Hydrofluoroolefins

The agency’s extension of Section 608 to HFCs also applies to HFOs.

New components are helping to bring CO₂ refrigeration systems to warmer climates and heat pumps can broaden the application of this natural refrigerant still further, Giovanni Dorin, the company’s marketing director, told.

New components are helping to bring CO₂ refrigeration systems to warmer climates and heat pumps can broaden the application of this natural refrigerant still further, Giovanni Dorin, the company’s marketing director, told.

Honeywell has announced the availability of Solstice L40X, aka R455A, its low GWP replacement for R404A.

In this project, two newly developed refrigerants, R1234yf and R1234ze have been studied as promising drop-in replacements for the common high global warming potential refrigerants. In view of that, thermodynamic and transport properties of new refrigerants were obtained by RefProp version 7.01 to study and compare their cycle performances with current refrigerants. Furthermore, their environmental and safety aspects have been studied in order to predict probable risks and suitable preparations in different applications. Basic cycle data of both new refrigerants have been calculated for most commonly used condensing and evaporating temperatures. According to evaluation of these tables, both refrigerants generally have comparable COP and volumetric cooling capacity with R134a for an isentropic compression.

In this project, two newly developed refrigerants, R1234yf and R1234ze have been studied as promising drop-in replacements for the common high global warming potential refrigerants. In view of that, thermodynamic and transport properties of new refrigerants were obtained by RefProp version 7.01 to study and compare their cycle performances with current refrigerants.

The viability of new lower GWP alternative refrigerants in high ambients are said to have been proven in new tests.

The Oak Ridge National Laboratory (ORNL) High-Ambient-Temperature Evaluation Program for Low-Global Warming Potential (Low-GWP) Refrigerants aims to develop an understanding of the performance of low-GWP alternative refrigerants relative to hydrochlorofluorocarbon (HCFC) and hydrofluorocarbon (HFC) refrigerants in packaged or Rooftop Unit (RTU) air conditioners under high-ambient-temperature conditions. This final report describes the parties involved, the alternative refrigerants selection process, the test procedures, and the final results.

In the largest HFO chiller installation of its kind in the world, Trane CenTraVac’s using R1233zd(E) will replace the existing R22 chillers serving the Channel Tunnel.

A Waitrose supermarket is said to be achieving refrigeration energy savings of nearly 7% following the replacement of R404A with a new HFO-based blend.

A US manufacturer exhibited a ductless air-cooled water chiller using Opteon XL55, a lower GWP replacement for R410A, at the 2016 AHR Expo which opened on 25 January 2016.

Chemours is predicting that R449A, the lower GWP alternative refrigerant for R404A, will be adopted in more than 1,000 supermarket systems by the end of next year.

A Trane air-cooled chiller employing a new low-GWP refrigerant replacement for R410A is to be presented at the IIR conference in Yokohama.

HFO-1336mzz(Z) is to be promoted as a potential working fluid for high temperature heat pumps at this week’s ICR 2015 conference in Japan.

The EPA has announced that low GWP alternative refrigerants R450A, R448A, R513A and R449A are to be approved for use.

Bitzer has become the first compressor manufacturer to approve a full range of new low GWP refrigerants.

The EU’s REAL Alternatives learning programme for engineers working with low GWP alternative refrigerants will launch on March 19 with a free webinar.

Honeywell has today officially launched four new lower GWP refrigerants for applications ranging from supermarket refrigeration to industrial cooling.

DuPont has created an updated version of its DuPrex 4.0 refrigerant comparison software to mark the sales launch of its new Opteon product range.