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Two Application Modes and Systems of Steam Heat Pump

A heat pump system and steam technology, applied in heat pumps, pumps, piston pumps, etc., can solve the problems of not being able to adapt to high temperature, increasing steam pressure and temperature, etc.

Active Publication Date: 2020-02-11
陈则韶
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to recover the latent heat of vaporization of low-pressure low-grade waste steam, and to overcome the deficiency that existing heat pumps with freon and carbon dioxide as working fluids cannot adapt to high temperatures, this invention proposes two application modes and systems for steam heat pumps, which use steam as working fluids. Through the steam booster compression, the steam pressure and temperature are increased to restore the use value of the steam industry; the steam heat pump is suitable for the recovery and utilization of waste steam energy at 80-120 °C, and the energy saving effect is far higher than that of ordinary heat pumps. The COP value is as high as 15-20, economical high value

Method used

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  • Two Application Modes and Systems of Steam Heat Pump
  • Two Application Modes and Systems of Steam Heat Pump
  • Two Application Modes and Systems of Steam Heat Pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] The inhalation steam mass flow rate of the steam supercharger of embodiment 1: ;The mass flow rate of the actual output steam ;

[0075] The average theoretical power consumption per ton of steam compressed is

[0076] (12),

[0077] The average actual power consumption per ton of steam compressed is

[0078] (13),

[0079] The cost of obtaining 0.7 MPa saturated steam of the open steam heat pump energy-saving system in Example 1 of the present invention is calculated as 0.65 yuan / kW-h for electricity price, and the power consumption cost per ton of steam compression is,

[0080] Yuan,

[0081] Equipment depreciation maintenance fee: 100,000 yuan / year;

[0082] 8000 hours of operation per year, steam delivery per hour , the annual compressed steam volume:

[0083] ;

[0084] Steam price: yuan / tonne;

[0085] The annual economic benefits of steam booster recovery of low-pressure steam:

[0086] ,

[0087] Cost analysis of using natural gas ...

Embodiment 2

[0097] figure 2 It is Embodiment 2 of the present invention, a schematic diagram illustrating the principle of a displacement circulation heat pump system for the concentration of aqueous solution materials; the displacement circulation heat pump system of Embodiment 2 includes all the components of the open heat pump system of Embodiment 1: Steam supercharger A, motor D, water replenisher system, cooling water system, intelligent control cabinet system; the displacement circulation heat pump system of embodiment 2, other components and their connection relationship except the intelligent control cabinet system are as follows: figure 2 express; figure 2 As shown, on the steam inlet pipeline L1 of the steam turbocharger, the steam inlet main valve F1, the electric inlet valve F2, the Venturi tube C, and the inlet steam pressure P1 are respectively installed on the position of the steam inlet from far to near. and temperature probe T1; the lower side of the lowest part of t...

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PUM

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Abstract

The invention provides two application manners and systems of a steam heat pump. The two application manners and systems of the steam heat pump are characterized in that externally supplemented flowing steam is adopted as a working medium of the steam heat pump; the two application manners are a relay application manner and a material moisture replacing application manner; relay application is used for increasing the pressure and temperature of steam in a waste steam source and steam transportation, and the system is a relay opening type system; material moisture replacing application is usedfor drying a wet material or concentrating a moisture-containing solution, the system is a steam replacing and circulating type system, main devices comprise a steam supercharger, a water supplementing system, an intelligent control cabinet system and a steam replacing heat exchanger, and basic elements for designing of a steam-wet material heat exchanger and a steam-solution heat exchanger are provided; a calculating relation between a theoretical water supplementing quantity and a practical water supplementing quantity is given out in order to prevent overheating of the heat pump; and the steam heat pump is suitable for energy recover of waste steam with the temperature ranging from 80 DEG C to 120 DEG C, the energy-saving effect is far superior to that of an ordinary heat pump, the coefficient of performance (COP value) of the heat pump reaches up to 15 to 20, and the economic value is high.

Description

technical field [0001] The invention relates to the energy-saving fields of power machinery and heat pumps, and is a special novel steam heat pump system. Background technique [0002] Many chemical plants, such as the production process of phthalic anhydride, produce a large amount of low-grade steam and exhaust steam. They contain a large amount of latent heat of vaporization, but due to low temperature and pressure, they cannot be reused in industry. The scheme of combined cooling and heating can consume low-grade waste steam or exhaust steam produced by some factories in winter and summer, but due to seasonal restrictions, it cannot be used continuously and synchronously with industrial production; while factories that produce low-grade steam, In order to recover low-grade waste steam and exhausted steam water, a large amount of cooling water is needed to cool low-grade exhausted steam and exhausted steam, and in order to recycle the cooling water, it is necessary to bu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B30/02F04B37/18F04B35/04F26B23/00
CPCF04B35/04F04B37/18F25B30/02F26B23/004Y02P70/10
Inventor 陈则韶韩华威
Owner 陈则韶