u.s. epa certi˜edadvreftech.com/wp-content/uploads/2017/03/art-rs-52-brochure.pdf · rs-45...

RS-52(R-428A)

Zero ODP Drop-in Replacement for R22 at low temperatures, R502 &

interim ozone depleting blends

U.S. EPA Certi�ed

NON-FLAMMABLE

(281) 338-2179 [email protected]

www.advancedreftech.comProof 3 - Final01-30-17

Proof 3 - Final01-30-17

Zero ODP replacement for R22 & R502 ozone depleting blends & compatible with all lubricants

RS-52

RS-52 is a non ozone depleting near azeotropic refrigerant blend which can replace R22, R502 and the interim ozone depleting. blends including R402A, R403B, R408A & R411B without the need to change the existing lubricant or make any changes to the system other than adjustment to the expansion device in some cases. RS-52 is targeted towards lower temperature applications.

RS-52 is compatible with all lubricants including both the traditional oils such as mineral and alkylbenzene oils and

also the new synthetic polyol ester lubricants. Convert-ing to RS-52 is a straightforward process which avoids a costly and often technically unsatisfactory retro�t (eg draining the oil from the system, replacing the seals etc).

RS-52 is a capacity match for R502 and has a temperature glide of less than 1°C. RS-52 can also replace R22 in systems which are rated for R502. RS-52 is suitable for use in �ooded systems.

HIGH CAPACITY The high capacity of RS-52 quali�es its use as a direct replacement for R502, R403B (69L), R402A (HP80), R408A (FX10) & R411B without any loss of performance. Discharge pressures are similar to R507 and R404A.

The high capacity of RS-52 at low temperatures is a prominent feature of this new refrigerant.

PERFORMANCE CHARACTERISTICS Close performance match for R502

Can replace R22 in low temperature applications

Compatible with MO, AB & POE lubricants

Lower discharge temperatures

Near azeotropic blend

Suitable for new and existing equipment

Capacity match for R502

Low temperature glide <1ºC Zero Ozone Depletion Potential

Non �ammable Low toxicity

No changes to hardware needed

RS-52 Capacity & Coe�cient of PerformanceOpen System: 35ºC Condenser

3500

3000

2500

2000

1500

1000

500

0-50 -40 -30 -20 -10 0

Evaporator Temperature ºC

COP

Capa

city

(kJ/

m 3

)

3.5

3

2.5

2

1.5

1

0.5

0

R22 CapacityR502 CapacityRS-52 CapacityR22 COPR502 COPRS-52 COP


LUCRICANTS RS-52 is compatible with both the traditional and new synthetic lubricants so that there is no need to change the oil when converting to RS-52. RS-52 is suitable for use with mineral, alkylbenzene and polyol ester oils.

RS-52 avoids the costly and often technically unsatisfactory changeover to the new synthetic lubricants required of a full retro�t to R404A.

DISCHARGE TEMPERATURERS-52 has lower discharge temperatures, particularly compared to R22, which provides considerable operating bene�ts including an improvement in the reliability of the system and avoidance of lubricant breakdown.

APPLICATIONS RS-52 is suitable for use in applications where R22, R502, R403B (69L), R402A (HP80), R408A (FX10) & R411B are commonly found including, but not restricted to, supermarket display cases, ice machines, cold storage, transportation of foodstu�s, freezer cabinets, freeze dryers & environmental test chambers.

NEW EQUIPMENT RS-52 with its rapid pull-down feature is suitable for use in new equipment with the added bene�t of being able to be used with both the traditional & new synthetic lubricants.

NO CHANGES TO HARDWARE RS-52 can replace R22 & other Ozone Depleting Substances at low temperatures without changes to the existing hardware. Approximately 10% less RS-52 is required to replace R22, & possibly a slight adjustment to the expansion device may be required. The changeover process is simple, straightforward & can be very cost e�ective in comparison to a full retro�t to R404A.

SERVICING Because RS-52 is a blend, it should be charged into the system in the liquid as opposed to vapour form. Vapour �lling is possible when the total cylinder contents are charged into the system. Because RS-52 is a near azeotrope it has a very low temperature glide of less than 1°C.

TECHNICAL DATA Technical data including thermodynamic tables, physical properties, retro�t guidelines, materials of compatibility, questions & answers etc are available from the web site.

RS-52

RS-52 Discharge TemperatureOpen System: 35ºC Condenser

250

200

150

100

50

0-50 -40 -30 -20 -10 0

Evaporator Temperature ºC

Dis

char

ge T

empe

ratu

re ºC

R22 Discharge TemperatureR502 Discharge TemperatureRS-52 Discharge Temperature


RS-52 (R428A)Composition %HFC 125 77.5HFC 143a 20.0 R600a 1.9R290 0.6

HCFC replacement R22, 502 & interim blendsTemperature glide Approximately 0.8ºCDrop-in or long term BothLubricant MO/AB/POEODP Atmospheric lifetime 37 yearsGWP 100 year ITH 3100500 year ITH 1075

RS-52 R502Molecular Weight

Temperature Glide ºC

Boiling point (1atm)

Critical Temperature

Critical Pressure

Liquid Density at 25 ºC

Density of saturated vapour at 25 ºC

Speci�c heat of liquid at 25 ºC

Speci�c heat of vapour at 1 atm & 25 ºC

Vapour Pressureat at 25 ºC

Latent heat of vaporisation at boiling point

Ozone Depletion Potential

Flammability limit in air (1 atm)

Inhalation exposure (8 hr day & 40 hr week)

ºC

ºF

ºC

ºF

bara

psia

kg/m3

kg/m3

kJ/kgºC

kJ/kgºC

bara

psia

kJ/kg

ODP

vol%

ppm

107.5

0.5

-46.7 (1)

-52.1 (1)

70.8

159.9

38.1

552

1053

70.2

1.52

12.68 (1)

183.9 (1)

189.2 (1)

0

none

1000

111.6

0.2

-45.4 (1)

-49.7 (1)

82.2

180.0

40.7

59.1

1217

62.2

1.25

0.706

11.5

167

173

0.33

none

1000

RS-52 PHYSICAL PROPERTIES


TYPE AND DESCRIPTION RS-52 is a non �ammable near azeotropic refrigerant which has a zero ODP and is also compatible with both traditional and synthetic lubricants so that a retro�t is not required.

RS-52 can be used as a "Drop-in" replacement for R22, R502 and interim blends containing HCFCs which are now subject to a phase out timetable. The use of RS-52 avoids the need for an expensive and often technically unsatisfactory retro�t involving a change of lubricant and alterations to some of the hardware in the system.

APPLICATIONS RS-52 can be used in most applications where R502 and interim replacement blends are currently used including but not restricted to supermarket display cases, ice machines, cold storage, transportation of foodstu�s etc.. RS-52 can also replace R22 in systems which are rated for R502. Conversion to RS-52 is a simple and straight forward process ( as shown below). RS-52 provides a long term solution at low cost to the problem of replacing Ozone Depleting Substances.

SERVICE WORK Because it is a blend, it is recommended that RS-52 be charged into systems in the liquid as opposed to the gaseous phase.

Since in most cases there is no need to change the existing lubricant, RS-52 is straightforward to use as the procedure below outlines.

LUBRICANTS RS-52 is compatible with both mineral and alkylbenzene oils found in R502 systems, and also with the polyol ester lubricants. Therefore, in most cases there is no need to change the lubricant although compressor manufacturers' recommendations regarding lubricity should be followed. However, in systems with extensive & complex piping con�gurations, or a large volume of liquid in the receiver, POE may need to be added.

MATERIALS COMPATIBILITY RS-52 is compatible with all materials commonly used in refrigeration systems previously charged with R22 or R502. In general, materials which are compatible with R22 and R502 can be used with RS-52. It is recommended to check equipment manufacturer's retro�t literature and obtain recommendations from equipment manufacturers with regard to materials' compatibility. In older systems which have been operating on R22 for many years, replacement of some seals may be required due to the di�erent composition of RS-52 which contains HFCs.

ENVIRONMENTAL DATA None of the components of RS-52 contains chlorine so that it has no ability to deplete the ozone layer.

