Biogas Production Measurement Guide
48 Questions
1 Views

Biogas Production Measurement Guide

Created by
@SelfSufficiencyMetaphor3049

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is one potential benefit of standardizing biogas plant sizes?

  • It makes biogas less popular.
  • It increases the number of plant types.
  • It reduces the need for data collectors.
  • It simplifies the collection of capacity data. (correct)

    • The capacity of biogas plants that stop working in a year should be added to the new plants' capacity.

    False

    What type of surveys can provide useful data for biogas survey development?

    Household or business energy surveys, population and housing censuses, etc.

    Biogas plants' capacity can be updated using more _____ information.

    <p>detailed</p> Signup and view all the answers

    Match the following biogas surveying concepts with their descriptions:

    <p>Capacity data = Measures the potential output of biogas plants Energy surveys = Assesses types of energy used in households Administrative data = Official data that can support biogas capacity assessments Sampling strategy = Systematic approach to select survey participants</p> Signup and view all the answers

    What crucial information should energy statisticians include in national surveys regarding biogas?

    <p>Types of energy used for cooking.</p> Signup and view all the answers

    Most biogas plants have been built within the last decade in many countries.

    <p>True</p> Signup and view all the answers

    What adjustment may not be necessary in most places when calculating net plant capacities?

    <p>Subtracting the capacity of plants that stopped working.</p> Signup and view all the answers

    What is one reason for collecting data about biogas plants' sizes in a country?

    <p>To analyze the standardization and common specifications of biogas plants</p> Signup and view all the answers

    The Deenbandhu biogas plants in India can produce more than 6 m3 of gas daily.

    <p>False</p> Signup and view all the answers

    How many different sizes of biogas plants are built under the National Domestic Biogas and Manure Program in Bangladesh?

    <p>twelve</p> Signup and view all the answers

    Biogas plants designed to process _____ waste can produce significant amounts of biogas.

    <p>cattle or poultry</p> Signup and view all the answers

    Match the biogas plant design to its expected daily gas production levels:

    <p>Deenbandhu biogas plants = 2 m3, 3 m3, 4 m3, 6 m3 NDBMP biogas plants = 1.2 m3/day, 1.6 m3/day, 2.0 m3/day, 2.4 m3/day, 3.2 m3/day, 4.8 m3/day</p> Signup and view all the answers

    What is suggested for biogas plant owners regarding their operational knowledge?

    <p>They should know the expected daily gas production of their plant</p> Signup and view all the answers

    It is recommended that all biogas plants should be built to the same exact specifications.

    <p>False</p> Signup and view all the answers

    Which type of waste is considered a high-value input that may increase biogas production?

    <p>Cereals/grains</p> Signup and view all the answers

    What is the purpose of converting daily gas production statistics during data processing?

    <p>To estimate total plant volumes</p> Signup and view all the answers

    Water added to the digester does not need to be recorded as part of the waste inputs.

    <p>True</p> Signup and view all the answers

    What is measured or estimated to calculate biogas production?

    <p>Digester volume</p> Signup and view all the answers

    The weight of waste produced by different animals can be used in the __________.

    <p>calculations</p> Signup and view all the answers

    Match the type of waste with its typical classification:

    <p>Fruit waste = Organic waste Cereals/grains = High value input Mixed food waste = Unspecified waste Grass = Animal waste</p> Signup and view all the answers

    What should the second question in the questionnaire focus on?

    <p>Weight of materials added to the digester</p> Signup and view all the answers

    Hens produce a significant amount of waste that can be ignored in calculations.

    <p>False</p> Signup and view all the answers

    What types of materials are excluded when feeding the digester?

    <p>Water</p> Signup and view all the answers

    What is the primary purpose of the capacity building programme at IRENA?

    <p>To assist countries in reporting biogas data in a comparable format</p> Signup and view all the answers

    Biogas data is typically reported in kilojoules (kJ).

    <p>False</p> Signup and view all the answers

    Name two ways to estimate or measure biogas production.

    <p>Estimates based on digester size and direct measurement of gas production.</p> Signup and view all the answers

    As biogas is produced, slurry is pushed out from the digester through the outlet pipe into a __________.

    <p>displacement tank</p> Signup and view all the answers

    Match the following factors with their impact on biogas production:

    <p>Digester size = Affects volume of biogas produced Temperature = Influences digestion process Feedstock type = Determines biogas quality Retention time = Affects biogas production rate</p> Signup and view all the answers

    Which of the following is NOT mentioned as a parameter affecting biogas production?

    <p>Humidity levels</p> Signup and view all the answers

    The guidance provided by IRENA includes conversion factors to convert cubic metres to megajoules (MJ).

    <p>True</p> Signup and view all the answers

    What are two socio-economic impacts of biogas use that can be monitored?

    <p>Emissions reductions and health benefits.</p> Signup and view all the answers

    At what temperature range (°C) does biogas production yield the highest value with a retention time of 6-10 days?

    <p>25-27</p> Signup and view all the answers

    Biogas production yields decrease as the retention time increases.

    <p>True</p> Signup and view all the answers

    What is the yield factor for biogas production at a temperature of 28-30 °C with a feedstock retention time of 21-25 days?

