Aerospace Grade Loop Heat Pipes

The porous wick is the core component of the loop heat pipe, and the porous wick manufactured by entropyx has the following properties：

1）Bore diameter：1μm（Proportion>95% ）；

2）Opening porosity：65%~75%；

3）Permeability：>1.0×10^-14m²；

4）Equivalent thermal conductivity：<3W/(m·K)；

5）Materials: nickel/titanium/copper porous wick, silicon nitride/potassium titanate/ aluminum borate/magnesium oxide ceramic whisker wick, ceramic whisker reinforced metal wick；

6）Type: Isotropic wick, gradient wick, double aperture wick.

The spectrum specifications of loop heat pipes

Type	Evaporator Specifications	Code	Heat Transfer Capability	Typical Technical Parameters	Schematic Diagram
Normal Temperature Loop Heat Pipes	Φ15	EX-LHP-φ15	≥350W	Working Fluid: Ammonia（purity 7.0N）
				Working Temperature：-60℃~+80℃
				Minimum Starting Power：≤3W
				Maximum Heat Transfer Capability：100~1000W
	Φ25	EX-LHP-φ25	≥1000W	Maximum Heat Transfer Distance：≥10m
				Thermal Resistance：≤0.01℃/W
				Temperature Accuracy: better than±0.5℃
				Antigravity Capability：≥2m
	Φ30	EX-LHP-φ30	≥2000W	Service Life：≥15years
				Thermal Property：-70~+120℃storage
				Mechanical Property: launching environment
				Reliability in Microgravity Environment: 100%
Low Temperature Loop Heat	Φ15/Φ25	EX-CLHP-φ15/EX-CLHP-φ25	100~300W	Working Temperature：60K~250K
				Minimum Starting Power：≤1W
				Maximum Heat Transfer Capability：100~300W
				Maximum Heat Transfer Distance：≥5m
				Thermal Resistance：≤0.02℃/W
				Antigravity Capability：≥2m
				Service Life：≥15years
				Reliability in Microgravity Environment: 100%

Advantages of EntropyX in producing loop heat pipes

Application Cases

Deployable Radiator based on Loop Heat Pipe

High-Power Loop Heat Pipes for Space Stations

Long Distance Loop Heat Pipe

North-South Plate Thermal Coupling Loop Heat Pipe

Low Temperature Loop Heat Pipe

Loop Heat Pipe with Dual Reservoirs

Evaporators for Loop Heat Pipes