Heat pump system for heating drying medium and recovering waste heat in stepped mode

A technology of drying medium and heat pump system, which is applied in the directions of heat pump, heating device, lighting and heating equipment, etc., can solve the problems of reducing the energy efficiency ratio of heat pump system, low energy efficiency ratio of heat pump application, difficult to digest heat pump system equipment cost, etc. Energy efficiency ratio, the effect of improving working conditions

Active Publication Date: 2015-07-22
广州万二二麦工程技术有限公司
View PDF3 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] However, the current application of heat pumps still faces the problem of low energy efficiency.
Drying and other operations usually require drying media such as air, which has a relatively large temperature rise to greatly reduce the relative humidity of the air to obtain a strong moisture absorption capacity, which requires the condenser of the heat pump system currently used to have a high condens

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Heat pump system for heating drying medium and recovering waste heat in stepped mode
  • Heat pump system for heating drying medium and recovering waste heat in stepped mode
  • Heat pump system for heating drying medium and recovering waste heat in stepped mode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] refer to Figure 1-4 , the present invention provides a heat pump system for waste heat cascade recovery and drying medium cascade heating, including a drying room 3, a drying medium inflow channel 2 and a drying medium outflow channel 4, the drying medium inflow channel 2 and the drying medium outflow channel 4 are connected to each other The drying room is connected in 3 phases.

[0076] Among them, the drying medium is a medium that can carry heat and transfer heat to heat the wet material and promote the evaporation of moisture in the wet material. The specific drying medium used is not limited here, and air, nitrogen, carbon dioxide, etc. can be used.

[0077] If the drying medium indirectly heats the wet material placed in the heat exchanger through the partition wall heat exchanger to promote the evaporation of moisture in the wet material, the drying medium can also use water vapor, heat transfer oil, water, etc. In this case , the channel where the evaporator ...

Embodiment 2

[0103] refer to Figure 6-7 , the heat pump system includes several heat pump units, and each heat pump unit includes a condenser, an evaporator, a compressor, and a throttle valve; 2, the evaporators in at least one group of heat pump units are located in the drying medium outflow channel 4, and the evaporators in at least one group of heat pump units are located outside the drying medium outflow channel 4 (that is, in the external environment), and the evaporators are located in the external environment Corresponding to the condenser in the heat pump unit, it is located between the inlet 201 of the drying medium inflow channel 2 and the evaporator is located in the drying medium inflow channel 2 and corresponds to the condenser in the heat pump unit. limit.

[0104] In the following, 5 sets of heat pump units are used for detailed description. The evaporators of the three sets of heat pump sets are located in the drying medium outflow channel 4, and the evaporators of the t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a heat pump system for heating a drying medium and recovering waste heat in a stepped mode. The heat pump system comprises a drying room, a drying medium flowing-in channel and a drying medium flowing-out channel, wherein the drying medium flowing-in channel and the drying medium flowing-out channel are communicated with the drying room. The heat pump system at least comprises two heat pump units. Each heat pump unit comprises a compressor, a condenser, a throttling valve and an evaporator. The condensers are arranged in the drying medium flowing-in channel. At least one evaporator is arranged in the drying medium flowing-out channel. The condensers in all the heat pump units are sequentially arranged in the drying medium flowing-in channel from an inlet to the drying room. The evaporators corresponding to all the heat pump units and located in the drying medium flowing-out channel are sequentially arranged from a drying medium flowing-out opening to the drying room. The temperature difference, the pressure difference and the compression ratio between the condensers and the evaporators of all the heat pump units are reduced, the energy efficiency ratio of each heat pump unit is increased, the energy efficiency ratio of the whole heat pump system is increased, and the working condition of a compressor unit is improved.

Description

technical field [0001] The invention relates to the technical field of dry heat pump design, in particular to a heat pump system for cascaded heating of drying medium and cascaded recovery of waste heat. Background technique [0002] A heat pump is a thermal device powered by a compressor that transfers heat from a low-temperature heat source to a high-temperature heat source through the evaporation of a refrigerant in a low-temperature heat source and condensation in a high-temperature heat source. [0003] The low-temperature heat source usually used for the heat absorption of the evaporator of the heat pump device is the medium around us, such as air, river water, lake water, groundwater, etc., or it can be the waste gas, waste water and waste liquid with waste heat generated in the industrial production process. [0004] Generally, heat pumps are used to heat media such as air, water, oil, etc., and these media are the high-temperature heat sources of the heat pump. [...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): F25B30/02
CPCF25B27/02F25B30/02F26B23/10F25B41/30
Inventor 薛世山李成伟王亮马骥刘玉恩王庆伦周萍周孑民
Owner 广州万二二麦工程技术有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap