Examples of HFC-Free, Cooling Technologies in Various Industrial Sectors:

Prepared by: Janos Maté, Greenpeace Internationalwith Claudette Papathanasopoulos, Greenpeace USA.

Just as there was no single “magic bullet” to replace CFCs, there is no single solution to replace HCFCs. But there is a wide variety of environmentally superior and technologically proven HCFC and HFC-free technologies to meet our cooling needs. Alternatives include natural refrigerants (CO2, hydrocarbons, ammonia, water); secondary cooling systems; desiccant cooling;evaporative cooling, absorption cooling; and innovative building designs that eliminate the need for mechanical cooling. The following sampling of companies and enterprises using HFC-free technologies is provided todemonstrate that there is already a wide array of safe and commercially proven HFC-free technologies available to meet nearly all those human needs that were formerly met by fluorocarbons;

Examples of companies using cooling equipment working with hydrocarbons and CO2 natural refrigerants:

The UK company Waitrose currently has seven stores using propane based refrigeration technology. The company plans to install propane refrigeration in all new and retrofitted stores, so that by 2020 all Waitrose stores will be HFC-free.  The company estimates that the propane refrigeration technology will reduce its carbon footprint by 20%. The system is based on a combination of high efficiency air-cooled chillers supplied byKlima-therm and manufactured by Geoclima that utilise R290 propane and uses water as the condensing medium to supply the Carter Retail Equipment integrated cabinets operating on R1270 propene hydrocarbon-based scroll compressors. It makes use of split coils to keep the propene charge under 400 grams, together with LPA Liquid Pressure Amplification and floating head pressure and conventional free cooling below 18°C. The system design allows for the harnessing of heat from the integral refrigeration units to deliver warmth into the space between cabinets, in order to offset the in store“cold aisle” effect. This helps boost efficiency and overcomes the need for a separate heating system.

In 2009 Tesco had five stores in the UK using CO2 based refrigeration systems. By the end of 2012, Tesco plans to have 150 stores using CO2 refrigeration.Outside the UK, Tesco has installed or is testing CO2 refrigeration in stores in Korea, Thailand, Hungary, USA, Turkey and Malaysia.

Auchan supermarket has two stores in Hungary fitted with CO2 /ammonia cascading systems. Reported energy savings are at least 35% better than with comparableR404a air cooled systems.

By the end of 2009, Morrisons planned to have 20 of its 418 UK stores using CO2refrigeration.

By 2010, Sainsbury’s plans to have 9 stores in the UK using CO2 refrigeration systems.

Starting in 2010, Marks & Spencer plans to have all its new supermarkets in the worldusing CO2 refrigeration. The company is training technicians in developing countries inthe use of natural refrigerants.

Download full document: COOLING-WITHOUT-HFCs-June-2010-Edition (2Mb)

How is my power being wasted?

Present day designs with head pressure controls were developed some 65 years ago. Higher head pressures were designed into a system so it would function well at lower outdoor temperatures. These higher pressures were needed to deliver the refrigerant to the cooling coils. Power costs a half a century ago were not a factor so the added cost of operation with lower efficiency did not matter.

At today’s power costs, inefficiency is an unacceptable part of ones overhead. See Brochure: Improving-Refrigeration-Dynamics-LPA

Our new range of Co2 (Carbon Dioxide) pumps have been designed to meet the requirements of natural refrigerants in refrigeration or air conditioning systems to help save our environment. Our equipment already eliminates at least 375,000 metric tons of CO2 emissions every year, and as more businesses discover HY-SAVE, the benefits to our planet increase globally.

Improved Cooling & Dehumidification for Supermarkets, Commercial & Industrial Applications by as much as 70%

HY-DRY™ Technology provides an affordable moisture removal increase by as much as 70% relative to existing systems without HY-DRY™. This lower humidity allows your building to change from “cold and clammy” to cool and dry fresh air. Everyone in the building will enjoy the ultimate comfort. A Cure for “Sick Building Syndrome” The most important factor in reducing airborne mold and bacteria count is the control of moisture in the building. At the end of these sliding banners are arrows, click through to see our other features.

