PDF Publication Title:
Text from PDF Page: 063
METHANE RECOVERY FROM ANIMAL MANURES: THE CURRENT OPPORTUNITIES CASEBOOK electricity supplier might find these more advantageous in the long run than concerns over short- term issues such as revenue erosion. Providing technology that supports a sustainable livestock industry also provides the servicing utility with productive large-scale energy customers at feed and packing plants that can require more than 70% of the electrical energy required in the total life-cycle of pork production. 3.6 Economic Evaluation Summary Two guides were constructed to assess the economic benefit of anaerobic digesters. The first was a covered anaerobic lagoon digester operating on a swine farm in North Carolina, the second was a plug-flow digester operating on a dairy farm in New York. Life-cycle savings were estimated, with sensitivities considered for investment risk. A word of caution is in order--the evaluations presented here should be used to provide a rough estimation only. Nevertheless, these evaluations offer the following major conclusion. Having a full range of creditable coproducts that can be used as revenues in a pro forma analysis can make a significant difference in whether a project has investment merit for the user. Quite simply, it is very difficult to justify the investment in an anaerobic digester based only on the revenue received for offsetting currently purchased electricity and the sales of surplus electricity. The profitable operation is one that maximizes use of all coproducts, especially engine/generator waste heat that can be recovered for productive on-farm uses. Other direct economic returns can be had from the use of digested solids and liquids. Finally, economics is too often criticized for “knowing the price of everything and the value of nothing.” The analyses presented here do not provide a quantifiable price impact for some of the more subjective value advantages that can result from the adoption of farm-based AD technology. For example, no value was calculated for environmental externalities. Unrecovered methane in biogas produced by the inevitable decomposition of animal manures is a suspected agent of global climate change. Biogas can be converted into carbon dioxide through combustion by an engine/generator. A second unquantified externality is the ability of anaerobic digesters to help control odors and flies. With urban encroachment into rural areas, many farms today use a digester specifically installed for odor control. Probably the best example of this is a farm in Lancaster, Pennsylvania. When faced with urban encroachment near the farm, the owner initiated his digestion project because of his desire to proactively reduce the risk of odor complaints from the new neighbors. Other on-farm impacts are difficult to value. The installation of an anaerobic digester often reduces the direct labor requirements associated with daily manure management and especially the sometimes frequent need for holding pit pump-outs or the cleaning of clogged irrigation guns. Additional value can also be derived from reduction in the need to purchase fertilizers and soil conditioners. Just as many farmers do not charge for the value of their labor, many farmers also do not fully offset the cost reductions associated with using digested liquid nutrients or tilth- building solids. 3-22PDF Image | Methane Recovery from Animal Manures The Current Opportunities Casebook
PDF Search Title:
Methane Recovery from Animal Manures The Current Opportunities CasebookOriginal File Name Searched:
biogas02.pdfDIY PDF Search: Google It | Yahoo | Bing
Capstone Turbine and Microturbine: Capstone microturbines used and new surplus for sale listing More Info
Consulting and Strategy Services: Need help with Capstone Turbine, sizing systems, applications, or renewable energy strategy, we are here to assist More Info
Container Lumber Dry Kiln: Since 1991 developing and innovating dry kilns using standard shipping containers More Info
Supercritical CO2 Lumber Dry Kiln: Compact fast drying in 3 days or less for small amounts of wood and lumber drying More Info
BitCoin Mining: Bitcoin Mining and Cryptocurrency... More Info
Publications: Capstone Turbine publications for microturbine and distributed energy More Info
FileMaker Software for Renewable Energy Developing database software for the renewable energy industry More Info
CO2 Gas to Liquids On-Demand Production Cart Developing a supercritical CO2 to alcohol on-demand production system (via Nafion reverse fuel cell) More Info
Stranded Gas for low cost power Bitcoin Mining Using stranded gas for generators may provide breakthrough low power costs for cryptocurrency miners. More Info
CONTACT TEL: 608-238-6001 Email: greg@globalmicroturbine.com (Standard Web Page)