Table 2.

Simulation results for a vial at T = 290 K and the TESU at 80 K, where a helium gas flow at 80 K is forced around the vial.

Mass flow $\dot{\mathit{m}}$ [mg s−1]	${\dot{\mathit{Q}}}_{\mathbf{vial}}$ [W]	${\dot{\mathit{Q}}}_{\mathbf{TESU}}$ [W]	${\dot{\mathit{Q}}}_{\mathbf{outlet}}$ [W]	$\mathbf{\Delta }{\dot{\mathit{H}}}_{\mathbf{est}}$ [W]	$\frac{{\dot{\mathit{Q}}}_{\mathbf{vial}}\mathbf{(}\dot{\mathit{m}}\mathbf{)}}{{\dot{\mathit{Q}}}_{\mathbf{vial}}\mathbf{(}\dot{\mathit{m}}\mathbf{=}\mathbf{0}\mathbf{)}}$	$\frac{{\dot{\mathit{Q}}}_{\mathbf{outlet}}}{{\dot{\mathit{Q}}}_{\mathbf{vial}}}$
0	−68.2	68.0	0	0	—	—
4	−71.1	69.1	1.8	2.0	1.04	0.03
20	−80.0	70.1	9.0	10.4	1.17	0.11
40	−88.7	69.0	18.0	20.8	1.30	0.20

${\dot{Q}}_{\mathrm{vial}}$, ${\dot{Q}}_{\mathrm{TESU}}$ and ${\dot{Q}}_{\mathrm{outlet}}$ are the heat flows from the vial, TESU and carried by the flow, respectively. As a reference, evaluation of Eq. 1 for the same temperature difference yields 65.3 W.