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Thesis a Modeling Tool for Household Biogas Burner
THESIS A MODELING TOOL FOR HOUSEHOLD BIOGAS BURNER FLAME PORT DESIGN Submitted by Thomas J. Decker Department of Mechanical Engineering In partial fulfillment of the requirements For the Degree of Master of Science Colorado State University Fort Collins, Colorado Summer 2017 Master’s Committee: Advisor: Thomas Bradley Jason Prapas Sybil Sharvelle Copyright by Thomas J Decker 2017 All Rights Reserved ABSTRACT A MODELING TOOL FOR HOUSEHOLD BIOGAS BURNER FLAME PORT DESIGN Anaerobic digestion is a well-known and potentially beneficial process for rural communities in emerging markets, providing the opportunity to generate usable gaseous fuel from agricultural waste. With recent developments in low-cost digestion technology, communities across the world are gaining affordable access to the benefits of anaerobic digestion derived biogas. For example, biogas can displace conventional cooking fuels such as biomass (wood, charcoal, dung) and Liquefied Petroleum Gas (LPG), effectively reducing harmful emissions and fuel cost respectively. To support the ongoing scaling effort of biogas in rural communities, this study has developed and tested a design tool aimed at optimizing flame port geometry for household biogas- fired burners. The tool consists of a multi-component simulation that incorporates three- dimensional CAD designs with simulated chemical kinetics and computational fluid dynamics. An array of circular and rectangular port designs was developed for a widely available biogas stove (called the Lotus) as part of this study. These port designs were created through guidance from previous studies found in the literature. The three highest performing designs identified by the tool were manufactured and tested experimentally to validate tool output and to compare against the original port geometry. -
Biogas Stove Design: a Short Course
Biogas Stove Design A short course Dr David Fulford Kingdom Bioenergy Ltd Originally written August 1996 Used in MSc Course on “Renewable Energy and the Environment” at the University of Reading, UK for an Advanced Biomass Module. Design Equations for a Gas Burner The force which drives the gas and air into the burner is the pressure of gas in the pipeline. The key equation that relates gas pressure to flow is Bernoulli’s theorem (assuming incompressible flow): p v2 + +z = constant ρ 2g where: p is the gas pressure (N m –2), ρ is the gas density (kg m –3), v is the gas velocity (m s –1), g is the acceleration due to gravity (9.81 m s –2) and z is head (m). For a gas, head ( z) can be ignored. Bernoulli’s theorem essentially states that for an ideal gas flow, the potential energy due to the pressure, plus the kinetic energy due to the velocity of the flow is constant In practice, with gas flowing through a pipe, Bernoulli’s theorem must be modified. An extra term must be added to allow for energy loss due to friction in the pipe: p v2 + −f ()losses = constant . ρ 2g Using compressible flow theory, flow though a nozzle of area A is: γ p γ ()γ − γ m = C ρ A 2 0 r2 (1− r 1 ) & d 0 γ − ρ 1 0 ρ where p0 and 0 are the pressure and density of the gas upstream of the = nozzle and r p1 p0 , where p1 is the pressure downstream of the nozzle. -
Supplement to the London Gazette, Ist January 1967
30 SUPPLEMENT TO THE LONDON GAZETTE, IST JANUARY 1967 Morral GREENALL, Land Service Assistant Miss Lexie Gordon LESENGER, Manageress, Grade II, Agricultural Land Service, Ministry N.A.A.F.I. Cafeteria, Camp Voluceau, of Agriculture, Fisheries and Food. S.H.A.P.E. Henry HANCOCK, Chief Observer, Post Noel Vivian LEWENDON, Distribution Fore- 20/L.2, Royal Observer Corps. man, Nottingham District, East Midlands Gas John Charles HANKINSON, Permanent Board. Chargeman of Shipwrights, Ministry of De- Henry George LINDER, Company First Aid fence (Royal Navy). Officer, Civil Defence Corps, Norwich. Cendwen, Mrs. HARDIE, Centre Organiser, John LLAMBIAS, Permit Office Attendant, Pontypridd, Women's Royal Voluntary