Abstract: A tester interface unit comprising a test hardware module. The test hardware module may have a simple construction, relying on control and/or signal processing in one or more tester instruments to generate or analyze test signals for a device under test. The test hardware module may be disposed within the tester interface unit, providing a short and high integrity signal path length to the device under test. The tester interface unit may include a purge gas chamber and a cooling chamber, with the hardware module penetrate a separator between those chambers, sealing an opening between the purge gas chamber and the cooling chamber. A heat spreader may move heat generated on the portion of the test hardware module in the purge gas chamber to the cooling chamber.

Abstract: A tester interface unit comprising a test hardware module. The test hardware module may have a simple construction, relying on control and/or signal processing in one or more tester instruments to generate or analyze test signals for a device under test. The test hardware module may be disposed within the tester interface unit, providing a short and high integrity signal path length to the device under test. The tester interface unit may include a purge gas chamber and a cooling chamber, with the hardware module penetrate a separator between those chambers, sealing an opening between the purge gas chamber and the cooling chamber. A heat spreader may move heat generated on the portion of the test hardware module in the purge gas chamber to the cooling chamber.

Abstract: An exhaust gas heat recuperation system for use with a boiler is disclosed. The heat recuperation system includes a plate-type heat exchanger for exhaust gas heat recovery for exchanging heat between an exhaust gas and a charge gas. The heat exchanger preferably includes a series of exhaust gas plates stacked alternately with, and parallel to, a series of charge gas plates. Each of the exhaust gas plates and charge gas plates have raised contained ridges to form a substantially sinusoidal path for directing the respective gas therealong. The shape of the path reduces exhaust gas particulate deposition. The charge gas flows in a countercurrent to the exhaust gas to facilitate maximum heat transfer. The heat exchange is particularly useful in laminar flow conditions.

Abstract: An exhaust gas heat recuperation system for use with a boiler is disclosed. The heat recuperation system includes a plate-type heat exchanger for exhaust gas heat recovery for exchanging heat between an exhaust gas and a charge gas. The heat exchanger preferably includes a series of exhaust gas plates stacked alternately with, and parallel to, a series of charge gas plates. Each of the exhaust gas plates and charge gas plates have raised contained ridges to form a substantially sinusoidal path for directing the respective gas therealong. The shape of the path reduces exhaust gas particulate deposition. The charge gas flows in a countercurrent to the exhaust gas to facilitate maximum heat transfer. The heat exchange is particularly useful in laminar flow conditions.