Hrp Series Water Source Hi-Rise Vertical Stacked Heat Pumps

Total Page:16

File Type:pdf, Size:1020Kb

Hrp Series Water Source Hi-Rise Vertical Stacked Heat Pumps HRP SERIES WATER SOURCE HI-RISE VERTICAL STACKED HEAT PUMPS TECHNICAL CATALOGUE DEVELOPMENT “D” HRP SERIES | OMEGA TABLE OF CONTENTS 1. PRODUCT OVERVIEW .......................................................................................................................... 1 1.1 Key Features .......................................................................................................................................................3 1.2 Engineering Design ...........................................................................................................................................4 1.3 System Flow Options .........................................................................................................................................6 1.4 Flow Direction Details .......................................................................................................................................7 2. PRODUCT DETAILS ............................................................................................................................. 9 2.1 Cabinet Design .................................................................................................................................................10 2.2 Unit Details ........................................................................................................................................................11 2.3 Chassis Details .................................................................................................................................................13 2.4 Vibrational Isolation ........................................................................................................................................14 3. CABINET DIMENSIONAL INFORMATION ...................................................................................... 15 3.1 Gold Series Heat Pump ...................................................................................................................................16 3.2 Silver Series Heat Pump .................................................................................................................................17 4. RISER DIMENSIONAL INFORMATION ............................................................................................ 19 4.1 Riser and Handing Conventions ....................................................................................................................20 4.2 Sizing Reference Guide ..................................................................................................................................21 4.3 Hose Kits ............................................................................................................................................................23 5. SUPPLY & RETURN AIR DETAILS .....................................................................................................25 5.1 Discharge Arrangements ............................................................................................................................... 26 5.2 Line of Sight Baffle ......................................................................................................................................... 28 5.3 Acoustic Return Air Details ........................................................................................................................... 29 5.4 Perimeter Return Air Details.......................................................................................................................... 32 5.5 Baseboard Height Detail ................................................................................................................................ 35 6. ELECTRICAL DATA & CONTROLS .....................................................................................................37 6.1 Electrical Data .................................................................................................................................................. 38 6.2 Wiring Diagrams ............................................................................................................................................. 39 6.3 Electrical Details .............................................................................................................................................. 41 6.4 Fan Motor Control Connection ...................................................................................................................... 42 6.5 Sequence of Operation for Standard Heat Pump ...................................................................................... 43 7. PERFORMANCE DATA ...................................................................................................................................... 47 7.1 ISO Data ............................................................................................................................................................. 48 7.2 Heating & Cooling Capacity Data ................................................................................................................. 49 8. CORRECTION FACTOR TABLE ...........................................................................................................57 9. FAN & MOTOR DATA .........................................................................................................................63 9.1 PSC Motor Data ............................................................................................................................................... 64 9.2 EC Motor Data .................................................................................................................................................. 