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The total electricity requirement reduces
substantially. A small DG set is adequate for auxiliary
power needs of cold storage.
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The bio-mass and other agro-fuels available
locally can be used to drive AARP. The operating cost and
maintenance cost of the cold storage is therefore very low.
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The cold storage can store a wide range of
products at different temp. due to versatile AARP.
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Any other simultaneous refrigeration load
such as Ice Plant or Milk Chilling can be met with the same
plant.
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AARP
for Pasteurization of Milk
with Combined Heating and Cooling on Agro Fuel Fired Boilers.
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Pasteurization of milk involves heating and chilling of milk in
predetermined cycle. Also there are other chilling loads such as
milk cold storage. There are additional heating loads such as ghee
or butter boiling, milkcan washing etc.
Conventionally in a small scale dairy industry
(typically 50000 lit/day milk handling capacity), the heating of
milk is done by an oil/gas fired hot water
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generator or steam boiler and chilling is done by a electrically driven
compression cycle refrigeration plant coupled to an Ice Bank Tank. The
rising cost of fuel oil as well as electric power has increased the cost
of milk processing substantially, adversely affecting the viability of
small scale dairy plants.
A bio-mass / Coal fired steam boiler / Hot water generator combined
with use of AARP for refrigeration substantially reduces the cost of milk
processing. Modern pollution control equipments such as cyclone separators
and or bag filters are provided for clean and smoke-less exhaust from
Boiler.
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Waste Heat Utilization
by AARP for Ice Production / Cold Storage / Brine Chilling
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There are many unutilized industrial waste heat sources like Incinerator
or Furnace hot gases, process waste heat etc.
Also many industries such as steel mills, textile spinning mills,
generate waste heat.
Heat is rejected from captive power plants to atmosphere both through
exhaust gas & jacket cooling water.
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A Heat Recovery Steam Boiler or Hot Water Generator can be installed to
recover such waste heats from these exhaust gases. The steam / heat output
from the exhaust heat recovery Boilers is then used for driving an Ammonia
Absorption Refrigeration Plant for producing block ice. This ice can be
sold as a by-product to bulk as well as retail consumers in the local area
such as dairies, fisheries etc. Alternatively, Brine Chilling as a cold
storage of suitable capacity can be operated using the exhaust heat.
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