H.M. Dockyard, Gibraltar. Service. Miss Emily LONGMAN, Housemother, "Sun- Harold HARDY, Civilian Instructor, No. 114 crest" Children's Home, Birmingham County (Ruislip) Squadron, Air Training Corps. Borough. Miss Ivy Hilda HOPKINS-HARRINGTON, Sidney Robert LUNNISS, Locomotive Driver, Senior Chief Supervisor (Telephones), Bir- King's Cross, British Railways Board. mingham Trunk and Toll Telephone Exchange, Colin McGAVIN, Divisional Commandant, City General Post Office. of Glasgow Special Constabulary. Miss Hilda HARRIS, Honorary Collector, Street • George McKENNA, Shift Welder and Deputy Savings Group, Scartho, Lincolnshire. Chargehand, Distillers Co. Ltd. William HARRISON, Gateman, Linacre Works, John Ronald MACQUAY, Switchgear Foreman, Mersey Group, North Western Gas Board. Birmingham Area, Midlands Electricity Board. Harry HART, Inspector (Postal), Head Post Reginald Ernest MARSHALL, Supervising Office, Tamworth. Engineer III, Duke of York School, Dover, Enoch George HARTLEY, Employee, Hull Ministry of Public Building and Works. No. 1 Factory, Remploy Ltd. Stanley Vincente George MARTI, Civilian In- Henry Edward HARVEY, Office Keeper, Ex- structor, No. -
A Wood-Gas Stove for Developing Countries T
A WOOD-GAS STOVE FOR DEVELOPING COUNTRIES T. B. Reed and Ronal Larson The Biomass Energy Foundation, Golden, CO., USA ABSTRACT Through the millennia wood stoves for cooking have been notoriously inefficient and slow. Electricity, gas or liquid fuels are preferred for cooking - when they can be obtained. In the last few decades a number of improvements have been made in woodstoves, but still the improved wood stoves are difficult to control and manufacture and are often not accepted by the cook. Gasification of wood (or other biomass) offers the possibility of cleaner, better controlled gas cooking for developing countries. In this paper we describe a wood-gas stove based on a new, simplified wood gasifier. It offers the advantages of “cooking with gas” while using a wide variety of biomass fuels. Gas for the stove is generated using the “inverted downdraft gasifier” principle. In one mode of operation it also produces 20-25% charcoal (dry basis). The stove operates using natural convection only. It achieves clean “blue flame” combustion using an “air wick” that optimizes draft and stabilizes the flame position. The emissions from the close coupled gasifier-burner are quite low and the stove can be operated indoors. Keywords: inverted downdraft gasifier, domestic cooking stove, natural draft *Presented at the “Developments in Thermochemical Biomass Conversion” Conference, Banff, Canada, 20-24 May, 1996. 1 A WOOD-GAS STOVE FOR DEVELOPING COUNTRIES T. B. Reed and Ronal Larson The Biomass Energy Foundation, Golden, CO., USA 1. Introduction - 1.1. The Problem Since the beginning of civilization wood and biomass have been used for cooking. -
Orme) Wilberforce (Albert) Raymond Blackburn (Alexander Bell
Copyrights sought (Albert) Basil (Orme) Wilberforce (Albert) Raymond Blackburn (Alexander Bell) Filson Young (Alexander) Forbes Hendry (Alexander) Frederick Whyte (Alfred Hubert) Roy Fedden (Alfred) Alistair Cooke (Alfred) Guy Garrod (Alfred) James Hawkey (Archibald) Berkeley Milne (Archibald) David Stirling (Archibald) Havergal Downes-Shaw (Arthur) Berriedale Keith (Arthur) Beverley Baxter (Arthur) Cecil Tyrrell Beck (Arthur) Clive Morrison-Bell (Arthur) Hugh (Elsdale) Molson (Arthur) Mervyn Stockwood (Arthur) Paul Boissier, Harrow Heraldry Committee & Harrow School (Arthur) Trevor Dawson (Arwyn) Lynn Ungoed-Thomas (Basil Arthur) John Peto (Basil) Kingsley Martin (Basil) Kingsley Martin (Basil) Kingsley Martin & New Statesman (Borlasse Elward) Wyndham Childs (Cecil Frederick) Nevil Macready (Cecil George) Graham Hayman (Charles Edward) Howard Vincent (Charles Henry) Collins Baker (Charles) Alexander Harris (Charles) Cyril Clarke (Charles) Edgar Wood (Charles) Edward Troup (Charles) Frederick (Howard) Gough (Charles) Michael Duff (Charles) Philip Fothergill (Charles) Philip Fothergill, Liberal National Organisation, N-E Warwickshire Liberal Association & Rt Hon Charles Albert McCurdy (Charles) Vernon (Oldfield) Bartlett (Charles) Vernon (Oldfield) Bartlett & World Review of Reviews (Claude) Nigel (Byam) Davies (Claude) Nigel (Byam) Davies (Colin) Mark Patrick (Crwfurd) Wilfrid Griffin Eady (Cyril) Berkeley Ormerod (Cyril) Desmond Keeling (Cyril) George Toogood (Cyril) Kenneth Bird (David) Euan Wallace (Davies) Evan Bedford (Denis Duncan) -