As with all hydro�uorocarbons (HFCs), RS-52 does have a direct global warming potential (GWP), but this is counterbalanced by its lower Total Equivalent Warming Impact (TEWI).


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206.

721

7.4

228.

524

0.0

252.

026

4.3

276.

929

0.1

303.

731

7.7

332.

234

7.1

362.

6

- 50

- 48

- 46

- 44

- 42

- 40

- 38

- 36

- 34

- 32

- 30

- 28

- 26

- 24

- 22

- 20

- 18

- 16

- 14

- 12

- 10 - 8 - 6 - 4 - 2 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60C

FPS

IGPS

IGPS

IG


*Saturated Suction Temperature

GENERAL REPLACEMENT GUIDE

CFC

HCFC

HFC

R-22 REPLACEMENT GUIDER-22 AIR CONDITIONING

R-22 REFRIGERATION

CHILLERS AIR SYSTEMS

R-434A (RS-45) R-424A (RS-44) R-424A (RS-44) R-424A (RS-44)

All TypesPlate TypeTube & TubeShell & TubeFlooded and Non-�ooded

R-402A (HP80)R-402B (HP81)R-408A (FX10)

R-12

1996

JANUARY 2010

R-424A (RS-44)

Medium TempSST* -5C (20F)

& Above

R-434A (RS-45)

Low TempSST* -6C (19F)

& Below

R-401A (MP39)R-401B (MP66)R-409A (FX56)

R-41B (HOTSHOT)

R-22

R-502

R-426ARS-24

R-428ARS-52

R-434ARS-45

See R-22Replacement

Guide fordetails

R-424ARS-44

See R-22Replacement

Guide fordetails

RS-24 I RS-44RS-45 I RS-52 1) ASHRAE Safety Rating A1 (non-�ammable2) Zero ODP3) No oil change required4) No retro�t needed for most applications5) Low glide, near azeotropic


Following are Case Studies


RS-52 (R-428A) Replaces Ozone Depleting Refrigerant in Bidgood’s SupermarketBidgood’s Supermarket in Goulds, Newfoundland has a long history of concern for the environment. Roger Bidgood, the founder of the company, started doing his part to protect the environment in the early 1960’s by giving free garbage bags to local hunters and �shermen with their grocery orders. He encouraged them to bring their own garbage back out with them and also remove any trash they found on their wilderness trips.

The Bidgood’s Supermarket specializes in traditional Newfoundland fare and produces a number of local delicacies such as seal �ipper pie and moose pie which are sold exclusively at the store in Goulds. Nefoundlanders from far and wide go out of their way to visit the store regularly to pick up the high quality and traditionally prepared foods and products such as rabbit and caribou that are not available at your typical supermarket.

While Bidgood’s has focused their attention on foods made from local products using local recipes and made by local people, they also carry all the typical supermarket products so their customers can enjoy one stop shopping for their grocery needs. Rick Bidgood keeps a close eye on the performance of the many refrigeration systems which are vital to maintaining the quality of the fresh and frozen goods found in the store.

Rick relies on Provincial Refrigeration, Ltd., a well known local refrigeration contractor, to install and service the refrigeration equipment at the store. In the early 1990’s, Provincial Refrigeration replaced the existing individual refrigeration systems with modern compressor rack systems originally designed to operate on CFC R502. Under the Montreal Protocol, Canada eliminated the production and import of CFC’s in 1995. With the CFC phase-out, one of the systems has since been converted to HP80 (HCFC R402A). HCFCs are also being phased out under the Protocol so a long term solution was needed to allow the equipment to operate to the end of its useful life.


Don French, president and co-owner of Procincial REfrigeration, Ltd., was charged with �nding a non-ozone depleting replacement for HP80 in use at the store. Having considered the alternatives available and working closely with Kerr Controls Ltd., a well known local wholesaler, he recommended that HP80 be replaced with RS-52 (R428A).

RS-52 is a non ozone depleting Drop-in replacement for R502 and the interim ozone depleting blends such as HP80 (also including R403B, R408A, R411B). Kerr Controls Ltd distributes Rs-52 and the RS Series of refrigerants supplied by Refrigerant Services Inc., located in Halifax Nova Scotia.