    <p>9.33</p> Signup and view all the answers

    The yield factor for biogas production at 36-40 °C and a feedstock retention time of 6-10 days is _____ .

    <p>2.91</p> Signup and view all the answers

    Match the retention time with the corresponding yield factor at 19-21 °C:

    <p>6-10 days = 7.98 21-25 days = 5.22 31-35 days = 4.25 46-50 days = 3.32</p> Signup and view all the answers

    Which temperature range gives a yield factor of 4.49 for a retention time of 21-25 days?

    <p>25-27</p> Signup and view all the answers

    The yield factors for biogas production are constant across different temperature ranges.

    <p>False</p> Signup and view all the answers

    Identify the yield factor for a retention time of 46-50 days at 31-33 °C.

    <p>6.21</p> Signup and view all the answers

    What was the average saving of fuelwood in households after switching to biogas in Bangladesh?

    <p>249 kg/month</p> Signup and view all the answers

    Households with biogas plants use 1,100 kg/year more fuelwood than those without biogas plants.

    <p>False</p> Signup and view all the answers

    How many litres of LPG produce the same energy content as 1 kg of fuelwood in adjusted measurements?

    <p>1.05</p> Signup and view all the answers

    Households that are connected to biogas plants can save ______ (amount) of fuelwood per month.

    <p>249 kg</p> Signup and view all the answers

    Match the types of fuels to their corresponding adjusted volume of biogas with the same energy content:

    <p>1 litre kerosene = 1.60 m3 1 kg fuelwood = 0.25 m3 1 kg charcoal = 0.65 m3 1 litre LPG = 1.05 m3</p> Signup and view all the answers

    Which of the following is NOT considered a disadvantage of measuring fuel consumption in households?

    <p>Households with biogas plants saving too much fuel</p> Signup and view all the answers

    Fuel consumption comparisons should be adjusted for household size and location.

    <p>True</p> Signup and view all the answers

    What is the estimated annual fuelwood use in households with biogas plants?

    <p>1,100 kg/year less</p> Signup and view all the answers

    Study Notes

    Measuring Small-Scale Biogas Capacity and Production

    • IRENA (International Renewable Energy Agency) report on measuring small-scale biogas capacity and production
    • Report provides guidance for energy statisticians
    • Focuses on continuous process biogas plants (feedstocks added and biogas removed daily)
    • Methods can be adapted for large-scale plants

    1. Introduction

    • Growing interest in small-scale biogas technologies in Africa, Asia, and Latin America
    • Socio-economic and environmental benefits: reduced firewood/kerosene use, lower emissions, waste treatment
    • Need for accurate monitoring and measurement of biogas capacity and production

    Key Requirements for Digester Operation

    • Airtight environment (no oxygen)
    • Moderate temperature (20-45°C)
    • No light
    • Small feedstock particles (minimal lignin)
    • Starter bacteria (for some feedstocks)

    2. Main Parameters Affecting Biogas Production

    • Digester technologies (fixed dome, floating drum, balloon/bag)
    • Plant capacity (volume or expected daily production)
    • Feedstock type and volume
    • Feedstock retention time
    • Temperature

    3. Plant Capacity

    • Administrative data (if available): biogas project records, number of plants, types, and sizes
    • Survey of standardized plant types: if plants are standardized in design and size, measure plant diameter and use predetermined calculations
    • Survey of biogas plant dimensions: Measure dimensions (diameter, height, length) to calculate plant volume and use appropriate formulas

    4. Biogas Production and Consumption

    • Plant capacity: to estimate daily production by multiplying plant capacity by a daily production factor
    • Appliance use: measure biogas consumption of appliances, calculate average daily consumption and convert into a yearly estimate
    • Feedstock use: determine the types and amounts of waste, the water content and calculate daily biogas production
    • Fuel substitution: compare fuel use in households with and without biogas to estimate biogas consumption
    • Direct measurement: Measure biogas production over time using specialized flow meters

    5. Other Information about Biogas Production

    • Financial and technical performance: issues in operation, maintenance, support from providers, and financing sources
    • Emission reductions: calculate reductions in greenhouse gases from switching to biogas, using information on fuel used before implementation
    • Energy access and socioeconomic impacts: time savings in fuel collection, health impacts of using biogas instead of other fuels

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Related Documents

    IRENA Statistics Measuring Small-Scale Biogas 2016 PDF

    Description

    Explore the methods for measuring small-scale biogas capacity and production based on IRENA's comprehensive report. This quiz covers essential parameters affecting biogas production and highlights the socio-economic and environmental benefits of biogas technologies. Ideal for energy statisticians and those interested in renewable energy solutions.

    More Like This

    Biogas Production and Usage Quiz
    10 questions

    Biogas Production and Usage Quiz

    ProminentTsilaisite avatar
    ProminentTsilaisite
    Biogas Production Process
    3 questions

    Biogas Production Process

    ScenicBluebell avatar
    ScenicBluebell
    Biogas Production and Upgrading
    10 questions

    Biogas Production and Upgrading

    AgileSetting avatar
    AgileSetting
    Bioprocédé de digestion anaérobie
    24 questions

    Bioprocédé de digestion anaérobie

    HighQualityTuba avatar
    HighQualityTuba
    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser