Liquid gas, e.g. nitrogen, cooling system, e.g. to cool monochromator; has insulated coolant container for first deep frozen liquid gas, heat exchanger circuit and second deep frozen liquid gas and filling unit for heat exchanger circuit

摘要

The liquid gas cooling system has a first deep-frozen liquid gas, a heat exchanger in which a second deep-frozen liquid gas flows and a filling unit (6), which has a pressure regulated supply tank (7) for the second deep frozen liquid gas (5), which is connected with the heat exchange circuit (4). A vacuum pump (11) is provided for pumping out gaseous first liquid gas (3) from the coolant container (2), to reduce or hold the inner pressure in the coolant container (2) under the ambient pressure.