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Working medium pump drying method in ORC low-temperature waste heat power generation equipment

A technology for power generation equipment and low-temperature waste heat, which is used in lighting and heating equipment, heating to dry solid materials, and no heating to dry solid materials. It can solve problems such as component damage and achieve the effect of accelerating the evaporation rate.

Active Publication Date: 2020-05-01
科源能源装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The temperature of liquid R245fa (pentafluoropropane) is as low as -50°C. If there is any moisture remaining in the ORC low-temperature waste heat power generation system, the water will quickly solidify and form ice balls to form ice blocks, causing damage to various components in the ORC low-temperature waste heat power generation equipment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for drying a working fluid pump in ORC low-temperature waste heat power generation equipment, comprising the following steps:

[0023] Drying step with high-temperature air: pass hot air at 95°C for 1.5 hours to the working fluid pump in the ORC low-temperature waste heat power generation equipment;

[0024] Drying step of passing medium and high temperature air: passing hot air at 60°C for 7 hours to the working fluid pump in ORC low temperature waste heat power generation equipment;

[0025] The usual warm-air drying procedure: pass 5 kg of compressed air at room temperature for 13 hours into the working medium pump in the ORC low-temperature waste heat power generation equipment.

[0026] The drying method of the working medium pump in the ORC low-temperature waste heat power generation equipment also includes the following steps: a leak detection step is provided after the normal warm air drying step: a leak detection step is provided after the normal warm ...

Embodiment 2

[0031] A method for drying a working fluid pump in ORC low-temperature waste heat power generation equipment, comprising the following steps:

[0032] Drying step with high-temperature air: pass hot air at 115°C for 0.7 hours to the working fluid pump in the ORC low-temperature waste heat power generation equipment;

[0033] Drying step with medium and high temperature air: pass hot air at 85°C for 5 hours to the working medium pump in the ORC low temperature waste heat power generation equipment;

[0034] The usual warm air drying step: pass 7 kg of compressed air at room temperature for 11 hours to the working fluid pump in the ORC low-temperature waste heat power generation equipment.

[0035] The drying method of the working medium pump in the ORC low-temperature waste heat power generation equipment also includes the following steps: a leak detection step is provided after the normal warm air drying step: a leak detection step is provided after the normal warm air drying st...

Embodiment 3

[0040] A method for drying a working fluid pump in ORC low-temperature waste heat power generation equipment, comprising the following steps:

[0041] Drying step with high-temperature air: pass hot air at 110°C for 1 hour to the working fluid pump in the ORC low-temperature waste heat power generation equipment;

[0042] Drying step with medium and high temperature air: pass hot air at 75°C for 6 hours to the working fluid pump in the ORC low temperature waste heat power generation equipment;

[0043] The usual warm air drying step: pass 6 kg of compressed air at room temperature for 12 hours to the working fluid pump in the ORC low-temperature waste heat power generation equipment.

[0044] The drying method of the working medium pump in the ORC low-temperature waste heat power generation equipment also includes the following steps: a leak detection step is provided after the normal warm air drying step: a leak detection step is provided after the normal warm air drying step...

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PUM

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Abstract

The invention discloses a working medium pump drying method in ORC low-temperature waste heat power generation equipment. The method comprises the following steps of high-temperature air feeding and drying, wherein hot air of 110 DEG C is fed into a working medium pump in the ORC low-temperature waste heat power generation equipment for 1h; medium-high-temperature air feeding and drying, wherein hot air of 75 DEG C is fed into the working medium pump in the ORC low-temperature waste heat power generation equipment for 6h; normal-temperature air drying, wherein 6bar normal-temperature compressed air is fed into the working medium pump in the ORC low-temperature waste heat power generation equipment for 12h. The hot air of 110 DEG C is fed firstly, water in the working medium pump flows outrapidly and heats the working medium pump, and therefore the evaporation rate of liquid water can be increased. After most water drops are blown away from the working medium pump in the ORC low-temperature waste heat power generation equipment along with the hot air, the hot air of 75 DEG C is used for continuous drying so that moisture in the pump can be blown out. Then, the 6bar normal-temperature compressed air is fed for 12h, gas containing water vapor in the pump is blown away from the working medium pump in the ORC low-temperature waste heat power generation equipment, and the purpose ofdrying is achieved.

Description

technical field [0001] The invention belongs to the technical field of working medium pump drying in ORC low-temperature waste heat power generation equipment, in particular to a working medium pump drying method in ORC low temperature waste heat power generation equipment. Background technique [0002] Organic Rankine Cycle (Organic Rankine Cycle referred to as ORC) utilizes the low boiling point of R245fa (pentafluoropropane). Under low temperature conditions, R245fa (pentafluoropropane) evaporates when it is heated. The expander performs work, converting low-grade thermal energy into high-grade mechanical and electrical energy. Therefore, the organic Rankine cycle power generation technology is an energy-saving and emission-reduction technology that recycles the low-grade waste heat generated in the industrial production process and converts it into high-grade electric energy. [0003] In the organic Rankine cycle, the low-temperature waste heat power generation equipmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B3/02F26B5/00F26B5/16F26B21/10G01M3/34
CPCF26B3/02F26B5/005F26B5/16F26B21/10G01M3/34
Inventor 郑成亮曹新民姚龙涛
Owner 科源能源装备有限公司
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