Peter Engler, Christian Heller and Stefan ® Müller with the Thermalia twin in front of the climate chamber.
® A Belaria in the interior of the climate chamber during a test.
Roland Oehri and Beni Zeneli checking the hydraulic system.
cannot be bought. They are based on Hoval know-how – and on the experience of Michael Eschmann, who directs the Heat Pump Test Centre (WPZ) at the nearby University for Technology in Buchs (NTB).
system will be inspected for approval by the WPZ of the NTB in the near future. Heat pumps that are inspected at the WPZ can obtain the international quality seal. The test centre in Buch concentrates on power ranges up to 20 kW for air-water and up to 50 kW for brinewater systems. “Hoval heat pumps, which lie above this power spectrum, can now be tested directly at our headquarters in Vaduz,” Stefan Müller declares.
And now to the quantum leap. The two test benches accelerate and reinforce further development of the successful ® ® Hoval Thermalia and Belaria heat pumps. The test system will also make advances into higher power ranges feasible – ranges that up to now have not been reachable with heat pump test benches in Switzerland. “Our customers can anticipate that we will be raising the performance of this technology to the next stage of development.”
For the layman, the test bench for brine-water heat pumps looks like a small refinery with looping and intertwining lines, all of them of stainless steel. To test air-water heat pumps, Christian Heller set up a climate chamber that can generate subzero Siberian temperatures, at least down to minus 20 °C, and can also simulate tropical jungles with temperatures up to 43 °C and a relative humidity of 65%. “We built our system to use the exhaust heat from heat pumps to warm the climate chamber,” explains Christian Heller.
Heat pumps for every application field Hoval offers heat pumps for all application fields. The heat pumps feature high coefficients of performance (COP) and can be
easily combined with other heat generators. Ready-to-install complete systems with a compact design simplify installation and save space.
“... We will raise the performance of this technology to the next stage of development.” Peter Gerner, CEO Heating Technology and Executive Board Hoval Group
The heat output and coefficient of performance (COP), which expresses the ratio of heating power to consumed electrical power, are the two most important parameters. “To determine these values, we integrated technologically advanced measurement equipment in our system,” explains Christian Heller. Every temperature and pressure sensor in the two test benches is certified according to ISO 9001. The entire
Winter 2011 / 2012
Thermalia ® brine-water and water-water heat pumps
Belaria ® air-water heat pumps