An arrangement for converting thermal energy from lost heat of an internal combustion engine into mechanical energy includes a working circuit for a working medium. An expansion engine is disposed in the working circuit. A heat exchanger is mounted upstream of the expansion engine in a flow direction of the working medium where the working circuit extends through the heat exchange. The heat exchanger includes an exhaust gas recirculation heat exchanger having a cold part and a warm part, an exhaust gas heat exchanger, and a phase transition cooling in the internal combustion engine. The heat exchanger is formed by serial connection in a sequence of the cold part of the exhaust gas recirculation heat exchanger, the exhaust gas heat exchanger, the phase transition cooling in the internal combustion engine, and the warm part of the exhaust gas recirculation heat exchanger.

A cooling system for a combustion engine and a WHR-system in a vehicle (1) includes a first line (23) directing coolant at a first temperature (T.sub.1) to a condenser (18) of the WHR system, a second line (24) directing coolant at a second temperature (T.sub.2) to the condenser (18), a valve arrangement (25, 26, 29) by which the flow rate of the coolant in at least one of the lines (23, 24) is adjustable and a control unit (20) configured to control the valve arrangement (25, 26, 29) such that the coolant directed to the condenser (18) from the lines (23, 24) has a temperature and a flow rate which results in a cooling of the working medium in the condenser (18) to a predetermined condensation temperature/pressure at the actual operating condition.

An arrangement for converting thermal energy from lost heat of an internal combustion engine into mechanical energy where a working circuit is provided for a working medium which can be heated and evaporated using the lost heat. An expansion machine for obtaining mechanical energy from the heat of the working medium is provided in the working circuit where the working circuit extends through a heat exchanger mounted upstream of the expansion engine in the flow direction of the working medium. The internal combustion engine includes a cylinder having a cylinder liner. A cooling duct is provided in the cylinder liner through which the working medium flows. The cylinder liner is formed by centrifugal casting where the cooling duct is introduced into one centrifugal mold as an insert prior to the centrifugal casting.

The invention provides a method and apparatus for purifying water. The apparatus includes a water still for receiving water and a hot air maintained in a heat-exchanging relationship to obtain a hot water and a cold air. The apparatus also includes one or more water purification units configured to receive the hot water from the water still in which the hot water is further heated using thermal energy received from one or more thermal energy sources to obtain steam and waste matter. A water purification unit of the one or more water purification units includes a waste matter remover for removing the waste matter from the water purification unit. The water still includes a heat-exchanging unit configured to receive the steam from the one or more water purification units. The steam received at the heat-exchanging unit is condensed to obtain purified water within the heat-exchanging unit using the cold air.

A cooling arrangement for a WHR-system in a vehicle, includes a first cooling circuit including a first radiator in which a circulating coolant is cooled, and a second cooling circuit including a second radiator in which a coolant is cooled to a lower temperature than the coolant in the first radiator. A condenser inlet line directs coolant from one of the cooling circuits to a condenser to provide cooling for a working medium flowing therethrough. A cooling adjusting device adjusts the temperature of the coolant in the inlet line to the condenser by the coolant in the other cooling circuit based on information received about the coolant such that the coolant in the condenser inlet line provides the estimated suitable cooling of the working medium in the condenser.

A control method of a waste heat recover device, the control method includes measuring a first state value of an organic refrigerant discharged from an organic refrigerant evaporator by a first state value measuring unit; determining whether the first state value measured by the first state value measuring unit deviates from a first set range and controlling a flow rate of an organic refrigerant introduced into the organic refrigerant evaporator by a first organic refrigerant variable valve when it is determined that the first state value deviates from the first set range.

An engine waste heat recovery (WHR) system includes a turbocharger WHR portion, an exhaust WHR portion, an expander in the exhaust WHR portion, a condenser, valves, and a controller. The expander receives a working fluid in a superheated form and converts thermal energy in the working fluid into mechanical energy or electrical energy. The condenser condenses the working fluid for recirculation through the engine WHR system. The recuperator is fluidly coupled between the expander and the condenser to allow the working fluid to flow from the expander to the condenser. The recuperator transfers thermal energy to a flow of the working fluid from the turbocharger WHR portion. Each valve is fluidly coupled to one of the turbocharger WHR portion and the exhaust WHR portion. The controller is electrically coupled to the valves, and the controller selectively controls the valves to selectively circulate the working fluid through the engine WHR system.

The present invention discloses an ORC container comprising the following components: a container, in particular an ISO container, having arranged therein an ORC device for converting heat energy into electrical or mechanical energy, wherein the ORC device comprises a working medium; a heat introduction device provided on the ISO container and used for supplying heat energy from an aggregate container; and a spacer device arranged on the container, wherein the spacer device is suitable for providing an intermediate space between the ORC container and the aggregate container. The present invention additionally relates to a system comprising an ORC container and an aggregate container as well as to a method for installing such a system.

A waste heat recovery apparatus includes an evaporator, an expander, a condenser, a liquid-phase refrigerant supply device, and a control device. The control device is configured to control the liquid-phase refrigerant supply device so as to bring the supply of the liquid-phase refrigerant by the liquid-phase refrigerant supply device into a stopped state at least until an amount of the liquid-phase refrigerant stored in the evaporator becomes equal to or lower than a predetermined low refrigerant amount, during operation of the internal combustion engine.

A method for operating an internal combustion engine having a waste heat utilization device including a waste heat utilization cycle in which a valve mechanism, an evaporator, and an expander are arranged, may include adjusting the valve mechanism between an evaporator position and a bypass position via a control/regulating device as a function of at least one operating parameter of the internal combustion engine. The method may also include calculating at least one of a power and an energy generatable by the waste heat utilization device via the control/regulating device as a function of the at least one operating parameter of the internal combustion engine. The method may further include switching the expander between an active state and an inactive state via the control/regulating device as a function of the at least one of the calculated power and the calculated energy.