Combustion of Low-Calorific Waste Biomass Syngas
Flow Turbulence Combust (2013) 91:749–772 DOI 10.1007/s10494-013-9473-9 Combustion of Low-Calorific Waste Biomass Syngas Kamil Kwiatkowski · Marek Dudynski´ · Konrad Bajer Received: 7 March 2012 / Accepted: 31 May 2013 / Published online: 19 June 2013 © The Author(s) 2013. This article is published with open access at Springerlink.com Abstract The industrial combustion chamber designed for burning low-calorific syngas from gasification of waste biomass is presented. For two different gases derived from gasification of waste wood chips and turkey feathers the non-premixed turbulent combustion in the chamber is simulated. It follows from our computations that for stable process the initial temperature of these fuels must be at least 800 K, with comparable influx of air and fuel. The numerical simulations reveal existence of the characteristic frequency of the process which is later observed in high-speed cam- era recordings from the industrial gasification plant where the combustion chamber operates. The analysis of NO formation and emission shows a difference between wood-derived syngas combustion, where thermal path is prominent, and feathers- derived fuel. In the latter case thermal, prompt and N2O paths of nitric oxides formation are marginal and the dominant source of NO is fuel-bound nitrogen. Keywords Biomass · Waste · Gasification · Syngas · Turbulent combustion K. Kwiatkowski (B) · M. Dudynski´ · K. Bajer Faculty of Physics, University of Warsaw, Pasteura 7, 02-093 Warsaw, Poland e-mail: [email protected] K. Kwiatkowski · K. Bajer Interdisciplinary Centre for Mathematical and Computational Modelling, University of Warsaw, Pawinskiego´ 5a, 02-106 Warsaw, Poland M. Dudynski´ Modern Technologies and Filtration Sp. -
NP & P, Vol 2, No 2
RANDOM NORTHAMPTONSHIRE' REMINISCENCES THE Mulsos held the manor of Finedon from 'the fifteenth century till the reign of Charles II, when it descended to the two daughters of TaIifield Mulso as co-heiresses. They married two brothers, Gilbert and John Dolben, sons of the Archbishop of York, who was himself the son of the Rev. William Dolben, Rector of Stanwick. John sold his moiety of the manor to Gilbert, who was created a baronet in 1704. The baronetcy descended from father to son for 'four generations. 1 My great-grandmother was the eldest daughter of the last baronet and married the Rev. Samuel Woodfield Paul in 1806. The Vicar of Finedon, Sir Charles Cave, was an absentee, so my great-grandfather bought the family living and he and his bride were able to settle down at once in the beautiful old Vicarage-just across the lawn from the Hall-and there , they and my grandparents after them lived till 1911, when my grandfather, the Rev. George WO'odfield Paul, who was Vicar of Finedon for sixty-three years, died at the age of ninety-one. My father, l;Ierbert Woodfield Paul, had originally been the heir to the Hall; but, after he had become a Liberal at Oxford undet the influence of Asquith, Mrs. Mackworth-Dolben1 disinherited him as a matter of principle. This never affected their relations and he always remained devoted to her-as I was when I was a little boy. I was christened at Finedon by my grandfather in the church in which he had christened my father and had himself been christened by his own; and I always looked upon Finedon as my home. -
CAST IRON STOVE and DIRECT-VENT (FREESTANDING FIREPLACE HEATER) BURNER SYSTEM OWNER’S OPERATION and INSTALLATION MANUAL for More Information, Visit
