sorption energy
DESCRIPTION
Gas-fired adsorption heat pumpsTRANSCRIPT
David AutyBob Critoph
December 2011
Commercial – Strictly Confidential
2Commercial – Strictly Confidential
Gas-fired adsorption heat pumps
High Efficiency
air-source products
for domestic heating and hot water
3Commercial – Strictly Confidential
30% annual fuel savings proven by prototype testing.
38% achievable from identified developments in short and medium term
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10oC ambient temperature90% condensing boiler efficiency (HCV)British Gas gas and electricity prices June 2010Standard heat pump: Dimplex LI 8 MS
Comparison of Heating Costs
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Fits into standard wall-mounted casing
• Box-for-box replacement of old boiler
• Retrofit market >90% of annual sales
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SorptionGenerator
1Heated
SorptionGenerator
2Cooled
Condenser
EvaporatorAmbient Air to Evaporator
Cooled Air from Evaporator
Refrigerant
Gas Burner
Hot Gases
Heat Exchanger heats heat-transfer
fluid
Warm Exhaust Gases
Inlet Air
Final Exhaust Heat Exchanger
Cool Exhaust Gases
Heat exchangerto house
Hot water feed to house
Hot water return from house
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Bed 4
Bed 3
SorptionGenerator
1Heated
SorptionGenerator
2Cooled
Condenser
EvaporatorAmbient Air to Evaporator
Cooled Air from Evaporator
Gas Burner
Hot Gases
Heat Exchanger heats heat-transfer
fluid
Warm Exhaust Gases
Inlet Air
Final Exhaust Heat Exchanger
Cool Exhaust Gases
Heat exchangerto house
Hot water feed to house
Hot water return from house
Refrigerant
8Commercial – Strictly Confidential
9Commercial – Strictly Confidential
Technology and component supplier to OEM
• Aiming to partner with global boiler OEMs
• We supply sorption technology and sub-assembly
• OEMs build and sell consumer products under their brands
10Commercial – Strictly Confidential
Overall performance prediction
Heating power 7kW
Core burner efficiency 93% plus exhaust heat recovery
Based on natural gas Lower Heating Value
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1
Top valve assembly
Bottom valve assembly
Generators
Gas heat exchanger
Burner
Evaporators
Commercial – Strictly Confidential
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Generator assembly
Commercial – Strictly Confidential
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Valve modelling
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Environmental test chambers
Commercial – Strictly Confidential
15Commercial – Strictly Confidential
Payback within 2 years from fuel savings
• About twice cost of condensing boiler
• Similar installation costs inside house– But have to mount evaporator on outside wall
• Use existing boiler installers with same trade skills– No refrigeration skills necessary
• Fuel savings give pay-back in ~24 months– As low as 12 months for our newest technology
• Even more attractive with Government incentives
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• 30% fuel savings with more on the way
• Fits within standard wall-mounted unit
• Retrofit market using existing installers
• Payback in about 2 years, possibly much less
• Selling technology & components to boiler OEMs
In summary
Commercial – Strictly Confidential
end
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