Browse Prior Art Database

REFRIGERANT EXTRACTION FROM SEALED VALVELESS UNITS

IP.com Disclosure Number: IPCOM000249820D
Publication Date: 2017-Apr-10
Document File: 5 page(s) / 136K

Publishing Venue

The IP.com Prior Art Database

Abstract

A refrigerant extraction system recaptures refrigerant from a sealed, valveless cooling unit. The system cools down a unit containing a refrigerant to a temperature at which the refrigerant condenses and accumulates in a liquid state in the unit. The system then drills a hole in the unit and attaches a pipe at the hole. Finally, the system heats the unit to extract the evaporated refrigerant through the attached pipe.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 46% of the total text.

REFRIGERANT EXTRACTION FROM SEALED VALVELESS UNITS

ABSTRACT

A ​refrigerant extraction system recaptures refrigerant from a sealed, valveless cooling

unit. The system cools down a unit containing a refrigerant to a temperature at which the

refrigerant condenses and accumulates in a liquid state in the unit. The system then drills a hole

in the unit and attaches a pipe at the hole. Finally, ​the system heats the unit to extract the

evaporated refrigerant through the attached pipe.

PROBLEM STATEMENT

Refrigerants used in cooling units are environmental pollutants and need to be recaptured

at the end of the lifetime of the cooling unit. These refrigerants are contained in a closed unit

during the service life, and when the unit is decommissioned the refrigerants need to be recycled

properly. Proper recycling of refrigerants is critical as it helps to maintain a lower carbon

footprint as well as reduces greenhouse gas and ozone depleting refrigerants from venting into

the atmosphere. Most of the refrigerants are in gas form at ambient temperatures, which makes

recapturing difficult. Refrigerant recapture is usually performed using a valve installed on the

units. The valves are used for coupling the extraction unit to the cooling unit. While this

technique is feasible for large refrigeration units, it is not practical for small size

thermosyphon-based cooling units, because it is difficult to install the valves in the small sized

units. In the conventional small unit scenario, ​a hole is drilled in the body of unit to access the

refrigerant; however, because the refrigerant is in gas form, a large portion of the refrigerant may

escape during the drilling and recapturing process. The refrigerant that escapes into the

atmosphere may be harmful to nature. ​Accordingly, there is an opportunity to provide a method

and system to recapture refrigerant that is contained in a valveless sealed unit.

DETAILED DESCRIPTION

The systems and techniques described in this disclosure relate to a refrigerant extraction

system that is used to recapture refrigerants from a sealed, valveless cooling unit. The​ system​ can

be implemented for use in an Internet, an intranet, or another server environment. The system

can be implemented locally in a server environment. The system can include any electronic

device such as a cooling unit, extraction unit, or refrigeration unit, etc.

Fig. 1 illustrates an example method 100 for recapturing refrigerant from a sealed,

valveless cooling unit. Method 100 can be performed by the refrigerant extraction system.

The system cools down 110 a unit containing a refrigerant to a temperature at which the

refrigerant condenses and accumulates in a liquid state in the unit. The refrigerant is a substance

or a mixture that is used in refrigeration cycles. In most cycles, it undergoes phase transitions

from liquid to gas and gas to liquid again . Some common refrigerants include ​ammonia​, ​sulfur 1

dioxide​, and non-halogenated ​hydrocarbons​ su...