65 10. SPECIFICATIONS ..............................................................................................................................67 11. START UP PROCEEDURE .................................................................................................................71 www.omega-heatpump.com i R1.4 OMEGA | HRP SERIES ii www.omega-heatpump.com R1.4 HRP SERIES | OMEGA www.omega-heatpump.com 1 R1.4 OMEGA | HRP SERIES 1. PRODUCT OVERVIEW The entire Omega high rise heat pump (HRP) product Customizable line is engineered to provide the quietest vertical stack- ing water-source heat pump in the industry, and thou- Our units can be customized to meet the specific re- sands of installed units have proven this in the field. quirements of any project. Some options include: varia- Properly applied and installed, all of Omega units easily ble height dimensions, choice of supply air discharge meet NC-36-37 within the suite. locations and sizes, ultra quiet return air panel and re- mote thermostat control. Elegant Phased Installation Dependable The equipment is shipped to the site in two stages to Our water-source heat pump systems provide user integrate seamlessly with the phases of construction, friendly and reliable year round heating and cooling to reduce on-site damage and to allows mechanical units the occupants. Simply set the desired temperature and to be installed indoors. the heat pump will maintain it. During the initial stages of construction, the outer casing Serviceability and plenum are installed. As construction progresses, they become part of the interior wall structure. The final Each HRP unit has its own compressor and fan which chassis is delivered for installation after the majority of are easily accessible through the return air panel. If re- construction is complete, and becomes fully integrated pairs are required, a spare chassis can be inserted into into the interior of the unit. the unit, allowing it to continuously operate while the damaged chassis is repaired offsite. Testing & Quality Energy Efficient To maintain the highest level of quality control, each unit is checked in our state-of-the-art test facility before be- Unlike fan coil systems, the HRP system can transfer ing shipped to the job site. Large scale production ac- energy from one zone to another. During moderate commodates short lead-times, and economies of scale weather, the sunny side of a building may require cool- enable low costs without sacrificing quality. ing while the shady side requires heating. When approxi- mately one third of the units operate in cooling mode, State-of-the-art manufacturing and rigorous quality con- external heat is not required. trol systems guarantees every HRP is manufactured with the highest degree of reliability and consistency. In the chassis production line, a 6-station quality control (QC) system ensures that every stage of chassis production is tested and re-tested, and that each unit is certified by AHRI (Air-Conditioning, Heating, & Refrigeration Insti- tute). Lean Six Sigma procedures result in efficient and cost effective manufacturing that drives a high quality— and highly competitive—product. 2 www.omega-heatpump.com R1.4 HRP SERIES | OMEGA 1.1 Key Features Energy Efficient Design Service High efficiency compressors and blower motors Slide-out chassis removal and replacement Optimum circuited air to refrigerant coils Allows spare chassis to be kept in stock for instant Custom-sized thermal expansion systems replacement Low pressure drop water coaxial coils Controls components in one location Coefficient of Performance (COP)/Energy Efficiency Plug-in controls Ratio (EER) meets or exceeds ASHRAE 90.1 Capacitor in front of unit Service handles on chassis Space Considerations Low clog coaxial coil design
Recommended publications
  • Douglas Missile & Space Systems Division
    ·, THE THOR HISTORY. MAY 1963 DOUGLAS REPORT SM-41860 APPROVED BY: W.H.. HOOPER CHIEF, THOR SYSTEMS ENGINEERING AEROSPACE SYSTEMS ENGINEERING DOUGLAS MISSILE & SPACE SYSTEMS DIVISION ABSTRACT This history is intended as a quick orientation source and as n ready-reference for review of the Thor and its sys­ tems. The report briefly states the development of Thor, sur'lli-:arizes and chronicles Thor missile and booster launch­ inGs, provides illustrations and descriptions of the vehicle systcn1s, relates their genealogy, explains sane of the per­ fon:iance capabilities of the Thor and Thor-based vehicles used, and focuses attention to the exploration of space by Douelas Aircraf't Company, Inc. (DAC). iii PREFACE The purpose of The Thor History is to survey the launch record of the Thor Weapon, Special Weapon, and Space Systems; give a systematic account of the major events; and review Thor's participation in the military and space programs of this nation. The period covered is from December 27, 1955, the date of the first contract award, through May, 1963. V �LE OF CONTENTS Page Contract'Award . • • • • • • • • • • • • • • • • • • • • • • • • • 1 Background • • • • • • • • • • • • • • • • • • • • • • • • • • • • l Basic Or�anization and Objectives • • • • • • • • • • • • • • • • 1 Basic Developmenta� Philosophy . • • • • • • • • • • • • • • • • • 2 Early Research and Development Launches • • • ·• • • • • • • • • • 4 Transition to ICBM with Space Capabilities--Multi-Stage Vehicles . 6 Initial Lunar and Space Probes ••••••• • • • • • • •
    [Show full text]
  • ESPA Ring Datasheet
    PAYLOAD ADAPTERS | ESPA ESPA THE EVOLVED SECONDARY PAYLOAD ADAPTER ESPA mounts to the standard NSSL (formerly EELV) interface bolt pattern (Atlas V, Falcon 9, Delta IV, OmegA, Vulcan, Courtesy of Lockheed Martin New Glenn) and is a drop-in component in the launch stack. Small payloads mount to ESPA ports featuring either a Ø15-inch bolt circle with 24 fasteners or a 4-point mount with pads at each corner of a 15-inch square; both of these interfaces have become small satellite standards. ESPA is qualified to carry 567 lbs (257 kg), and a Heavy interface Courtesy of NASA (with Ø5/16” fastener hardware) has been introduced with a capacity of 991 lbs (450 kg). All small satellite mass capabilities require the center of gravity (CG) to be within 20 inches (50.8 cm) of the ESPA port surface. Alternative configurations can be accommodated. ESPA GRANDE ESPA Grande is a more capable version of ESPA with Ø24-inch ports; the ring height is typically 42 inches. The Ø24-inch port has been qualified by test to Courtesy of ORBCOMM & Sierra Nevada Corp. carry small satellites up to 1543 lb (700 kg). ESPA ESPA IS ADAPTABLE TO UNIQUE MISSION REQUIREMENTS • The Air Force’s STP-1 mission delivered multiple small satellites on an Atlas V. • NASA’s Lunar Crater Observation and Sensing Satellite (LCROSS): ESPA was the spacecraft hub for the LCROSS shepherding satellite in 2009. • ORBCOMM Generation 2 (OG2) launched stacks of two and three ESPA Grandes on two different Falcon 9 missions and in total deployed 17 satellites.
