renewable energy for food preservation
DESCRIPTION
This presentation explores the food-energy-water nexus in light of renewable energy for food preservation. It provides information on projects taken up by TERI for commercialising renewable powered small scale cold storagesTRANSCRIPT
RENEWABLE ENERGY FOR PRESERVATION OF FRESH FOOD
Anand Upadhyay, Associate Fellow
The Energy and Resources Institute
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1. The Nexus
2. The problems
3. RE as a soln.
4. TERI projects
Background
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The Good • India is the 2nd largest producer of fruits and vegetables in the
world.
• Horticulture provides 6.5% of the countries GDP, 13% of employment and accounts for more than 9% of Indian exports with only 9% crop acreage.
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The Bad
Harvested fruits and vegetables, worth
USD 12 billion are lost due to lack of post harvest handling and storage
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and The Ugly…
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• Short fall of 10 million tones storage capacity
• Energy costs account for about 30% of operating costs.
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Energy and Food production balance
• Solar-energy-powered traditional agriculture can produce 1100 kg of food grain/hectare
• This balance has been violated by two groups
– Affluent group: used fossil fuel to increase yield
– Other group: Needs beyond 1100 kg/hectare !!!
• Key to balance
– Stopping population growth
– Renewable powered agriculture
Source: Balancing energy and food production, 1975—2000; Gross, Chancellor; Science (1976)
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Energy for Food
• ‘Focused’ data hardly available
• India – 14%; USA – 7% (Agriculture energy consumption in resp. country)
9 Source: http://www.postcarbon.org/articles/where-energy-goes.png
Water for Food • Irrigation water ≥ 70% of freshwater (higher in
some countries e.g. India, Vietnam)
• Upto 80% of water bills = energy costs
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1987 1994
2001 2007
BUT WHAT WENT WRONG ?!!
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Some of the issues
• Centralization of resource supply – losing the collective knowledge
• Incoherent policies
• Compartmentalized efficiencies
• Not paying the right price
AND…
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The big issue
Not a surprise !!!
It’s a RESOURCE CRUNCH We don’t have enough fossil resource
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Most of the Indian landscape is blessed with
perennial solar energy +
biomass in villages
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In 2006, TERI started working on a concept whereby indigenously available biomass and solar resources could be used to operate small, decentralized cold storage right at the village level
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Interactions…
Consultations with
• National Horticulture Board
• District Horticulture Offices
• Central Food Technological
Research Institute
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… Elaborate exercise to understand the field requirements.
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The System
• A 15 kW Vapor Absorption Machine (VAM) coupled with a 50 kWe Biomass Gasifier system and a field of solar collectors.
• Locally available biomass is used in the Biomass Gasifier to produce synthesis gas, which will then be used to run an engine to produce electricity.
• Additionally the heat energy from the sun and gasifier is being utilized by the VAM to produce cooling effect in the cold storage.
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The System
Cold Storage
Ammonia VAM
Biomass Gasifier Gas Engine
Solar Dishes
Electrical Power 19
The System
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Solar dishes
VAM
Gasifier system
Cold storage
To provide
• 50 kW clean grid quality power
• Cold storage facility for about 20 tonnes of fruits or vegetables.
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TRNSYS simulation results Initial cooling load profile after product
has been loaded in cold chamber
Cooling load over next 30 days after
product has been brought to storage
temperature
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TRNSYS
model
Project Site
Located in SEC campus, Gurgaon, near solar
parabolic trough collector field
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The Beginning… 23
Setting up of system
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Complete system
Technological USPs
• First of a kind in World
• Ammonia based VAM – GAX cycle – built for sub zero temperature State of the ART
• Biomass – TERI’s Advanced Gasification System
• Solar –Fixed focus concentrating dish
Renewable Energy
• Electricity generated from gasifier & gas engine Grid
Independent
• Integration of Biomass gasifier, Solar dishes and Ammonia VAM with Cold storage
System Integration
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Specifications
Cold Storage capacity : 20 MT
Cooling Capacity : 15 kW
Cold storage Temperature : 0 to 5°C
Gas Engine capacity : 50 kWe
Biomass consumption : 60 kg/hr
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Deliverables = Needs
Power Generation
Grid quality power for domestic,
community, and
productive loads
Cold Storage
Fruits
Vegetables
Dairy & Milk
Flowers*
Fish & Meat*
Size
Cooling Duty
(15 to 50 kW)
Capacity
(20 to 100 MT)
Energy Requirement
Self Sufficient
Derivative schemes
Energy side variations
Biomass
Solar
Technology
Absorption technology for
positive temperatures
Absorption technology for sub zero temperatures
Vapor compression technology for all
temperatures
Application
Horticultural
Non horticultural
Food processing
Deep Freezing
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Mix ‘n’ match
• Biomass coupled with absorption Technology Scheme A
• Solar & Biomass Hybrid Coupled with Absorption Technology Scheme B
• Biomass coupled with vapor compression Technology Scheme C
• Solar PV powered Scheme D
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First Field System :)
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50kWe advanced biomass gasifier power generation system
Cold Storage of 15 MT storage capacity
Advanced prepaid metering system and safety features
Operated by village community
Designed and commissioned by TERI
Salient features of the field system
Overview
• Project partners – TERI, CSIRO (Australia)
• Project funded by - AusAID
• Location - District Sitapur, State – Uttar Pradesh
• Villages covered - 2
Coverage
• Cold Storage – 15 MT
• 140 households (to start with)each with 100 W load
• Productive loads - Irrigation pumps, Flour mills,
Battery charging
• Community - Street lights, School, Local Office
Project highlights 140 households spread over two villages are being provided 100 W each
Technical specifications and safety features conforming to REC standards
Power monitoring at generation and load centres to prevent pilferage
Smart metering
o Differential prepaid electricity billing for all consumers
o Display of balance money for individual houses/load centres
o Over consumption isolates the household/load centre automatically, requiring manual
intervention to restart
LED streetlights with efficient features, dimming, and movement actuated
Productive loads to be covered – irrigation pumps, flour mills and battery charging.
Site Layout
Electricity distribution system, along with Cold store in inset (right)
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