Improvair - Vent on Demand Gas Interlock System

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• Thermal Recovery Systems

www.improvair.co.uk
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Why are we here today?

• To Develop a Working Relationship
• Share information on a R D basis
• In Return we offer
• Carbon Reduction
• Energy Savings
• Cost Reduction

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Principal Of Operation

• The system comprises of a Bespoke Extract Canopy
  and Duct Heat Recovery System.
• The patented system comprises of a Gas to Fluid
  (Air to water) heat exchanger.
• Heat collected is transferred into a thermal
  Store.
• This Energy is then used to pre-heat the cold
  mains supply water supply to feed dish washers,
  conventional hot water cylinder and / or
  combination boiler for heating or LPHW heater
  batteries.

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Design of Heat Exchanger

• The heat exchanger has been designed into the
  canopy and ductwork.
• The heat is transferred in an inherently safe
  environment out side the contaminated air flow.
• No heat exchangers within the canopy or ductwork
  leaving no obstructions for inspection and
  cleaning.
• No obstructions in the extract system no effect
  on extract rates.

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Breakdown of energy use in the average Hotel /Pub.
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Energy Collection Graph 1
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Explanation of Graph 1

• Graph number 1 S1 shows a temperature elevation
  of 19C over 6 hours from 20C to 39C.
• S2 Shows the flow temperature from the canopy to
  the 300lt thermal store achieving 49C over the
  same duration.
• These temperatures have been taken from only 24kw
  input from the test rig.

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Graph Number 2
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Explanation of Graph 2

• Here we ran 100lt of water off to waste every 30
  minutes to simulate a working kitchen.
• As you can see there was a steady rise in
  temperature during this process.
• We collected 1.83kwh per hour with an input of
  24kw LPG gas burner and copper sheet collection
  area of only 1.28m2 on the canopy and a duct
  collector area of 1.1m2

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Any Questions ?
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• Thank You