    [Show full text]
  • Orbital Fueling Architectures Leveraging Commercial Launch Vehicles for More Affordable Human Exploration
    ORBITAL FUELING ARCHITECTURES LEVERAGING COMMERCIAL LAUNCH VEHICLES FOR MORE AFFORDABLE HUMAN EXPLORATION by DANIEL J TIFFIN Submitted in partial fulfillment of the requirements for the degree of: Master of Science Department of Mechanical and Aerospace Engineering CASE WESTERN RESERVE UNIVERSITY January, 2020 CASE WESTERN RESERVE UNIVERSITY SCHOOL OF GRADUATE STUDIES We hereby approve the thesis of DANIEL JOSEPH TIFFIN Candidate for the degree of Master of Science*. Committee Chair Paul Barnhart, PhD Committee Member Sunniva Collins, PhD Committee Member Yasuhiro Kamotani, PhD Date of Defense 21 November, 2019 *We also certify that written approval has been obtained for any proprietary material contained therein. 2 Table of Contents List of Tables................................................................................................................... 5 List of Figures ................................................................................................................. 6 List of Abbreviations ....................................................................................................... 8 1. Introduction and Background.................................................................................. 14 1.1 Human Exploration Campaigns ....................................................................... 21 1.1.1. Previous Mars Architectures ..................................................................... 21 1.1.2. Latest Mars Architecture .........................................................................
    [Show full text]
  • Space Coast Is Getting Busy: 6 New Rockets Coming to Cape Canaveral, KSC
    4/16/2019 Space Coast is getting busy: 6 new rockets coming to Cape Canaveral, KSC Space Coast is getting busy: 6 new rockets coming to Cape Canaveral, Kennedy Space Center Emre Kelly, Florida Today Published 4:04 p.m. ET April 11, 2019 | Updated 7:53 a.m. ET April 12, 2019 COLORADO SPRINGS, Colo. – If schedules hold, the Space Coast will live up to its name over the next two years as a half-dozen new rockets target launches from sites peppered across the Eastern Range. Company, government and military officials here at the 35th Space Symposium, an annual space conference, have reaffirmed their plans to launch rockets ranging from more traditional heavy-lift behemoths to smaller vehicles that take advantage of new manufacturing technologies. Even if some of these schedules slip, at least one thing is apparent to several spaceflight experts here: The Eastern Range is seeing an unprecedented growth in commercial space companies and efforts. Space Launch System: 2020 NASA's Space Launch System rocket launches from Kennedy Space Center's pad 39B in this rendering by the agency. (Photo: NASA) NASA's long-awaited SLS, a multibillion-dollar rocket announced in 2011, is slated to become the most powerful launch vehicle in history if it can meet a stringent late 2020 deadline. The 322-foot-tall rocket is expected to launch on its first flight – Exploration Mission 1 – from Kennedy Space Center with an uncrewed Orion capsule for a mission around the moon, which fits in with the agency's wider goal of putting humans on the surface by 2024.
    [Show full text]
  • Omega-3 Fatty Acids Fact Sheet for Consumers
    Omega-3 Fatty Acids Fact Sheet for Consumers What are omega-3 fatty acids and what do they do? Omega-3 fatty acids are found in foods, such as fish and flaxseed, and in dietary supplements, such as fish oil. The three main omega-3 fatty acids are alpha-linolenic acid (ALA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA). ALA is found mainly in plant oils such as flaxseed, soybean, and canola oils. DHA and EPA are found in fish and other seafood. ALA is an essential fatty acid, meaning that your body can’t make it, so you must get it from the foods and beverages you consume. Your body can convert some ALA into EPA and then to DHA, but only in very small amounts. Therefore, getting EPA and DHA from foods (and dietary supplements if you take them) is the only practical way to increase levels of these omega-3 fatty acids in your body. Omega-3s are important components of the membranes that surround each cell in your body. DHA levels are especially high in retina (eye), brain, and sperm cells. Omega-3s also provide calories to give your body energy and have many functions in your heart, blood vessels, lungs, immune system, and endocrine system (the network of hormone-producing glands). How much omega-3s do I need? Omega-3s are found in foods Experts have not established recommended amounts for omega-3 fatty acids, except such as fatty fish and plant oils. for ALA. Average daily recommended amounts for ALA are listed below in grams (g).