Download the related article: Refrigerants-for-r22-replacements-retrofit Courtesy by Stephen Speltzer and Gus Rolloti of the Arkema Inc. North American Fluoro-chemicals business.

In addition to the related article;

When choosing to invest in alternative blends, it is important to realise and prevent the likelihood of inheriting increased mass flow rates and associated liquid line pressure drop, the root cause of liquid line flashing and lower efficiencies. See Effects of Flash Gas

Unless you choose to increase the liquid line pipe sizing to accommodate the increased mass flow of the chosen blend, pressure drop may have an adverse affect on system efficiency.

The table below demonstrates the severe effect liquid line velocity can have on liquid line pressure drop when comparing R22 with other various blends. Liquid line pressure drop is the root cause of liquid line flashing and poor system performance. Notice the sharp increase in liquid line pressure drop which is due to velocity². Should you be experiencing a negative effect on system performance and realizing higher energy power bills after a refrigerant conversion, this is likely to be due to an increase in liquid line flow rate and associated pressure drop. Contact us and we will be happy to provide you with a solution to dramatically improve and enhance your system efficiency.

By installing LPA® liquid delivery pumps you can expect to overcome these additional liquid line pressure drops and guarantee 100% liquid delivery to the expansion valves, both improving system capacity and reducing power consumption substantially.

Based on 120F (48°C ) SCT 15F SST (-9°C) R22 0.38 GPM/Ton | R407a 0.48 GPM/Ton | R507 0.72 GPM/Ton |

Simplicity, versatility and reliability have been the hallmark of the LPA® brand of pumps for over 25 years. Versatility is emphasised by the wide range of uses. Simplicity is highlighted by the ” orbital” magnetic drive, leak proof design. Reliability is proven by a combined operating record of over 315 million hours in a full time refrigeration environment.

Our latest range of self unloading CO2 LPA® pumps inherit the exceptional reliability of the LPA® range and covers a wide range of operating conditions from 1 to 65 GPM (3.78 to 245 litres/min), design working pressures of 1087 psi (75 bar) as standard and capable of providing up to 83 feet (25 metres) of head to suit most industrial applications.

At the end of these sliding banners are arrows, click through to see our other features>>

A well know Distribution center in Holland has recently installed Model 875 seen above to substantially improve their refrigeration performance. The plants compressor rack is located 18 feet (6 meters) below the expansion valves which is providing a 35 to 40% improvement in energy savings overcoming the liquid line pressure drop by using the LPA® pump.

LPA® Pumps for Natural Refrigerants

for Co2 and Propane applications…

HY-SAVE® has been manufacturing a high quality range of LPA® (Liquid Pressure Amplification) maintenance-free pumps for over 25 years.

Since 2007, the product line has been extended to include high pressure models able to reduce Co2 flash gas and improve the overall performance of CO2 refrigeration systems and greater energy savings.

Available with Stainless Steel or Copper connecting tubes.

Model 925-SS-PM10 (Stainless Steel Tube)

PS Max 75 bar (1087 psi)

Model 925-CU-PM10 (Copper Pipe Connection)

PS Max 44.2 bar (640 psi)

Flow Rate

Flow Rate – 60hz 15 to 70 GPM | 50hz 55 to 245 L/Min.

Maximum Head

Maximum Head – 60hz 85 feet | 50hz 18 Metres

Nominal Power

60hz – 1.85hp   50hz – 0.895kW

Connection Sizes

Model 925-CU-PM10 Inlet 2-1/8″ Outlet 1-1/8″

Model 925-SS-PM10 Inlet 2″  Outlet 1″

Fluid Temperatures -40 to +72C

Please contact us for the performance and power curves.

Download Brochure DATASHEET-925-DESIGN12