The present invention provides a hybrid refrigeration system, a control method thereof, and a transportation refrigeration vehicle. The hybrid refrigeration system comprises: a liquid nitrogen based first refrigeration device (5) for regulating the tempera...

The air conditioning plant has a cold medium circuit with a compressor (14), condenser (18) and evaporator (16), in a heat exchanger housing (22). There is at least one air diverting device for selectively opening at least one outside air aperture (44) of ...

A hot water system for a narrowboat which system comprises an auxiliary heater (10) used to heat a potable water tank (30) and further to heat living areas of the narrowboat. The auxiliary heater (10) and a temperature measuring device (31) operable connec...

The device has a shutter (1) with two vibration fins (3a, 3b) fixed on a support (2). The fins are of different types and are mounted alternately and vibrate in a different manner. One fin (3a) is connected to the support by N fasteners and the other fin (...