    [Show full text]
  • NFM® Load Bearing Solutions
    NFM® Load Bearing Solutions Product Catalog v.EN.004 1 Contents Introducing THOR 1 Full Spectrum Protection 3 Advanced Load Bearing Solutions 5 Design Philosophy Positioning the Load Pressure Distribution Load Stabilization Technology and Materials 7 NFM® Alpha – a unique laminate Tubes™ Slot Attachment Interface Comfort Padding Ventilation Channels THOR Load Bearing System 9 Adding Ballistic Protection to the THOR Load Bearing System A System of Systems Technology and Materials 11 Flame Retardancy (FR) Signature Management Water / Oil Repellent THOR Load Bearing System – Products 13 THOR Belt System 15 THOR Carriers 17 THOR Concealable Vests 21 THOR Pouches 23 THOR Bags 31 THOR – System Components 32 Introducing THOR Wielding his mighty hammer, THOR is the fiercest warrior of Nordic legend, famed for his supernatural strength and agile fighting abilities. 1 Full Spectrum Protection Full Spectrum Protection (FSP) is a personal load bearing and protection concept which enables the user to remain protected whilst adapting capacity, level of protection and appearance depending on the threat level and environmental conditions. FSP was developed by analyzing the tactical and operational requirements that armed forces and law enforcement agencies face. All the components of FSP; THOR load bearing, GARM combat clothing and SKJOLD body armor are designed to integrate seamlessly with each other. GARM® combat clothing GARM® is NFM®’s combat clothing is always to reduce weight but system, which incorporates also improve durability, protection a complete line of combat garments – and compressibility of every item. from underwear to outerwear. GARM® has also inspired NFM®’s fire All design aspects of the system retardancy (FR) standards, an industry have been carefully implemented first, on the best ways of wearing fire from end user feedback.
    [Show full text]
  • THINK LOGISTICS – SPACE LOGISTICS ! Florian Loire Strategy for Civil Launchers
    THINK LOGISTICS – SPACE LOGISTICS ! Florian Loire Strategy for civil launchers Space School - 25 June 2019 #spaceenablers 1 DISRUPTION IN THE SPACE MARKET COMPETITIVE LANDSCAPE THIS DOCUMENT AND ITS CONTENTS ARE PROPERTY OF ARIANEGROUP. IT SHALL NOT BE COMMUNICATED TO ANY THIRD PARTY WITHOUT THE OWNER’S WRITTEN CONSENT | ARIANEGROUP SAS – ALL RIGHTS RESERVED. SPACE LOGISTICS @ ESTACA - 25/06/2019 Existing Space Economy has real economic value to society Science & Meteorology …. Exploration Navigation/Positioning Earth Observation Telecommunications THIS DOCUMENT AND ITS CONTENTS ARE PROPERTY OF ARIANEGROUP. IT SHALL NOT BE COMMUNICATED TO ANY THIRD PARTY WITHOUT THE OWNER’S WRITTEN CONSENT | ARIANEGROUP SAS – ALL RIGHTS RESERVED. #space- enablers THE GOOD OLD DAYS: A FEW WELL SEGMENTED LAUNCH SERVICE MARKET SEGMENTS THIS DOCUMENT AND ITS CONTENTS ARE PROPERTY OF ARIANEGROUP. IT SHALL NOT BE COMMUNICATED TO ANY THIRD PARTY WITHOUT THE OWNER’S SPACE LOGISTICS @ ESTACA 07/12/2018 WRITTEN CONSENT | ARIANEGROUP SAS – ALL RIGHTS RESERVED. - ARIANE 5 THE EUROPEAN WORKHORSE WITH 104 LAUNCHES PERFORMED ARIANE 5 ES Fairing ARIANE 5 ECA Height: 17 m Launch weight: 760 t Ø 5.4 m Launch weight: 780 t Thrust: 1,340 t Thrust: 1,340 t Dual Launch System (SYLDA) Ø 4 m useful Last HM7B engine Still the Thrust: 6.5 t mission in benchmark 2018 Reignitable Aestus engine for GTO Thrust: 2.7 t missions 2 boosters Vulcain 2 engine Thrust: 136 t * All references to tons (t) are metric tons throughout THIS DOCUMENT AND ITS CONTENTS ARE PROPERTY OF ARIANEGROUP. IT SHALL NOT BE COMMUNICATED TO ANY THIRD PARTY WITHOUT THE OWNER’S WRITTEN CONSENT | ARIANEGROUP SASGMBH – ALL– ALL RIGHTS RIGHTS RESERVED.
