Spontaneous Flow Heat Pump
Le Site de la pompe a chaleur a ecoulement spontane
http://www.new-energy-paces.com

Geothermal Heat Pump Energy - How It Works
Geothermal Heat Pumps by Sunteq/Enviroteq
http://www.geothermalheatpump.com/how.htm

Wikipedia: Heat Pump
Free encyclopedia article covering the technology basics. Addresses background, thermodynamic aspects for different types of heat pumps.
http://en.wikipedia.org/wiki/Heat_pumps

Therma-Stor Products
Manufacturer of free-standing dehumidifiers, ducted/installed dehumidifiers, commercial dehumidifiers, ventilation systems, heat recovery water heaters, restoration equipment (including dehumidifiers, air movers, meters, & instruments) & more.
http://www.thermastor.com/

The Engineering Page
The engineering page provides webbased calculation and information services for engineers. The calculations include pressure drop, line sizing, pump applications, centrifugal pump sizing and heat exchangers including thermal rating. The calculations can be used free of charge.
http://www.the-engineering-page.com

ICE Energy Ltd.
Ground Source Heat Pumps; Heat Pumps; geothermal;
http://www.iceenergy.co.uk/

Pump World
Centrifugal Pump and Positive Displacement Pump Educational Tutorials,Pump Manufacturer Links,Mechanical Seal Manufacturer Links,Pump Distributor Links
http://www.pumpworld.com/

Meterman Pump Systems, Inc.
Meterman Pump Systems customized pump systems, sales and service.
http://www.meterman.us/

Building your own Vacuum pump
Step by Step instruction to build your own Vacuum pump system.
http://www.dream-models.com/eco/vacuumpump.html

Aquatherm Industries, Inc.
Getting solar heating for swimming pools is easy! Ecosun from Aquatherm Industries has the best swimming pool heaters, solar pool heating systems, solar swimming pool heaters and more. If you’re comparing pool heaters, depend on us for the best pool heaters available.
http://www.warmwater.com/