Search for Excess Heat from Deuterium Glow Discharge
The initial replication undertaken by the newly organized Coolescence team was the search for excess heat from palladium loaded with deuterium in a glow discharge. Excess heat had been first been reported from deuterium glow discharge onto a palladium target by Karabut's group in Russia.  About a decade later it was again reported in an early publication from the Energetics Technologies team in Israel. 
Following the lead of both earlier groups, a water cooled plasma chamber was configured as flow calorimeter. The initial calorimeter had a sensitivity of > 50 mW and an uncertainty > 2% of input power. Fast capacitive manometer type pressure gauges allowed for accurate flux and loading efficiency measurements using a pulsed plasma technique.
A second generation flow calorimeter was built with a sensitivity of 20 mW or 1% of input power. Loading behavior of Pd has been characterized in DC and pulsed DC discharges.
The following observations have been made during glow discharge loading runs:
No high loading (D/Pd < .7)
No bulk loading at higher temperatures (T > 80 deg C)
Loading rate proportional to current (J < 100mA/cm2)
5-10 D’s loaded for each D+ of ion current (Faradaic Efficiency 5-10)
High D flux during pulsed discharge (.01 sccm/cm2 per mA of glow)
Instantaneous loading rate insensitive to temperature, voltage, and pressure
GD causes damage to Pd (sputtering)
No excess heat has been observed during glow discharge experiments.
 Karabut, A.B., Kucherov, Y.R., Savvatimova, I.B., Possible Nuclear Reactions Mechanisms at Glow Discharge in Deuterium, "Frontiers of Cold Fusion". 1992 Nagoya Japan: Universal Academy Press Inc., Tokyo, Japan  Dardik, I, et.al, Intensification Of Low Energy Nuclear Reactions Using Superwave Excitation, in Tenth Internationational Conference on Cold Fusion, 2003, Cambridge, MA USA