When it became necessary to replace the condenser on the second compressor rack system at Bidgood’s, which was an air cooled Hussmann low temperature rack system with four 30 HP compressors, at the same time the opportunity was taken to convert the system to RS-52. Service manager and co-owner of Provincial Refrigeration, Rob Kean supervised the project which took place in April, 2008. The R502 refrigerant was recovered, the new condenser was installed, the system was leak tested, evacuated and recharged with RS-52. Rob reported that it was a very simple conversion and no retro�tting or modi�cations were necessary. Provincial and Bidgood’s are very happy with the performance of RS-52 and there have been no service problems with the system since the conversion.

Ron Samson, manager of Kerr Controls, Ltd., St. John’s Branch, is well acquainted with the RS series of refrigerants and has been marketing these products since 2001. Ron says his customers have been very happy with the performance of RS-24 (R426A) in existing R12 applications and also Rs-44 (R424A) for existing R22 applications. The recent introduction of RS-52 (R428A) is a welcome addition to the product line-up and will provide for a safe and easy to use long term replacement for ozone depleting refrigerants in low temperature applications. All RS series refrigerants are compatible with existing mineral oils and no retro�tting is required.

Refrigerant Services, Inc. and Refrigeration Solutions, Ltd. are part of the RPL Holding Ltd. Group of companies dedicated to replacing ozone depleting substances at minimal expense.


Many companies are now in the process of migrating away from R22 refrigerants in order to comply with the 2015 phase-out of HCFCs. Yorkshire baker Speedi-bake has already completed the process and taken advantage of A-Gas's new Portable Environmental Recovery System (Persy) to ensure a smooth transition.

Speedibake is part of Associated British Foods and employs 600 people. Since 1984, it has become one of the leading producers of bakery products in the UK with a range of more than 200 products and turnover of about £7om.

Speedibake operates from two bakeries in Wake�eld and Bradford, baking own-label goods from mu�ns to doughnuts to speciality breads for retail and food service customers.

Any downtime in production can have a major impact on the business, so when the company decided to look at various alternatives for replacing its R22 systems, this was an overriding consideration.

In consultation with its refrigerant contractor GEA Refrigeration UK, Speedi-bake assessed its available options: installing new plant was a logical, if expensive solution but GEA recommended recovering the R22 using the A-Gas technology and replacing it with RS-52 -one of the few refrigerants suitable for �ooded applications.

A-Gas had extensively trialled Persy at its Bristol plant and various customer sites. The results showed that use of the system enabled refrigerant recovery in far quicker time than traditional 'push- pull' methods. A three day process can be reduced to as little as a single day (dependant on system size) using the portable system.

R22 Phase-OutA-Gas Rises to the Bake-O� Challenge

The Qualities of Persy

A-Gas designed and built Persy in-house to meet the needs for a portable, but high capacity, recovery system.

While it was designed principally for supermarket retro�t applications, the company says it o�ers a number of bene�ts that are also suitable for a wider range of applications and can also be used for system decommissioning and recharging.

The equipment is portable and compact, has its own power supply and can recover refrigerant up to 10 times faster than standard recovery equipment.

Speci�cations include:

1,500 kg/hr recovery rate (liquid push pull)

140 kg/hr vapour recovery rate

100 cu m/hr integral vacuum pump

500 kg integrated receiver

PLC controlled

Own dedicated power supply via a generator

Refrigerant recovery was an attractive proposition for Speedibake and once its project manager Steve Young was satis�ed with the advantages of using RS-52 and the minimal impact using A-Gas' recovery system would have on production, the process was then scheduled to take place over a weekend. To minimise disruption to the more than 900 tonnes a week production volume, Speedibake planned a two-day shut-down, stepped up output and put in place a production contingency plan as a precaution.

During the R22 conversion, A-Gas recovered 2.1 tonnes of refrigerant. After an oil change, Speedibake's chillers were recharged with virgin RS-52 and the entire system was back up and running in 13 hours.

Dave Back, sales and contracts manager for GEA, explains the process: "We decanted 2 tonnes of refrigerant within a couple of hours and within two hours after that the new refrigerant was being charged, with the result that the contingency plans did not have to be implemented."

