Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Absorption cycle system having dual absorption circuits

a cycle system and absorption circuit technology, applied in the direction of sorption machines, refrigeration machines, light and heating equipment, etc., can solve the problem of limited practicability of the absorption cycle system and achieve the effect of high energy efficiency

Inactive Publication Date: 2011-09-22
EI DU PONT DE NEMOURS & CO
View PDF7 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides an absorption cycle system that utilizes two absorption circuits, one of which operates at lower temperatures than the traditional system. This allows for cooling and heating applications at low ambient temperatures and higher cycle energy efficiency. The system also allows for the simultaneous use of thermally sensitive absorbents and high-temperature heat sources in one circuit and the other. Additionally, the system recovers heat from the refrigerant vapor and transfers it to the first generator, resulting in higher energy efficiency.

Problems solved by technology

However, a drawback of such a standard system, which typically uses lithium bromide and water as the absorbent / refrigerant pair, is that the minimum feasible absorber operating temperature is limited by the crystallization temperature of the absorbent / refrigerant mixture.

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
  • Absorption cycle system having dual absorption circuits
  • Absorption cycle system having dual absorption circuits
  • Absorption cycle system having dual absorption circuits

Examples

Experimental program
Comparison scheme
Effect test

second embodiment

[0026]FIG. 2 shows an absorption cooling system of the present invention. Such a system is generally shown at 110. The system includes an evaporator 110-1 disposed in fluid communication with a first absorption circuit, shown generally at 120 in FIG. 2, a second absorption circuit, shown generally at 130 in FIG. 2, disposed in fluid communication with the first absorption circuit, and a condenser 110-2 disposed in fluid communication with the second absorption circuit and the evaporator.

[0027]The evaporator of the system of the present invention includes an inlet line 114 for delivering a refrigerant to the evaporator. Again, the refrigerant in the system of the second embodiment of the present invention is water, it being understood that other refrigerants may be used in this system. The evaporator of the second embodiment operates in the same way that the evaporator of FIG. 1 does. Thus, refrigerant is partially evaporated liquid when it enters the evaporator. The evaporator also ...

first embodiment

[0033]Second pump 130-2 pumps the high refrigerant-content second-absorbent / refrigerant mixture via a line 131 to the second heat exchanger 130-3, which, like the first heat exchanger, may be a shell and tube type heat exchanger. The second heat exchanger pre-heats the said mixture before it enters the second generator 130-4 via a line 132. The second generator is supplied with high-temperature heat from any suitable external source. In one embodiment, within the second generator is a bundle of tubes (not shown) which carry combustion gases, steam, or hot water which are supplied to the generator via a line 133. The combustion gases, steam or hot water transfer heat into the high refrigerant-content second-absorbent / refrigerant mixture. The heat causes the mixture to release refrigerant vapor, which exits from the second generator through a heat recovery line 136a, leaving a low refrigerant-content mixture behind in the second generator. The refrigerant is now a high pressure vapor,...

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

An absorption cycle system utilizes an additional absorption circuit in conjunction with a traditional absorption circuit. The absorbent used in the additional absorption circuit could contain an ionic compound, or any absorbent with relatively low crystallization. Mixtures of such absorbent with water remain liquid at temperatures lower than the minimum feasible operating temperature of the traditional lithium bromide water absorbent solutions of the prior art.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims the priority benefit of U.S. Provisional Patent Application No. 61 / 118,042, filed Nov. 26, 2008.BACKGROUND[0002]1. Field of the Disclosure[0003]The present disclosure relates to an absorption cycle system which has dual absorption circuits. Such a system is useful in a wide range of absorption cycle applications including low temperature refrigeration, comfort air conditioning and space heating.[0004]2. Description of Related Art[0005]Single effect absorption cycle systems with a single absorption circuit are known in the art. In a typical absorption cycle system, a refrigerant, such as water vapor, is absorbed into an absorbent mixture, such as an aqueous lithium bromide (LiBr) solution, and then is released out of the absorbent mixture. The absorber is part of a single absorption circuit, which includes a pump, a heat exchanger, an expansion or pressure reduction device and a generator, where the refrigerant is r...

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
Patent Type & Authority Applications(United States)
IPC IPC(8): F25B15/00
CPCC09K5/047Y02B30/62F25B15/06F25B15/008Y02A30/27Y02P20/10F25B15/02F25B1/00
Inventor KONTOMARIS, KONSTANTINOS
Owner EI DU PONT DE NEMOURS & CO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com