MétaCan
Menu
Back to cohort
Record W2801447622

A Review of Refrigerant R-1234yf and R-1234ze

2016· review· en· W2801447622 on OpenAlexaboutno aff
Nirajkumar Mehta, Pragnesh D Kandoliya

Bibliographic record

VenueJournal of Emerging Technologies and Innovative Research · 2016
Typereview
Languageen
FieldEngineering
TopicRefrigeration and Air Conditioning Technologies
Canadian institutionsnot available
Fundersnot available
KeywordsRefrigerantRefrigerationInjectorGlobal-warming potentialIsobutaneEnvironmental scienceMaterials scienceWaste managementChemistryEngineeringGreenhouse gasMechanical engineeringOrganic chemistryHeat exchangerGeology
DOInot available

Abstract

fetched live from OpenAlex

In the present study, recent research is considered about new generation refrigerant R-1234yf and R-1234ze (E). Chlorofluorocarbons (CFCs) had been phased out under the Montreal Protocol, CFC alternative refrigerants are searching for based on the condition of no chlorine atoms because of zero ODP. It seemed that conversion from CFC refrigerant to HFC refrigerant or natural refrigerant had progressed smoothly in the two decades. As for the low GWP refrigerants, hydrofluoric-olefins (HFOs), especially, HFO-1234yf (CF3CF=CH2: 2, 3, 3, 3-tetrafluoropropene) and HFO-1234ze (E) (CF3CH=CHF: trans-1, 3, 3, 3-tetrafluoropropene) are recently focusing in the world. Both of these HFOs have low GWP values (HFO- 1234yf is 4 and HFO-1234ze (E) is 6), and expecting as the next generation refrigerant. R-1234yf and R-1234ze (E) can used in mobile air conditioning and ejector refrigeration system.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.001
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: none
GenreCandidate signal: Review · Consensus signal: Review
Teacher disagreement score0.009
Threshold uncertainty score0.031

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.001
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0010.001
Bibliometrics0.0040.003
Science and technology studies0.0000.000
Scholarly communication0.0010.002
Open science0.0010.001
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0090.003

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.109
GPT teacher head0.431
Teacher spread0.322 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designNot applicable
Domainnot available
GenreReview

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations0
Published2016
Admission routes1
Has abstractyes

Explore more

Same venueJournal of Emerging Technologies and Innovative ResearchSame topicRefrigeration and Air Conditioning TechnologiesFrench-language works237,207