CAST IRON STOVE AND DIRECT-VENT (FREESTANDING FIREPLACE HEATER) BURNER SYSTEM OWNER’S OPERATION AND INSTALLATION MANUAL For more information, visit www.desatech.com SCIVFC/PSCIVFC VCIS/PVCIS VH series Stove SERIES STOVE Series Stove "VICTOR HEARTH™" "AMITY™" "OXFORD™" NATURAL GAS BURNER SYSTEM MODEL SDVBND PROPANE/LP GAS BURNER SYSTEM MODEL SDVBPD REMOTE READY IMPORTANT: This direct-vent burner system must be installed into approved cast iron stove bodies, models SCIVFC/PSCIVFC/VCIS/PVCIS/VH series ONLY. WARNING: If the information in this manual is not followed WARNING: Improper instal- exactly, a fire or explosion may result causing property lation, adjustment, alteration, damage, personal injury, or loss of life. service, or maintenance can cause injury or property dam- FOR YOUR SAFETY age. Refer to this manual for Do not store or use gasoline or other flammable vapors and correct installation and op- liquids in the vicinity of this or any other appliance. erational procedures. For as- sistance or additional infor- mation consult a qualified in- FOR YOUR SAFETY staller, service agency, or the WHAT TO DO IF YOU SMELL GAS gas supplier. • Do not try to light any appliance. • Do not touch any electrical switch Installation and service must • Do not use any phone in your building. be performed by a qualified • Immediately call your gas supplier from a neighbor’s installer, service agency, or phone. Follow the gas supplier’s instructions. the gas supplier. • If you cannot reach your gas supplier, call the fire department. This appliance may be installed in an aftermarket*, permanently located, manufactured (mo- bile) home, where not prohibited by state or local codes. -
G.B. PERFIN SOCIETY BULLETIN No
G.B. PERFIN SOCIETY BULLETIN No. 380 – October 2012 Illustrated envelope used by the Royal Mail Steam Packet Co bearing ½d Green Downey with perfin R3550.03 – RM/SP. The die is known used between 1922 and 1936 © The G.B. Perfin Society www.angelfire.com/pr/perfinsoc/ SOCIETY NEWS SECRETARY/TREASURER A big thank you to all of you who have paid your subscriptions on time, it is a great help to me and reduces my administration, and the notes of support are greatly appreciated! A few of you in the UK paid subs of £11 by cheque instead of £10 and as I have no contact telephone/email I have put the £1 to credit for the future. Apologies to those that received opened empty envelopes instead of the August Bulletin & Auction, I still cannot understand why so many were affected as it has rarely ever happened before. Subscriptions Due If you have yet to pay your subscription due on 1st September 2012 then please do so without delay. I will only remind those members on email or who have given me a telephone number due to high postage costs. New Collectors Website Non-member Miles Newey has contacted the Society to highlight a new blog that he has started which may be of interest to some of our members. "I now have a new website up and running called www.stampblog.co.uk . The purpose of this site is to encourage the collecting of stamps, whilst being on hand to provide support by way of a forum. -
THE SOUTHERN ELECTRICITY BOARD AREA Regional and Local Electricity Systems in Britain
Dr. G.T. Bloomfield Professor Emeritus, University of Guelph THE SOUTHERN ELECTRICITY BOARD AREA Regional and Local Electricity Systems in Britain 1 Contents Introduction .................................................................................................................................................. 2 The Southern Electricity Board Area ............................................................................................................. 2 Constituents of the Southern Electricity Board Area .................................................................................... 3 Development of Electricity Supply Areas ...................................................................................................... 3 I Local Initiatives.................................................................................................................................. 6 II State Intervention ........................................................................................................................... 11 III Nationalisation ................................................................................................................................ 26 Summary ..................................................................................................................................................... 31 Note on Sources .......................................................................................................................................... 32 SOUTHAMPTON POWER STATION Opened in -