    [Show full text]
  • 2020 Florida Space Day Handout
    2020 Florida Space Day is a milestone event that presents an opportunity to educate and bring awareness to Florida legislators on the significance of the aerospace industry and its impact on Florida’s economy. Florikan Scientific Instruments Scientific Lighting Solutions Zero Gravity Solutions BIOS Lighting Sarasota County Palm Beach County Brevard County Palm Beach County Brevard County The aerospace industry represents billions of dollars Has partnered with Supplies Kennedy Space Builds high-speed camera Has developed a micronutrient Is using NASA LED technology in annual economic impact and employs NASA multiple times to Center, as well as other space systems to detect and map formula, BAM-FX, that increases to create lighting systems for create a more robust and medical companies, with lightning strikes before the nutritional value and yield of unique applications, such as thousands of residents in the state’s 67 counties. polymer coating for its silicon diode sensors capable launches. The technology also crops. Nutrient-rich foods like maximizing plant photosynthesis controlled-release of tracking temperatures has applications in protecting these will be necessary for future and inducing wakefulness in fertilizer and to develop hundreds of degrees wind farms and investigating long-term space missions. humans by outputting only fertilizer to meet the below zero. insurance claims. certain wavelengths of light. needs of plants growing in space. 2020 SPACE DAY PARTNERS ECONOMIC DEVELOPMENT COMMISSION FLORIDA’S SPACE COAST FloridaSpaceDay.com » #FLSpaceDay The Florida Space Day is an organized and united effort to communicate to the Governor, Lt. Governor and Legislators an appreciation of their support to the space industry, educate them on the state wide economic impact of space and to develop and advocate for key initiatives that will enhance the competitiveness and viability of the state of Florida in the space sector.
    [Show full text]
  • Human Exploration and Operations Committee Report
    Human Exploration and Operations Committee NASA Advisory Council May 31, 2019 N. Wayne Hale, Jr. 1 HEO Committee Activities since May 2019 • Reading material: Origins of 21st Century Space Travel • Briefings on alternative architectures • Fact Finding tour and meetings at MAF and SSC 2 HEO Committee Briefings • Janet Karika – Chief of Staff, HQ - status of NSpPC Actions • Ken Bowersox – Acting AA HEOMD, HQ – HEO update • Sam Scimemi – ISS Deputy AA, HQ – ISS Update • Bill Wrobel – SLS Green Run Manager, HQ – Green Run background and plans • Tom Whitmeyer – Exploration Systems, Deputy AA, HQ – ESD update • Marshall Smith – Advanced Exploration Systems, Deputy AA, HQ – AES Update • Doug Comstock – LEO Commercialization Manager, HQ – Commercialization update • Mike Kincaid – STEM Engagement and Outreach AA, HQ – STEM program updates • Program Managers • John Honeycutt – SLS Program Manager, MSFC • Mark Kirasich – Orion Program Manager, JSC • Kathy Leuders – Commercial Crew Program, KSC • Amanda Mitsckevitch – Launch Services Program, KSC • Mark Rodgers/Steven Edwards – Advanced Analysis Group, MSFC 3 NAC HEO Chairman Activities • Represented NAC at ASAP Meeting in September at JSC • Individual meetings with leadership: • Lisa Watson-Morgan – Human Lander Systems Program Manager, MSFC • Dan Hartman – Gateway Program Manager, JSC • Kirk Shireman – ISS Program Manager, JSC • Kathy Lueders – Commercial Crew Program Manager, KSC • Center Directors: • Mark Geyer – JSC • Jody Singer – MSFC • Bob Cabana – KSC • Rick Gilbrech - SSC • Others 4 Evolution
    [Show full text]
  • AEHF-6 Launch Marks 500Th Flight of Aerojet Rocketdyne's RL10 Engine
    AEHF-6 Launch Marks 500th Flight of Aerojet Rocketdyne’s RL10 Engine March 27, 2020 CAPE CANAVERAL, Fla., March 26, 2020 (GLOBE NEWSWIRE) -- The successful March 26 launch of the U.S. Space Force’s sixth and final Advanced Extremely High Frequency (AEHF) military communications satellite aboard a United Launch Alliance (ULA) Atlas V rocket marked the 500th flight of Aerojet Rocketdyne’s RL10 upper-stage engine. The RL10, which powers the ULA Atlas V Centaur upper stage, is one of several Aerojet Rocketdyne propulsion products supporting the mission. Aerojet Rocketdyne propulsion can be found on both the rocket and the AEHF-6 satellite. Built by Lockheed Martin, the AEHF satellites provide secure, jam-proof