Zhongfu No.7 refrigerant ZL-7 (Kubao)

Product Introduction:

The Kubao series of refrigerants is primarily designed for the upgrade and transformation of existing refrigeration systems, including CO₂ systems, hydrocarbon direct expansion systems, ammonia systems, and flooded shell-and-tube units. These refrigerants can reduce the amount of refrigerant charge by 60%-90%. The organic active matter content in this product is ≥10,000 ppm, enabling effective d···

Application Areas

Cold storage renovation project: oil removal and ammonia removal Cold storage renovation Indirect cooling Cold chain  Upgrading of industrial refrigeration systems

Physical & Chemical Properties

Non-volatile Non-flammable Non-corrosive High specific heat Excellent low-temperature performance

Temperature Range 

-60℃---120℃


Zhongfu No.7 Common Physical Property Parameters Table (Freezing point: -60℃)

Temperature

Specific heat capacity

(kJ/kg·K)

Thermal conductivity

(W/m·K)

Viscosity

mPa·s (cp)

Density

(g/ml)

Boiling point

(℃)


20℃


2.93


0.555


2.76


1.2862


120


0℃


2.88


0.529


5.69


1.2868


120


-10℃


2.84


0.516


9.03


1.2875


120


-20℃


2.82


0.503


14.2


1.2879


120


-30℃


2.80


0.489


22.5


1.2886


120


-40℃


2.78


0.476


35.2


1.2895


120


-50℃


2.75


0.462


49.8


1.2902


120


-60℃


2.73


0.454


64.5


1.2907


120

Zhongfu No.7 concentrate concentration and freezing point reference values

Zhongfu No.7
Concentrate concentration

39%

49.5%

57%

60%

64%

69.7%

72%

74.5%

77%

79%


Freezing point


-10℃


-15℃


-20℃


-25℃


-30℃


-35℃


-40℃


-45℃


-50℃


-60℃


Specific gravity


1.131


1.165


1.203


1.214


1.229


1.246


1.259


1.268


1.28


1.286

Zhongfu No.7 Corrosion Test

Zhongfu No.7 Corrosion Test (Coupon specificationType II immersion for 168h)GBT 18175-2000

Test item

Pre-test weight

(g)

Post-test weight

(g)

Test duration in hours

(g)

Post-test weight loss

(mg)

Corrosion rate

(g/m2h)

Corrosion rate

(mm/a)


A3 steel


13.0112


13.0094


168


1.8


0.00531


0.00592


Copper


14.8153


14.8153


168


0


0.00000


0.00000


Aluminum alloy


4.5998


4.5973


168


2.5


0.00738


0.02325


304 Stainless Steel


13.1108


13.1102


168


0.6


0.00177


0.00196

Disclaimer:Portions of the content on this website are generated by artificial intelligence technology, and information is sourced from the internet, including but not limited to product parameters, scenario descriptions, etc. The content is for reference only and does not constitute any advice on transactions, construction, production, etc. Products, technologies, and engineering solutions are continuously updated, and changes may occur without notice. Information may contain omissions, delays, or errors; please make your own judgment. If you have any questions, please contact customer service for verification and consultation. National Customer Service Hotline:199-3077-5010
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