Short answer

Design integrated renewable energy systems that convert agricultural waste into biogas, coupled with waste heat recovery, to achieve energy self-sufficiency and reduce the environmental impact of dairy farms.

Field: Sustainability
Source: European Journal of Sustainable Development Research (2021)
Method: Techno-economic and environmental analysis
Evidence: Strong effect

Utilizing farm waste to generate biogas for micro gas turbines, coupled with waste heat recovery systems, can meet a dairy farm's energy needs while minimizing its environmental footprint. This sustainability research insight is drawn from a 2021 study published in European Journal of Sustainable Development Research. Using Techno-economic and environmental analysis, researchers explored how this design variable affects real-world outcomes. The key design takeaway: Design integrated renewable energy systems that convert agricultural waste into biogas, coupled with waste heat recovery, to achieve energy self-sufficiency and reduce the environmental impact of dairy farms.

Study

SustainabilityHigh ImpactStrong effect

Dairy farm waste can power operations and reduce environmental impact through integrated renewable energy systems.

Utilizing farm waste to generate biogas for micro gas turbines, coupled with waste heat recovery systems, can meet a dairy farm's energy needs while minimizing its environmental footprint.

European Journal of Sustainable Development Research · 2021

Key Findings

01Dairy farms of varying sizes (250-6000 cows) can meet their cooling and electricity needs using micro gas turbines (100-1000 kW) powered by on-site biogas.
02Environmental performance is optimized when the system's net energy output precisely matches the farm's requirements, avoiding excess electricity generation.
03Specific configurations are recommended for farms under 2000 cows to balance environmental impact and financial viability.

Application

Design takeaway

How to apply

Consider implementing anaerobic digestion and micro gas turbine systems on farms, integrating waste heat recovery for cooling or heating, and sizing the system to meet the farm's specific energy consumption profile.

Project actions

01Investigate local agricultural waste streams for potential energy generation.
02Research different types of anaerobic digesters and biogas utilization technologies.
03Consider the full life cycle impact of the proposed energy system.

Method & Evidence

AimTo assess the economic and environmental viability of multi-generational renewable energy systems powered by farm waste for grid-independent dairy farms.

MethodTechno-economic and environmental analysis

ProcedureThe study modelled integrated micro gas turbine systems using biogas from anaerobic digesters fed with farm waste. These systems were coupled with absorption refrigeration and organic Rankine cycles to meet farm cooling and electrical demands across various farm sizes. Economic and environmental performance was evaluated for different configurations.

ContextDairy farming operations in Ontario, Canada.

Variables

IV["Farm size (number of cows)","Micro gas turbine capacity","Integration of absorption refrigeration and organic Rankine cycles"]

DV["Economic viability (e.g., cost savings, payback period)","Environmental performance (e.g., greenhouse gas reduction)","Energy output (electricity and cooling)"]

CV["Type of farm waste (manure)","Biogas production rate","Location (Ontario, Canada)"]

Strengths & Limitations

Strengths

+Comprehensive analysis of both economic and environmental factors.
+Consideration of integrated systems for multiple energy needs (electricity and cooling).
+Focus on a practical application for agricultural sustainability.

Limitations

Scaling up from a small experiment to a full farm operation can present significant engineering challenges. The cost of initial setup can also be a barrier.

Reliability & validity

The study's validity is supported by its detailed modelling and analysis of specific system components. Reliability could be enhanced by considering a wider range of operational parameters and potential failure modes.

Think critically

How might the variability of farm waste composition and availability impact the reliability and efficiency of biogas-powered energy systems?

Design Principles

"Waste-to-energy systems should be designed to precisely match local demand to optimize environmental and economic performance."

This approach offers a pathway for agricultural operations to achieve energy independence and reduce greenhouse gas emissions. By transforming waste into a valuable resource, farms can improve their economic viability and contribute to a more sustainable food system.

What This Means for Your Design

Using cow manure to make biogas can power a farm's electricity and cooling needs, and using the leftover heat makes it even better for the environment and the farm's budget.

How to use in your project

1.Use this research to justify the selection of a waste-to-energy system for a design project focused on sustainable agriculture.
2.Cite the findings on optimized energy output matching demand to support design decisions.

Add to My Project

Quick Cite

Paragraph starter

Research by Veerabhadra Reddy et al. (2021) demonstrates that integrated renewable energy systems utilizing farm waste can significantly enhance the sustainability of dairy operations. Their analysis of micro gas turbine systems powered by biogas from anaerobic digesters, coupled with waste heat recovery, showed that farms can achieve energy independence while minimizing environmental impact, particularly when energy generation is precisely matched to on-site demand.

Source

European Journal of Sustainable Development Research

Economic and Environmental Analyses of Multi-Generation Renewable Energy System for Dairy Farms

journal · 2021

View source

Questions About This Research

What does the research say about dairy farm waste can power operations and reduce environmental impact through integrated renewable energy systems?: Design integrated renewable energy systems that convert agricultural waste into biogas, coupled with waste heat recovery, to achieve energy self-sufficiency and reduce the environmental impact of dairy farms. Evidence: European Journal of Sustainable Development Research (2021).
Why does "Dairy farm waste can power operations and reduce environmental impact through integrated renewable energy systems." matter for design?: This approach offers a pathway for agricultural operations to achieve energy independence and reduce greenhouse gas emissions. By transforming waste into a valuable resource, farms can improve their economic viability and contribute to a more sustainable food system.
How can designers apply this research?: Design integrated renewable energy systems that convert agricultural waste into biogas, coupled with waste heat recovery, to achieve energy self-sufficiency and reduce the environmental impact of dairy farms.
What were the main findings?: Dairy farms of varying sizes (250-6000 cows) can meet their cooling and electricity needs using micro gas turbines (100-1000 kW) powered by on-site biogas.. Environmental performance is optimized when the system's net energy output precisely matches the farm's requirements, avoiding excess electricity generation.. Specific configurations are recommended for farms under 2000 cows to balance environmental impact and financial viability.
What research method was used?: Techno-economic and environmental analysis.
How strong is the evidence?: Evidence strength is rated Strong effect, based on a 2021 journal from European Journal of Sustainable Development Research.
What should I do differently in my next project?: Consider implementing anaerobic digestion and micro gas turbine systems on farms, integrating waste heat recovery for cooling or heating, and sizing the system to meet the farm's specific energy consumption profile.
What are the limitations?: The study focused on a specific geographical location (Ontario, Canada) and farm types (dairy farms), and the economic viability may be influenced by fluctuating energy prices and government incentives.