communications, including nuclear command and control, to U.S. and allied forces. “This launch marks an important milestone for Aerojet Rocketdyne and for the country,” said Eileen Drake, Aerojet Rocketdyne’s CEO and president. “The RL10 has supported a majority of the nation’s most important national security and scientific missions, including all of the AEHF satellites which provide communication links that are critical to our warfighters.” The Atlas V in the 551 configuration is the most powerful vehicle in the Atlas V family, featuring five Aerojet Rocketdyne AJ-60A solid rocket strap-on motors, each generating 348,500 pounds of thrust. Designed specifically to provide extra lifting power to the Atlas V, the AJ-60A is the world’s largest monolithic solid rocket motor ever flown. The AEHF-6 satellite, meanwhile, is outfitted with three different types of Aerojet Rocketdyne thrusters for attitude control, orbital station keeping and maneuvering.
    [Show full text]
  • Small Launchers in a Pandemic World - 2021 Edition of the Annual Industry Survey
    SSC21- IV-07 Small Launchers in a Pandemic World - 2021 Edition of the Annual Industry Survey Carlos Niederstrasser Northrop Grumman Corporation 45101 Warp Drive, Dulles, VA 20166 USA; +1.703.406.5504 [email protected] ABSTRACT Even with the challenges posed by the world-wide COVID pandemic, small vehicle "Launch Fever" has not abated. In 2015 we first presented this survey at the AIAA/USU Conference on Small Satellites1, and we identified twenty small launch vehicles under development. By mid-2021 ten vehicles in this class were operational, 48 were identified under development, and a staggering 43 more were potential new entrants. Some are spurred by renewed government investment in space, such as what we see in the U.K. Others are new commercial entries from unexpected markets such as China. All are inspired by the success of SpaceX and the desire to capitalize on the perceived demand caused by the mega constellations. In this paper we present an overview of the small launch vehicles under development today. When available, we compare their capabilities, stated mission goals, cost and funding sources, and their publicized testing progress. We also review the growing number of entrants that have dropped out since we first started this report. Despite the COVID-19 pandemic, one system became operational in the past 12 months and two or three more systems hope to achieve their first successful launch in 2021. There is evidence that this could be the year when the small launch market finally becomes saturated; however, expectations continue to be high and many new entrants hope that there is room for more providers.
    [Show full text]
  • Omega-3 Supplements May Interact with Drugs That Affect Blood Clotting
    U.S. Department of Health & Human Services National Institutes of Health Omega-3 Supplements © Zoonar/Thinkstock Omega-3 fatty acids (omega-3s) are a group of polyunsaturated fatty acids that are important for a number of functions in the body. Some types of omega-3s are found in foods such as fatty fish and shellfish. Another type is found in some vegetable oils. Omega-3s are also available as dietary supplements. This fact sheet provides basic information about omega-3s—with a focus on dietary supplements, summarizes scientific research on effectiveness and safety, and suggests sources for additional information. Key Facts — There has been a substantial amount of research on supplements of omega-3s, particularly the types of omega-3s found in seafood and fish oil, and heart disease. The findings of individual studies have been inconsistent. In 2012, two combined analyses of the results of these studies did not find convincing evidence that these omega-3s protect against heart disease. — There is some evidence that omega-3s of the types found in seafood and fish oil may be modestly helpful in relieving symptoms in rheumatoid arthritis. For most other conditions for which omega-3s have been studied, definitive conclusions cannot yet be reached, or studies have not shown omega-3s to be beneficial. — Omega-3 supplements may interact with drugs that affect blood clotting. — It is uncertain whether people with fish or shellfish allergies can safely consume fish oil supplements. — Fish liver oils (which are not the same as fish oils) contain vitamins A and D as well as omega-3 fatty acids; these vitamins can be toxic in high doses.
    [Show full text]