30Nov, 2023
    820-DS-050-VSD-B

    low lift liquid refrigerant pump

    The 820-DS-050-VSD-B (Dual Stage) LPA® (Liquid Pressure Amplifier) is a specialized pump used in various refrigeration applications to enhance system efficiency and performance. Its design focuses on continuous operation with minimal power consumption and low Net Positive Suction Head (NPSH) requirements, which is essential for maintaining the reliability and effectiveness of refrigeration systems.

    Applications include:

    • Centrifugal Compressor Cooling: Improving the efficiency of centrifugal compressors by providing stable liquid refrigerant supply at low or part load compression ratios.
    • Suppressing Liquid Line Flashing: Preventing the formation of flash gas in the liquid line, which can reduce system efficiency.
    • Super-heat suppression: Maintaining optimal superheat levels to ensure efficient refrigeration cycles, scale elimination, reduced drift loss, evaporative and water cooled condensers.
    • Compressor discharge cooling: Reducing compressor discharge temperatures to extend the lifespan of the equipment. Extraction of compression heat to outdoors utilizing the systems working fluid heat exchange.
    • DX-re circulation: Enhancing the direct expansion refrigeration cycle through improved refrigerant circulation having indirect vapor compression.
    • Anti cavitation, NPSH requirements: method used to under-cool the working fluid and prevent pump cavitation under adverse system running conditions/abnormalities.
    • Floating Head Pressure: Allowing the condensing pressure to adjust with ambient temperatures, leading to energy savings.

    The dual-stage design of the 820-DS-050-VSD-B makes it suitable for high-demand applications where precise control and efficiency are paramount. For those interested in integrating this technology into their refrigeration systems, it’s recommended to contact the provider for more detailed information and potential benefits specific to their operations.

    keywords, 820-DS, centrifugal compressor cooling, liquid injection, superheat suppression, discharge temperature de-superheating

      30Nov, 2023
      820-BR-044-IND-STD-B

      LPA Model 820-BR-044-IND-STD-B

      It’s good to know that even though the LPA pump model 820-BR-044-IND-STD-B series is no longer in production, the availability of spare parts at short notice ensures that existing systems using this model can continue to operate without significant downtime. Their latest 820 model can be found here.

      • Production era – May 2007 to Sep 2017
      • Trace serial No’s IN-00036 to IN-03739
      • Motor p/n: 820-10-STD-B
      • Impeller Service Kit p/n: 820-98-SRK-V1
      • Inlet dia. 1-1/8″ Outlet dia. 7/8″
      • Power .2 HP
      • Voltage 208-230/380-460 /3ph 50/60hz
      • All parts in stock next day delivery options available
      • Contact them below
      LPA pump model 820-BR-044-IND-STD-B
      hysave UL, PED, UKCA
      29Nov, 2023
      833-BR-044-PM8-STD-B

      LPA Model 833-BR-044-PM8-STD-B

      It’s good to know that even though the LPA pump model 820-BR-044-IND-STD-B series is no longer in production, the availability of spare parts at short notice ensures that existing systems using this model can continue to operate without significant downtime. Their latest 833 model can be found here.

      • Production era – Feb 2007 to Dec 2019
      • Trace S. No’s PM8-01751 to PM8-04347
      • Motor p/n: 833-10-STD-B
      • Impeller Service Kit p/n: 833-98-SRK-V1
      • Inlet dia. 1-5/8″ Outlet dia. 7/8″
      • Power .33 HP
      • 208-230/380-460V 3ph 50/60hz
      • All parts in stock next day delivery options available
      • Contact them below
      LPA pump model 833-BR-044-PM8-STD-B
      hysave UL, PED, UKCA

        28Nov, 2023
        860-BR-044-IND-STD-EA

        LPA Model 860-BR-044-IND-STD-EA

        It’s good to know that even though the LPA pump model 820-BR-044-IND-STD-B series is no longer in production, the availability of spare parts at short notice ensures that existing systems using this model can continue to operate without significant downtime. Their latest 860 model can be found here.

        • Production era – Jan 2006 to Nov 2009
        • Trace serial No’s IN-00001 to IN-01723
        • Motor (standard) p/n: 860-10-STD-EA
        • Motor (variable speed) p/n: 860-10-VSD-B
        • Impeller Service Kit p/n: 860-98-SRK-V1
        • Inlet dia. 1-5/8″ Outlet dia. 7/8″
        • Rated at 44 bar (640 psi)
        • Power .6 HP
        • 208-230/380-460V 3ph 50/60hz
        • All parts in stock next day delivery options available
        • Contact them below
        860-BR-044-IND-STD-EA
        hysave UL, PED, UKCA
        27Nov, 2023
        875-BR-044-IND-STD-B

        LPA Model 875-BR-044-IND-STD-B

        It’s good to know that even though the LPA pump model 820-BR-044-IND-STD-B series is no longer in production, the availability of spare parts at short notice ensures that existing systems using this model can continue to operate without significant downtime. Their latest 875 model can be found here.