A History of Tar Distillation at Crew's Hole, Bristol
1 SCI LECTURE PAPERS SERIES A HISTORY OF TAR DISTILLATION AT CREW’S HOLE, BRISTOL Raymond Holland 10 Meadow Mead, Frampton Cotterell, Bristol BS36 2BQ, UK © 2002 Society of Chemical Industry. All rights reserved ISSN 1353-114X LPS 123/2002 Key words coal tar, industrial history, distillation A presentation to The South Western Gas Historical Society, 14 November 2001. At a Joint meeting with The South Western Section of The Institution of Gas Engineers & Managers and The Gas Energy Association. A submission for the Sugg Heritage Award 2002 Raymond Holland is an active member of the Society of Chemical Industry (SCI) and is a Past Chairman of Council. He is a presenter for the Chemical Industries Association (CIA) ‘Speak Out! and Listen’ talks programme and was short listed for the Retired Speaker of the Year Award 2001. He is a member of the South Western Gas Historical Society and a graduate of Manchester University. He was employed at the Crew’s Hole Tar Works for twenty years, as Chief Chemist, Bristol and West Tar Distillers Ltd and then as Production Manager, British Steel Corporation (Chemicals) Ltd. He is interested in the history of Bristol's chemical industry and is a lecturer and author on the subject. Foreword It may come as a surprise to some of the younger members of the Gas Industry to learn that the former South Western Gas Board was the sole owner (100%) of Bristol & West Tar Distillers Ltd for eight years up to 1970 and the advent of Natural Gas. Indeed, the Gas Board, under the Chairmanship of Mr CH Chester (Past President of the Institution of Gas Engineers) and Deputy Chairmanship of Mr J Carr, had owned twenty-five percent (25%) of Bristol & West Tar Distillers Ltd from 1952 – only five years after the Nationalisation of the Gas Industry. -
Micro-Gasification: Cooking with Gas from Dry Biomass
Micro-gasification: cooking with gas from dry biomass Published by: Micro-gasification: cooking with gas from dry biomass An introduction to concepts and applications of wood-gas burning technologies for cooking 2nd revised edition IV Photo 0.1 Typical fl ame pattern in a wood-gas burner, in this case a simple tin-can CONTENTS V Contents Figures & Tables........................................................................................................................................ VI Acknowledgements .............................................................................................................................VIII Abbreviations .............................................................................................................................................. X Executive summary ...........................................................................................................................XIII 1.0 Introduction ......................................................................................................................................1 1.1 Moving away from solid biomass? .................................................................................................. 2 1.2 Developing cleaner cookstoves for solid biomass? ................................................................... 5 1.3 Solid biomass fuels can be used cleanly in gasifier cookstoves! ...................................... 6 1.4 Challenges go beyond just stoves and fuels ...............................................................................