A fuel storage and delivery system for a refrigerated cargo vehicle. The system includes a first fuel tank for storing natural gas and a second fuel tank for storing natural gas, at least the first fuel tank is for storing the natural gas as liquefied natural gas (LNG); a vehicle fuel supply line fluidly connected to the first fuel tank for supplying fuel from the first fuel tank to a vehicle engine; and a refrigeration unit fuel supply line fluidly connected to the second fuel tank for supplying fuel from the second fuel tank to a transport refrigeration unit engine.

Disclosed is a cooling and heating system utilized in a vehicle using a fuel cell configured to generate electricity with hydrogen and oxygen supplied thereto as a power supply source, wherein a power supply source apparatus of a conventional hydrogen fuel vehicle is utilized as the cooling and heating system and wherein a heat exchanger necessary in the process of heat-exchanging liquefied hydrogen is utilized as a heating means and cool air generated in the process of cooling high-temperature coolant discharged after cooling the fuel cell through a heat exchanger is utilized as a cooling means.

Operating a transportation refrigeration unit (15) powered by a gas engine includes vaporising liquefied natural gas; and combusting the vaporised liquefied natural gas in the gas engine to power the transportation refrigeration unit (15). The transportation refrigeration unit (15) is used to refrigerate a cargo space (7) onboard a transportation refrigeration system (1).

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.

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.

A method, device and system for operating internal combustion engines with an increased pressure ratio and vehicle with this system. Internal combustion engines have a technically restricted pressure ratio, which limits the thermal efficiency. Gas turbines have so far had a maximum pressure ratio of 33:1, diesel engines have compression ratios of up to 23:1. An oxidizer is fed into the combustion chamber in (cold) liquefied condition under very high pressure. The fuel is also supplied in liquid form under high pressure. The pressure ratio of the oxidizer pump is 200, 500 or more. In the combustion chamber, the oxidizer and fuel react and expand to more than a thousand times the liquid volume. Depending on the fuel used, an expansion machine with a pressure ratio of around π=500 or more or an equivalent expansion ratio of ε=85 or more can be implemented.

A system for controlling a temperature a within an interior volume of a cargo trailer adapted to transport perishable goods is described herein. The system includes a fluid distribution assembly and a monitoring system. The fluid distribution assembly is configured to selectively channel a flow of cryogenic cooling fluid into the cargo trailer interior volume to facilitate adjusting a temperature within the interior volume. The monitoring system includes at least one sensor for sensing an environmental parameter of the cargo trailer, and a controller coupled to the sensor and to the fluid distribution assembly. The controller is configured to receive a monitoring signal indicative of the sensed environmental parameter, determine an environmental condition of the cargo trailer as a function of the environmental parameter, and provide a notification signal if the determined environmental condition is different than a predefined environmental condition.

A heat pump includes a refrigerant loop. The refrigerant loop includes a compressor, a first condenser, a vapor generator having a first region and a second region, a first expansion valve, a second expansion valve, and a first evaporator. A branching point is positioned between the first condenser and the vapor generator. The branching point diverts a portion of a first heat exchange fluid circulating through the refrigerant loop to the vapor generator. The first expansion valve is positioned between the branching point and the vapor generator. An outlet of the vapor generator is coupled to a mid-pressure inlet port of the compressor.

A cooling system includes a coolant transmitter that transmits coolant at a pressure greater than atmospheric pressure. The cooling system also includes an evaporation vessel at atmospheric pressure. The evaporation vessel can contain an amount of coolant at the boiling point of the coolant. The cooling system also includes a pressure reducer fluidically coupled to the coolant transmitter and the evaporation vessel. The pressure reducer can include an orifice. The cooling system is configured such that heat is transferred from the coolant in the coolant transmitter to the coolant contained in the evaporation vessel. An exit stream conduit can fluidically couple the coolant transmitter and the pressure reducer, with the exit stream conduit diverting a portion of the coolant from the coolant transmitter to the evaporation vessel.

The present invention relates to an air conditioner for a vehicle, which includes an air-conditioning case (200), and at least one door (100) mounted to be opened and closed at a predetermined position, wherein the door (100) is formed integrally with an arm pivot (140), and the arm pivot (140) includes a pin part, and ribs formed integrally with both sides of the pin part to reinforce rigidity of the pin part and offset noise. The air conditioner further includes distortion preventing parts formed on a rotary shaft to be dented and to be crossed to each other, thereby reducing a transformation rate of the door and securing accuracy of the pin part.