        • Production era – Oct 2006 to Jan 2009
        • Trace S. No’s IN-00216 to IN-02018
        • Motor p/n: 875-10-STD-B
        • Service Kit p/n: 875-98-SRK-3.75-V1
        • Service Kit p/n: 875-98-SRK-3.25-V1
        • Inlet dia. 1-5/8″ Outlet dia. 1-1/8″
        • Power .75 HP
        • 208-230/380-460 3ph 50/60hz
        • All parts in stock next day delivery options available
        • Contact them below
        875-BR-044-IND-STD-B lpa pump

          22Nov, 2023
          how to get maximum refrigeration efficiency and energy savings ROI’s

          refrigeration energy savings

          To achieve maximum refrigeration energy efficiency and ROI, several strategies can be employed:

          1. Lowering Compression Ratio: Reducing the overall refrigeration system compression ratio is key. This can be done by maintaining lower condensing pressures and higher suction pressures within the system.
          2. Regular Maintenance: Cleaning air filters and coils, ensuring proper refrigerant charge, and regular system checks can prevent efficiency losses.
          3. Liquid Pressure Amplification (LPA): Installing LPA liquid refrigerant pumps in the system’s liquid line delivers 100% liquid refrigerant to the expansion valves, eliminating flash gas and enhancing system flow.
          4. Floating Head Pressure: Implementing floating head pressure control allows the system to operate at the lowest possible pressure for current ambient conditions, improving efficiency.
          5. Flash Gas Suppression: To eliminate liquid line flash gas, an LPA pump can be installed to suppress the flash before it reaches the system expansion valves. Flash gas does not contribute to cooling and thus represents a loss of efficiency.
          6. Improved System Design: Designing systems with shorter liquid lines, minimal bends, and proper insulation can prevent flash gas formation or install an LPA pump to overcome liquid line pressure drop.
          7. Sub-cooling: Increasing the level of sub-cooling ensures that the refrigerant remains liquid until it reaches the expansion valve, preventing flash gas or install an LPA pump to deliver 100% liquid to the expansion valves regardless of liquid line pressure drop.

          By combining these methods, especially the use of HY-SAVE’s LPA technology, significant energy savings can be achieved, leading to a better return on investment. These improvements not only reduce power consumption but also enhance the overall performance of the refrigeration system, providing more cooling with less energy, which is particularly beneficial in the commercial retail industry. For detailed guidance on implementing these strategies, contacting HY-SAVE or a refrigeration efficiency expert is recommended.

          What is flash gas?

          Flash gas formation in refrigeration systems is a phenomenon where the refrigerant, intended to be in liquid form, partially vaporizes before it reaches the expansion valve. This can occur due to heat absorption or pressure loss in the liquid line. The presence of flash gas is undesirable as it reduces the efficiency of the refrigeration cycle; the refrigerant in gas form does not contribute to cooling but still requires energy to be circulated by the compressors.

          Regarding the relationship between flash gas by weight and volume, as system head pressures are reduced, the percentage of flash gas by weight does indeed expand substantially. For example, 1% flash gas by weight at a condensing temperature of 38°C can expand into 20% flash gas by volume when system head pressures are reduced to condense at 15°C. If the flash gas by weight is 3%, then 42% of the liquid line could be filled with gas, leading to inefficiency and increased operational costs.

          The LPA (Liquid Pressure Amplification) pump saves energy by increasing the pressure of the liquid refrigerant in the liquid line, which allows for 100% pressure sub-cooled liquid to be delivered to the cooling coils. This process reduces the system head pressure to a minimum, which in turn lowers the compression ratio and the energy required for compression.

          flash gas chart

          The extent of energy savings achieved with an LPA pump depends on the initial inefficiency of the refrigeration system and the performance gains after the LPA pump installation. In a case study from a dairy farm in Northern Ireland, the implementation of Liquid Pressure Amplification technology in refrigeration systems showed potential for reducing energy consumption in retrofit applications. The study demonstrated that the use of LPA, in conjunction with other measures like liquid injection, can lead to significant energy savings and improved system performance.

          By maintaining the refrigerant entirely in liquid form up to the expansion valve, the LPA pump prevents the formation of flash gas, thereby enhancing the efficiency of the refrigeration system.

