Abstract: A method for measuring heat dissipation of electromechanical device includes: S1. establishing a measuring apparatus; S2. measuring and obtaining data: a mass flow m corresponding to each cooling medium flowing through a housing, a temperature T1 of a liquid inlet, a temperature T2 of a liquid outlet, a temperature T3 of an air inlet, a temperature T4 of an air outlet, a temperature T5 of the inside wall of the housing, a temperature T6 of the outside wall of the housing, a total area A of the inside wall of the housing, and a wall thickness L of the housing are measured by the measuring elements; S3. calculating the heat dissipation. The heat dissipation of the electromechanical device under a working condition is measured so as to provide a reference for the heat dissipation design of electromechanical device.

Abstract: A method for designing startup critical tube diameter of pulsating heat pipe in vertical state, including the following steps: step 1. establishing a first model of working medium mass in pulsating heat pipe; step 2. establishing a second model of working medium mass in pulsating heat pipe, the second model including the vapor working medium mass model and the liquid working medium mass model in the pulsating heat pipe; step 3. according to the law of conservation of mass, combining the first model and the second model, and determining the volume percentage of the liquid working medium in the total length of the pulsating heat pipe under the condition of heat addition; step 4.

Abstract: A liquid metal high-temperature oscillating heat pipe and a testing system are provided. The testing system contains the high-temperature oscillating heat pipe, a high-temperature heating furnace, a cooling liquid block, a high-pressure pump, a constant temperature liquid bath, a mass flowmeter, a filter, a cooling liquid valve, and a measurement and control connected to the aforementioned devices. The constant temperature liquid bath, the high-pressure pump, the filter, the cooling liquid valve, a liquid filling port tee-junction, the cooling liquid block, a liquid outlet tee-junction, and the mass flowmeter are connected in sequence and the mass flowmeter is connected to the constant temperature liquid bath. The front side of the cooling liquid block is provided with a channel connected to a condenser of the high-temperature oscillating heat pipe. The adiabatic section of the high-temperature oscillating heat pipe being connected to the high-temperature heating furnace.

Abstract: A method for measuring heat dissipation of electromechanical device includes: S1. establishing a measuring apparatus; S2. measuring and obtaining data: a mass flow m corresponding to each cooling medium flowing through a housing, a temperature T1 of a liquid inlet, a temperature T2 of a liquid outlet, a temperature T3 of an air inlet, a temperature T4 of an air outlet, a temperature T5 of the inside wall of the housing, a temperature T6 of the outside wall of the housing, a total area A of the inside wall of the housing, and a wall thickness L of the housing are measured by the measuring elements; S3. calculating the heat dissipation. The heat dissipation of the electromechanical device under a working condition is measured so as to provide a reference for the heat dissipation design of electromechanical device.

Abstract: A method for designing startup critical tube diameter of pulsating heat pipe in vertical state, including the following steps: step 1. establishing a first model of working medium mass in pulsating heat pipe; step 2. establishing a second model of working medium mass in pulsating heat pipe, the second model including the vapor working medium mass model and the liquid working medium mass model in the pulsating heat pipe; step 3. according to the law of conservation of mass, combining the first model and the second model, and determining the volume percentage of the liquid working medium in the total length of the pulsating heat pipe under the condition of heat addition; step 4.