a driver, and a controller, wherein a drying operation includes an efficiency increasing process for increasing drying efficiency inside the drum, an efficiency maintaining process for maintaining the drying efficiency, and an efficiency decreasing process for reducing the drying efficiency, wherein the controller performs the drying operation while distinguishing the efficiency increasing process, the efficiency maintaining process, and the efficiency decreasing process from each other using a measured value of the humidity sensor.

Disclosed is a method for controlling a laundry treating apparatus including an efficiency increasing operation and an efficiency maintaining operation, wherein the efficiency increasing operation includes a first efficiency increasing operation, wherein the controller controls the first driver such that an RPM of the drum corresponds to a first drum RPM and controls the second driver such that an RPM of the fan corresponds to a first fan RPM to perform a first efficiency increasing process, and a second efficiency increasing operation, wherein, after the first efficiency increasing operation, the controller controls the first driver such that the RPM of the drum corresponds to the first drum RPM and controls the second driver such that the RPM of the fan corresponds to a second fan RPM higher than the first fan RPM to perform a second efficiency increasing process.

Disclosed is a method for controlling a laundry treating apparatus including an efficiency increasing operation and an efficiency maintaining operation, wherein the efficiency increasing operation includes a first efficiency increasing operation, wherein the controller controls the first driver such that an RPM of the drum corresponds to a first drum RPM and controls the second driver such that an RPM of the fan corresponds to a first fan RPM to perform a first efficiency increasing process, and a second efficiency increasing operation, wherein, after the first efficiency increasing operation, the controller controls the first driver such that the RPM of the drum corresponds to the first drum RPM and controls the second driver such that the RPM of the fan corresponds to a second fan RPM higher than the first fan RPM to perform a second efficiency increasing process.

A heater arrangement for a multi-compartment appliance comprises a first heater, a second heater, and a relay. The first heater is disposed within a first airflow path for a first dryer compartment. The second heater is disposed within a second airflow path for a second dryer compartment. The relay interconnects, via an electrical harness, the first and second heaters. The relay, responsive to a demand for heat to the first dryer compartment and the first heater having a temperature being less than a target temperature, diverts power to the first heater.