Industrial R404A Refrigerant Supply for Low-Temperature Cooling Systems

 

The following attributes define the physical characteristics of R404A refrigerant.

 

Parameter	Description
Refrigerant Classification	Hydrofluorocarbon Blend
Composition	HFC-125 / HFC-143a / HFC-134a
Molecular Weight	97.6
Boiling Temperature	−46.5°C
Ozone Depletion Potential	0
Flammability Classification	Non-flammable
Physical Form	Liquefied gas under pressure

 

Technical Specification:

Items	Index			Results
	Superior grade
Appearance	colorless and feculent			Pass
Odor	No strange stench			Pass
Purity (% ≥)	99.8			99.9
R125 ω%	42-46			44
R143a ω%	51-53			52
R134a ω%	2-6			4
Moisture (ppm ≤)	10			8.2
Acidity (as HCl) (% ≤)	0.00001			＜0.00001
Evaporation residue(% ≤)	0.01			＜0.01
Chlorides (cl-)(% ≤)	0.0001			＜0.0001
No condensable gas cubic fraction (% ≤)	1.5			＜1.5

 

These characteristics determine system compatibility and operational response under different temperature and pressure conditions.

 

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The performance of any refrigerant is closely tied to how efficiently it transitions between physical states. R404A exhibits stable thermodynamic response across the full vapor compression cycle.

 

Compression Response

When entering the compressor, the refrigerant exists primarily as low-pressure vapor. Mechanical compression increases both temperature and pressure, preparing the working fluid for heat rejection.

 

Condensation Dynamics

As the high-pressure vapor flows through the condenser, thermal energy is released. The refrigerant gradually transitions into a liquid state while maintaining elevated pressure.

 

Expansion Characteristics

Passing through an expansion mechanism, liquid refrigerant experiences a rapid pressure drop. This produces a temperature decrease and initiates partial vapor formation.

 

Evaporation Process

In the evaporator, R404A absorbs heat from the surrounding environment and fully vaporizes. This heat absorption produces the cooling effect required for temperature control.

 

 

R404A differs from single-component refrigerants because it consists of multiple hydrofluorocarbon components combined in a controlled ratio.

 

Temperature Glide Phenomenon

During phase change, blended refrigerants transition across a temperature range rather than a fixed point. This behavior influences heat exchanger performance and system design considerations.

 

Pressure Consistency Under Load Variation

R404A maintains predictable pressure characteristics across varying thermal loads, which supports operational stability in continuous cooling environments.

 

Heat Transfer Efficiency

The mixture composition affects vapor density and latent heat transfer capability, contributing to reliable cooling performance in low-temperature systems.

 

 

R404A refrigerant is commonly associated with systems requiring sustained low-temperature operation. Its thermodynamic profile supports continuous heat absorption under demanding cooling conditions.

 

Typical operating environments include:

The refrigerant's functional properties allow consistent operation across extended duty cycles.