Combined cooling heating and power system for thermal energy gradient utilization

Abstract

The invention discloses a combined cooling heating and power system for thermal energy gradient utilization and belongs to the technical field of energy. The combined cooling heating and power system for thermal energy gradient utilization comprises a steam Rankine cycle loop subsystem, an organic Rankine cycle loop subsystem and an absorption refrigeration circulation loop subsystem, wherein a first generator of a first expander of the steam Rankine cycle loop subsystem is driven to generate; dead steam or extraction steam in an outlet is divided into two paths, respectively working as a heat source for the organic Rankine cycle loop subsystem and the absorption refrigeration circulation loop subsystem; and energy gradient utilization can be achieved, so energy utilization rate can be improved. The steam Rankine cycle loop subsystem can provide power, the organic Rankine cycle loop subsystem can provide power electricity and daily use hot water and the absorption refrigeration circulation loop subsystem can provide cold water for air conditioners in summer and hot water for radiation type tail end air conditioners in winter. The system can achieve combined heat and power generation or combined cold and heat power generation via a valve according to user needs; and the combined cooling heating and power system for thermal energy gradient utilization is flexible, reliable, energy-saving and practical.

Description

technical field [0001] The invention belongs to the field of energy technology, and relates to a thermoelectric system, in particular to a cooling, heating and power cogeneration system for cascaded utilization of high-efficiency thermal energy. Background technique [0002] With the development of society, economic prosperity and population growth, the demand for energy continues to grow. Whether it is in nature or in human production and life, there are many phenomena of insufficient energy utilization. If only a part is utilized as heat, most of the heat energy is discharged and left idle, which not only wastes heat energy, but also causes thermal pollution to the environment. Therefore, while opening up new energy sources, more attention is paid to improving the utilization rate of existing energy sources. It is of great practical significance to find an efficient, environmentally friendly and practical technology. [0003] The traditional Rankine cycle uses steam, an...

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Problems solved by technology

[0003] The traditional Rankine cycle uses steam, when the temperature of the heat source is lower than 370°C, it is uneconomical to use the steam Rankine cycle

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