  A new Taylor-Couette system has been designed and constructed with precise
temperature control. Two concentric independently rotating cylinders are able
to rotate at maximum rates of $f_i = \pm20$ Hz for the inner cylinder and $f_o
= \pm10$ Hz for the outer cylinder. The inner cylinder has an outside radius of
$r_i = 75$ mm, and the outer cylinder has an inside radius of $r_o = 105$ mm,
resulting in a gap of $d=30$ mm. The height of the gap $L =549$ mm, giving a
volume of $V=9.3$l. The geometric parameters are $\eta = r_i/r_o = 0.714$ and
$\Gamma = L/d = 18.3$. With water as working fluid at room temperature the
Reynolds numbers that can be achieved are $\text{Re}_i = \omega_i r_i
(r_o-r_i)/\nu = 2.8 \times 10^5$ and $\text{Re}_o = \omega_o r_o (r_o-r_i)/\nu
= 2 \times 10^5$, or a combined Reynolds number of up to $\text{Re} = (\omega_i
r_i -\omega_o r_o)(r_o-r_i)/\nu = 4.8 \times 10^5$. If the working fluid is
changed to the fluorinated liquid FC-3284 with kinematic viscosity 0.42 cSt,
the combined Reynolds number can reach $\text{Re} = 1.1 \times 10^6$. The
apparatus features precise temperature control of the outer and inner cylinder
separately, and is fully optically accessible from the side and top. The new
facility offers the possibility to accurately study the process of boiling
inside a turbulent flow and its effect on the flow.
