Patent ID: 8082748
Filing Date: 2011-12-27
Classification: F03D,Y02E

Abstract:
1. A wind turbine generator comprising: a nacelle for accommodating a generator set; an internal heat exchanging unit accommodated in the nacelle to exchange heat between the generator set and a refrigerant; an external heat exchanging unit disposed outside the nacelle to exchange heat between outside air and the refrigerant; a compressor disposed in the nacelle to compress the refrigerant and circulate the refrigerant between the internal heat exchanging unit and the external heat exchanging unit; and an expansion unit to expand the refrigerant compressed by the compressor, wherein the compressor is capable of switching between a refrigeration cycle and a heat pump cycle by switching a discharge in direction of a refrigerant from the compressor, the refrigeration cycle circulates the refrigerant discharged from the compressor through the external heat exchanging unit, the expansion unit, the internal heat exchanging unit, and the compressor in this order, and the heat pump cycle circulates the refrigerant discharged from the compressor through the internal heat exchanging unit, the expansion unit, the external heat exchanging unit, and the compressor in this order.