Log In   |   Sign up

New User Registration

Article / Abstract Submission
Register here
Press Release Submission
Register here
coolingZONE Supplier
Register here

Existing User

            Forgot your password
John O | April 2019

High adsorption levels reported with metal-organic framework and common refrigerant

By Josh Perry, Editor


Researchers from the U.S. Department of Energy (DOE) Pacific Northwest National Laboratory (PNNL) in Richland, Wash. reported high levels of adsorption using a metal-organic framework (MOF) and a common refrigerant, according to a report from the lab.


PNNL researchers have demonstrated high adsorption levels using MOF and a common refrigerant. (PNNL)


PNNL researchers have previously worked with MOF, porous compounds that adsorb refrigerants, to build adsorbent cooling systems but this is the first test with fluorocarbon R134a, which is a common refrigerant.


“They tested five types of MOFs,” the article explained. “All five displayed very high R134a saturation capabilities, but one in particular—the zirconium-based NU-1000—showed exceptional fluorocarbon uptake, adsorbing 170 percent of its weight, one of the highest values yet seen for MOFs. The results show promise for developing smaller cooling units that use less refrigerant, which could help save costs and lower greenhouse gas emissions.”


While fluorocarbon R134a has replaced chlorofluorocarbons to avoid damaging the ozone layer, they are still greenhouse gases, so this research is an important breakthrough for more efficient and environmentally-friendly air conditioning systems.


The research was recently published in Applied Energy Materials. The abstract stated:


“Through solar, wind, or geothermal reallocation sources, heat transformation via adsorption-based systems provides the means to address the high energy global demand from refrigeration and cooling. However, improvements toward a suitable, high performing adsorbent–refrigerant working pair must be made to boost the applicability of such systems.


“For the first time, a series of mesoporous metal–organic frameworks (MOFs) have been tested for R134a fluorocarbon adsorption for this purpose. Each of the selected MOFs exhibit excellent, reversible R134a adsorption. Among them, NU-1000 provided an exceptional fluorocarbon uptake of ∼170 wt % near saturation, which is among the highest values reported so far for MOFs.


“Exhibiting appropriate equilibrium isotherm behavior and working capacities as large as 125 wt %, it is evident that mesoporous MOFs—especially those with hierarchical structure—are promising candidates for chiller applications. Such high-performance materials provide significant potential for the design of future adsorption cooling systems.”

Choose category and click GO to search for thermal solutions


Subscribe to Qpedia

a subscription to qpedia monthly thermal magazine from the media partner advanced thermal solutions, inc. (ats)  will give you the most comprehensive and up-to-date source of information about the thermal management of electronics


Submit Article

if you have a technical article, and would like it to be published on coolingzone
please send your article in word format to articles@coolingzone.com or upload it here

Subscribe to coolingZONE

Submit Press Release

if you have a press release and would like it to be published on coolingzone please upload your pr  here

Member Login

Supplier's Directory

Search coolingZONE's Supplier Directory
become a coolingzone supplier

list your company in the coolingzone supplier directory

suppliers log in

Media Partner, Qpedia


Heat Transfer Calculators