A method of operating a transport refrigeration system including: controlling, using a controller (30), a plurality of components of the transport refrigeration system, the transport refrigeration system comprising a refrigerated trailer (108) and a refrigeration unit (22) configured to provide refrigerated air to the refrigerated trailer, the controlling includes operating at least one of the refrigeration unit and a battery system (190); powering, using an external power source (400), the refrigeration unit when the transport refrigeration system is connected to the external power source; detecting, using the controller, when the external power source is disconnected from the transport refrigeration system; detecting, using the controller, a connection to the battery system when the external power source is disconnected; activating the battery system when the external power source is disconnected; and powering, using the battery system, a select group of components of the refrigeration unit when the external power source is disconnected.

A facility has a storage unit comprising a housing enclosing a storage volume for receiving goods and/or equipment. It comprises an operating system provided with a tempering unit associated with the storage volume for maintaining a defined or set temperature in the storage volume. The operating system is provided with a refrigerant circuit comprising an internal heat exchanger, arranged in the tempering unit, an external heat exchanger as well as a compressor unit for compressing refrigerant. The operating system is provided with an engine for driving said compressor unit as an independent power source and an electric generator unit mechanically coupled to said engine. The compressor unit and/or the generator unit are driven by the engine independent power source, with the operating system connected to a local energy supply system of said facility to provide a local electric mains power supply system connected to the electric generator unit.

A gas heat pump system is disclosed. The gas heat pump system includes an air conditioning module including a compressor, an outdoor heat exchanger, an expansion device, an indoor heat exchanger and a refrigerant pipe, an engine module including an engine configured to burn a mixture of fuel and air and provide power for operation of the compressor, a cooling module including a cooling water pump configured to generate flow of cooling water for cooling the engine and a cooling water pipe connected to the cooling water pump to guide flow of cooling water. The engine module includes a mixer configured to discharge the mixture of air and fuel to the engine, a supercharger disposed between the mixer and the engine to compress the mixture discharged from the mixer and discharge the mixture to the engine, and an adjuster disposed between the supercharger and the engine to adjust an amount of compressed mixture supplied to the engine.

The present invention relates to a gas heat pump system. The gas heat pump system, according to one embodiment of the present invention, comprises: an air conditioning module comprising a compressor, an outdoor heat exchanger, an expansion apparatus, an indoor heat exchanger and a refrigerant line; and an engine module comprising an engine for combusting a mixture of fuel and air, thereby providing power for driving the compressor. The engine module comprises: a mixer for mixing and discharging the air and fuel; a supercharging means for receiving the mixture discharged from the mixer, compressing same, and then discharging same; an intercooler for receiving the mixture compressed in the supercharging means, cooling same by a heat exchange method, increasing the density thereof, and then discharging same; an adjustment means for receiving the mixture discharged from the intercooler, adjusting the quantity thereof, and then supplying same to the engine; and an exhaust gas heat exchanger for exchanging heat between a coolant and exhaust gas discharged from the engine, wherein the exhaust gas heat exchanger is directly connected to an exhaust manifold of the engine.

There is disclosed a refrigeration system comprising a refrigeration circuit that includes a compressor, a condenser, an expansion valve and an evaporator. A condenser fan of the refrigeration system is configured to operate, under the control of a controller, at a condenser fan speed that is set based on a current refrigeration demand on the system.

Systems and methods for heating and cooling a vehicle using a heat pump are disclosed herein. In one embodiment, a system for heating and cooling the vehicle includes a heat pump having: a compressor located in an engine compartment of the vehicle, and an evaporator located in a sleeper or a cab of the vehicle. The system also includes a controller for selecting a cooling mode or a heating mode for the heat pump. In one embodiment, the system includes a clutch for engaging the compressor with a transmission of the vehicle.

Proposed is a gas heat-pump system capable of supplying recirculation exhaust gas to an engine using an exhaust gas turbocharger and thus actively controlling an amount of the flowing recirculation exhaust gas and pressure thereof.

Proposed is a method of controlling a gas heat-pump system, the system including an air conditioning module having a compressor and indoor and outdoor heat exchangers, and an engine module having an engine combusting mixed gas and thus generating drive power for operating the compressor, the method including: measuring factors that are temperature and humidity of outside air, an rpm of the engine, intake pressure, and an air-fuel ratio, the factors having effects on driving of the engine in an operating environment where the engine is driven; measuring a necessary ignition voltage for an ignition coil in a manner that corresponds to at least one of a plurality of the measured factors; and calculating a dwell time at which the necessary ignition voltage is output by the ignition coil.

A system for controlling a compressor may include an engine controller controlling a fuel injection amount corresponding to an engine load and an opening amount of a throttle by reflecting a required torque required for an air conditioner, an operation information detector for detecting operation information according to driving state of the vehicle, a compressor generating pressure through a piston operation of a cylinder utilizing the power of the engine during operation of the air conditioner, and a controller determining an engine negative pressure of an intake manifold stored in the brake booster at a value, and when the negative pressure of intake manifold is below a first threshold value when the brake is operated, the engine enters a negative pressure recovery mode for predicting an insignificant negative pressure drop condition that falls below a second threshold value which is the A/C cut control condition and reduces the A/C duty.

A system for assessing and servicing a vehicle refrigeration system includes at least one sensor and at least one user device communicatively coupled to the at least one sensor. The at least one sensor is configured for attachment to an air vent portion of a vehicle, and is configured to collect at least one measurement. The at least one user device is configured to receive the at least one measurement, process the at least one measurement and generate at least one result, and display the at least one result.