          Case Study

          School of Engineering and Design, Brunel University, Uxbridge, Middlesex,

          Hadawey, S. A. Tassou*, Y. T. Ge

          Case study, dairy farm, northern Ireland, Liquid Pressure Amplification in Refrigeration Systems – Potential for Reducing Energy Consumption in Retrofit Applications

          evaluation_of_liquid_pressure_amplification_technology_brunel_university_UKDownload

          10Nov, 2023
          about hysave

          Established in 1984

          Is a company that specializes in liquid refrigerant pumping technologies. They have been at the forefront of developing liquid line refrigerant pumps and other refrigeration applications aimed at enhancing refrigeration efficiency and fluid heat transfer. Their efforts contribute significantly to the reduction of carbon emissions caused by refrigeration systems globally.

          The company has been aiding the development of new technologies, improving upon existing methods, and creating efficient refrigeration designs. With decades of research into various methods of system design and operation, HY-SAVE has cultivated a wealth of knowledge and expertise in the field.

          Their product range is highlighted by a line of fractional horsepower LPA® “Liquid Pressure Amplification” liquid refrigerant pumps, which have been a staple in the industry for over 40 years. These pumps are utilized in a variety of heat transfer applications, making refrigeration systems more efficient and less energy-intensive.

          For those interested in making their systems more energy-efficient, HY-SAVE offers, case studies, and support for industry-related refrigeration heat transfer applications. Their liquid refrigerant pumps are versatile and can be installed in many different fluid-based heat transfer applications, including those involving CO2 fluids, propane, ammonia, and other refrigerants with higher specific heat capacities suited for efficient heat transfer.

          To learn more about their technologies and how they can benefit your specific needs, HY-SAVE encourages contact for further information and assistance in optimizing refrigeration systems for energy efficiency and environmental sustainability.

          Stepping back

          Celebrating 40 years

          1984-Company founded, Portland, Oregon, USA by Inventor Bob HYDE

          • First development and production of liquid line refrigerant pumps (for Freon) to “ensure 100% liquid” at the liquid metering device regardless of liquid line vertical height or pressure drop and associated liquid line flash gas.
          • HY-SAVE® technology established as a method of improving refrigeration efficiency.

           1986-First patent “Maximizing Refrigeration Capacity and Performance”

          • LPA pump (Liquid Pressure Amplification) introduced and established as slogan, trademark and brand
          • Sales and distribution for LPA pumps begin

          1987-US distributor agreements

          • Distributors appointed USA & Canada
          • New style brochure “Tomorrows Refrigeration Technology Today” introduced

          1989-Partner with US Gov. FEMP to support and document product efficiency and case studies

          • Introduced energy saving analysis and methods of determining efficiency
          • Improved performance and re-design of model 835 LPA pump
          • Improved model 850 for higher working pressures
          • Launched Stainless Steel Model 875 (Made  in America)
          • UL pressure strength and fatigue testing of models 809,815,820,833,860,875 recognized

          1990-New efficient TEFC motors for tougher environments tested

          • Introduced new testing platform, improved quality and R&D

          1992-HY-SAVE Inc. appoints representation in Florida, Key West and the Caribbean

          • Testing of liquid Injection into compressor cylinder heads for cooling began.
          • De-superheating of compressor cylinders using LPA pumped refrigerant started

          1994 HY-DRY de-humidification process, established and patented

          • Established automated selection and sizing program to project efficiency
          • Filed numerous patents to protect LPA pump performance and operation
          • Set up and established refrigerant two phase flow research with LPA as a means of providing heat transfer between mediums know today as DX free cooling
          • Expanded the network of regional distributors
          • Increased Horse Power of model 850 0.5ph to model 860 0.6hp

          1996 Plus 2 system for higher efficiency developed and patented

          • Expanded testing platform to include multi coupled pressure points
          • Improved facility to provide distributor and customer support

          1998 HY-SAVE IP, patents, designs and technology acquired by DTE Energy Technologies, Michigan, USA

          • Introduced first Pump-Pro 1 electronic pump controller that monitors and controls the induced pressure developed by the LPA pump to control and protect against abnormalities in a refrigeration system.
          • Developed new methods of heat transfer and system efficiency with two phase cooling mediums and methods today known as DX Free Cooling

          2000 HY-SAVE organization of regional and international distributors and OEM’s established

          • Energy efficient refrigeration research and development taken global
          • Established PP2 Version 2, as a method to protect LPA® pumps from running dry based on induced liquid differential pressure and quality of liquid entering the pump

          2003 HY-SAVE acquires IP, patents, designs, trademarks, existing agreements and technology from DTE Energy Technologies, Michigan, USA

          • Terminated US distributor lack of performance re organisation of existing channels
          • Continued research and development of LPA technologies including two phase non vapor compression cooling systems
          • Reorganized US manufacturing, introduced new stringent process and quality control for production requirements
          • EU PED Certification for Models 833, 860 and 875 compliance introduced

