Detecting and repairing leaks in bore-hole cladding - detecting by electrical current measurements between electrodes and repairing by galvanoplasty partic. useful for plastic material cladding
FR2431004A1
Geothermal exchanger taking heat from ground air-conditioning - is installed by simultaneous drilling and casing of hole, partic. useful in loose ground
FR2357721A1
Geothermal well sinking system - inserts plastics tube into hole and fills up surrounding annular space inside walls
FR2296827A1
Heat pump circulation system - has heat exchanger with cooling and heating passages connecting compressor condenser and expander unit
FR2296829A1
Heat pump circuit for cooling or heating - has auxiliary section with compressor, expander, condenser and evaporator using additional heat source
OA4817A
Method and device for the thermal conditioning of a room, a tank or the like
ES427810A1
New procedure for climatization of premises. (Machine-translation by Google Translate, not legally binding)
US3965694A
Method and device for thermally air-conditioning a room, a vat or the like
FR2246922A1
Record or magnetic tape for a juke-box - has blank groove or uniform magnetic field maintaining silence of juke-box
FR2246193A5
Hydraulic pump for lifting water - has partly immersed double chamber connected by pipes to compressor on surface