Mr Young adds: "The recovery system worked very well, as we could isolate a small corner of the goods yard in which to keep the recovery drums, while positioning the recovery system immediately outside the plant room. The speed and e�ciency of the refrigerant transfer was very impressive."

Speedibake is enthusiastic about the bene�ts of migrating to RS-52. "We were expecting to see a net increase in the power consumed, compared with R22, says Mr Young. "But because of an increased capacity of the system by the refrigerant, the running time of the plant has been reduced."

Roger Smith, A-Gas refrigerants product manager, says RS-52 has proved a useful R22 replacement: "RS-52 has a low glide value and can reduce energy consumption. Although designed as a replacemem for R502 and HCFC blends such as R402A and R408A, it is also an excellent replacement for R22 at low temperatures where the system is designed to withstand R502 pressures.

"RS-52 o�ered an ideal solution for Speedibake and using our portable recovery system meant that we could o�er a �exible self-contained approach to conversion."

A Yorkshire baker has undergone an R22 change-out in record time, thanks to new technology that speeds the process of conversion. RAC reports


Location: Nova Scotia Community College Leed St. Halifax, Nova Scotia, Canada

Date: November 2006

Application: Simulated Supermarket Installation

System Equipment Speci�cations:

Condensing Unit: CLW 283AA Manuerop Water-cooled, 208/3/60 Refrigerant R-502

Display Case: Hussmann 4 door Frozen Food Case

Suction Line 150 Ft. 7/8” Pipe Liquid Line 150 Ft. 3/8” Tubing Vertical Suction Lift: 10 ft.

Controls: Case Thermostat controlling liquid line solenoid. Sporlan 1 ton R-502 thermostatic expansion valve installed.

Modi�cations to equipment before trial:

The receiver capacity of the condensing unit was increased from 10 lbs. to 20 lbs. to allow for the extended suction and liquid lines of the system.

No other modi�cations or retro�tting were done before conversion to RS-52.

Notes: Installation of this system was similar to what might be found in typical small supermarkets and convenient stores in North America. A Water Cooled Condensing unit was used because of a lack of outside air available to the test site within the college campus buildings.

RS-52 (R428A) Trial


R-502 RS-52Average Suction Pressure:

Average Suction Temperature:

Average Discharge Pressure:

Average Discharge Temperature:

Average Space Temperature:

Average Evaporator Air on Temperature:

Average Evaporator Air o� Temperature:

Average Evap superheat:

Average Amperage:

AVERAGE RUN TIME TO PULL DOWN

Average oil level in glass

Average Cond. Water in temperature

Average Cond. Water out temperature

22 psig

-5.7 F

250 psig

N/A

1 F

N/A

N/A

5 F

7.13 amps

144 minutes

1/3

46 F

104 F

23 psig

+6 F

250 psig

N/A

1 F

N/A

N/A

11 F

7.7 amps

77 minutes

1/3

43 F

88 F

Notes: 1. Condensing Unit was equipped with a water regulating valve which was set to maintain 250 psig head pressure.2. All readings are averages over several hours of operation.3. During pull down TXV did appear to hunt more with RS-52 than R-502 but, once the desired space temperature was obtained, valve operation was similar to R-502 with a slightly higher superheat reading.4. Pressures in PSIG5. Temperatures in degrees F.6. No adjustments were made to the equipment during the trial.

General Observations:Oil return with RS-52 was similar to R-502.Suction Pressures with RS-52 were similar to R-502Compressor amperage was similar with RS-52 to R-502Temperature Pull Down Time was much shorter with RS-52 than R-502.

Conclusions:1. The hydrocarbon component of RS-52 provides the necessary oil return for typical supermarket low temp systems.2. Equivalent general operating performance was achieved on the conversion of RS-52.3. There appeared to be improved performance dueing initial temperature pull down operation.4. Adjustments to the thermostatic expansion valve could further improve overall performance & energy usage.


Advanced Refrigerant Technologies, LLC


(281) 338-2179 [email protected]

www.advancedreftech.com

Advanced Refrigerant Technologies, LLC


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