Novel vehicle power/cold and heat energy supply system and working method thereof

Abstract

The invention belongs to the field of energy sources and power, and discloses a novel vehicle power / cold and heat energy supply system and a working method of the novel vehicle power / cold and heat energy supply system. The working method is characterized by comprising the steps that a first heat exchanger (7) of the waste heat bottom circulation recycles waste heat of high-temperature flue gas (6) of the top circulation of an internal combustion engine, a second heat exchanger (9) recycles waste heat of a low-temperature cooling agent (5), an absorption condenser (20) can also recycle low-temperature cold energy of liquefied natural gas (1), and the low-temperature cold energy is converted into mechanical energy through a second turbine (28). In the winter mode, heat is supplied to a vehicle through a heat supply tuyere (26); in the summer mode, the vehicle is refrigerated through a cold wind tuyere (27). The system scheme adopts non-azeotropic mixing media (10) to recycle waste heat and waste cold energy of a vehicle engine (3) in a stepwise mode, various energy requirements of the vehicle are met, the advantage of the high utilization rate of the whole energy is achieved, and the novel vehicle power / cold and heat energy supply system is suitable for energy conservation and emission reduction transformation of existing vehicle energy supply systems.

Description

technical field [0001] The invention relates to a novel vehicle power / cooling and heating energy supply system and working method, belonging to the field of energy and power. Background technique [0002] At present, the energy consumption of transportation vehicles accounts for an important proportion of my country's total energy consumption. The fuel thermal efficiency of conventional diesel locomotives is only 1 / 3, and the remaining 2 / 3 is mainly lost to the environment as waste heat through flue gas and coolant. In addition, vehicle exhaust emissions have become an important source of urban air pollution. With the increasingly stringent requirements for energy conservation and emission reduction, the use of liquefied natural gas as fuel and the use of waste heat recovery technology to improve the energy conversion efficiency of vehicle energy supply systems and reduce pollution emissions per unit of production capacity have become current research hotspots. The actual v...

AI Technical Summary

Problems solved by technology

A large number of waste heat organic Rankine cycle system schemes or Kalina cycle schemes have been proposed. Although they can improve their energy-saving characteristics under certain operating conditions, they generally seldom consider the impact of seasonal load demand changes on vehicle energy supply and demand balance, or waste heat. Adaptability of Recovery Scheme to Vehicle Seasonal Load Demand

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