          2005 Assembly plant transferred to Europe from Portland, Oregon, USA

          • Improved distributor network
          • Enhanced the range of HFC LPA pumps for higher operating pressures

          2006 HY-SAVE USA opens in Tampa, Florida

          • Launched cost effective remote energy monitoring device with built in Ethernet and GPRS
          • Continued development of new methods to remove moisture in cold rooms in combination with HY-DRY

          2007 UK Pressure testing facilities enhanced to accommodate natural refrigerant pressures and process control

          2008 HFC range of LPA pumps redesigned for higher operating pressures

          • Introduced more stringent quality control and specifications
          • Launched 3rd generation pump protection and control
          • Enhanced range of LPA pumps compatible with Co2 pressures

          2009 HY-SAVE offices open in Dandong, China

          • Reviewed range of LPA pumps for added strength
          • Introduced mass manufacturing and control process of LPA pumps

          2010 Pump Protection module 3 to include free cooling operation and protection launched

          2011 Automated energy monitoring to precisely measure energy consumption launched

          • Model 925 LPA pump for HFC and Co2 applications, maximum working pressures at 50 bar (725 psi) introduced

          2012 Official launch of model 925 for cascade Co2 applications

          • Production of model 809 for manufacturing to suite a wide range of domestic / light commercial Co2 refrigeration applications.
          • Engineered solutions to overcome -40F working temperatures specific to model 925
          • Consultation with Engineering propose new model 975 to accommodate single circuit 400 tons refrigeration energy savings with LPA®
          • UL Fatigue and Pressure testing of model 925 certification awarded

          2013 Design and development of Phase 1 solar refrigeration with ejector LPA® pumps

          • Development of LPA® Liquid Refrigerant Pump boost liquid pressure 145 feet with ejector evaporating temperatures of (15F) annually.
          • Continued development and completion of super critical Co2 liquid pump design working pressure, 124 bar (1,800 psi) flow rate region o1 to 9GPM

          2014 Official launch of LPA® Model 809-NH3

          • Testing of Liquid Injection Screw compressors port for compressor cooling in high ambient countries.
          • Design and development Ammonia fluid LPA® pump for natural refrigerant applications. Design pressure rated at 540 psi
          • Design and development world’s first in-line and auxiliary (TES) Thermal Energy Storage solutions for air conditioning and refrigeration systems
          • Development of new type Propane LPA® pump for greener refrigeration application
          • Development of Sub-Zero -40F LPA Model 860 for Arctic environments

          2015 “Refrigeration on Demand” ™ The Thermal Storage Option introduced

          • Design and development higher pressure model 860-SS-080 rated at 80 bar for Co2 DXFC applications
          • Continued development model 875-SS-080 high pressure hold capacity LPA® pump Co2 applications

          2016 “Compressor cooling” introduced

          • Set up, development thermal store, latent source thermal storage DX refrigeration storage & solutions, energy reduction in overall power consumption
          • Introduced DX free cooling for split air conditioning units, including wall and ceiling mounted indoor units established for intense heat extract applications

          2017  Development range of Dual Stage (DS) Co2 Liquid Pressure Amplifiers solar AC

          • Model 833 rated 80 bar (1,087 psi) design operating pressure, self unloading, power 0.5HP
          • Model 820 rated 80 bar (1,087 psi) design operating pressure, self unloading, power 0.3HP
          • Range of DX Free Cooling split air conditioning units for with low power consumption and high efficiency
          • Established DX plate type latent heat thermal storage patent & sub applications

          2018 Patents awarded, Plate Thermal Storage for Air Conditioning used in conjunction with DX Free cooling for low energy thermal cooling for future generations

          • Expansion of HY-SAVE’s production area includes R&D, testing, proto-typing, environmental testing sector & quality management
          • Helium leak detection implemented quality control set up and introduced

          2019 Dual Stage model 820-DS introduced

          • The 820-DS performance, measurement, certification ended

          2020 Implementation UKCA post Brexit (United Kingdom)

          • Implementation of post Brexit UK equivalent of the PED HPiVS CE2810 (Directive 2014/68/EU)  and  CE1521 for the UKCA, United Kingdom.

          2021 Refrigerant based version and series LPA pumps upgraded to include Co2 & Nh3 fluids 80 bar design began.

          • Variant K65 connections approved higher operating conditions provided PS PED/UKCA 80 bar / 200 bar

          contact

          2023 R&D new concepts, designs and methods to improve refrigeration performance in hotter climates

          • Discharge superheat suppression, heat reclaim, compression heat, waste heat extraction to outdoors improves condenser performance and efficient operation in hotter geographical locations globally.