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Canned Heat
Portable Thermal Energy Storage
J. Skardon
20 May 2013
jskardon@gmail.com
Opportunities
 No way to provide space heating using only
battery power
 PV Thermal systems size can be reduced by
50% if thermal energy can be stored
 First responders have no intrinsically safe way to
provide space heating using only battery power-
must ship fuel and fuel stoves
 No way to store heat indefinitely for future use
without extensive insulation
2John N. Skardon
Product Concept
 Modular/Portable Units (10-40 lbs)
 Store heat at room temperature, no
insulation, keep on shelf until needed
 Release heat by adding humid room temp
air- only requires a battery powered fan to
release kilowatts of hot air
 4X energy storage capacity of water
3John N. Skardon
A Few Technical Basics
 Material
 Synthetic adsorbent
 Can be purchased (bulk) or made on site
 Can be grown as very thin film
 Density: 650 kg/m3
 Energy storage 200kwh/m3
, upper limit 
300 kwh/m3
4John N. Skardon
5
Adsorption- Exothermic
Generation of Heat
Adsorbent filled cylinder Hot Dry
Air out
60-80C
As water adsorbs onto the Adsorbent, energy is
released and the weight of the Adsorbent container
increases due to the adsorbed water (max about
250mg/g of Adsorbent
uController
Rh, T sensors Rh, T sensors
25-35C
90% RH Air In
Temp Lift 15-40C
John N. Skardon
6
Desorption-Endothermic
Thermal Storage
As water desorbs, steam
is released and the weight
of the adsorbent container decreases
Adsorbent filled cylinder
Moist air
out
Renewable powered
air heater or waste
heat
150 to 250C
John N. Skardon
Simple Product Concepts
 Energy storage appliance
 Modular/expandable
energy storage bank
 Room Heater
 Emergency heat for car,
truck, first responder
 Seasonal heat storage
 Carbon credits?
7
A 20kg unit can store about
6 KW indefinitely at room
temp, no insulation needed.
Unit must be kept air tight
during storage (valves
closed)
John N. Skardon
Ad

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Canned Heat

  • 1. Canned Heat Portable Thermal Energy Storage J. Skardon 20 May 2013 jskardon@gmail.com
  • 2. Opportunities No way to provide space heating using only battery power PV Thermal systems size can be reduced by 50% if thermal energy can be stored First responders have no intrinsically safe way to provide space heating using only battery power- must ship fuel and fuel stoves No way to store heat indefinitely for future use without extensive insulation 2John N. Skardon
  • 3. Product Concept Modular/Portable Units (10-40 lbs) Store heat at room temperature, no insulation, keep on shelf until needed Release heat by adding humid room temp air- only requires a battery powered fan to release kilowatts of hot air 4X energy storage capacity of water 3John N. Skardon
  • 4. A Few Technical Basics Material Synthetic adsorbent Can be purchased (bulk) or made on site Can be grown as very thin film Density: 650 kg/m3 Energy storage 200kwh/m3 , upper limit 300 kwh/m3 4John N. Skardon
  • 5. 5 Adsorption- Exothermic Generation of Heat Adsorbent filled cylinder Hot Dry Air out 60-80C As water adsorbs onto the Adsorbent, energy is released and the weight of the Adsorbent container increases due to the adsorbed water (max about 250mg/g of Adsorbent uController Rh, T sensors Rh, T sensors 25-35C 90% RH Air In Temp Lift 15-40C John N. Skardon
  • 6. 6 Desorption-Endothermic Thermal Storage As water desorbs, steam is released and the weight of the adsorbent container decreases Adsorbent filled cylinder Moist air out Renewable powered air heater or waste heat 150 to 250C John N. Skardon
  • 7. Simple Product Concepts Energy storage appliance Modular/expandable energy storage bank Room Heater Emergency heat for car, truck, first responder Seasonal heat storage Carbon credits? 7 A 20kg unit can store about 6 KW indefinitely at room temp, no insulation needed. Unit must be kept air tight during storage (valves closed) John N. Skardon