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Medium-low temperature heat source generating set based on energy cascade utilization and thermal circulation method thereof

A low-temperature heat source and power generation device technology, applied in steam engine devices, machines/engines, steam recovery, etc., can solve problems such as low thermal efficiency

Inactive Publication Date: 2013-08-21
上海交通大学中原研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, a key issue that makes it difficult for medium and low temperature heat source power generation technology to be promoted globally is that the thermal efficiency is low, only about 10%.

Method used

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  • Medium-low temperature heat source generating set based on energy cascade utilization and thermal circulation method thereof

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Embodiment Construction

[0020] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0021] Such as figure 1 As shown, this embodiment includes: a first feed water pump 1, a preheater 2, a first evaporator 3, a superheater 4, a first steam turbine 5, a first generator 6, a first condenser 7, and a second evaporator 8. Separator 9, second steam turbine 10, second generator 11, mixer 12, low pressure heater 13, second condenser 14, second feed water pump 15, high pressure heater 16 and pressure reducing valve 17. The installation and connection relationship of the above components is as follows: the outlet of the first feed water pump 1 is connected to the inlet of the preheater 2, the outlet of the...

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Abstract

The invention relates to a medium-low temperature heat source generating set based on energy cascade utilization and a thermal circulation method thereof. The medium-low temperature heat source generating set comprises a top cycle system assembly and a bottom cycle system assembly connected with the top cycle system assembly. On the basis of the principle of energy cascade utilization, the generating set is formed by connecting two different medium-low temperature heat source generating cycles in parallel, wherein the top cycle is an organic matter Rankine cycle, and the bottom cycle is a Kalina cycle; and the thermal efficiency of the Kalina cycle at the bottom is higher than that of the organic matter Rankine cycle when electricity is generated by using the lower temperature heat sourcedischarged from the top cycle. The invention is more suitable for recycling low-grade heat sources, conforms to the principle of energy cascade utilization as compared with the original technique. Thus, the thermal efficiency of the generating set of the invention is further enhanced.

Description

technical field [0001] The present invention relates to a device and method in the technical field of energy utilization, in particular to a medium and low temperature heat source power generation device based on energy cascade utilization and a thermal cycle method thereof. Background technique [0002] With the intensification of the global energy crisis and climate warming, countries around the world urgently need to develop new power generation technologies. The world is rich in medium and low temperature heat sources, and the sources are also very extensive. A large amount of solar energy, geothermal energy, and industrial waste heat are all medium and low temperature heat sources. At present, the utilization of medium and low temperature heat sources is mainly limited to direct utilization, such as heating, drying, etc., and this utilization can only be limited to small-scale utilization, and the degree of utilization is also very low. Converting these medium and low ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01K23/00F01K27/00F01K25/10F01K19/00F01D15/10
Inventor 于立军徐建冯驯
Owner 上海交通大学中原研究院
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