How Evaporative Spray Cooling Systems Workrinitech.com/wp-content/uploads/2016/01/EvapSprayCo… ·...
2
Evaporative Spray Cooling of High Power Electronics (HPE) The military, automotive and industrial market demand has grown for high-power electronics applications such as hybrid & electric vehicles, high power military applications, motor controls, buss converters and other devices. High-power electronics are challenge by high heat flux and the need to reject large amounts of heat in high temperature ambient conditions in order to maintain device temperatures. This in turn has driven up coolant flow rates, power consumption and heat exchanger size. RINI has developed evaporative spray cooling technology to meet this challenge head-on, providing thermal management far superior to the standard single-phase cooling techniques used today. Using a two-phase cooling approach increases cooling efficiency allowing for high power density along with high coolant temperatures (100°C). Because of this, the cooling loop can be integrated with the vehicle cooling systems, improving the Size Weight and Power (SWaP) performance. How Evaporative Spray Cooling Systems Work: Evaporative Spray Cooling (ESC) technology harnesses the ability of liquids to absorb large amounts of energy during phase-change. Nozzles are used to distribute liquid droplets onto heated surfaces such as inverter module components. This approach reduces the overall thermal resistance of the electrical package, enabling high ambient temperature operation and more than 3 times higher power density. RINI’s ESC method is easily adapted to power inverter packaging, requiring no modifications to the electrical architecture and no direct wetting of the power electronics. This seamless integration method uses water-glycol or water-alcohol with existing cooling loops. HIGH POWER ELECTRONICS COOLING SOLUTIONS 407/359.7138 • www.rinitech.com BENEFITS: 3 to 5X increased inverter power density and specific power Enables full power module operation with 100°C coolant Easily integrated into power inverter packaging and existing cooling loops Low coolant flow rates APPLICATIONS: Hybrid & Fuel Cell Electric Vehicles High Power Military Applications DC to DC Converters DC to AC Inverters High Frequency Switching SPECIFICATIONS: 250kW inverter 100°C water/glycol IGBT temperature of 125°C Coolant flow rate 2.7GPM ®2007 RINI Technologies. All rights reserved. Specifications are subject to change without notice. DCN #HPE001 Bottom View Top View 100 90 80 70 60 50 40 30 20 10 0 110 115 120 125 130 % Inverter Full Power Load IGBT Junction Temp. (°C) RINI: 2.7GPM, 100°C coolant COTS: 5.3GPM, 100°C coolant Data based on 100°C coolant
Transcript of How Evaporative Spray Cooling Systems Workrinitech.com/wp-content/uploads/2016/01/EvapSprayCo… ·...
Evaporative Spray Cooling of High Power Electronics (HPE)
The military, automotive and industrial market demand has grown for high-power electronics applications such as hybrid & electric vehicles, high power military applications, motor controls, buss converters and other devices. High-power electronics are challenge by high heat flux and the need to reject large amounts of heat in high temperature ambient conditions in order to maintain device temperatures. This in turn has driven up coolant flow rates, power consumption and heat exchanger size.
RINI has developed evaporative spray cooling technology to meet this challenge head-on, providing thermal management far superior to the standard single-phase cooling techniques used today. Using a two-phase cooling approach increases cooling efficiency allowing for high power density
along with high coolant temperatures (100°C). Because of this, the cooling loop can be integrated with the vehicle cooling systems, improving the Size Weight and Power (SWaP) performance.
How Evaporative Spray Cooling Systems Work:
Evaporative Spray Cooling (ESC) technology harnesses the ability of liquids to absorb large amounts of energy during phase-change. Nozzles are used to distribute liquid droplets onto heated surfaces such as inverter module components. This approach reduces the overall thermal resistance of the electrical package, enabling high ambient temperature operation and more than 3 times higher power density. RINI’s ESC method is easily adapted to power inverter packaging, requiring no modifications to the electrical architecture and no direct wetting of the power electronics. This seamless integration method uses water-glycol or water-alcohol with existing cooling loops.
HIGH POWER ELECTRONICS COOLING SOLUTIONS
407/359.7138 • www.rinitech.com
BENEFITS:
3 to 5X increased inverter power
density and specific power
Enables full power module
operation with 100°C coolant
Easily integrated into power
inverter packaging and existing
cooling loops
Low coolant flow rates
APPLICATIONS:
Hybrid & Fuel Cell Electric Vehicles
High Power Military Applications
DC to DC Converters
DC to AC Inverters
High Frequency Switching
SPECIFICATIONS:
250kW inverter
100°C water/glycol
IGBT temperature of 125°C
Coolant flow rate 2.7GPM
®2007 RINI Technologies. All rights reserved. Specifications are subject to change without notice. DCN #HPE001
Bottom View
Top View
100
90
80
70
60
50
40
30
20
10
0110 115 120 125 130
% In
vert
er F
ull
Po
wer
Lo
ad
IGBT Junction Temp. (°C)
RINI: 2.7GPM, 100°C coolant
COTS: 5.3GPM,100°C coolant
Data based on 100°C coolant
About RINI Technologies:
RINI Technologies provides innovative solutions to the toughest thermal-management challenges. The company specializes in advanced Evaporative Spray Cooling (ESC), Thermal Energy Storage (TES) solutions and miniature refrigeration systems. Applications include high-power lasers, power electronics, and personal cooling. Contact RINI Technologies today to discuss how its engineers can address your cooling concerns with a complete system solution.
HIGH POWER ELECTRONICS COOLING SOLUTIONS
407/359.7138 • www.rinitech.com
®2007 RINI Technologies. All rights reserved. Specifications are subject to change without notice. DCN #HPE001
Hybrid Vehicles
High Power Military Applications
DC to DC Converters
![PASSIVE DOWNDRAUGHT EVAPORATIVE COOLING: The … · can be used to achieve thermal comfort. [1] Passive Downdraught Evaporative cooling (PDEC) Origin: Evaporative cooling has been](https://static.fdocuments.us/doc/165x107/5f835db0418ed251ad1ae1c3/passive-downdraught-evaporative-cooling-the-can-be-used-to-achieve-thermal-comfort.jpg)
